29 files changed, 1167 insertions, 1167 deletions

diff --git a/src/map/atcommand.cpp b/src/map/atcommand.cpp
index f405f14..1b857f4 100644
--- a/src/map/atcommand.cpp
+++ b/src/map/atcommand.cpp
@@ -214,7 +214,7 @@ AString gm_log;
 io::AppendFile *get_gm_log()
 {
     if (!gm_log)
-        return NULL;
+        return nullptr;
 
     struct tm ctime = TimeT::now();
 
@@ -334,7 +334,7 @@ void atkillmonster_sub(dumb_ptr<block_list> bl, int flag)
 
     dumb_ptr<mob_data> md = bl->is_mob();
     if (flag)
-        mob_damage(NULL, md, md->hp, 2);
+        mob_damage(nullptr, md, md->hp, 2);
     else
         mob_delete(md);
 }
@@ -369,7 +369,7 @@ bool atcommand_config_read(ZString cfgName)
             continue;
         }
         AtCommandInfo *p = get_atcommandinfo_byname(w1);
-        if (p != NULL)
+        if (p != nullptr)
         {
             p->level = GmLevel::from(static_cast<uint32_t>(atoi(w2.c_str())));
         }
@@ -639,7 +639,7 @@ ATCE atcommand_where(Session *s, dumb_ptr<map_session_data> sd,
     extract(message, &character);
 
     dumb_ptr<map_session_data> pl_sd = character.to__actual() ? map_nick2sd(character) : sd;
-    if (pl_sd != NULL &&
+    if (pl_sd != nullptr &&
         !((battle_config.hide_GM_session
            || bool(pl_sd->status.option & Option::HIDE))
           && !(pc_isGM(sd).detects(pc_isGM(pl_sd)))))
@@ -673,7 +673,7 @@ ATCE atcommand_goto(Session *s, dumb_ptr<map_session_data> sd,
     }
 
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-    if (pl_sd != NULL)
+    if (pl_sd != nullptr)
     {
         if (pl_sd->bl_m && pl_sd->bl_m->flag.get(MapFlag::NOWARPTO)
             && !(pc_isGM(sd).satisfies(GmLevel::from(static_cast<uint32_t>(battle_config.any_warp_GM_min_level)))))
@@ -1152,7 +1152,7 @@ ATCE atcommand_storage(Session *s, dumb_ptr<map_session_data> sd,
         return ATCE::EXIST;
     }
 
-    if ((stor = account2storage2(sd->status_key.account_id)) != NULL
+    if ((stor = account2storage2(sd->status_key.account_id)) != nullptr
         && stor->storage_status == 1)
     {
         clif_displaymessage(s, "msg_table[250]"_s);
@@ -1209,7 +1209,7 @@ static
 ATCE atcommand_die(Session *s, dumb_ptr<map_session_data> sd,
         ZString)
 {
-    pc_damage(NULL, sd, sd->status.hp + 1);
+    pc_damage(nullptr, sd, sd->status.hp + 1);
     clif_displaymessage(s, "A pity! You've died."_s);
 
     return ATCE::OKAY;
@@ -1225,12 +1225,12 @@ ATCE atcommand_kill(Session *s, dumb_ptr<map_session_data> sd,
         return ATCE::USAGE;
 
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-    if (pl_sd != NULL)
+    if (pl_sd != nullptr)
     {
         if (pc_isGM(sd).overwhelms(pc_isGM(pl_sd)))
         {
             // you can kill only lower or same level
-            pc_damage(NULL, pl_sd, pl_sd->status.hp + 1);
+            pc_damage(nullptr, pl_sd, pl_sd->status.hp + 1);
             clif_displaymessage(s, "Character killed."_s);
         }
         else
@@ -1334,7 +1334,7 @@ ATCE atcommand_item(Session *s, dumb_ptr<map_session_data> sd,
     XString item_name;
     int number = 0;
     ItemNameId item_id;
-    struct item_data *item_data = NULL;
+    struct item_data *item_data = nullptr;
     int get_count, i;
 
     if (!extract(message, record<' ', 1>(&item_name, &number)))
@@ -1347,9 +1347,9 @@ ATCE atcommand_item(Session *s, dumb_ptr<map_session_data> sd,
     if (number <= 0)
         number = 1;
 
-    if ((item_data = itemdb_searchname(item_name)) != NULL)
+    if ((item_data = itemdb_searchname(item_name)) != nullptr)
         item_id = item_data->nameid;
-    else if (extract(item_name, &item_id) && (item_data = itemdb_exists(item_id)) != NULL)
+    else if (extract(item_name, &item_id) && (item_data = itemdb_exists(item_id)) != nullptr)
         item_id = item_data->nameid;
     else
         return ATCE::EXIST;
@@ -2068,7 +2068,7 @@ ATCE atcommand_recall(Session *s, dumb_ptr<map_session_data> sd,
         return ATCE::USAGE;
 
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-    if (pl_sd != NULL)
+    if (pl_sd != nullptr)
     {
         if (pc_isGM(sd).overwhelms(pc_isGM(pl_sd)))
         {
@@ -2116,7 +2116,7 @@ ATCE atcommand_revive(Session *s, dumb_ptr<map_session_data> sd,
         return ATCE::USAGE;
 
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-    if (pl_sd != NULL)
+    if (pl_sd != nullptr)
     {
         pl_sd->status.hp = pl_sd->status.max_hp;
         pc_setstand(pl_sd);
@@ -2146,7 +2146,7 @@ ATCE atcommand_character_stats(Session *s, dumb_ptr<map_session_data>,
         return ATCE::USAGE;
 
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-    if (pl_sd != NULL)
+    if (pl_sd != nullptr)
     {
         AString output;
         output = STRPRINTF("'%s' stats:"_fmt, pl_sd->status_key.name);
@@ -2256,7 +2256,7 @@ ATCE atcommand_character_option(Session *s, dumb_ptr<map_session_data> sd,
         return ATCE::USAGE;
 
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-    if (pl_sd != NULL)
+    if (pl_sd != nullptr)
     {
         if (pc_isGM(sd).overwhelms(pc_isGM(pl_sd)))
         {
@@ -2391,7 +2391,7 @@ ATCE atcommand_character_save(Session *s, dumb_ptr<map_session_data> sd,
         return ATCE::USAGE;
 
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-    if (pl_sd != NULL)
+    if (pl_sd != nullptr)
     {
         if (pc_isGM(sd).overwhelms(pc_isGM(pl_sd)))
         {
@@ -2445,7 +2445,7 @@ ATCE atcommand_doom(Session *s, dumb_ptr<map_session_data> sd,
             && pc_isGM(sd).overwhelms(pc_isGM(pl_sd)))
         {
             // you can doom only lower or same gm level
-            pc_damage(NULL, pl_sd, pl_sd->status.hp + 1);
+            pc_damage(nullptr, pl_sd, pl_sd->status.hp + 1);
             clif_displaymessage(pl_sd->sess, "The holy messenger has given judgement."_s);
         }
     }
@@ -2469,7 +2469,7 @@ ATCE atcommand_doommap(Session *s, dumb_ptr<map_session_data> sd,
             && pc_isGM(sd).overwhelms(pc_isGM(pl_sd)))
         {
             // you can doom only lower or same gm level
-            pc_damage(NULL, pl_sd, pl_sd->status.hp + 1);
+            pc_damage(nullptr, pl_sd, pl_sd->status.hp + 1);
             clif_displaymessage(pl_sd->sess, "The holy messenger has given judgement."_s);
         }
     }
@@ -2541,7 +2541,7 @@ ATCE atcommand_character_baselevel(Session *s, dumb_ptr<map_session_data> sd,
         return ATCE::USAGE;
 
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-    if (pl_sd != NULL)
+    if (pl_sd != nullptr)
     {
         if (pc_isGM(sd).overwhelms(pc_isGM(pl_sd)))
         {
@@ -2627,7 +2627,7 @@ ATCE atcommand_character_joblevel(Session *s, dumb_ptr<map_session_data> sd,
         return ATCE::USAGE;
 
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-    if (pl_sd != NULL)
+    if (pl_sd != nullptr)
     {
         if (pc_isGM(sd).overwhelms(pc_isGM(pl_sd)))
         {
@@ -2699,7 +2699,7 @@ ATCE atcommand_kick(Session *s, dumb_ptr<map_session_data> sd,
         return ATCE::USAGE;
 
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-    if (pl_sd != NULL)
+    if (pl_sd != nullptr)
     {
         if (pc_isGM(sd).overwhelms(pc_isGM(pl_sd)))
             // you can kick only lower or same gm level
@@ -2797,7 +2797,7 @@ ATCE atcommand_charquestskill(Session *s, dumb_ptr<map_session_data>,
         if (skill_get_inf2(skill_id) & 0x01)
         {
             dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-            if (pl_sd != NULL)
+            if (pl_sd != nullptr)
             {
                 if (pc_checkskill(pl_sd, skill_id) == 0)
                 {
@@ -2887,7 +2887,7 @@ ATCE atcommand_charlostskill(Session *s, dumb_ptr<map_session_data>,
         if (skill_get_inf2(skill_id) & 0x01)
         {
             dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-            if (pl_sd != NULL)
+            if (pl_sd != nullptr)
             {
                 if (pc_checkskill(pl_sd, skill_id) > 0)
                 {
@@ -2976,7 +2976,7 @@ ATCE atcommand_idsearch(Session *s, dumb_ptr<map_session_data>,
     match = 0;
     for (ItemNameId i = wrap<ItemNameId>(0); i < wrap<ItemNameId>(-1); i = next(i))
     {
-        if ((item = itemdb_exists(i)) != NULL
+        if ((item = itemdb_exists(i)) != nullptr
             && item->jname.contains_seq(item_name))
         {
             match++;
@@ -3000,7 +3000,7 @@ ATCE atcommand_charskreset(Session *s, dumb_ptr<map_session_data> sd,
         return ATCE::USAGE;
 
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-    if (pl_sd != NULL)
+    if (pl_sd != nullptr)
     {
         if (pc_isGM(sd).overwhelms(pc_isGM(pl_sd)))
         {
@@ -3035,7 +3035,7 @@ ATCE atcommand_charstreset(Session *s, dumb_ptr<map_session_data> sd,
         return ATCE::USAGE;
 
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-    if (pl_sd != NULL)
+    if (pl_sd != nullptr)
     {
         if (pc_isGM(sd).overwhelms(pc_isGM(pl_sd)))
         {
@@ -3071,7 +3071,7 @@ ATCE atcommand_charreset(Session *s, dumb_ptr<map_session_data> sd,
         return ATCE::USAGE;
 
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-    if (pl_sd != NULL)
+    if (pl_sd != nullptr)
     {
         if (pc_isGM(sd).overwhelms(pc_isGM(pl_sd)))
         {
@@ -3111,7 +3111,7 @@ ATCE atcommand_char_wipe(Session *s, dumb_ptr<map_session_data> sd,
         return ATCE::USAGE;
 
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-    if (pl_sd != NULL)
+    if (pl_sd != nullptr)
     {
         if (pc_isGM(sd).overwhelms(pc_isGM(pl_sd)))
         {
@@ -3191,7 +3191,7 @@ ATCE atcommand_charmodel(Session *s, dumb_ptr<map_session_data>,
         return ATCE::USAGE;
 
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-    if (pl_sd != NULL)
+    if (pl_sd != nullptr)
     {
         if (hair_style >= MIN_HAIR_STYLE && hair_style <= MAX_HAIR_STYLE &&
             hair_color >= MIN_HAIR_COLOR && hair_color <= MAX_HAIR_COLOR &&
@@ -3229,7 +3229,7 @@ ATCE atcommand_charskpoint(Session *s, dumb_ptr<map_session_data>,
         return ATCE::USAGE;
 
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-    if (pl_sd != NULL)
+    if (pl_sd != nullptr)
     {
         new_skill_point = pl_sd->status.skill_point + point;
         if (point > 0 && (point > 0x7FFF || new_skill_point > 0x7FFF))
@@ -3269,7 +3269,7 @@ ATCE atcommand_charstpoint(Session *s, dumb_ptr<map_session_data>,
         return ATCE::USAGE;
 
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-    if (pl_sd != NULL)
+    if (pl_sd != nullptr)
     {
         new_status_point = pl_sd->status.status_point + point;
         if (point > 0 && (point > 0x7FFF || new_status_point > 0x7FFF))
@@ -3307,7 +3307,7 @@ ATCE atcommand_charzeny(Session *s, dumb_ptr<map_session_data>,
         return ATCE::USAGE;
 
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-    if (pl_sd != NULL)
+    if (pl_sd != nullptr)
     {
         new_zeny = pl_sd->status.zeny + zeny;
         if (zeny > 0 && (zeny > MAX_ZENY || new_zeny > MAX_ZENY))
@@ -3445,7 +3445,7 @@ static
 ATCE atcommand_mapinfo(Session *s, dumb_ptr<map_session_data> sd,
         ZString message)
 {
-    dumb_ptr<npc_data> nd = NULL;
+    dumb_ptr<npc_data> nd = nullptr;
     MapName map_name;
     LString direction = ""_s;
     int list = 0;
@@ -3618,7 +3618,7 @@ ATCE atcommand_enablenpc(Session *s, dumb_ptr<map_session_data>,
     if (!extract(message, &NPCname) || !NPCname)
         return ATCE::USAGE;
 
-    if (npc_name2id(NPCname) != NULL)
+    if (npc_name2id(NPCname) != nullptr)
     {
         npc_enable(NPCname, 1);
         clif_displaymessage(s, "Npc Enabled."_s);
@@ -3641,7 +3641,7 @@ ATCE atcommand_disablenpc(Session *s, dumb_ptr<map_session_data>,
     if (!extract(message, &NPCname) || !NPCname)
         return ATCE::USAGE;
 
-    if (npc_name2id(NPCname) != NULL)
+    if (npc_name2id(NPCname) != nullptr)
     {
         npc_enable(NPCname, 0);
         clif_displaymessage(s, "Npc Disabled."_s);
@@ -3681,15 +3681,15 @@ ATCE atcommand_chardelitem(Session *s, dumb_ptr<map_session_data> sd,
     if (!asplit(message, &item_name, &number, &character) || number < 1)
         return ATCE::USAGE;
 
-    if ((item_data = itemdb_searchname(item_name)) != NULL)
+    if ((item_data = itemdb_searchname(item_name)) != nullptr)
         item_id = item_data->nameid;
-    else if (extract(item_name, &item_id) && (item_data = itemdb_exists(item_id)) != NULL)
+    else if (extract(item_name, &item_id) && (item_data = itemdb_exists(item_id)) != nullptr)
         item_id = item_data->nameid;
 
     if (item_id)
     {
         dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-        if (pl_sd != NULL)
+        if (pl_sd != nullptr)
         {
             if (pc_isGM(sd).overwhelms(pc_isGM(pl_sd)))
             {
@@ -3845,7 +3845,7 @@ static
 ATCE atcommand_character_item_list(Session *s, dumb_ptr<map_session_data> sd,
         ZString message)
 {
-    struct item_data *item_data = NULL;
+    struct item_data *item_data = nullptr;
     int count, counter;
     CharName character;
 
@@ -3853,7 +3853,7 @@ ATCE atcommand_character_item_list(Session *s, dumb_ptr<map_session_data> sd,
         return ATCE::USAGE;
 
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-    if (pl_sd != NULL)
+    if (pl_sd != nullptr)
     {
         if (pc_isGM(sd).overwhelms(pc_isGM(pl_sd)))
         {
@@ -3865,7 +3865,7 @@ ATCE atcommand_character_item_list(Session *s, dumb_ptr<map_session_data> sd,
                 if (pl_sd->status.inventory[i].nameid
                     && (item_data =
                         itemdb_search(pl_sd->status.inventory[i].nameid)) !=
-                    NULL)
+                    nullptr)
                 {
                     counter = counter + pl_sd->status.inventory[i].amount;
                     count++;
@@ -3957,7 +3957,7 @@ ATCE atcommand_character_storage_list(Session *s, dumb_ptr<map_session_data> sd,
         ZString message)
 {
     Storage *stor;
-    struct item_data *item_data = NULL;
+    struct item_data *item_data = nullptr;
     int count, counter;
     CharName character;
 
@@ -3965,12 +3965,12 @@ ATCE atcommand_character_storage_list(Session *s, dumb_ptr<map_session_data> sd,
         return ATCE::USAGE;
 
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-    if (pl_sd != NULL)
+    if (pl_sd != nullptr)
     {
         if (pc_isGM(sd).overwhelms(pc_isGM(pl_sd)))
         {
             // you can look items only lower or same level
-            if ((stor = account2storage2(pl_sd->status_key.account_id)) != NULL)
+            if ((stor = account2storage2(pl_sd->status_key.account_id)) != nullptr)
             {
                 counter = 0;
                 count = 0;
@@ -3978,7 +3978,7 @@ ATCE atcommand_character_storage_list(Session *s, dumb_ptr<map_session_data> sd,
                 {
                     if (stor->storage_[i].nameid
                         && (item_data =
-                            itemdb_search(stor->storage_[i].nameid)) != NULL)
+                            itemdb_search(stor->storage_[i].nameid)) != nullptr)
                     {
                         counter = counter + stor->storage_[i].amount;
                         count++;
@@ -4054,7 +4054,7 @@ ATCE atcommand_charkiller(Session *s, dumb_ptr<map_session_data>,
         return ATCE::USAGE;
 
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-    if (pl_sd == NULL)
+    if (pl_sd == nullptr)
         return ATCE::EXIST;
 
     pl_sd->special_state.killer = !pl_sd->special_state.killer;
@@ -4097,7 +4097,7 @@ ATCE atcommand_charkillable(Session *s, dumb_ptr<map_session_data>,
         return ATCE::USAGE;
 
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-    if (pl_sd == NULL)
+    if (pl_sd == nullptr)
         return ATCE::EXIST;
 
     pl_sd->special_state.killable = !pl_sd->special_state.killable;
@@ -4116,13 +4116,13 @@ ATCE atcommand_npcmove(Session *, dumb_ptr<map_session_data>,
 {
     NpcName character;
     int x = 0, y = 0;
-    dumb_ptr<npc_data> nd = 0;
+    dumb_ptr<npc_data> nd = nullptr;
 
     if (!asplit(message, &x, &y, &character))
         return ATCE::USAGE;
 
     nd = npc_name2id(character);
-    if (nd == NULL)
+    if (nd == nullptr)
         return ATCE::EXIST;
 
     npc_enable(character, 0);
@@ -4172,7 +4172,7 @@ ATCE atcommand_chareffect(Session *s, dumb_ptr<map_session_data>,
         return ATCE::USAGE;
 
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(target);
-    if (pl_sd == NULL)
+    if (pl_sd == nullptr)
         return ATCE::EXIST;
 
     clif_specialeffect(pl_sd, type, 0);
@@ -4206,7 +4206,7 @@ ATCE atcommand_chardropall(Session *s, dumb_ptr<map_session_data>,
     if (!asplit(message, &character))
         return ATCE::USAGE;
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-    if (pl_sd == NULL)
+    if (pl_sd == nullptr)
         return ATCE::EXIST;
     for (IOff0 i : IOff0::iter())
     {
@@ -4268,7 +4268,7 @@ ATCE atcommand_charstoreall(Session *s, dumb_ptr<map_session_data> sd,
     if (!asplit(message, &character))
         return ATCE::USAGE;
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-    if (pl_sd == NULL)
+    if (pl_sd == nullptr)
         return ATCE::EXIST;
 
     if (storage_storageopen(pl_sd) == 1)
@@ -4451,7 +4451,7 @@ ATCE atcommand_adjgmlvl(Session *s, dumb_ptr<map_session_data>,
     }
 
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(user);
-    if (pl_sd == NULL)
+    if (pl_sd == nullptr)
         return ATCE::EXIST;
 
     pc_set_gm_level(pl_sd->status_key.account_id, newlev);
@@ -4583,7 +4583,7 @@ ATCE atcommand_set_magic(Session *s, dumb_ptr<map_session_data>,
     }
 
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-    if (pl_sd != NULL)
+    if (pl_sd != nullptr)
     {
         if (skill_index == SkillID::ZERO)
             for (SkillID sk : magic_skills)
@@ -4713,7 +4713,7 @@ ATCE atcommand_skillpool_info(Session *s, dumb_ptr<map_session_data>,
         return ATCE::USAGE;
 
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-    if (pl_sd != NULL)
+    if (pl_sd != nullptr)
     {
         SkillID pool_skills[MAX_SKILL_POOL];
         int pool_skills_nr = skill_pool(pl_sd, pool_skills);
@@ -4773,7 +4773,7 @@ ATCE atcommand_skillpool_focus(Session *s, dumb_ptr<map_session_data>,
     }
 
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-    if (pl_sd != NULL)
+    if (pl_sd != nullptr)
     {
         if (skill_pool_activate(pl_sd, skill))
             clif_displaymessage(s, "Activation failed."_s);
@@ -4797,7 +4797,7 @@ ATCE atcommand_skillpool_unfocus(Session *s, dumb_ptr<map_session_data>,
         return ATCE::USAGE;
 
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-    if (pl_sd != NULL)
+    if (pl_sd != nullptr)
     {
         if (skill_pool_deactivate(pl_sd, skill))
             clif_displaymessage(s, "Deactivation failed."_s);
@@ -4822,7 +4822,7 @@ ATCE atcommand_skill_learn(Session *s, dumb_ptr<map_session_data>,
         return ATCE::USAGE;
 
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-    if (pl_sd != NULL)
+    if (pl_sd != nullptr)
     {
         set_skill(pl_sd, skill, level);
         clif_skillinfoblock(pl_sd);
@@ -4843,7 +4843,7 @@ ATCE atcommand_ipcheck(Session *s, dumb_ptr<map_session_data>,
         return ATCE::USAGE;
 
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(character);
-    if (pl_sd == NULL)
+    if (pl_sd == nullptr)
     {
         clif_displaymessage(s, "Character not found."_s);
         return ATCE::EXIST;
@@ -4894,7 +4894,7 @@ ATCE atcommand_doomspot(Session *s, dumb_ptr<map_session_data> sd,
             && pc_isGM(sd).overwhelms(pc_isGM(pl_sd)))
         {
             // you can doom only lower or same gm level
-            pc_damage(NULL, pl_sd, pl_sd->status.hp + 1);
+            pc_damage(nullptr, pl_sd, pl_sd->status.hp + 1);
             clif_displaymessage(pl_sd->sess, "The holy messenger has given judgement."_s);
         }
     }
diff --git a/src/map/battle.cpp b/src/map/battle.cpp
index a653cac..95826bb 100644
--- a/src/map/battle.cpp
+++ b/src/map/battle.cpp
@@ -63,7 +63,7 @@ static
 int battle_counttargeted(dumb_ptr<block_list> bl, dumb_ptr<block_list> src,
         ATK target_lv)
 {
-    nullpo_ret(bl);
+    nullpo_retz(bl);
     if (bl->bl_type == BL::PC)
         return pc_counttargeted(bl->is_player(), src,
                                  target_lv);
@@ -111,7 +111,7 @@ DIR battle_get_dir(dumb_ptr<block_list> bl)
  */
 int battle_get_lv(dumb_ptr<block_list> bl)
 {
-    nullpo_ret(bl);
+    nullpo_retz(bl);
     if (bl->bl_type == BL::MOB)
         return bl->is_mob()->stats[mob_stat::LV];
     else if (bl->bl_type == BL::PC)
@@ -127,7 +127,7 @@ int battle_get_lv(dumb_ptr<block_list> bl)
  */
 int battle_get_range(dumb_ptr<block_list> bl)
 {
-    nullpo_ret(bl);
+    nullpo_retz(bl);
     if (bl->bl_type == BL::MOB)
         return get_mob_db(bl->is_mob()->mob_class).range;
     else if (bl->bl_type == BL::PC)
@@ -189,7 +189,7 @@ int battle_get_str(dumb_ptr<block_list> bl)
     int str = 0;
     eptr<struct status_change, StatusChange, StatusChange::MAX_STATUSCHANGE> sc_data;
 
-    nullpo_ret(bl);
+    nullpo_retz(bl);
     sc_data = battle_get_sc_data(bl);
     if (bl->bl_type == BL::MOB)
         str = bl->is_mob()->stats[mob_stat::STR];
@@ -212,7 +212,7 @@ int battle_get_agi(dumb_ptr<block_list> bl)
     int agi = 0;
     eptr<struct status_change, StatusChange, StatusChange::MAX_STATUSCHANGE> sc_data;
 
-    nullpo_ret(bl);
+    nullpo_retz(bl);
     sc_data = battle_get_sc_data(bl);
     if (bl->bl_type == BL::MOB)
         agi = bl->is_mob()->stats[mob_stat::AGI];
@@ -234,7 +234,7 @@ int battle_get_vit(dumb_ptr<block_list> bl)
     int vit = 0;
     eptr<struct status_change, StatusChange, StatusChange::MAX_STATUSCHANGE> sc_data;
 
-    nullpo_ret(bl);
+    nullpo_retz(bl);
     sc_data = battle_get_sc_data(bl);
     if (bl->bl_type == BL::MOB)
         vit = bl->is_mob()->stats[mob_stat::VIT];
@@ -256,7 +256,7 @@ int battle_get_int(dumb_ptr<block_list> bl)
     int int_ = 0;
     eptr<struct status_change, StatusChange, StatusChange::MAX_STATUSCHANGE> sc_data;
 
-    nullpo_ret(bl);
+    nullpo_retz(bl);
     sc_data = battle_get_sc_data(bl);
     if (bl->bl_type == BL::MOB)
         int_ = bl->is_mob()->stats[mob_stat::INT];
@@ -278,7 +278,7 @@ int battle_get_dex(dumb_ptr<block_list> bl)
     int dex = 0;
     eptr<struct status_change, StatusChange, StatusChange::MAX_STATUSCHANGE> sc_data;
 
-    nullpo_ret(bl);
+    nullpo_retz(bl);
     sc_data = battle_get_sc_data(bl);
     if (bl->bl_type == BL::MOB)
         dex = bl->is_mob()->stats[mob_stat::DEX];
@@ -300,7 +300,7 @@ int battle_get_luk(dumb_ptr<block_list> bl)
     int luk = 0;
     eptr<struct status_change, StatusChange, StatusChange::MAX_STATUSCHANGE> sc_data;
 
-    nullpo_ret(bl);
+    nullpo_retz(bl);
     sc_data = battle_get_sc_data(bl);
     if (bl->bl_type == BL::MOB)
         luk = bl->is_mob()->stats[mob_stat::LUK];
@@ -466,7 +466,7 @@ int battle_get_atk(dumb_ptr<block_list> bl)
     eptr<struct status_change, StatusChange, StatusChange::MAX_STATUSCHANGE> sc_data;
     int atk = 0;
 
-    nullpo_ret(bl);
+    nullpo_retz(bl);
     sc_data = battle_get_sc_data(bl);
     if (bl->bl_type == BL::PC)
         atk = bl->is_player()->watk;
@@ -486,7 +486,7 @@ int battle_get_atk(dumb_ptr<block_list> bl)
 static
 int battle_get_atk_(dumb_ptr<block_list> bl)
 {
-    nullpo_ret(bl);
+    nullpo_retz(bl);
     if (bl->bl_type == BL::PC)
         return bl->is_player()->watk_;
     else
@@ -501,7 +501,7 @@ int battle_get_atk_(dumb_ptr<block_list> bl)
 static
 int battle_get_atk2(dumb_ptr<block_list> bl)
 {
-    nullpo_ret(bl);
+    nullpo_retz(bl);
     if (bl->bl_type == BL::PC)
         return bl->is_player()->watk2;
     else
@@ -524,7 +524,7 @@ int battle_get_atk2(dumb_ptr<block_list> bl)
 static
 int battle_get_atk_2(dumb_ptr<block_list> bl)
 {
-    nullpo_ret(bl);
+    nullpo_retz(bl);
     if (bl->bl_type == BL::PC)
         return bl->is_player()->watk_2;
     else
@@ -540,7 +540,7 @@ static
 int battle_get_matk1(dumb_ptr<block_list> bl)
 {
     eptr<struct status_change, StatusChange, StatusChange::MAX_STATUSCHANGE> sc_data;
-    nullpo_ret(bl);
+    nullpo_retz(bl);
     sc_data = battle_get_sc_data(bl);
     if (bl->bl_type == BL::MOB)
     {
@@ -563,7 +563,7 @@ int battle_get_matk1(dumb_ptr<block_list> bl)
 static
 int battle_get_matk2(dumb_ptr<block_list> bl)
 {
-    nullpo_ret(bl);
+    nullpo_retz(bl);
     if (bl->bl_type == BL::MOB)
     {
         int matk, int_ = battle_get_int(bl);
@@ -587,7 +587,7 @@ int battle_get_def(dumb_ptr<block_list> bl)
     eptr<struct status_change, StatusChange, StatusChange::MAX_STATUSCHANGE> sc_data;
     int def = 0;
 
-    nullpo_ret(bl);
+    nullpo_retz(bl);
     sc_data = battle_get_sc_data(bl);
     if (bl->bl_type == BL::PC)
     {
@@ -623,7 +623,7 @@ int battle_get_mdef(dumb_ptr<block_list> bl)
     eptr<struct status_change, StatusChange, StatusChange::MAX_STATUSCHANGE> sc_data;
     int mdef = 0;
 
-    nullpo_ret(bl);
+    nullpo_retz(bl);
     sc_data = battle_get_sc_data(bl);
     if (bl->bl_type == BL::PC)
         mdef = bl->is_player()->mdef;
@@ -685,7 +685,7 @@ int battle_get_mdef2(dumb_ptr<block_list> bl)
 {
     int mdef2 = 0;
 
-    nullpo_ret(bl);
+    nullpo_retz(bl);
     if (bl->bl_type == BL::MOB)
     {
         dumb_ptr<mob_data> md = bl->is_mob();
@@ -883,60 +883,60 @@ eptr<struct status_change, StatusChange, StatusChange::MAX_STATUSCHANGE> battle_
 
 short *battle_get_sc_count(dumb_ptr<block_list> bl)
 {
-    nullpo_retr(NULL, bl);
+    nullpo_retr(nullptr, bl);
     if (bl->bl_type == BL::MOB)
         return &bl->is_mob()->sc_count;
     else if (bl->bl_type == BL::PC)
         return &bl->is_player()->sc_count;
-    return NULL;
+    return nullptr;
 }
 
 Opt1 *battle_get_opt1(dumb_ptr<block_list> bl)
 {
-    nullpo_ret(bl);
+    nullpo_retn(bl);
     if (bl->bl_type == BL::MOB)
         return &bl->is_mob()->opt1;
     else if (bl->bl_type == BL::PC)
         return &bl->is_player()->opt1;
     else if (bl->bl_type == BL::NPC)
         return &bl->is_npc()->opt1;
-    return 0;
+    return nullptr;
 }
 
 Opt2 *battle_get_opt2(dumb_ptr<block_list> bl)
 {
-    nullpo_ret(bl);
+    nullpo_retn(bl);
     if (bl->bl_type == BL::MOB)
         return &bl->is_mob()->opt2;
     else if (bl->bl_type == BL::PC)
         return &bl->is_player()->opt2;
     else if (bl->bl_type == BL::NPC)
         return &bl->is_npc()->opt2;
-    return 0;
+    return nullptr;
 }
 
 Opt3 *battle_get_opt3(dumb_ptr<block_list> bl)
 {
-    nullpo_ret(bl);
+    nullpo_retn(bl);
     if (bl->bl_type == BL::MOB)
         return &bl->is_mob()->opt3;
     else if (bl->bl_type == BL::PC)
         return &bl->is_player()->opt3;
     else if (bl->bl_type == BL::NPC)
         return &bl->is_npc()->opt3;
-    return 0;
+    return nullptr;
 }
 
 Option *battle_get_option(dumb_ptr<block_list> bl)
 {
-    nullpo_ret(bl);
+    nullpo_retn(bl);
     if (bl->bl_type == BL::MOB)
         return &bl->is_mob()->option;
     else if (bl->bl_type == BL::PC)
         return &bl->is_player()->status.option;
     else if (bl->bl_type == BL::NPC)
         return &bl->is_npc()->option;
-    return 0;
+    return nullptr;
 }
 
 //-------------------------------------------------------------------
@@ -953,17 +953,17 @@ struct battle_delay_damage_
 int battle_damage(dumb_ptr<block_list> bl, dumb_ptr<block_list> target,
                    int damage, int flag)
 {
-    nullpo_ret(target);    //blはNULLで呼ばれることがあるので他でチェック
+    nullpo_retz(target);    //blはNULLで呼ばれることがあるので他でチェック
 
     if (damage == 0)
         return 0;
 
-    if (target->bl_prev == NULL)
+    if (target->bl_prev == nullptr)
         return 0;
 
     if (bl)
     {
-        if (bl->bl_prev == NULL)
+        if (bl->bl_prev == nullptr)
             return 0;
     }
 
@@ -991,7 +991,7 @@ int battle_damage(dumb_ptr<block_list> bl, dumb_ptr<block_list> target,
 int battle_heal(dumb_ptr<block_list> bl, dumb_ptr<block_list> target, int hp,
                  int sp, int flag)
 {
-    nullpo_ret(target);    //blはNULLで呼ばれることがあるので他でチェック
+    nullpo_retz(target);    //blはNULLで呼ばれることがあるので他でチェック
 
     if (target->bl_type == BL::PC
         && pc_isdead(target->is_player()))
@@ -1012,7 +1012,7 @@ int battle_heal(dumb_ptr<block_list> bl, dumb_ptr<block_list> target, int hp,
 // 攻撃停止
 int battle_stopattack(dumb_ptr<block_list> bl)
 {
-    nullpo_ret(bl);
+    nullpo_retz(bl);
     if (bl->bl_type == BL::MOB)
         return mob_stopattack(bl->is_mob());
     else if (bl->bl_type == BL::PC)
@@ -1023,7 +1023,7 @@ int battle_stopattack(dumb_ptr<block_list> bl)
 // 移動停止
 int battle_stopwalking(dumb_ptr<block_list> bl, int type)
 {
-    nullpo_ret(bl);
+    nullpo_retz(bl);
     if (bl->bl_type == BL::MOB)
         return mob_stop_walking(bl->is_mob(), type);
     else if (bl->bl_type == BL::PC)
@@ -1040,9 +1040,9 @@ int battle_calc_damage(dumb_ptr<block_list>, dumb_ptr<block_list> bl,
                         int damage, int div_,
                         SkillID, int, BF flag)
 {
-    dumb_ptr<mob_data> md = NULL;
+    dumb_ptr<mob_data> md = nullptr;
 
-    nullpo_ret(bl);
+    nullpo_retz(bl);
 
     if (bl->bl_type == BL::MOB)
         md = bl->is_mob();
@@ -1059,7 +1059,7 @@ int battle_calc_damage(dumb_ptr<block_list>, dumb_ptr<block_list> bl,
             damage = 3;
     }
 
-    if (md != NULL && md->hp > 0 && damage > 0) // 反撃などのMOBスキル判定
+    if (md != nullptr && md->hp > 0 && damage > 0) // 反撃などのMOBスキル判定
         mobskill_event(md, flag);
 
     return damage;
@@ -1071,8 +1071,8 @@ struct Damage battle_calc_mob_weapon_attack(dumb_ptr<block_list> src,
                                                     SkillID skill_num,
                                                     int skill_lv, int)
 {
-    dumb_ptr<map_session_data> tsd = NULL;
-    dumb_ptr<mob_data> md = src->is_mob(), tmd = NULL;
+    dumb_ptr<map_session_data> tsd = nullptr;
+    dumb_ptr<mob_data> md = src->is_mob(), tmd = nullptr;
     int hitrate, flee, cri = 0, atkmin, atkmax;
     int target_count = 1;
     int def1 = battle_get_def(target);
@@ -1282,7 +1282,7 @@ struct Damage battle_calc_mob_weapon_attack(dumb_ptr<block_list> src,
         damage = 0;
 
     // 完全回避の判定
-    if (skill_num == SkillID::ZERO && skill_lv >= 0 && tsd != NULL
+    if (skill_num == SkillID::ZERO && skill_lv >= 0 && tsd != nullptr
         && random_::chance({battle_get_flee2(target), 1000}))
     {
         damage = 0;
@@ -1292,7 +1292,7 @@ struct Damage battle_calc_mob_weapon_attack(dumb_ptr<block_list> src,
 
     if (battle_config.enemy_perfect_flee)
     {
-        if (skill_num == SkillID::ZERO && skill_lv >= 0 && tmd != NULL
+        if (skill_num == SkillID::ZERO && skill_lv >= 0 && tmd != nullptr
             && random_::chance({battle_get_flee2(target), 1000}))
         {
             damage = 0;
@@ -1346,8 +1346,8 @@ struct Damage battle_calc_pc_weapon_attack(dumb_ptr<block_list> src,
                                                    SkillID skill_num,
                                                    int skill_lv, int)
 {
-    dumb_ptr<map_session_data> sd = src->is_player(), tsd = NULL;
-    dumb_ptr<mob_data> tmd = NULL;
+    dumb_ptr<map_session_data> sd = src->is_player(), tsd = nullptr;
+    dumb_ptr<mob_data> tmd = nullptr;
     int hitrate, flee, cri = 0, atkmin, atkmax;
     int dex, target_count = 1;
     int def1 = battle_get_def(target);
@@ -1708,7 +1708,7 @@ struct Damage battle_calc_pc_weapon_attack(dumb_ptr<block_list> src,
     }
 
     // 完全回避の判定
-    if (skill_num == SkillID::ZERO && skill_lv >= 0 && tsd != NULL && div_ < 255
+    if (skill_num == SkillID::ZERO && skill_lv >= 0 && tsd != nullptr && div_ < 255
         && random_::chance({battle_get_flee2(target), 1000}))
     {
         damage = damage2 = 0;
@@ -1719,7 +1719,7 @@ struct Damage battle_calc_pc_weapon_attack(dumb_ptr<block_list> src,
     // 対象が完全回避をする設定がONなら
     if (battle_config.enemy_perfect_flee)
     {
-        if (skill_num == SkillID::ZERO && skill_lv >= 0 && tmd != NULL && div_ < 255
+        if (skill_num == SkillID::ZERO && skill_lv >= 0 && tmd != nullptr && div_ < 255
             && random_::chance({battle_get_flee2(target), 1000}))
         {
             damage = damage2 = 0;
@@ -1809,7 +1809,7 @@ struct Damage battle_calc_magic_attack(dumb_ptr<block_list> bl,
     int matk1, matk2, damage = 0, div_ = 1;
     struct Damage md {};
     int normalmagic_flag = 1;
-    dumb_ptr<map_session_data> sd = NULL;
+    dumb_ptr<map_session_data> sd = nullptr;
 
     nullpo_retr(md, bl);
     nullpo_retr(md, target);
@@ -1885,7 +1885,7 @@ struct Damage battle_calc_misc_attack(dumb_ptr<block_list> bl,
                                        dumb_ptr<block_list> target,
                                        SkillID skill_num, int skill_lv, int)
 {
-    dumb_ptr<map_session_data> sd = NULL;
+    dumb_ptr<map_session_data> sd = nullptr;
     int damage = 0, div_ = 1;
     struct Damage md {};
     int damagefix = 1;
@@ -1979,7 +1979,7 @@ struct Damage battle_calc_attack(BF attack_type,
 ATK battle_weapon_attack(dumb_ptr<block_list> src, dumb_ptr<block_list> target,
         tick_t tick)
 {
-    dumb_ptr<map_session_data> sd = NULL;
+    dumb_ptr<map_session_data> sd = nullptr;
     eptr<struct status_change, StatusChange, StatusChange::MAX_STATUSCHANGE> t_sc_data = battle_get_sc_data(target);
     struct Damage wd;
 
@@ -1989,7 +1989,7 @@ ATK battle_weapon_attack(dumb_ptr<block_list> src, dumb_ptr<block_list> target,
     if (src->bl_type == BL::PC)
         sd = src->is_player();
 
-    if (src->bl_prev == NULL || target->bl_prev == NULL)
+    if (src->bl_prev == nullptr || target->bl_prev == nullptr)
         return ATK::ZERO;
     if (src->bl_type == BL::PC && pc_isdead(sd))
         return ATK::ZERO;
@@ -1998,7 +1998,7 @@ ATK battle_weapon_attack(dumb_ptr<block_list> src, dumb_ptr<block_list> target,
         return ATK::ZERO;
 
     Opt1 *opt1 = battle_get_opt1(src);
-    if (opt1 != NULL && bool(*opt1))
+    if (opt1 != nullptr && bool(*opt1))
     {
         battle_stopattack(src);
         return ATK::ZERO;
@@ -2088,7 +2088,7 @@ ATK battle_weapon_attack(dumb_ptr<block_list> src, dumb_ptr<block_list> target,
         }
 
         battle_damage(src, target, (wd.damage + wd.damage2), 0);
-        if (target->bl_prev != NULL &&
+        if (target->bl_prev != nullptr &&
             (target->bl_type != BL::PC
              || (target->bl_type == BL::PC
                  && !pc_isdead(target->is_player()))))
@@ -2164,8 +2164,8 @@ int battle_check_target(dumb_ptr<block_list> src, dumb_ptr<block_list> target,
     PartyId s_p, t_p;
     dumb_ptr<block_list> ss = src;
 
-    nullpo_ret(src);
-    nullpo_ret(target);
+    nullpo_retz(src);
+    nullpo_retz(target);
 
     if (flag & BCT_ENEMY)
     {                           // 反転フラグ
@@ -2214,7 +2214,7 @@ int battle_check_target(dumb_ptr<block_list> src, dumb_ptr<block_list> target,
                     }
                 }
             }
-            if ((ss = map_id2bl(md->master_id)) == NULL)
+            if ((ss = map_id2bl(md->master_id)) == nullptr)
                 return -1;
         }
     }
@@ -2226,7 +2226,7 @@ int battle_check_target(dumb_ptr<block_list> src, dumb_ptr<block_list> target,
         && pc_isinvisible(target->is_player()))
         return -1;
 
-    if (src->bl_prev == NULL ||    // 死んでるならエラー
+    if (src->bl_prev == nullptr ||    // 死んでるならエラー
         (src->bl_type == BL::PC && pc_isdead(src->is_player())))
         return -1;
 
@@ -2275,8 +2275,8 @@ int battle_check_range(dumb_ptr<block_list> src, dumb_ptr<block_list> bl,
     struct walkpath_data wpd;
     int arange;
 
-    nullpo_ret(src);
-    nullpo_ret(bl);
+    nullpo_retz(src);
+    nullpo_retz(bl);
 
     dx = abs(bl->bl_x - src->bl_x);
     dy = abs(bl->bl_y - src->bl_y);
diff --git a/src/map/chrif.cpp b/src/map/chrif.cpp
index 55e5810..18482f6 100644
--- a/src/map/chrif.cpp
+++ b/src/map/chrif.cpp
@@ -257,7 +257,7 @@ int chrif_changemapserverack(Session *, const Packet_Fixed<0x2b06>& fixed)
 {
     dumb_ptr<map_session_data> sd = map_id2sd(account_to_block(fixed.account_id));
 
-    if (sd == NULL || sd->status_key.char_id != fixed.char_id)
+    if (sd == nullptr || sd->status_key.char_id != fixed.char_id)
         return -1;
 
     // I am fairly certain that this is not possible
@@ -480,7 +480,7 @@ int chrif_char_ask_name_answer(Session *, const Packet_Fixed<0x2b0f>& fixed)
     CharName player_name = fixed.char_name;
 
     dumb_ptr<map_session_data> sd = map_id2sd(account_to_block(acc));
-    if (acc && sd != NULL)
+    if (acc && sd != nullptr)
     {
         AString output;
         if (fixed.error == 1)   // player not found
@@ -621,7 +621,7 @@ void chrif_changedgm(Session *, const Packet_Fixed<0x2b0b>& fixed)
     if (battle_config.etc_log)
         PRINTF("chrif_changedgm: account: %d, GM level 0 -> %d.\n"_fmt, acc,
                 level);
-    if (sd != NULL)
+    if (sd != nullptr)
     {
         if (level)
             clif_displaymessage(sd->sess, "GM modification success."_s);
@@ -646,7 +646,7 @@ void chrif_changedsex(Session *, const Packet_Fixed<0x2b0d>& fixed)
     sd = map_id2sd(account_to_block(acc));
     if (acc)
     {
-        if (sd != NULL && sd->status.sex != sex)
+        if (sd != nullptr && sd->status.sex != sex)
         {
             if (sd->status.sex == SEX::MALE)
                 sd->sex = sd->status.sex = SEX::FEMALE;
@@ -670,7 +670,7 @@ void chrif_changedsex(Session *, const Packet_Fixed<0x2b0d>& fixed)
     }
     else
     {
-        if (sd != NULL)
+        if (sd != nullptr)
         {
             PRINTF("chrif_changedsex failed.\n"_fmt);
         }
@@ -716,7 +716,7 @@ static
 int chrif_accountreg2(Session *, const Packet_Head<0x2b11>& head, const std::vector<Packet_Repeat<0x2b11>>& repeat)
 {
     dumb_ptr<map_session_data> sd = map_id2sd(account_to_block(head.account_id));
-    if (sd == NULL)
+    if (sd == nullptr)
         return 1;
 
     size_t jlim = std::min(ACCOUNT_REG2_NUM, repeat.size());
@@ -739,7 +739,7 @@ int chrif_accountreg2(Session *, const Packet_Head<0x2b11>& head, const std::vec
 static
 int chrif_divorce(CharId char_id, CharId partner_id)
 {
-    dumb_ptr<map_session_data> sd = NULL;
+    dumb_ptr<map_session_data> sd = nullptr;
 
     if (!char_id || !partner_id)
         return 0;
@@ -757,7 +757,7 @@ int chrif_divorce(CharId char_id, CharId partner_id)
     }
 
     sd = map_nick2sd(map_charid2nick(partner_id));
-    nullpo_ret(sd);
+    nullpo_retz(sd);
     if (sd->status.partner_id == char_id)
         sd->status.partner_id = CharId();
 
@@ -795,7 +795,7 @@ int chrif_accountdeletion(Session *, const Packet_Fixed<0x2b13>& fixed)
     sd = map_id2sd(account_to_block(acc));
     if (acc)
     {
-        if (sd != NULL)
+        if (sd != nullptr)
         {
             sd->login_id1++;    // change identify, because if player come back in char within the 5 seconds, he can change its characters
             clif_displaymessage(sd->sess,
@@ -805,7 +805,7 @@ int chrif_accountdeletion(Session *, const Packet_Fixed<0x2b13>& fixed)
     }
     else
     {
-        if (sd != NULL)
+        if (sd != nullptr)
             PRINTF("chrif_accountdeletion failed - player not online.\n"_fmt);
     }
 
@@ -827,7 +827,7 @@ int chrif_accountban(Session *, const Packet_Fixed<0x2b14>& fixed)
     sd = map_id2sd(account_to_block(acc));
     if (acc)
     {
-        if (sd != NULL)
+        if (sd != nullptr)
         {
             sd->login_id1++;    // change identify, because if player come back in char within the 5 seconds, he can change its characters
             if (fixed.ban_not_status == 0)
@@ -894,7 +894,7 @@ int chrif_accountban(Session *, const Packet_Fixed<0x2b14>& fixed)
     }
     else
     {
-        if (sd != NULL)
+        if (sd != nullptr)
             PRINTF("chrif_accountban failed - player not online.\n"_fmt);
     }
 
diff --git a/src/map/clif.cpp b/src/map/clif.cpp
index 2ae9825..addfa59 100644
--- a/src/map/clif.cpp
+++ b/src/map/clif.cpp
@@ -274,7 +274,7 @@ void clif_send_sub(dumb_ptr<block_list> bl, const Buffer& buf,
             break;
     }
 
-    if (sd->sess != NULL)
+    if (sd->sess != nullptr)
     {
         {
             {
@@ -296,7 +296,7 @@ int clif_send(const Buffer& buf, dumb_ptr<block_list> bl, SendWho type)
 
     if (type != SendWho::ALL_CLIENT)
     {
-        nullpo_ret(bl);
+        nullpo_retz(bl);
 
         if (bl->bl_type == BL::PC)
         {
@@ -461,7 +461,7 @@ int clif_send(const Buffer& buf, dumb_ptr<block_list> bl, SendWho type)
  */
 int clif_authok(dumb_ptr<map_session_data> sd)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (!sd)
         return 0;
@@ -507,7 +507,7 @@ int clif_charselectok(BlockId id)
 {
     dumb_ptr<map_session_data> sd;
 
-    if ((sd = map_id2sd(id)) == NULL)
+    if ((sd = map_id2sd(id)) == nullptr)
         return 1;
 
     if (!sd->sess)
@@ -549,7 +549,7 @@ void clif_set009e(dumb_ptr<flooritem_data> fitem, Buffer& buf)
  */
 int clif_dropflooritem(dumb_ptr<flooritem_data> fitem)
 {
-    nullpo_ret(fitem);
+    nullpo_retz(fitem);
 
     if (!fitem->item_data.nameid)
         return 0;
@@ -567,7 +567,7 @@ int clif_dropflooritem(dumb_ptr<flooritem_data> fitem)
  */
 int clif_clearflooritem(dumb_ptr<flooritem_data> fitem, Session *s)
 {
-    nullpo_ret(fitem);
+    nullpo_retz(fitem);
 
     Packet_Fixed<0x00a1> fixed_a1;
     fixed_a1.block_id = fitem->bl_id;
@@ -591,7 +591,7 @@ int clif_clearflooritem(dumb_ptr<flooritem_data> fitem, Session *s)
  */
 int clif_clearchar(dumb_ptr<block_list> bl, BeingRemoveWhy type)
 {
-    nullpo_ret(bl);
+    nullpo_retz(bl);
 
     Packet_Fixed<0x0080> fixed_80;
     fixed_80.block_id = bl->bl_id;
@@ -931,7 +931,7 @@ earray<EQUIP, LOOK, LOOK::COUNT> equip_points //=
  */
 int clif_spawnpc(dumb_ptr<map_session_data> sd)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     Buffer buf;
     clif_set0078_alt_1d9(sd, buf);
@@ -949,7 +949,7 @@ int clif_spawnpc(dumb_ptr<map_session_data> sd)
     if (sd->bl_m->flag.get(MapFlag::RAIN))
         clif_specialeffect(sd, 161, 1);
 
-//        clif_changelook_accessories(sd, NULL);
+//        clif_changelook_accessories(sd, nullptr);
 
     return 0;
 }
@@ -960,7 +960,7 @@ int clif_spawnpc(dumb_ptr<map_session_data> sd)
  */
 int clif_spawnnpc(dumb_ptr<npc_data> nd)
 {
-    nullpo_ret(nd);
+    nullpo_retz(nd);
 
     if (nd->npc_class == NEGATIVE_SPECIES || nd->flag & 1 || nd->npc_class == INVISIBLE_CLASS)
         return 0;
@@ -983,7 +983,7 @@ int clif_spawnnpc(dumb_ptr<npc_data> nd)
 
 int clif_spawn_fake_npc_for_player(dumb_ptr<map_session_data> sd, BlockId fake_npc_id)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     Session *s = sd->sess;
 
@@ -1028,7 +1028,7 @@ int clif_spawn_fake_npc_for_player(dumb_ptr<map_session_data> sd, BlockId fake_n
  */
 int clif_spawnmob(dumb_ptr<mob_data> md)
 {
-    nullpo_ret(md);
+    nullpo_retz(md);
 
     {
         Packet_Fixed<0x007c> fixed_7c;
@@ -1058,7 +1058,7 @@ int clif_spawnmob(dumb_ptr<mob_data> md)
 static
 int clif_servertick(dumb_ptr<map_session_data> sd)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     Session *s = sd->sess;
     Packet_Fixed<0x007f> fixed_7f;
@@ -1074,7 +1074,7 @@ int clif_servertick(dumb_ptr<map_session_data> sd)
  */
 int clif_walkok(dumb_ptr<map_session_data> sd)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     Session *s = sd->sess;
     Packet_Fixed<0x0087> fixed_87;
@@ -1095,7 +1095,7 @@ int clif_walkok(dumb_ptr<map_session_data> sd)
  */
 int clif_movechar(dumb_ptr<map_session_data> sd)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     Buffer buf;
     clif_set007b(sd, buf);
@@ -1201,7 +1201,7 @@ void clif_fixpos(dumb_ptr<block_list> bl)
  */
 int clif_npcbuysell(dumb_ptr<map_session_data> sd, BlockId id)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     Session *s = sd->sess;
     Packet_Fixed<0x00c4> fixed_c4;
@@ -1220,8 +1220,8 @@ int clif_buylist(dumb_ptr<map_session_data> sd, dumb_ptr<npc_data_shop> nd)
     struct item_data *id;
     int i, val;
 
-    nullpo_ret(sd);
-    nullpo_ret(nd);
+    nullpo_retz(sd);
+    nullpo_retz(nd);
 
     Session *s = sd->sess;
     std::vector<Packet_Repeat<0x00c6>> repeat_c6(nd->shop_items.size());
@@ -1245,7 +1245,7 @@ int clif_buylist(dumb_ptr<map_session_data> sd, dumb_ptr<npc_data_shop> nd)
  */
 int clif_selllist(dumb_ptr<map_session_data> sd)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     Session *s = sd->sess;
     std::vector<Packet_Repeat<0x00c7>> repeat_c7;
@@ -1359,7 +1359,7 @@ void clif_scriptinputstr(dumb_ptr<map_session_data> sd, BlockId npcid)
  */
 int clif_additem(dumb_ptr<map_session_data> sd, IOff0 n, int amount, PickupFail fail)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     Session *s = sd->sess;
     Packet_Fixed<0x00a0> fixed_a0;
@@ -1373,7 +1373,7 @@ int clif_additem(dumb_ptr<map_session_data> sd, IOff0 n, int amount, PickupFail
     else
     {
         if (!n.ok() || !sd->status.inventory[n].nameid
-            || sd->inventory_data[n] == NULL)
+            || sd->inventory_data[n] == nullptr)
             return 1;
 
         fixed_a0.ioff2 = n.shift();
@@ -1429,7 +1429,7 @@ void clif_itemlist(dumb_ptr<map_session_data> sd)
     for (IOff0 i : IOff0::iter())
     {
         if (!sd->status.inventory[i].nameid
-            || sd->inventory_data[i] == NULL
+            || sd->inventory_data[i] == nullptr
             || itemdb_isequip2(sd->inventory_data[i]))
             continue;
         Packet_Repeat<0x01ee> info;
@@ -1473,7 +1473,7 @@ void clif_equiplist(dumb_ptr<map_session_data> sd)
     for (IOff0 i : IOff0::iter())
     {
         if (!sd->status.inventory[i].nameid
-            || sd->inventory_data[i] == NULL
+            || sd->inventory_data[i] == nullptr
             || !itemdb_isequip2(sd->inventory_data[i]))
             continue;
         Packet_Repeat<0x00a4> info;
@@ -1508,8 +1508,8 @@ void clif_equiplist(dumb_ptr<map_session_data> sd)
  */
 int clif_storageitemlist(dumb_ptr<map_session_data> sd, Storage *stor)
 {
-    nullpo_ret(sd);
-    nullpo_ret(stor);
+    nullpo_retz(sd);
+    nullpo_retz(stor);
 
     Session *s = sd->sess;
     std::vector<Packet_Repeat<0x01f0>> repeat_1f0;
@@ -1520,7 +1520,7 @@ int clif_storageitemlist(dumb_ptr<map_session_data> sd, Storage *stor)
 
         struct item_data *id;
         id = itemdb_search(stor->storage_[i].nameid);
-        nullpo_ret(id);
+        nullpo_retz(id);
         if (itemdb_isequip2(id))
             continue;
 
@@ -1550,8 +1550,8 @@ int clif_storageitemlist(dumb_ptr<map_session_data> sd, Storage *stor)
  */
 int clif_storageequiplist(dumb_ptr<map_session_data> sd, Storage *stor)
 {
-    nullpo_ret(sd);
-    nullpo_ret(stor);
+    nullpo_retz(sd);
+    nullpo_retz(stor);
 
     Session *s = sd->sess;
     std::vector<Packet_Repeat<0x00a6>> repeat_a6;
@@ -1562,7 +1562,7 @@ int clif_storageequiplist(dumb_ptr<map_session_data> sd, Storage *stor)
 
         struct item_data *id;
         id = itemdb_search(stor->storage_[i].nameid);
-        nullpo_ret(id);
+        nullpo_retz(id);
         if (!itemdb_isequip2(id))
             continue;
         Packet_Repeat<0x00a6> info;
@@ -1596,7 +1596,7 @@ int clif_storageequiplist(dumb_ptr<map_session_data> sd, Storage *stor)
  */
 int clif_updatestatus(dumb_ptr<map_session_data> sd, SP type)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     Session *s = sd->sess;
 
@@ -1809,15 +1809,15 @@ not_141:
  */
 int clif_changelook(dumb_ptr<block_list> bl, LOOK type, int val)
 {
-    return clif_changelook_towards(bl, type, val, NULL);
+    return clif_changelook_towards(bl, type, val, nullptr);
 }
 
 int clif_changelook_towards(dumb_ptr<block_list> bl, LOOK type, int val,
                              dumb_ptr<map_session_data> dstsd)
 {
-    dumb_ptr<map_session_data> sd = NULL;
+    dumb_ptr<map_session_data> sd = nullptr;
 
-    nullpo_ret(bl);
+    nullpo_retz(bl);
 
     if (bl->bl_type == BL::PC)
         sd = bl->is_player();
@@ -1898,7 +1898,7 @@ int clif_changelook_towards(dumb_ptr<block_list> bl, LOOK type, int val,
 static
 int clif_initialstatus(dumb_ptr<map_session_data> sd)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     Session *s = sd->sess;
 
@@ -1954,7 +1954,7 @@ int clif_initialstatus(dumb_ptr<map_session_data> sd)
  */
 int clif_arrowequip(dumb_ptr<map_session_data> sd, IOff0 val)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     sd->attacktarget = BlockId();
 
@@ -1972,7 +1972,7 @@ int clif_arrowequip(dumb_ptr<map_session_data> sd, IOff0 val)
  */
 int clif_arrow_fail(dumb_ptr<map_session_data> sd, int type)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     Session *s = sd->sess;
 
@@ -1989,7 +1989,7 @@ int clif_arrow_fail(dumb_ptr<map_session_data> sd, int type)
  */
 int clif_statusupack(dumb_ptr<map_session_data> sd, SP type, int ok, int val)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     Session *s = sd->sess;
     Packet_Fixed<0x00bc> fixed_bc;
@@ -2007,7 +2007,7 @@ int clif_statusupack(dumb_ptr<map_session_data> sd, SP type, int ok, int val)
  */
 int clif_equipitemack(dumb_ptr<map_session_data> sd, IOff0 n, EPOS pos, int ok)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     Session *s = sd->sess;
     Packet_Fixed<0x00aa> fixed_aa;
@@ -2025,7 +2025,7 @@ int clif_equipitemack(dumb_ptr<map_session_data> sd, IOff0 n, EPOS pos, int ok)
  */
 int clif_unequipitemack(dumb_ptr<map_session_data> sd, IOff0 n, EPOS pos, int ok)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     Session *s = sd->sess;
     Packet_Fixed<0x00ac> fixed_ac;
@@ -2043,7 +2043,7 @@ int clif_unequipitemack(dumb_ptr<map_session_data> sd, IOff0 n, EPOS pos, int ok
  */
 int clif_misceffect(dumb_ptr<block_list> bl, int type)
 {
-    nullpo_ret(bl);
+    nullpo_retz(bl);
 
     Packet_Fixed<0x019b> fixed_19b;
     fixed_19b.block_id = bl->bl_id;
@@ -2063,7 +2063,7 @@ int clif_changeoption(dumb_ptr<block_list> bl)
 {
     eptr<struct status_change, StatusChange, StatusChange::MAX_STATUSCHANGE> sc_data;
 
-    nullpo_ret(bl);
+    nullpo_retz(bl);
 
     Option option = *battle_get_option(bl);
     sc_data = battle_get_sc_data(bl);
@@ -2088,7 +2088,7 @@ int clif_changeoption(dumb_ptr<block_list> bl)
 int clif_useitemack(dumb_ptr<map_session_data> sd, IOff0 index, int amount,
                      int ok)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (!ok)
     {
@@ -2190,7 +2190,7 @@ void clif_tradeadditem(dumb_ptr<map_session_data> sd,
 int clif_tradeitemok(dumb_ptr<map_session_data> sd, IOff2 index2, int amount,
                       int fail)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     Session *s = sd->sess;
     Packet_Fixed<0x01b1> fixed_1b1;
@@ -2208,7 +2208,7 @@ int clif_tradeitemok(dumb_ptr<map_session_data> sd, IOff2 index2, int amount,
  */
 int clif_tradedeal_lock(dumb_ptr<map_session_data> sd, int fail)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     Session *s = sd->sess;
     Packet_Fixed<0x00ec> fixed_ec;
@@ -2224,7 +2224,7 @@ int clif_tradedeal_lock(dumb_ptr<map_session_data> sd, int fail)
  */
 int clif_tradecancelled(dumb_ptr<map_session_data> sd)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     Session *s = sd->sess;
     Packet_Fixed<0x00ee> fixed_ee;
@@ -2239,7 +2239,7 @@ int clif_tradecancelled(dumb_ptr<map_session_data> sd)
  */
 int clif_tradecompleted(dumb_ptr<map_session_data> sd, int fail)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     Session *s = sd->sess;
     Packet_Fixed<0x00f0> fixed_f0;
@@ -2256,8 +2256,8 @@ int clif_tradecompleted(dumb_ptr<map_session_data> sd, int fail)
 int clif_updatestorageamount(dumb_ptr<map_session_data> sd,
                               Storage *stor)
 {
-    nullpo_ret(sd);
-    nullpo_ret(stor);
+    nullpo_retz(sd);
+    nullpo_retz(stor);
 
     Session *s = sd->sess;
     Packet_Fixed<0x00f2> fixed_f2;
@@ -2275,8 +2275,8 @@ int clif_updatestorageamount(dumb_ptr<map_session_data> sd,
 int clif_storageitemadded(dumb_ptr<map_session_data> sd, Storage *stor,
         SOff0 index, int amount)
 {
-    nullpo_ret(sd);
-    nullpo_ret(stor);
+    nullpo_retz(sd);
+    nullpo_retz(stor);
 
     Session *s = sd->sess;
     Packet_Fixed<0x00f4> fixed_f4;
@@ -2304,7 +2304,7 @@ int clif_storageitemadded(dumb_ptr<map_session_data> sd, Storage *stor,
 int clif_storageitemremoved(dumb_ptr<map_session_data> sd, SOff0 index,
                              int amount)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     Session *s = sd->sess;
     Packet_Fixed<0x00f6> fixed_f6;
@@ -2321,7 +2321,7 @@ int clif_storageitemremoved(dumb_ptr<map_session_data> sd, SOff0 index,
  */
 int clif_storageclose(dumb_ptr<map_session_data> sd)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     Session *s = sd->sess;
     Packet_Fixed<0x00f8> fixed_f8;
@@ -2397,7 +2397,7 @@ void clif_getareachar_npc(dumb_ptr<map_session_data> sd, dumb_ptr<npc_data> nd)
  */
 int clif_movemob(dumb_ptr<mob_data> md)
 {
-    nullpo_ret(md);
+    nullpo_retz(md);
 
     Buffer buf;
     clif_mob007b(md, buf);
@@ -2412,7 +2412,7 @@ int clif_movemob(dumb_ptr<mob_data> md)
  */
 int clif_fixmobpos(dumb_ptr<mob_data> md)
 {
-    nullpo_ret(md);
+    nullpo_retz(md);
 
     if (md->state.state == MS::WALK)
     {
@@ -2436,7 +2436,7 @@ int clif_fixmobpos(dumb_ptr<mob_data> md)
  */
 int clif_fixpcpos(dumb_ptr<map_session_data> sd)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (sd->walktimer)
     {
@@ -2450,7 +2450,7 @@ int clif_fixpcpos(dumb_ptr<map_session_data> sd)
         clif_set0078_main_1d8(sd, buf);
         clif_send(buf, sd, SendWho::AREA);
     }
-    clif_changelook_accessories(sd, NULL);
+    clif_changelook_accessories(sd, nullptr);
 
     return 0;
 }
@@ -2465,8 +2465,8 @@ int clif_damage(dumb_ptr<block_list> src, dumb_ptr<block_list> dst,
 {
     eptr<struct status_change, StatusChange, StatusChange::MAX_STATUSCHANGE> sc_data;
 
-    nullpo_ret(src);
-    nullpo_ret(dst);
+    nullpo_retz(src);
+    nullpo_retz(dst);
 
     sc_data = battle_get_sc_data(dst);
 
@@ -2683,7 +2683,7 @@ void clif_mobinsight(dumb_ptr<block_list> bl, dumb_ptr<mob_data> md)
 int clif_skillinfo(dumb_ptr<map_session_data> sd, SkillID skillid, int type,
                     int range)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     Session *s = sd->sess;
     if (!sd->status.skill[skillid].lv)
@@ -2755,7 +2755,7 @@ void clif_skillinfoblock(dumb_ptr<map_session_data> sd)
  */
 int clif_skillup(dumb_ptr<map_session_data> sd, SkillID skill_num)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     Session *s = sd->sess;
     Packet_Fixed<0x010e> fixed_10e;
@@ -2793,7 +2793,7 @@ int clif_skillcastcancel(dumb_ptr<block_list> bl)
 int clif_skill_fail(dumb_ptr<map_session_data> sd, SkillID skill_id, int type,
                      int btype)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     Session *s = sd->sess;
 
@@ -2823,8 +2823,8 @@ int clif_skill_damage(dumb_ptr<block_list> src, dumb_ptr<block_list> dst,
 {
     eptr<struct status_change, StatusChange, StatusChange::MAX_STATUSCHANGE> sc_data;
 
-    nullpo_ret(src);
-    nullpo_ret(dst);
+    nullpo_retz(src);
+    nullpo_retz(dst);
 
     sc_data = battle_get_sc_data(dst);
 
@@ -2851,7 +2851,7 @@ int clif_skill_damage(dumb_ptr<block_list> src, dumb_ptr<block_list> dst,
  */
 int clif_status_change(dumb_ptr<block_list> bl, StatusChange type, int flag)
 {
-    nullpo_ret(bl);
+    nullpo_retz(bl);
 
     Packet_Fixed<0x0196> fixed_196;
     fixed_196.sc_type = type;
@@ -2944,7 +2944,7 @@ void clif_wis_end(Session *s, int flag) // R 0098 <type>.B: 0: success to send w
  */
 int clif_party_created(dumb_ptr<map_session_data> sd, int flag)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     Session *s = sd->sess;
     Packet_Fixed<0x00fa> fixed_fa;
@@ -2960,9 +2960,9 @@ int clif_party_created(dumb_ptr<map_session_data> sd, int flag)
 int clif_party_info(PartyPair p, Session *s)
 {
     int i;
-    dumb_ptr<map_session_data> sd = NULL;
+    dumb_ptr<map_session_data> sd = nullptr;
 
-    nullpo_ret(p);
+    nullpo_retz(p);
 
     Packet_Head<0x00fb> head_fb;
     std::vector<Packet_Repeat<0x00fb>> repeat_fb;
@@ -2973,7 +2973,7 @@ int clif_party_info(PartyPair p, Session *s)
         if (m->account_id)
         {
             Packet_Repeat<0x00fb> info;
-            if (sd == NULL)
+            if (sd == nullptr)
                 sd = dumb_ptr<map_session_data>(m->sd);
 
             info.account_id = m->account_id;
@@ -2991,7 +2991,7 @@ int clif_party_info(PartyPair p, Session *s)
         return 9;
     }
     // else, send it to all the party, if they exist.
-    if (sd != NULL)
+    if (sd != nullptr)
     {
         Buffer buf = create_vpacket<0x00fb, 28, 46>(head_fb, repeat_fb);
         clif_send(buf, sd, SendWho::PARTY);
@@ -3061,14 +3061,14 @@ void clif_party_option(PartyPair p, dumb_ptr<map_session_data> sd, int flag)
 {
     nullpo_retv(p);
 
-    if (sd == NULL && flag == 0)
+    if (sd == nullptr && flag == 0)
     {
         int i;
         for (i = 0; i < MAX_PARTY; i++)
-            if ((sd = map_id2sd(account_to_block(p->member[i].account_id))) != NULL)
+            if ((sd = map_id2sd(account_to_block(p->member[i].account_id))) != nullptr)
                 break;
     }
-    if (sd == NULL)
+    if (sd == nullptr)
         return;
     Packet_Fixed<0x0101> fixed_101;
     fixed_101.exp = ((flag & 0x01) ? 2 : p->exp);
@@ -3102,20 +3102,20 @@ void clif_party_leaved(PartyPair p, dumb_ptr<map_session_data> sd,
 
     if ((flag & 0xf0) == 0)
     {
-        if (sd == NULL)
+        if (sd == nullptr)
             for (i = 0; i < MAX_PARTY; i++)
             {
                 sd = dumb_ptr<map_session_data>(p->member[i].sd);
-                if (sd != NULL)
+                if (sd != nullptr)
                     break;
             }
-        if (sd != NULL)
+        if (sd != nullptr)
         {
             Buffer buf = create_fpacket<0x0105, 31>(fixed_105);
             clif_send(buf, sd, SendWho::PARTY);
         }
     }
-    else if (sd != NULL)
+    else if (sd != nullptr)
     {
         send_fpacket<0x0105, 31>(sd->sess, fixed_105);
     }
@@ -3136,10 +3136,10 @@ void clif_party_message(PartyPair p, AccountId account_id, XString mes)
     for (i = 0; i < MAX_PARTY; i++)
     {
         sd = dumb_ptr<map_session_data>(p->member[i].sd);
-        if (sd != NULL)
+        if (sd != nullptr)
             break;
     }
-    if (sd != NULL)
+    if (sd != nullptr)
     {
         Packet_Head<0x0109> head_109;
         head_109.account_id = account_id;
@@ -3154,7 +3154,7 @@ void clif_party_message(PartyPair p, AccountId account_id, XString mes)
  */
 int clif_party_xy(PartyPair , dumb_ptr<map_session_data> sd)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     Packet_Fixed<0x0107> fixed_107;
     fixed_107.account_id = sd->status_key.account_id;
@@ -3171,7 +3171,7 @@ int clif_party_xy(PartyPair , dumb_ptr<map_session_data> sd)
  */
 int clif_party_hp(PartyPair , dumb_ptr<map_session_data> sd)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     Packet_Fixed<0x0106> fixed_106;
     fixed_106.account_id = sd->status_key.account_id;
@@ -3189,8 +3189,8 @@ int clif_party_hp(PartyPair , dumb_ptr<map_session_data> sd)
  */
 int clif_movetoattack(dumb_ptr<map_session_data> sd, dumb_ptr<block_list> bl)
 {
-    nullpo_ret(sd);
-    nullpo_ret(bl);
+    nullpo_retz(sd);
+    nullpo_retz(bl);
 
     Session *s = sd->sess;
     Packet_Fixed<0x0139> fixed_139;
@@ -3210,7 +3210,7 @@ int clif_movetoattack(dumb_ptr<map_session_data> sd, dumb_ptr<block_list> bl)
  */
 int clif_mvp_effect(dumb_ptr<map_session_data> sd)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     Packet_Fixed<0x010c> fixed_10c;
     fixed_10c.block_id = sd->bl_id;
@@ -3275,7 +3275,7 @@ void clif_sitting(Session *, dumb_ptr<map_session_data> sd)
 static
 int clif_GM_kickack(dumb_ptr<map_session_data> sd, AccountId id)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     Session *s = sd->sess;
     Packet_Fixed<0x00cd> fixed_cd;
@@ -3290,7 +3290,7 @@ void clif_do_quit_game(Session *s, dumb_ptr<map_session_data> sd);
 int clif_GM_kick(dumb_ptr<map_session_data> sd, dumb_ptr<map_session_data> tsd,
                   int type)
 {
-    nullpo_ret(tsd);
+    nullpo_retz(tsd);
 
     if (type)
         clif_GM_kickack(sd, tsd->status_key.account_id);
@@ -3304,7 +3304,7 @@ int clif_GM_kick(dumb_ptr<map_session_data> sd, dumb_ptr<map_session_data> tsd,
 // displaying special effects (npcs, weather, etc) [Valaris]
 int clif_specialeffect(dumb_ptr<block_list> bl, int type, int flag)
 {
-    nullpo_ret(bl);
+    nullpo_retz(bl);
 
     Packet_Fixed<0x019b> fixed_19b;
     fixed_19b.block_id = bl->bl_id;
@@ -3401,7 +3401,7 @@ RecvResult clif_parse_WantToConnection(Session *s, dumb_ptr<map_session_data> sd
 static
 RecvResult clif_parse_LoadEndAck(Session *s, dumb_ptr<map_session_data> sd)
 {
-    if (sd->bl_prev != NULL)
+    if (sd->bl_prev != nullptr)
         return RecvResult::Error;
 
     Packet_Fixed<0x007d> fixed;
@@ -3479,7 +3479,7 @@ RecvResult clif_parse_LoadEndAck(Session *s, dumb_ptr<map_session_data> sd)
     clif_changeoption(sd);
     // broken equipment
 
-//        clif_changelook_accessories(sd, NULL);
+//        clif_changelook_accessories(sd, nullptr);
 
     map_foreachinarea(std::bind(clif_getareachar, ph::_1, sd),
             sd->bl_m,
@@ -3613,7 +3613,7 @@ RecvResult clif_parse_GetCharNameRequest(Session *s, dumb_ptr<map_session_data>
 
     account_id = fixed.block_id;
     bl = map_id2bl(account_id);
-    if (bl == NULL)
+    if (bl == nullptr)
         return rv;
 
     Packet_Fixed<0x0095> fixed_95;
@@ -3999,7 +3999,7 @@ RecvResult clif_parse_Wis(Session *s, dumb_ptr<map_session_data> sd)
     if (rv != RecvResult::Complete)
         return rv;
 
-    dumb_ptr<map_session_data> dstsd = NULL;
+    dumb_ptr<map_session_data> dstsd = nullptr;
 
     AString mbuf = clif_validate_chat(sd, ChatType::Whisper, repeat);
     if (!mbuf)
@@ -4081,7 +4081,7 @@ RecvResult clif_parse_TakeItem(Session *s, dumb_ptr<map_session_data> sd)
         || sd->opt1 != Opt1::ZERO)   //会話禁止
         return rv;
 
-    if (fitem == NULL || fitem->bl_m != sd->bl_m)
+    if (fitem == nullptr || fitem->bl_m != sd->bl_m)
         return rv;
 
     if (abs(sd->bl_x - fitem->bl_x) >= 2
@@ -4808,550 +4808,550 @@ RecvResult clif_parse_PartyMessage(Session *s, dumb_ptr<map_session_data> sd)
 
 func_table clif_parse_func_table[0x0220] =
 {
-    {0,     10, NULL,                           },  // 0x0000
-    {0,     0,  NULL,                           },  // 0x0001
-    {0,     0,  NULL,                           },  // 0x0002
-    {0,     0,  NULL,                           },  // 0x0003
-    {0,     0,  NULL,                           },  // 0x0004
-    {0,     0,  NULL,                           },  // 0x0005
-    {0,     0,  NULL,                           },  // 0x0006
-    {0,     0,  NULL,                           },  // 0x0007
-    {0,     0,  NULL,                           },  // 0x0008
-    {0,     0,  NULL,                           },  // 0x0009
-    {0,     0,  NULL,                           },  // 0x000a
-    {0,     0,  NULL,                           },  // 0x000b
-    {0,     0,  NULL,                           },  // 0x000c
-    {0,     0,  NULL,                           },  // 0x000d
-    {0,     0,  NULL,                           },  // 0x000e
-    {0,     0,  NULL,                           },  // 0x000f
-    {0,     0,  NULL,                           },  // 0x0010
-    {0,     0,  NULL,                           },  // 0x0011
-    {0,     0,  NULL,                           },  // 0x0012
-    {0,     0,  NULL,                           },  // 0x0013
-    {0,     0,  NULL,                           },  // 0x0014
-    {0,     0,  NULL,                           },  // 0x0015
-    {0,     0,  NULL,                           },  // 0x0016
-    {0,     0,  NULL,                           },  // 0x0017
-    {0,     0,  NULL,                           },  // 0x0018
-    {0,     0,  NULL,                           },  // 0x0019
-    {0,     0,  NULL,                           },  // 0x001a
-    {0,     0,  NULL,                           },  // 0x001b
-    {0,     0,  NULL,                           },  // 0x001c
-    {0,     0,  NULL,                           },  // 0x001d
-    {0,     0,  NULL,                           },  // 0x001e
-    {0,     0,  NULL,                           },  // 0x001f
-    {0,     0,  NULL,                           },  // 0x0020
-    {0,     0,  NULL,                           },  // 0x0021
-    {0,     0,  NULL,                           },  // 0x0022
-    {0,     0,  NULL,                           },  // 0x0023
-    {0,     0,  NULL,                           },  // 0x0024
-    {0,     0,  NULL,                           },  // 0x0025
-    {0,     0,  NULL,                           },  // 0x0026
-    {0,     0,  NULL,                           },  // 0x0027
-    {0,     0,  NULL,                           },  // 0x0028
-    {0,     0,  NULL,                           },  // 0x0029
-    {0,     0,  NULL,                           },  // 0x002a
-    {0,     0,  NULL,                           },  // 0x002b
-    {0,     0,  NULL,                           },  // 0x002c
-    {0,     0,  NULL,                           },  // 0x002d
-    {0,     0,  NULL,                           },  // 0x002e
-    {0,     0,  NULL,                           },  // 0x002f
-    {0,     0,  NULL,                           },  // 0x0030
-    {0,     0,  NULL,                           },  // 0x0031
-    {0,     0,  NULL,                           },  // 0x0032
-    {0,     0,  NULL,                           },  // 0x0033
-    {0,     0,  NULL,                           },  // 0x0034
-    {0,     0,  NULL,                           },  // 0x0035
-    {0,     0,  NULL,                           },  // 0x0036
-    {0,     0,  NULL,                           },  // 0x0037
-    {0,     0,  NULL,                           },  // 0x0038
-    {0,     0,  NULL,                           },  // 0x0039
-    {0,     0,  NULL,                           },  // 0x003a
-    {0,     0,  NULL,                           },  // 0x003b
-    {0,     0,  NULL,                           },  // 0x003c
-    {0,     0,  NULL,                           },  // 0x003d
-    {0,     0,  NULL,                           },  // 0x003e
-    {0,     0,  NULL,                           },  // 0x003f
-    {0,     0,  NULL,                           },  // 0x0040
-    {0,     0,  NULL,                           },  // 0x0041
-    {0,     0,  NULL,                           },  // 0x0042
-    {0,     0,  NULL,                           },  // 0x0043
-    {0,     0,  NULL,                           },  // 0x0044
-    {0,     0,  NULL,                           },  // 0x0045
-    {0,     0,  NULL,                           },  // 0x0046
-    {0,     0,  NULL,                           },  // 0x0047
-    {0,     0,  NULL,                           },  // 0x0048
-    {0,     0,  NULL,                           },  // 0x0049
-    {0,     0,  NULL,                           },  // 0x004a
-    {0,     0,  NULL,                           },  // 0x004b
-    {0,     0,  NULL,                           },  // 0x004c
-    {0,     0,  NULL,                           },  // 0x004d
-    {0,     0,  NULL,                           },  // 0x004e
-    {0,     0,  NULL,                           },  // 0x004f
-    {0,     0,  NULL,                           },  // 0x0050
-    {0,     0,  NULL,                           },  // 0x0051
-    {0,     0,  NULL,                           },  // 0x0052
-    {0,     0,  NULL,                           },  // 0x0053
-    {0,     0,  NULL,                           },  // 0x0054
-    {0,     0,  NULL,                           },  // 0x0055
-    {0,     0,  NULL,                           },  // 0x0056
-    {0,     0,  NULL,                           },  // 0x0057
-    {0,     0,  NULL,                           },  // 0x0058
-    {0,     0,  NULL,                           },  // 0x0059
-    {0,     0,  NULL,                           },  // 0x005a
-    {0,     0,  NULL,                           },  // 0x005b
-    {0,     0,  NULL,                           },  // 0x005c
-    {0,     0,  NULL,                           },  // 0x005d
-    {0,     0,  NULL,                           },  // 0x005e
-    {0,     0,  NULL,                           },  // 0x005f
-    {0,     0,  NULL,                           },  // 0x0060
-    {0,     0,  NULL,                           },  // 0x0061
-    {0,     0,  NULL,                           },  // 0x0062
-    {0,     VAR,NULL,                           },  // 0x0063
-    {0,     55, NULL,                           },  // 0x0064
-    {0,     17, NULL,                           },  // 0x0065
-    {0,     3,  NULL,                           },  // 0x0066
-    {0,     37, NULL,                           },  // 0x0067
-    {0,     46, NULL,                           },  // 0x0068
-    {0,     VAR,NULL,                           },  // 0x0069
-    {0,     23, NULL,                           },  // 0x006a
-    {0,     VAR,NULL,                           },  // 0x006b
-    {0,     3,  NULL,                           },  // 0x006c
-    {0,     108,NULL,                           },  // 0x006d
-    {0,     3,  NULL,                           },  // 0x006e
-    {0,     2,  NULL,                           },  // 0x006f
-    {0,     3,  NULL,                           },  // 0x0070
-    {0,     28, NULL,                           },  // 0x0071
+    {0,     10, nullptr,                        },  // 0x0000
+    {0,     0,  nullptr,                        },  // 0x0001
+    {0,     0,  nullptr,                        },  // 0x0002
+    {0,     0,  nullptr,                        },  // 0x0003
+    {0,     0,  nullptr,                        },  // 0x0004
+    {0,     0,  nullptr,                        },  // 0x0005
+    {0,     0,  nullptr,                        },  // 0x0006
+    {0,     0,  nullptr,                        },  // 0x0007
+    {0,     0,  nullptr,                        },  // 0x0008
+    {0,     0,  nullptr,                        },  // 0x0009
+    {0,     0,  nullptr,                        },  // 0x000a
+    {0,     0,  nullptr,                        },  // 0x000b
+    {0,     0,  nullptr,                        },  // 0x000c
+    {0,     0,  nullptr,                        },  // 0x000d
+    {0,     0,  nullptr,                        },  // 0x000e
+    {0,     0,  nullptr,                        },  // 0x000f
+    {0,     0,  nullptr,                        },  // 0x0010
+    {0,     0,  nullptr,                        },  // 0x0011
+    {0,     0,  nullptr,                        },  // 0x0012
+    {0,     0,  nullptr,                        },  // 0x0013
+    {0,     0,  nullptr,                        },  // 0x0014
+    {0,     0,  nullptr,                        },  // 0x0015
+    {0,     0,  nullptr,                        },  // 0x0016
+    {0,     0,  nullptr,                        },  // 0x0017
+    {0,     0,  nullptr,                        },  // 0x0018
+    {0,     0,  nullptr,                        },  // 0x0019
+    {0,     0,  nullptr,                        },  // 0x001a
+    {0,     0,  nullptr,                        },  // 0x001b
+    {0,     0,  nullptr,                        },  // 0x001c
+    {0,     0,  nullptr,                        },  // 0x001d
+    {0,     0,  nullptr,                        },  // 0x001e
+    {0,     0,  nullptr,                        },  // 0x001f
+    {0,     0,  nullptr,                        },  // 0x0020
+    {0,     0,  nullptr,                        },  // 0x0021
+    {0,     0,  nullptr,                        },  // 0x0022
+    {0,     0,  nullptr,                        },  // 0x0023
+    {0,     0,  nullptr,                        },  // 0x0024
+    {0,     0,  nullptr,                        },  // 0x0025
+    {0,     0,  nullptr,                        },  // 0x0026
+    {0,     0,  nullptr,                        },  // 0x0027
+    {0,     0,  nullptr,                        },  // 0x0028
+    {0,     0,  nullptr,                        },  // 0x0029
+    {0,     0,  nullptr,                        },  // 0x002a
+    {0,     0,  nullptr,                        },  // 0x002b
+    {0,     0,  nullptr,                        },  // 0x002c
+    {0,     0,  nullptr,                        },  // 0x002d
+    {0,     0,  nullptr,                        },  // 0x002e
+    {0,     0,  nullptr,                        },  // 0x002f
+    {0,     0,  nullptr,                        },  // 0x0030
+    {0,     0,  nullptr,                        },  // 0x0031
+    {0,     0,  nullptr,                        },  // 0x0032
+    {0,     0,  nullptr,                        },  // 0x0033
+    {0,     0,  nullptr,                        },  // 0x0034
+    {0,     0,  nullptr,                        },  // 0x0035
+    {0,     0,  nullptr,                        },  // 0x0036
+    {0,     0,  nullptr,                        },  // 0x0037
+    {0,     0,  nullptr,                        },  // 0x0038
+    {0,     0,  nullptr,                        },  // 0x0039
+    {0,     0,  nullptr,                        },  // 0x003a
+    {0,     0,  nullptr,                        },  // 0x003b
+    {0,     0,  nullptr,                        },  // 0x003c
+    {0,     0,  nullptr,                        },  // 0x003d
+    {0,     0,  nullptr,                        },  // 0x003e
+    {0,     0,  nullptr,                        },  // 0x003f
+    {0,     0,  nullptr,                        },  // 0x0040
+    {0,     0,  nullptr,                        },  // 0x0041
+    {0,     0,  nullptr,                        },  // 0x0042
+    {0,     0,  nullptr,                        },  // 0x0043
+    {0,     0,  nullptr,                        },  // 0x0044
+    {0,     0,  nullptr,                        },  // 0x0045
+    {0,     0,  nullptr,                        },  // 0x0046
+    {0,     0,  nullptr,                        },  // 0x0047
+    {0,     0,  nullptr,                        },  // 0x0048
+    {0,     0,  nullptr,                        },  // 0x0049
+    {0,     0,  nullptr,                        },  // 0x004a
+    {0,     0,  nullptr,                        },  // 0x004b
+    {0,     0,  nullptr,                        },  // 0x004c
+    {0,     0,  nullptr,                        },  // 0x004d
+    {0,     0,  nullptr,                        },  // 0x004e
+    {0,     0,  nullptr,                        },  // 0x004f
+    {0,     0,  nullptr,                        },  // 0x0050
+    {0,     0,  nullptr,                        },  // 0x0051
+    {0,     0,  nullptr,                        },  // 0x0052
+    {0,     0,  nullptr,                        },  // 0x0053
+    {0,     0,  nullptr,                        },  // 0x0054
+    {0,     0,  nullptr,                        },  // 0x0055
+    {0,     0,  nullptr,                        },  // 0x0056
+    {0,     0,  nullptr,                        },  // 0x0057
+    {0,     0,  nullptr,                        },  // 0x0058
+    {0,     0,  nullptr,                        },  // 0x0059
+    {0,     0,  nullptr,                        },  // 0x005a
+    {0,     0,  nullptr,                        },  // 0x005b
+    {0,     0,  nullptr,                        },  // 0x005c
+    {0,     0,  nullptr,                        },  // 0x005d
+    {0,     0,  nullptr,                        },  // 0x005e
+    {0,     0,  nullptr,                        },  // 0x005f
+    {0,     0,  nullptr,                        },  // 0x0060
+    {0,     0,  nullptr,                        },  // 0x0061
+    {0,     0,  nullptr,                        },  // 0x0062
+    {0,     VAR,nullptr,                        },  // 0x0063
+    {0,     55, nullptr,                        },  // 0x0064
+    {0,     17, nullptr,                        },  // 0x0065
+    {0,     3,  nullptr,                        },  // 0x0066
+    {0,     37, nullptr,                        },  // 0x0067
+    {0,     46, nullptr,                        },  // 0x0068
+    {0,     VAR,nullptr,                        },  // 0x0069
+    {0,     23, nullptr,                        },  // 0x006a
+    {0,     VAR,nullptr,                        },  // 0x006b
+    {0,     3,  nullptr,                        },  // 0x006c
+    {0,     108,nullptr,                        },  // 0x006d
+    {0,     3,  nullptr,                        },  // 0x006e
+    {0,     2,  nullptr,                        },  // 0x006f
+    {0,     3,  nullptr,                        },  // 0x0070
+    {0,     28, nullptr,                        },  // 0x0071
     {0,     19, clif_parse_WantToConnection,    },  // 0x0072
-    {0,     11, NULL,                           },  // 0x0073
-    {0,     3,  NULL,                           },  // 0x0074
-    {0,     VAR,NULL,                           },  // 0x0075
-    {0,     9,  NULL,                           },  // 0x0076
-    {0,     5,  NULL,                           },  // 0x0077
-    {0,     54, NULL,                           },  // 0x0078
-    {0,     53, NULL,                           },  // 0x0079
-    {0,     58, NULL,                           },  // 0x007a
-    {0,     60, NULL,                           },  // 0x007b
-    {0,     41, NULL,                           },  // 0x007c
+    {0,     11, nullptr,                        },  // 0x0073
+    {0,     3,  nullptr,                        },  // 0x0074
+    {0,     VAR,nullptr,                        },  // 0x0075
+    {0,     9,  nullptr,                        },  // 0x0076
+    {0,     5,  nullptr,                        },  // 0x0077
+    {0,     54, nullptr,                        },  // 0x0078
+    {0,     53, nullptr,                        },  // 0x0079
+    {0,     58, nullptr,                        },  // 0x007a
+    {0,     60, nullptr,                        },  // 0x007b
+    {0,     41, nullptr,                        },  // 0x007c
     {-1,    2,  clif_parse_LoadEndAck,          },  // 0x007d
     {0,     6,  clif_parse_TickSend,            },  // 0x007e
-    {0,     6,  NULL,                           },  // 0x007f
-    {0,     7,  NULL,                           },  // 0x0080
-    {0,     3,  NULL,                           },  // 0x0081
-    {0,     2,  NULL,                           },  // 0x0082
-    {0,     2,  NULL,                           },  // 0x0083
-    {0,     2,  NULL,                           },  // 0x0084
+    {0,     6,  nullptr,                        },  // 0x007f
+    {0,     7,  nullptr,                        },  // 0x0080
+    {0,     3,  nullptr,                        },  // 0x0081
+    {0,     2,  nullptr,                        },  // 0x0082
+    {0,     2,  nullptr,                        },  // 0x0083
+    {0,     2,  nullptr,                        },  // 0x0084
     {-1,    5,  clif_parse_WalkToXY,            },  // 0x0085 Walk code limits this on it's own
-    {0,     16, NULL,                           },  // 0x0086
-    {0,     12, NULL,                           },  // 0x0087
-    {0,     10, NULL,                           },  // 0x0088
+    {0,     16, nullptr,                        },  // 0x0086
+    {0,     12, nullptr,                        },  // 0x0087
+    {0,     10, nullptr,                        },  // 0x0088
     {1000,  7,  clif_parse_ActionRequest,       },  // 0x0089 Special case - see below
-    {0,     29, NULL,                           },  // 0x008a
-    {0,     23, NULL,                           },  // 0x008b unknown... size 2 or 23?
+    {0,     29, nullptr,                        },  // 0x008a
+    {0,     23, nullptr,                        },  // 0x008b unknown... size 2 or 23?
     {300,   VAR,clif_parse_GlobalMessage,       },  // 0x008c
-    {0,     VAR,NULL,                           },  // 0x008d
-    {0,     VAR,NULL,                           },  // 0x008e
-    {0,     0,  NULL,                           },  // 0x008f
+    {0,     VAR,nullptr,                        },  // 0x008d
+    {0,     VAR,nullptr,                        },  // 0x008e
+    {0,     0,  nullptr,                        },  // 0x008f
     {500,   7,  clif_parse_NpcClicked,          },  // 0x0090
-    {0,     22, NULL,                           },  // 0x0091
-    {0,     28, NULL,                           },  // 0x0092
-    {0,     2,  NULL,                           },  // 0x0093
+    {0,     22, nullptr,                        },  // 0x0091
+    {0,     28, nullptr,                        },  // 0x0092
+    {0,     2,  nullptr,                        },  // 0x0093
     {-1,    6,  clif_parse_GetCharNameRequest,  },  // 0x0094
-    {0,     30, NULL,                           },  // 0x0095
+    {0,     30, nullptr,                        },  // 0x0095
     {300,   VAR,clif_parse_Wis,                 },  // 0x0096
-    {0,     VAR,NULL,                           },  // 0x0097
-    {0,     3,  NULL,                           },  // 0x0098
-    {300,   VAR,NULL,                           },  // 0x0099
-    {0,     VAR,NULL,                           },  // 0x009a
+    {0,     VAR,nullptr,                        },  // 0x0097
+    {0,     3,  nullptr,                        },  // 0x0098
+    {300,   VAR,nullptr,                        },  // 0x0099
+    {0,     VAR,nullptr,                        },  // 0x009a
     {-1,    5,  clif_parse_ChangeDir,           },  // 0x009b
-    {0,     9,  NULL,                           },  // 0x009c
-    {0,     17, NULL,                           },  // 0x009d
-    {0,     17, NULL,                           },  // 0x009e
+    {0,     9,  nullptr,                        },  // 0x009c
+    {0,     17, nullptr,                        },  // 0x009d
+    {0,     17, nullptr,                        },  // 0x009e
     {400,   6,  clif_parse_TakeItem,            },  // 0x009f
-    {0,     23, NULL,                           },  // 0x00a0
-    {0,     6,  NULL,                           },  // 0x00a1
+    {0,     23, nullptr,                        },  // 0x00a0
+    {0,     6,  nullptr,                        },  // 0x00a1
     {50,    6,  clif_parse_DropItem,            },  // 0x00a2
-    {0,     VAR,NULL,                           },  // 0x00a3
-    {0,     VAR,NULL,                           },  // 0x00a4
-    {0,     VAR,NULL,                           },  // 0x00a5
-    {0,     VAR,NULL,                           },  // 0x00a6
+    {0,     VAR,nullptr,                        },  // 0x00a3
+    {0,     VAR,nullptr,                        },  // 0x00a4
+    {0,     VAR,nullptr,                        },  // 0x00a5
+    {0,     VAR,nullptr,                        },  // 0x00a6
     {0,     8,  clif_parse_UseItem,             },  // 0x00a7
-    {0,     7,  NULL,                           },  // 0x00a8
+    {0,     7,  nullptr,                        },  // 0x00a8
     {-1,    6,  clif_parse_EquipItem,           },  // 0x00a9 Special case - outfit window (not implemented yet - needs to allow bursts)
-    {0,     7,  NULL,                           },  // 0x00aa
+    {0,     7,  nullptr,                        },  // 0x00aa
     {-1,    4,  clif_parse_UnequipItem,         },  // 0x00ab Special case - outfit window (not implemented yet - needs to allow bursts)
-    {0,     7,  NULL,                           },  // 0x00ac
-    {0,     0,  NULL,                           },  // 0x00ad
-    {0,     VAR,NULL,                           },  // 0x00ae
-    {0,     6,  NULL,                           },  // 0x00af
-    {0,     8,  NULL,                           },  // 0x00b0
-    {0,     8,  NULL,                           },  // 0x00b1
+    {0,     7,  nullptr,                        },  // 0x00ac
+    {0,     0,  nullptr,                        },  // 0x00ad
+    {0,     VAR,nullptr,                        },  // 0x00ae
+    {0,     6,  nullptr,                        },  // 0x00af
+    {0,     8,  nullptr,                        },  // 0x00b0
+    {0,     8,  nullptr,                        },  // 0x00b1
     {0,     3,  clif_parse_Restart,             },  // 0x00b2
-    {0,     3,  NULL,                           },  // 0x00b3
-    {0,     VAR,NULL,                           },  // 0x00b4
-    {0,     6,  NULL,                           },  // 0x00b5
-    {0,     6,  NULL,                           },  // 0x00b6
-    {0,     VAR,NULL,                           },  // 0x00b7
+    {0,     3,  nullptr,                        },  // 0x00b3
+    {0,     VAR,nullptr,                        },  // 0x00b4
+    {0,     6,  nullptr,                        },  // 0x00b5
+    {0,     6,  nullptr,                        },  // 0x00b6
+    {0,     VAR,nullptr,                        },  // 0x00b7
     {0,     7,  clif_parse_NpcSelectMenu,       },  // 0x00b8
     {-1,    6,  clif_parse_NpcNextClicked,      },  // 0x00b9
-    {0,     2,  NULL,                           },  // 0x00ba
+    {0,     2,  nullptr,                        },  // 0x00ba
     {-1,    5,  clif_parse_StatusUp,            },  // 0x00bb People click this very quickly
-    {0,     6,  NULL,                           },  // 0x00bc
-    {0,     44, NULL,                           },  // 0x00bd
-    {0,     5,  NULL,                           },  // 0x00be
+    {0,     6,  nullptr,                        },  // 0x00bc
+    {0,     44, nullptr,                        },  // 0x00bd
+    {0,     5,  nullptr,                        },  // 0x00be
     {1000,  3,  clif_parse_Emotion,             },  // 0x00bf
-    {0,     7,  NULL,                           },  // 0x00c0
+    {0,     7,  nullptr,                        },  // 0x00c0
     {0,     2,  clif_parse_HowManyConnections,  },  // 0x00c1
-    {0,     6,  NULL,                           },  // 0x00c2
-    {0,     8,  NULL,                           },  // 0x00c3
-    {0,     6,  NULL,                           },  // 0x00c4
+    {0,     6,  nullptr,                        },  // 0x00c2
+    {0,     8,  nullptr,                        },  // 0x00c3
+    {0,     6,  nullptr,                        },  // 0x00c4
     {0,     7,  clif_parse_NpcBuySellSelected,  },  // 0x00c5
-    {0,     VAR,NULL,                           },  // 0x00c6
-    {0,     VAR,NULL,                           },  // 0x00c7
+    {0,     VAR,nullptr,                        },  // 0x00c6
+    {0,     VAR,nullptr,                        },  // 0x00c7
     {-1,    VAR,clif_parse_NpcBuyListSend,      },  // 0x00c8
     {-1,    VAR,clif_parse_NpcSellListSend,     },  // 0x00c9 Selling multiple 1-slot items
-    {0,     3,  NULL,                           },  // 0x00ca
-    {0,     3,  NULL,                           },  // 0x00cb
-    {0,     6,  NULL,                           },  // 0x00cc
-    {0,     6,  NULL,                           },  // 0x00cd
-    {0,     2,  NULL,                           },  // 0x00ce
-    {0,     27, NULL,                           },  // 0x00cf
-    {0,     3,  NULL,                           },  // 0x00d0
-    {0,     4,  NULL,                           },  // 0x00d1
-    {0,     4,  NULL,                           },  // 0x00d2
-    {0,     2,  NULL,                           },  // 0x00d3
-    {0,     VAR,NULL,                           },  // 0x00d4
-    {0,     VAR,NULL,                           },  // 0x00d5
-    {0,     3,  NULL,                           },  // 0x00d6
-    {0,     VAR,NULL,                           },  // 0x00d7
-    {0,     6,  NULL,                           },  // 0x00d8
-    {0,     14, NULL,                           },  // 0x00d9
-    {0,     3,  NULL,                           },  // 0x00da
-    {0,     VAR,NULL,                           },  // 0x00db
-    {0,     28, NULL,                           },  // 0x00dc
-    {0,     29, NULL,                           },  // 0x00dd
-    {0,     VAR,NULL,                           },  // 0x00de
-    {0,     VAR,NULL,                           },  // 0x00df
-    {0,     30, NULL,                           },  // 0x00e0
-    {0,     30, NULL,                           },  // 0x00e1
-    {0,     26, NULL,                           },  // 0x00e2
-    {0,     2,  NULL,                           },  // 0x00e3
+    {0,     3,  nullptr,                        },  // 0x00ca
+    {0,     3,  nullptr,                        },  // 0x00cb
+    {0,     6,  nullptr,                        },  // 0x00cc
+    {0,     6,  nullptr,                        },  // 0x00cd
+    {0,     2,  nullptr,                        },  // 0x00ce
+    {0,     27, nullptr,                        },  // 0x00cf
+    {0,     3,  nullptr,                        },  // 0x00d0
+    {0,     4,  nullptr,                        },  // 0x00d1
+    {0,     4,  nullptr,                        },  // 0x00d2
+    {0,     2,  nullptr,                        },  // 0x00d3
+    {0,     VAR,nullptr,                        },  // 0x00d4
+    {0,     VAR,nullptr,                        },  // 0x00d5
+    {0,     3,  nullptr,                        },  // 0x00d6
+    {0,     VAR,nullptr,                        },  // 0x00d7
+    {0,     6,  nullptr,                        },  // 0x00d8
+    {0,     14, nullptr,                        },  // 0x00d9
+    {0,     3,  nullptr,                        },  // 0x00da
+    {0,     VAR,nullptr,                        },  // 0x00db
+    {0,     28, nullptr,                        },  // 0x00dc
+    {0,     29, nullptr,                        },  // 0x00dd
+    {0,     VAR,nullptr,                        },  // 0x00de
+    {0,     VAR,nullptr,                        },  // 0x00df
+    {0,     30, nullptr,                        },  // 0x00e0
+    {0,     30, nullptr,                        },  // 0x00e1
+    {0,     26, nullptr,                        },  // 0x00e2
+    {0,     2,  nullptr,                        },  // 0x00e3
     {2000,  6,  clif_parse_TradeRequest,        },  // 0x00e4
-    {0,     26, NULL,                           },  // 0x00e5
+    {0,     26, nullptr,                        },  // 0x00e5
     {0,     3,  clif_parse_TradeAck,            },  // 0x00e6
-    {0,     3,  NULL,                           },  // 0x00e7
+    {0,     3,  nullptr,                        },  // 0x00e7
     {0,     8,  clif_parse_TradeAddItem,        },  // 0x00e8
-    {0,     19, NULL,                           },  // 0x00e9
-    {0,     5,  NULL,                           },  // 0x00ea
+    {0,     19, nullptr,                        },  // 0x00e9
+    {0,     5,  nullptr,                        },  // 0x00ea
     {0,     2,  clif_parse_TradeOk,             },  // 0x00eb
-    {0,     3,  NULL,                           },  // 0x00ec
+    {0,     3,  nullptr,                        },  // 0x00ec
     {0,     2,  clif_parse_TradeCansel,         },  // 0x00ed
-    {0,     2,  NULL,                           },  // 0x00ee
+    {0,     2,  nullptr,                        },  // 0x00ee
     {0,     2,  clif_parse_TradeCommit,         },  // 0x00ef
-    {0,     3,  NULL,                           },  // 0x00f0
-    {0,     2,  NULL,                           },  // 0x00f1
-    {0,     6,  NULL,                           },  // 0x00f2
+    {0,     3,  nullptr,                        },  // 0x00f0
+    {0,     2,  nullptr,                        },  // 0x00f1
+    {0,     6,  nullptr,                        },  // 0x00f2
     {-1,    8,  clif_parse_MoveToKafra,         },  // 0x00f3
-    {0,     21, NULL,                           },  // 0x00f4
+    {0,     21, nullptr,                        },  // 0x00f4
     {-1,    8,  clif_parse_MoveFromKafra,       },  // 0x00f5
-    {0,     8,  NULL,                           },  // 0x00f6
+    {0,     8,  nullptr,                        },  // 0x00f6
     {0,     2,  clif_parse_CloseKafra,          },  // 0x00f7
-    {0,     2,  NULL,                           },  // 0x00f8
+    {0,     2,  nullptr,                        },  // 0x00f8
     {2000,  26, clif_parse_CreateParty,         },  // 0x00f9
-    {0,     3,  NULL,                           },  // 0x00fa
-    {0,     VAR,NULL,                           },  // 0x00fb
+    {0,     3,  nullptr,                        },  // 0x00fa
+    {0,     VAR,nullptr,                        },  // 0x00fb
     {2000,  6,  clif_parse_PartyInvite,         },  // 0x00fc
-    {0,     27, NULL,                           },  // 0x00fd
-    {0,     30, NULL,                           },  // 0x00fe
+    {0,     27, nullptr,                        },  // 0x00fd
+    {0,     30, nullptr,                        },  // 0x00fe
     {0,     10, clif_parse_ReplyPartyInvite,    },  // 0x00ff
     {0,     2,  clif_parse_LeaveParty,          },  // 0x0100
-    {0,     6,  NULL,                           },  // 0x0101
+    {0,     6,  nullptr,                        },  // 0x0101
     {0,     6,  clif_parse_PartyChangeOption,   },  // 0x0102
     {0,     30, clif_parse_RemovePartyMember,   },  // 0x0103
-    {0,     79, NULL,                           },  // 0x0104
-    {0,     31, NULL,                           },  // 0x0105
-    {0,     10, NULL,                           },  // 0x0106
-    {0,     10, NULL,                           },  // 0x0107
+    {0,     79, nullptr,                        },  // 0x0104
+    {0,     31, nullptr,                        },  // 0x0105
+    {0,     10, nullptr,                        },  // 0x0106
+    {0,     10, nullptr,                        },  // 0x0107
     {300,   VAR,clif_parse_PartyMessage,        },  // 0x0108
-    {0,     VAR,NULL,                           },  // 0x0109
-    {0,     4,  NULL,                           },  // 0x010a
-    {0,     6,  NULL,                           },  // 0x010b
-    {0,     6,  NULL,                           },  // 0x010c
-    {0,     2,  NULL,                           },  // 0x010d
-    {0,     11, NULL,                           },  // 0x010e
-    {0,     VAR,NULL,                           },  // 0x010f
-    {0,     10, NULL,                           },  // 0x0110
-    {0,     39, NULL,                           },  // 0x0111
+    {0,     VAR,nullptr,                        },  // 0x0109
+    {0,     4,  nullptr,                        },  // 0x010a
+    {0,     6,  nullptr,                        },  // 0x010b
+    {0,     6,  nullptr,                        },  // 0x010c
+    {0,     2,  nullptr,                        },  // 0x010d
+    {0,     11, nullptr,                        },  // 0x010e
+    {0,     VAR,nullptr,                        },  // 0x010f
+    {0,     10, nullptr,                        },  // 0x0110
+    {0,     39, nullptr,                        },  // 0x0111
     {-1,    4,  clif_parse_SkillUp,             },  // 0x0112
-    {0,     10, NULL,                           },  // 0x0113
-    {0,     31, NULL,                           },  // 0x0114
-    {0,     35, NULL,                           },  // 0x0115
-    {0,     10, NULL,                           },  // 0x0116
-    {0,     18, NULL,                           },  // 0x0117
+    {0,     10, nullptr,                        },  // 0x0113
+    {0,     31, nullptr,                        },  // 0x0114
+    {0,     35, nullptr,                        },  // 0x0115
+    {0,     10, nullptr,                        },  // 0x0116
+    {0,     18, nullptr,                        },  // 0x0117
     {0,     2,  clif_parse_StopAttack,          },  // 0x0118
-    {0,     13, NULL,                           },  // 0x0119
-    {0,     15, NULL,                           },  // 0x011a
-    {0,     20, NULL,                           },  // 0x011b
-    {0,     68, NULL,                           },  // 0x011c
-    {0,     2,  NULL,                           },  // 0x011d
-    {0,     3,  NULL,                           },  // 0x011e
-    {0,     16, NULL,                           },  // 0x011f
-    {0,     6,  NULL,                           },  // 0x0120
-    {0,     14, NULL,                           },  // 0x0121
-    {0,     VAR,NULL,                           },  // 0x0122
-    {0,     VAR,NULL,                           },  // 0x0123
-    {0,     21, NULL,                           },  // 0x0124
-    {0,     8,  NULL,                           },  // 0x0125
-    {0,     8,  NULL,                           },  // 0x0126
-    {0,     8,  NULL,                           },  // 0x0127
-    {0,     8,  NULL,                           },  // 0x0128
-    {0,     8,  NULL,                           },  // 0x0129
-    {0,     2,  NULL,                           },  // 0x012a
-    {0,     2,  NULL,                           },  // 0x012b
-    {0,     3,  NULL,                           },  // 0x012c
-    {0,     4,  NULL,                           },  // 0x012d
-    {0,     2,  NULL,                           },  // 0x012e
-    {0,     VAR,NULL,                           },  // 0x012f
-    {0,     6,  NULL,                           },  // 0x0130
-    {0,     86, NULL,                           },  // 0x0131
-    {0,     6,  NULL,                           },  // 0x0132
-    {0,     VAR,NULL,                           },  // 0x0133
-    {0,     VAR,NULL,                           },  // 0x0134
-    {0,     7,  NULL,                           },  // 0x0135
-    {0,     VAR,NULL,                           },  // 0x0136
-    {0,     6,  NULL,                           },  // 0x0137
-    {0,     3,  NULL,                           },  // 0x0138
-    {0,     16, NULL,                           },  // 0x0139
-    {0,     4,  NULL,                           },  // 0x013a
-    {0,     4,  NULL,                           },  // 0x013b
-    {0,     4,  NULL,                           },  // 0x013c
-    {0,     6,  NULL,                           },  // 0x013d
-    {0,     24, NULL,                           },  // 0x013e
-    {0,     26, NULL,                           },  // 0x013f
-    {0,     22, NULL,                           },  // 0x0140
-    {0,     14, NULL,                           },  // 0x0141
-    {0,     6,  NULL,                           },  // 0x0142
+    {0,     13, nullptr,                        },  // 0x0119
+    {0,     15, nullptr,                        },  // 0x011a
+    {0,     20, nullptr,                        },  // 0x011b
+    {0,     68, nullptr,                        },  // 0x011c
+    {0,     2,  nullptr,                        },  // 0x011d
+    {0,     3,  nullptr,                        },  // 0x011e
+    {0,     16, nullptr,                        },  // 0x011f
+    {0,     6,  nullptr,                        },  // 0x0120
+    {0,     14, nullptr,                        },  // 0x0121
+    {0,     VAR,nullptr,                        },  // 0x0122
+    {0,     VAR,nullptr,                        },  // 0x0123
+    {0,     21, nullptr,                        },  // 0x0124
+    {0,     8,  nullptr,                        },  // 0x0125
+    {0,     8,  nullptr,                        },  // 0x0126
+    {0,     8,  nullptr,                        },  // 0x0127
+    {0,     8,  nullptr,                        },  // 0x0128
+    {0,     8,  nullptr,                        },  // 0x0129
+    {0,     2,  nullptr,                        },  // 0x012a
+    {0,     2,  nullptr,                        },  // 0x012b
+    {0,     3,  nullptr,                        },  // 0x012c
+    {0,     4,  nullptr,                        },  // 0x012d
+    {0,     2,  nullptr,                        },  // 0x012e
+    {0,     VAR,nullptr,                        },  // 0x012f
+    {0,     6,  nullptr,                        },  // 0x0130
+    {0,     86, nullptr,                        },  // 0x0131
+    {0,     6,  nullptr,                        },  // 0x0132
+    {0,     VAR,nullptr,                        },  // 0x0133
+    {0,     VAR,nullptr,                        },  // 0x0134
+    {0,     7,  nullptr,                        },  // 0x0135
+    {0,     VAR,nullptr,                        },  // 0x0136
+    {0,     6,  nullptr,                        },  // 0x0137
+    {0,     3,  nullptr,                        },  // 0x0138
+    {0,     16, nullptr,                        },  // 0x0139
+    {0,     4,  nullptr,                        },  // 0x013a
+    {0,     4,  nullptr,                        },  // 0x013b
+    {0,     4,  nullptr,                        },  // 0x013c
+    {0,     6,  nullptr,                        },  // 0x013d
+    {0,     24, nullptr,                        },  // 0x013e
+    {0,     26, nullptr,                        },  // 0x013f
+    {0,     22, nullptr,                        },  // 0x0140
+    {0,     14, nullptr,                        },  // 0x0141
+    {0,     6,  nullptr,                        },  // 0x0142
     {300,   10, clif_parse_NpcAmountInput,      },  // 0x0143
-    {0,     23, NULL,                           },  // 0x0144
-    {0,     19, NULL,                           },  // 0x0145
+    {0,     23, nullptr,                        },  // 0x0144
+    {0,     19, nullptr,                        },  // 0x0145
     {300,   6,  clif_parse_NpcCloseClicked,     },  // 0x0146
-    {0,     39, NULL,                           },  // 0x0147
-    {0,     8,  NULL,                           },  // 0x0148
-    {0,     9,  NULL,                           },  // 0x0149
-    {0,     6,  NULL,                           },  // 0x014a
-    {0,     27, NULL,                           },  // 0x014b
-    {0,     VAR,NULL,                           },  // 0x014c
-    {0,     2,  NULL,                           },  // 0x014d
-    {0,     6,  NULL,                           },  // 0x014e
-    {0,     6,  NULL,                           },  // 0x014f
-    {0,     110,NULL,                           },  // 0x0150
-    {0,     6,  NULL,                           },  // 0x0151
-    {0,     VAR,NULL,                           },  // 0x0152
-    {0,     VAR,NULL,                           },  // 0x0153
-    {0,     VAR,NULL,                           },  // 0x0154
-    {0,     VAR,NULL,                           },  // 0x0155
-    {0,     VAR,NULL,                           },  // 0x0156
-    {0,     6,  NULL,                           },  // 0x0157
-    {0,     VAR,NULL,                           },  // 0x0158
-    {0,     54, NULL,                           },  // 0x0159
-    {0,     66, NULL,                           },  // 0x015a
-    {0,     54, NULL,                           },  // 0x015b
-    {0,     90, NULL,                           },  // 0x015c
-    {0,     42, NULL,                           },  // 0x015d
-    {0,     6,  NULL,                           },  // 0x015e
-    {0,     42, NULL,                           },  // 0x015f
-    {0,     VAR,NULL,                           },  // 0x0160
-    {0,     VAR,NULL,                           },  // 0x0161
-    {0,     VAR,NULL,                           },  // 0x0162
-    {0,     VAR,NULL,                           },  // 0x0163
-    {0,     VAR,NULL,                           },  // 0x0164
-    {0,     30, NULL,                           },  // 0x0165
-    {0,     VAR,NULL,                           },  // 0x0166
-    {0,     3,  NULL,                           },  // 0x0167
-    {0,     14, NULL,                           },  // 0x0168
-    {0,     3,  NULL,                           },  // 0x0169
-    {0,     30, NULL,                           },  // 0x016a
-    {0,     10, NULL,                           },  // 0x016b
-    {0,     43, NULL,                           },  // 0x016c
-    {0,     14, NULL,                           },  // 0x016d
-    {0,     186,NULL,                           },  // 0x016e
-    {0,     182,NULL,                           },  // 0x016f
-    {0,     14, NULL,                           },  // 0x0170
-    {0,     30, NULL,                           },  // 0x0171
-    {0,     10, NULL,                           },  // 0x0172
-    {0,     3,  NULL,                           },  // 0x0173
-    {0,     VAR,NULL,                           },  // 0x0174
-    {0,     6,  NULL,                           },  // 0x0175
-    {0,     106,NULL,                           },  // 0x0176
-    {0,     VAR,NULL,                           },  // 0x0177
-    {0,     4,  NULL,                           },  // 0x0178
-    {0,     5,  NULL,                           },  // 0x0179
-    {0,     4,  NULL,                           },  // 0x017a
-    {0,     VAR,NULL,                           },  // 0x017b
-    {0,     6,  NULL,                           },  // 0x017c
-    {0,     7,  NULL,                           },  // 0x017d
-    {0,     VAR,NULL,                           },  // 0x017e
-    {0,     VAR,NULL,                           },  // 0x017f
-    {0,     6,  NULL,                           },  // 0x0180
-    {0,     3,  NULL,                           },  // 0x0181
-    {0,     106,NULL,                           },  // 0x0182
-    {0,     10, NULL,                           },  // 0x0183
-    {0,     10, NULL,                           },  // 0x0184
-    {0,     34, NULL,                           },  // 0x0185
-    {0,     0,  NULL,                           },  // 0x0186
-    {0,     6,  NULL,                           },  // 0x0187
-    {0,     8,  NULL,                           },  // 0x0188
-    {0,     4,  NULL,                           },  // 0x0189
+    {0,     39, nullptr,                        },  // 0x0147
+    {0,     8,  nullptr,                        },  // 0x0148
+    {0,     9,  nullptr,                        },  // 0x0149
+    {0,     6,  nullptr,                        },  // 0x014a
+    {0,     27, nullptr,                        },  // 0x014b
+    {0,     VAR,nullptr,                        },  // 0x014c
+    {0,     2,  nullptr,                        },  // 0x014d
+    {0,     6,  nullptr,                        },  // 0x014e
+    {0,     6,  nullptr,                        },  // 0x014f
+    {0,     110,nullptr,                        },  // 0x0150
+    {0,     6,  nullptr,                        },  // 0x0151
+    {0,     VAR,nullptr,                        },  // 0x0152
+    {0,     VAR,nullptr,                        },  // 0x0153
+    {0,     VAR,nullptr,                        },  // 0x0154
+    {0,     VAR,nullptr,                        },  // 0x0155
+    {0,     VAR,nullptr,                        },  // 0x0156
+    {0,     6,  nullptr,                        },  // 0x0157
+    {0,     VAR,nullptr,                        },  // 0x0158
+    {0,     54, nullptr,                        },  // 0x0159
+    {0,     66, nullptr,                        },  // 0x015a
+    {0,     54, nullptr,                        },  // 0x015b
+    {0,     90, nullptr,                        },  // 0x015c
+    {0,     42, nullptr,                        },  // 0x015d
+    {0,     6,  nullptr,                        },  // 0x015e
+    {0,     42, nullptr,                        },  // 0x015f
+    {0,     VAR,nullptr,                        },  // 0x0160
+    {0,     VAR,nullptr,                        },  // 0x0161
+    {0,     VAR,nullptr,                        },  // 0x0162
+    {0,     VAR,nullptr,                        },  // 0x0163
+    {0,     VAR,nullptr,                        },  // 0x0164
+    {0,     30, nullptr,                        },  // 0x0165
+    {0,     VAR,nullptr,                        },  // 0x0166
+    {0,     3,  nullptr,                        },  // 0x0167
+    {0,     14, nullptr,                        },  // 0x0168
+    {0,     3,  nullptr,                        },  // 0x0169
+    {0,     30, nullptr,                        },  // 0x016a
+    {0,     10, nullptr,                        },  // 0x016b
+    {0,     43, nullptr,                        },  // 0x016c
+    {0,     14, nullptr,                        },  // 0x016d
+    {0,     186,nullptr,                        },  // 0x016e
+    {0,     182,nullptr,                        },  // 0x016f
+    {0,     14, nullptr,                        },  // 0x0170
+    {0,     30, nullptr,                        },  // 0x0171
+    {0,     10, nullptr,                        },  // 0x0172
+    {0,     3,  nullptr,                        },  // 0x0173
+    {0,     VAR,nullptr,                        },  // 0x0174
+    {0,     6,  nullptr,                        },  // 0x0175
+    {0,     106,nullptr,                        },  // 0x0176
+    {0,     VAR,nullptr,                        },  // 0x0177
+    {0,     4,  nullptr,                        },  // 0x0178
+    {0,     5,  nullptr,                        },  // 0x0179
+    {0,     4,  nullptr,                        },  // 0x017a
+    {0,     VAR,nullptr,                        },  // 0x017b
+    {0,     6,  nullptr,                        },  // 0x017c
+    {0,     7,  nullptr,                        },  // 0x017d
+    {0,     VAR,nullptr,                        },  // 0x017e
+    {0,     VAR,nullptr,                        },  // 0x017f
+    {0,     6,  nullptr,                        },  // 0x0180
+    {0,     3,  nullptr,                        },  // 0x0181
+    {0,     106,nullptr,                        },  // 0x0182
+    {0,     10, nullptr,                        },  // 0x0183
+    {0,     10, nullptr,                        },  // 0x0184
+    {0,     34, nullptr,                        },  // 0x0185
+    {0,     0,  nullptr,                        },  // 0x0186
+    {0,     6,  nullptr,                        },  // 0x0187
+    {0,     8,  nullptr,                        },  // 0x0188
+    {0,     4,  nullptr,                        },  // 0x0189
     {0,     4,  clif_parse_QuitGame,            },  // 0x018a
-    {0,     4,  NULL,                           },  // 0x018b
-    {0,     29, NULL,                           },  // 0x018c
-    {0,     VAR,NULL,                           },  // 0x018d
-    {0,     10, NULL,                           },  // 0x018e
-    {0,     6,  NULL,                           },  // 0x018f
-    {0,     90, NULL,                           },  // 0x0190
-    {0,     86, NULL,                           },  // 0x0191
-    {0,     24, NULL,                           },  // 0x0192
-    {0,     6,  NULL,                           },  // 0x0193
-    {0,     30, NULL,                           },  // 0x0194
-    {0,     102,NULL,                           },  // 0x0195
-    {0,     9,  NULL,                           },  // 0x0196
-    {0,     4,  NULL,                           },  // 0x0197
-    {0,     8,  NULL,                           },  // 0x0198
-    {0,     4,  NULL,                           },  // 0x0199
-    {0,     14, NULL,                           },  // 0x019a
-    {0,     10, NULL,                           },  // 0x019b
-    {0,     VAR,NULL,                           },  // 0x019c
-    {300,   6,  NULL,                           },  // 0x019d
-    {0,     2,  NULL,                           },  // 0x019e
-    {0,     6,  NULL,                           },  // 0x019f
-    {0,     3,  NULL,                           },  // 0x01a0
-    {0,     3,  NULL,                           },  // 0x01a1
-    {0,     35, NULL,                           },  // 0x01a2
-    {0,     5,  NULL,                           },  // 0x01a3
-    {0,     11, NULL,                           },  // 0x01a4
-    {0,     26, NULL,                           },  // 0x01a5
-    {0,     VAR,NULL,                           },  // 0x01a6
-    {0,     4,  NULL,                           },  // 0x01a7
-    {0,     4,  NULL,                           },  // 0x01a8
-    {0,     6,  NULL,                           },  // 0x01a9
-    {0,     10, NULL,                           },  // 0x01aa
-    {0,     12, NULL,                           },  // 0x01ab
-    {0,     6,  NULL,                           },  // 0x01ac
-    {0,     VAR,NULL,                           },  // 0x01ad
-    {0,     4,  NULL,                           },  // 0x01ae
-    {0,     4,  NULL,                           },  // 0x01af
-    {0,     11, NULL,                           },  // 0x01b0
-    {0,     7,  NULL,                           },  // 0x01b1
-    {0,     VAR,NULL,                           },  // 0x01b2
-    {0,     67, NULL,                           },  // 0x01b3
-    {0,     12, NULL,                           },  // 0x01b4
-    {0,     18, NULL,                           },  // 0x01b5
-    {0,     114,NULL,                           },  // 0x01b6
-    {0,     6,  NULL,                           },  // 0x01b7
-    {0,     3,  NULL,                           },  // 0x01b8
-    {0,     6,  NULL,                           },  // 0x01b9
-    {0,     26, NULL,                           },  // 0x01ba
-    {0,     26, NULL,                           },  // 0x01bb
-    {0,     26, NULL,                           },  // 0x01bc
-    {0,     26, NULL,                           },  // 0x01bd
-    {0,     2,  NULL,                           },  // 0x01be
-    {0,     3,  NULL,                           },  // 0x01bf
-    {0,     2,  NULL,                           },  // 0x01c0
-    {0,     14, NULL,                           },  // 0x01c1
-    {0,     10, NULL,                           },  // 0x01c2
-    {0,     VAR,NULL,                           },  // 0x01c3
-    {0,     22, NULL,                           },  // 0x01c4
-    {0,     22, NULL,                           },  // 0x01c5
-    {0,     4,  NULL,                           },  // 0x01c6
-    {0,     2,  NULL,                           },  // 0x01c7
-    {0,     13, NULL,                           },  // 0x01c8
-    {0,     97, NULL,                           },  // 0x01c9
-    {0,     0,  NULL,                           },  // 0x01ca
-    {0,     9,  NULL,                           },  // 0x01cb
-    {0,     9,  NULL,                           },  // 0x01cc
-    {0,     30, NULL,                           },  // 0x01cd
-    {0,     6,  NULL,                           },  // 0x01ce
-    {0,     28, NULL,                           },  // 0x01cf
-    {0,     8,  NULL,                           },  // 0x01d0
-    {0,     14, NULL,                           },  // 0x01d1
-    {0,     10, NULL,                           },  // 0x01d2
-    {0,     35, NULL,                           },  // 0x01d3
-    {0,     6,  NULL,                           },  // 0x01d4
+    {0,     4,  nullptr,                        },  // 0x018b
+    {0,     29, nullptr,                        },  // 0x018c
+    {0,     VAR,nullptr,                        },  // 0x018d
+    {0,     10, nullptr,                        },  // 0x018e
+    {0,     6,  nullptr,                        },  // 0x018f
+    {0,     90, nullptr,                        },  // 0x0190
+    {0,     86, nullptr,                        },  // 0x0191
+    {0,     24, nullptr,                        },  // 0x0192
+    {0,     6,  nullptr,                        },  // 0x0193
+    {0,     30, nullptr,                        },  // 0x0194
+    {0,     102,nullptr,                        },  // 0x0195
+    {0,     9,  nullptr,                        },  // 0x0196
+    {0,     4,  nullptr,                        },  // 0x0197
+    {0,     8,  nullptr,                        },  // 0x0198
+    {0,     4,  nullptr,                        },  // 0x0199
+    {0,     14, nullptr,                        },  // 0x019a
+    {0,     10, nullptr,                        },  // 0x019b
+    {0,     VAR,nullptr,                        },  // 0x019c
+    {300,   6,  nullptr,                        },  // 0x019d
+    {0,     2,  nullptr,                        },  // 0x019e
+    {0,     6,  nullptr,                        },  // 0x019f
+    {0,     3,  nullptr,                        },  // 0x01a0
+    {0,     3,  nullptr,                        },  // 0x01a1
+    {0,     35, nullptr,                        },  // 0x01a2
+    {0,     5,  nullptr,                        },  // 0x01a3
+    {0,     11, nullptr,                        },  // 0x01a4
+    {0,     26, nullptr,                        },  // 0x01a5
+    {0,     VAR,nullptr,                        },  // 0x01a6
+    {0,     4,  nullptr,                        },  // 0x01a7
+    {0,     4,  nullptr,                        },  // 0x01a8
+    {0,     6,  nullptr,                        },  // 0x01a9
+    {0,     10, nullptr,                        },  // 0x01aa
+    {0,     12, nullptr,                        },  // 0x01ab
+    {0,     6,  nullptr,                        },  // 0x01ac
+    {0,     VAR,nullptr,                        },  // 0x01ad
+    {0,     4,  nullptr,                        },  // 0x01ae
+    {0,     4,  nullptr,                        },  // 0x01af
+    {0,     11, nullptr,                        },  // 0x01b0
+    {0,     7,  nullptr,                        },  // 0x01b1
+    {0,     VAR,nullptr,                        },  // 0x01b2
+    {0,     67, nullptr,                        },  // 0x01b3
+    {0,     12, nullptr,                        },  // 0x01b4
+    {0,     18, nullptr,                        },  // 0x01b5
+    {0,     114,nullptr,                        },  // 0x01b6
+    {0,     6,  nullptr,                        },  // 0x01b7
+    {0,     3,  nullptr,                        },  // 0x01b8
+    {0,     6,  nullptr,                        },  // 0x01b9
+    {0,     26, nullptr,                        },  // 0x01ba
+    {0,     26, nullptr,                        },  // 0x01bb
+    {0,     26, nullptr,                        },  // 0x01bc
+    {0,     26, nullptr,                        },  // 0x01bd
+    {0,     2,  nullptr,                        },  // 0x01be
+    {0,     3,  nullptr,                        },  // 0x01bf
+    {0,     2,  nullptr,                        },  // 0x01c0
+    {0,     14, nullptr,                        },  // 0x01c1
+    {0,     10, nullptr,                        },  // 0x01c2
+    {0,     VAR,nullptr,                        },  // 0x01c3
+    {0,     22, nullptr,                        },  // 0x01c4
+    {0,     22, nullptr,                        },  // 0x01c5
+    {0,     4,  nullptr,                        },  // 0x01c6
+    {0,     2,  nullptr,                        },  // 0x01c7
+    {0,     13, nullptr,                        },  // 0x01c8
+    {0,     97, nullptr,                        },  // 0x01c9
+    {0,     0,  nullptr,                        },  // 0x01ca
+    {0,     9,  nullptr,                        },  // 0x01cb
+    {0,     9,  nullptr,                        },  // 0x01cc
+    {0,     30, nullptr,                        },  // 0x01cd
+    {0,     6,  nullptr,                        },  // 0x01ce
+    {0,     28, nullptr,                        },  // 0x01cf
+    {0,     8,  nullptr,                        },  // 0x01d0
+    {0,     14, nullptr,                        },  // 0x01d1
+    {0,     10, nullptr,                        },  // 0x01d2
+    {0,     35, nullptr,                        },  // 0x01d3
+    {0,     6,  nullptr,                        },  // 0x01d4
     {300,   VAR,clif_parse_NpcStringInput,      },  // 0x01d5 - set to -1
-    {0,     4,  NULL,                           },  // 0x01d6
-    {0,     11, NULL,                           },  // 0x01d7
-    {0,     54, NULL,                           },  // 0x01d8
-    {0,     53, NULL,                           },  // 0x01d9
-    {0,     60, NULL,                           },  // 0x01da
-    {0,     2,  NULL,                           },  // 0x01db
-    {0,     VAR,NULL,                           },  // 0x01dc
-    {0,     47, NULL,                           },  // 0x01dd
-    {0,     33, NULL,                           },  // 0x01de
-    {0,     6,  NULL,                           },  // 0x01df
-    {0,     30, NULL,                           },  // 0x01e0
-    {0,     8,  NULL,                           },  // 0x01e1
-    {0,     34, NULL,                           },  // 0x01e2
-    {0,     14, NULL,                           },  // 0x01e3
-    {0,     2,  NULL,                           },  // 0x01e4
-    {0,     6,  NULL,                           },  // 0x01e5
-    {0,     26, NULL,                           },  // 0x01e6
-    {0,     2,  NULL,                           },  // 0x01e7
-    {0,     28, NULL,                           },  // 0x01e8
-    {0,     81, NULL,                           },  // 0x01e9
-    {0,     6,  NULL,                           },  // 0x01ea
-    {0,     10, NULL,                           },  // 0x01eb
-    {0,     26, NULL,                           },  // 0x01ec
-    {0,     2,  NULL,                           },  // 0x01ed
-    {0,     VAR,NULL,                           },  // 0x01ee
-    {0,     VAR,NULL,                           },  // 0x01ef
-    {0,     VAR,NULL,                           },  // 0x01f0
-    {0,     VAR,NULL,                           },  // 0x01f1
-    {0,     20, NULL,                           },  // 0x01f2
-    {0,     10, NULL,                           },  // 0x01f3
-    {0,     32, NULL,                           },  // 0x01f4
-    {0,     9,  NULL,                           },  // 0x01f5
-    {0,     34, NULL,                           },  // 0x01f6
-    {0,     14, NULL,                           },  // 0x01f7
-    {0,     2,  NULL,                           },  // 0x01f8
-    {0,     6,  NULL,                           },  // 0x01f9
-    {0,     48, NULL,                           },  // 0x01fa
-    {0,     56, NULL,                           },  // 0x01fb
-    {0,     VAR,NULL,                           },  // 0x01fc
-    {0,     4,  NULL,                           },  // 0x01fd
-    {0,     5,  NULL,                           },  // 0x01fe
-    {0,     10, NULL,                           },  // 0x01ff
-    {0,     26, NULL,                           },  // 0x0200
-    {0,     VAR,NULL,                           },  // 0x0201
-    {0,     26, NULL,                           },  // 0x0202
-    {0,     10, NULL,                           },  // 0x0203
-    {0,     18, NULL,                           },  // 0x0204
-    {0,     26, NULL,                           },  // 0x0205
-    {0,     11, NULL,                           },  // 0x0206
-    {0,     34, NULL,                           },  // 0x0207
-    {0,     14, NULL,                           },  // 0x0208
-    {0,     36, NULL,                           },  // 0x0209
-    {0,     10, NULL,                           },  // 0x020a
-    {0,     19, NULL,                           },  // 0x020b
-    {0,     10, NULL,                           },  // 0x020c
-    {0,     VAR,NULL,                           },  // 0x020d
-    {0,     24, NULL,                           },  // 0x020e
-    {0,     0,  NULL,                           },  // 0x020f
-    {0,     0,  NULL,                           },  // 0x0210
-    {0,     0,  NULL,                           },  // 0x0211
-    {0,     0,  NULL,                           },  // 0x0212
-    {0,     0,  NULL,                           },  // 0x0213
-    {0,     0,  NULL,                           },  // 0x0214
-    {0,     0,  NULL,                           },  // 0x0215
-    {0,     0,  NULL,                           },  // 0x0216
-    {0,     0,  NULL,                           },  // 0x0217
-    {0,     0,  NULL,                           },  // 0x0218
-    {0,     0,  NULL,                           },  // 0x0219
-    {0,     0,  NULL,                           },  // 0x021a
-    {0,     0,  NULL,                           },  // 0x021b
-    {0,     0,  NULL,                           },  // 0x021c
-    {0,     0,  NULL,                           },  // 0x021d
-    {0,     0,  NULL,                           },  // 0x021e
-    {0,     0,  NULL,                           },  // 0x021f
+    {0,     4,  nullptr,                        },  // 0x01d6
+    {0,     11, nullptr,                        },  // 0x01d7
+    {0,     54, nullptr,                        },  // 0x01d8
+    {0,     53, nullptr,                        },  // 0x01d9
+    {0,     60, nullptr,                        },  // 0x01da
+    {0,     2,  nullptr,                        },  // 0x01db
+    {0,     VAR,nullptr,                        },  // 0x01dc
+    {0,     47, nullptr,                        },  // 0x01dd
+    {0,     33, nullptr,                        },  // 0x01de
+    {0,     6,  nullptr,                        },  // 0x01df
+    {0,     30, nullptr,                        },  // 0x01e0
+    {0,     8,  nullptr,                        },  // 0x01e1
+    {0,     34, nullptr,                        },  // 0x01e2
+    {0,     14, nullptr,                        },  // 0x01e3
+    {0,     2,  nullptr,                        },  // 0x01e4
+    {0,     6,  nullptr,                        },  // 0x01e5
+    {0,     26, nullptr,                        },  // 0x01e6
+    {0,     2,  nullptr,                        },  // 0x01e7
+    {0,     28, nullptr,                        },  // 0x01e8
+    {0,     81, nullptr,                        },  // 0x01e9
+    {0,     6,  nullptr,                        },  // 0x01ea
+    {0,     10, nullptr,                        },  // 0x01eb
+    {0,     26, nullptr,                        },  // 0x01ec
+    {0,     2,  nullptr,                        },  // 0x01ed
+    {0,     VAR,nullptr,                        },  // 0x01ee
+    {0,     VAR,nullptr,                        },  // 0x01ef
+    {0,     VAR,nullptr,                        },  // 0x01f0
+    {0,     VAR,nullptr,                        },  // 0x01f1
+    {0,     20, nullptr,                        },  // 0x01f2
+    {0,     10, nullptr,                        },  // 0x01f3
+    {0,     32, nullptr,                        },  // 0x01f4
+    {0,     9,  nullptr,                        },  // 0x01f5
+    {0,     34, nullptr,                        },  // 0x01f6
+    {0,     14, nullptr,                        },  // 0x01f7
+    {0,     2,  nullptr,                        },  // 0x01f8
+    {0,     6,  nullptr,                        },  // 0x01f9
+    {0,     48, nullptr,                        },  // 0x01fa
+    {0,     56, nullptr,                        },  // 0x01fb
+    {0,     VAR,nullptr,                        },  // 0x01fc
+    {0,     4,  nullptr,                        },  // 0x01fd
+    {0,     5,  nullptr,                        },  // 0x01fe
+    {0,     10, nullptr,                        },  // 0x01ff
+    {0,     26, nullptr,                        },  // 0x0200
+    {0,     VAR,nullptr,                        },  // 0x0201
+    {0,     26, nullptr,                        },  // 0x0202
+    {0,     10, nullptr,                        },  // 0x0203
+    {0,     18, nullptr,                        },  // 0x0204
+    {0,     26, nullptr,                        },  // 0x0205
+    {0,     11, nullptr,                        },  // 0x0206
+    {0,     34, nullptr,                        },  // 0x0207
+    {0,     14, nullptr,                        },  // 0x0208
+    {0,     36, nullptr,                        },  // 0x0209
+    {0,     10, nullptr,                        },  // 0x020a
+    {0,     19, nullptr,                        },  // 0x020b
+    {0,     10, nullptr,                        },  // 0x020c
+    {0,     VAR,nullptr,                        },  // 0x020d
+    {0,     24, nullptr,                        },  // 0x020e
+    {0,     0,  nullptr,                        },  // 0x020f
+    {0,     0,  nullptr,                        },  // 0x0210
+    {0,     0,  nullptr,                        },  // 0x0211
+    {0,     0,  nullptr,                        },  // 0x0212
+    {0,     0,  nullptr,                        },  // 0x0213
+    {0,     0,  nullptr,                        },  // 0x0214
+    {0,     0,  nullptr,                        },  // 0x0215
+    {0,     0,  nullptr,                        },  // 0x0216
+    {0,     0,  nullptr,                        },  // 0x0217
+    {0,     0,  nullptr,                        },  // 0x0218
+    {0,     0,  nullptr,                        },  // 0x0219
+    {0,     0,  nullptr,                        },  // 0x021a
+    {0,     0,  nullptr,                        },  // 0x021b
+    {0,     0,  nullptr,                        },  // 0x021c
+    {0,     0,  nullptr,                        },  // 0x021d
+    {0,     0,  nullptr,                        },  // 0x021e
+    {0,     0,  nullptr,                        },  // 0x021f
 };
 
 // Checks for packet flooding
diff --git a/src/map/clif.t.hpp b/src/map/clif.t.hpp
index ba9a187..0a3737a 100644
--- a/src/map/clif.t.hpp
+++ b/src/map/clif.t.hpp
@@ -600,7 +600,7 @@ struct IOff0
     static IOff0 from(uint16_t i)
     { return IOff0{i}; }
     static IteratorPair<ValueIterator<IOff0>> iter()
-    { return {IOff0::from(0), IOff0::from(MAX_INVENTORY)}; };
+    { return {IOff0::from(0), IOff0::from(MAX_INVENTORY)}; }
     friend uint16_t convert_for_printf(IOff0 i0) { return i0.index; }
 
     IOff0& operator ++() { ++index; return *this; }
@@ -624,7 +624,7 @@ struct SOff0
     static SOff0 from(uint16_t i)
     { return SOff0{i}; }
     static IteratorPair<ValueIterator<SOff0>> iter()
-    { return {SOff0::from(0), SOff0::from(MAX_STORAGE)}; };
+    { return {SOff0::from(0), SOff0::from(MAX_STORAGE)}; }
     friend uint16_t convert_for_printf(SOff0 s0) { return s0.index; }
 
     SOff0& operator ++() { ++index; return *this; }
@@ -648,7 +648,7 @@ struct IOff2
     static IOff2 from(uint16_t i)
     { return IOff2{static_cast<uint16_t>(i + 2)}; }
     static IteratorPair<ValueIterator<IOff2>> iter()
-    { return {IOff2::from(0), IOff2::from(MAX_INVENTORY)}; };
+    { return {IOff2::from(0), IOff2::from(MAX_INVENTORY)}; }
 
     IOff2& operator ++() { ++index; return *this; }
     friend bool operator == (IOff2 l, IOff2 r) { return l.index == r.index; }
@@ -672,7 +672,7 @@ struct SOff1
     static SOff1 from(uint16_t i)
     { return SOff1{static_cast<uint16_t>(i + 1)}; }
     static IteratorPair<ValueIterator<SOff1>> iter()
-    { return {SOff1::from(0), SOff1::from(MAX_STORAGE)}; };
+    { return {SOff1::from(0), SOff1::from(MAX_STORAGE)}; }
 
     SOff1& operator ++() { ++index; return *this; }
     friend bool operator == (SOff1 l, SOff1 r) { return l.index == r.index; }
diff --git a/src/map/intif.cpp b/src/map/intif.cpp
index 543ec0b..4dbd5f7 100644
--- a/src/map/intif.cpp
+++ b/src/map/intif.cpp
@@ -202,7 +202,7 @@ void intif_party_addmember(PartyId party_id, AccountId account_id)
 
     dumb_ptr<map_session_data> sd;
     sd = map_id2sd(account_to_block(account_id));
-    if (sd != NULL)
+    if (sd != nullptr)
     {
         Packet_Fixed<0x3022> fixed_22;
         fixed_22.party_id = party_id;
@@ -246,7 +246,7 @@ void intif_party_changemap(dumb_ptr<map_session_data> sd, int online)
     if (!char_session)
         return;
 
-    if (sd != NULL)
+    if (sd != nullptr)
     {
         Packet_Fixed<0x3025> fixed_25;
         fixed_25.party_id = sd->status.party_id;
@@ -304,7 +304,7 @@ int intif_parse_WisMessage(Session *, const Packet_Head<0x3801>& head, AString&
                 to);
     }
     sd = map_nick2sd(to); // Searching destination player
-    if (sd != NULL && sd->status_key.name == to)
+    if (sd != nullptr && sd->status_key.name == to)
     {
         // exactly same name (inter-server have checked the name before)
         {
@@ -333,7 +333,7 @@ int intif_parse_WisEnd(Session *, const Packet_Fixed<0x3802>& fixed)
         PRINTF("intif_parse_wisend: player: %s, flag: %d\n"_fmt,
                 name, flag);
     sd = map_nick2sd(name);
-    if (sd != NULL)
+    if (sd != nullptr)
         clif_wis_end(sd->sess, flag);
 
     return 0;
@@ -366,7 +366,7 @@ static
 int intif_parse_AccountReg(Session *, const Packet_Head<0x3804>& head, const std::vector<Packet_Repeat<0x3804>>& repeat)
 {
     dumb_ptr<map_session_data> sd = map_id2sd(account_to_block(head.account_id));
-    if (sd == NULL)
+    if (sd == nullptr)
         return 1;
 
     size_t jlim = std::min(ACCOUNT_REG_NUM, repeat.size());
@@ -388,7 +388,7 @@ int intif_parse_LoadStorage(Session *, const Packet_Payload<0x3810>& payload)
     dumb_ptr<map_session_data> sd;
 
     sd = map_id2sd(account_to_block(payload.account_id));
-    if (sd == NULL)
+    if (sd == nullptr)
     {
         if (battle_config.error_log)
             PRINTF("intif_parse_LoadStorage: user not found %d\n"_fmt,
@@ -541,7 +541,7 @@ RecvResult intif_parse(Session *s, uint16_t packet_id)
             if (rv != RecvResult::Complete)
                 return rv;
 
-            clif_GMmessage(NULL, mes, 0);
+            clif_GMmessage(nullptr, mes, 0);
             break;
         }
         case 0x3801:
diff --git a/src/map/itemdb.cpp b/src/map/itemdb.cpp
index c88a201..67b6d21 100644
--- a/src/map/itemdb.cpp
+++ b/src/map/itemdb.cpp
@@ -62,7 +62,7 @@ struct item_data *itemdb_searchname(XString str_)
     ItemName str = stringish<ItemName>(str_);
     if (XString(str) != str_)
         return nullptr;
-    struct item_data *item = NULL;
+    struct item_data *item = nullptr;
     for (auto& pair : item_db)
         itemdb_searchname_sub(&pair.second, str, &item);
     return item;
@@ -222,8 +222,8 @@ bool itemdb_readdb(ZString filename)
                 id->value_sell = id->value_buy / 2;
             }
 
-            id->use_script = NULL;
-            id->equip_script = NULL;
+            id->use_script = nullptr;
+            id->equip_script = nullptr;
 
             if (!tail_part)
                 continue;
diff --git a/src/map/magic-expr.cpp b/src/map/magic-expr.cpp
index 1e5c829..d54bbee 100644
--- a/src/map/magic-expr.cpp
+++ b/src/map/magic-expr.cpp
@@ -302,8 +302,8 @@ int fun_add(dumb_ptr<env_t>, val_t *result, Slice<val_t> args)
         make_area(&args[0]);
         make_area(&args[1]);
         RESULTAREA = area_union(ARGAREA(0), ARGAREA(1));
-        ARGAREA(0) = NULL;
-        ARGAREA(1) = NULL;
+        ARGAREA(0) = nullptr;
+        ARGAREA(1) = nullptr;
         result->ty = TYPE::AREA;
     }
     else
@@ -830,7 +830,7 @@ int magic_find_item(Slice<val_t> args, int index, Item *item_, int *stackable)
 static
 int fun_count_item(dumb_ptr<env_t>, val_t *result, Slice<val_t> args)
 {
-    dumb_ptr<map_session_data> chr = (ENTITY_TYPE(0) == BL::PC) ? ARGPC(0) : NULL;
+    dumb_ptr<map_session_data> chr = (ENTITY_TYPE(0) == BL::PC) ? ARGPC(0) : nullptr;
     int stackable;
     Item item;
 
@@ -846,7 +846,7 @@ int fun_count_item(dumb_ptr<env_t>, val_t *result, Slice<val_t> args)
 static
 int fun_is_equipped(dumb_ptr<env_t>, val_t *result, Slice<val_t> args)
 {
-    dumb_ptr<map_session_data> chr = (ENTITY_TYPE(0) == BL::PC) ? ARGPC(0) : NULL;
+    dumb_ptr<map_session_data> chr = (ENTITY_TYPE(0) == BL::PC) ? ARGPC(0) : nullptr;
     int stackable;
     Item item;
     bool retval = false;
@@ -935,7 +935,7 @@ int fun_npc(dumb_ptr<env_t>, val_t *result, Slice<val_t> args)
 {
     NpcName name = stringish<NpcName>(ARGSTR(0));
     RESULTENTITY = npc_name2id(name);
-    return RESULTENTITY == NULL;
+    return RESULTENTITY == nullptr;
 }
 
 static
@@ -943,7 +943,7 @@ int fun_pc(dumb_ptr<env_t>, val_t *result, Slice<val_t> args)
 {
     CharName name = stringish<CharName>(ARGSTR(0));
     RESULTENTITY = map_nick2sd(name);
-    return RESULTENTITY == NULL;
+    return RESULTENTITY == nullptr;
 }
 
 static
@@ -1141,7 +1141,7 @@ int fun_is_exterior(dumb_ptr<env_t>, val_t *result, Slice<val_t> args)
 static
 int fun_contains_string(dumb_ptr<env_t>, val_t *result, Slice<val_t> args)
 {
-    RESULTINT = NULL != strstr(ARGSTR(0).c_str(), ARGSTR(1).c_str());
+    RESULTINT = nullptr != strstr(ARGSTR(0).c_str(), ARGSTR(1).c_str());
     return 0;
 }
 
@@ -1150,7 +1150,7 @@ int fun_strstr(dumb_ptr<env_t>, val_t *result, Slice<val_t> args)
 {
     const char *offset = strstr(ARGSTR(0).c_str(), ARGSTR(1).c_str());
     RESULTINT = offset - ARGSTR(0).c_str();
-    return offset == NULL;
+    return offset == nullptr;
 }
 
 static
@@ -1281,7 +1281,7 @@ int fun_dir_towards(dumb_ptr<env_t>, val_t *result, Slice<val_t> args)
 static
 int fun_extract_healer_xp(dumb_ptr<env_t>, val_t *result, Slice<val_t> args)
 {
-    dumb_ptr<map_session_data> sd = (ENTITY_TYPE(0) == BL::PC) ? ARGPC(0) : NULL;
+    dumb_ptr<map_session_data> sd = (ENTITY_TYPE(0) == BL::PC) ? ARGPC(0) : nullptr;
 
     if (!sd)
         RESULTINT = 0;
@@ -1428,7 +1428,7 @@ dumb_ptr<area_t> eval_area(dumb_ptr<env_t> env, e_area_t& expr_)
             if (eval_location(env, &area->a.a_loc, &expr->a.a_loc))
             {
                 area.delete_();
-                return NULL;
+                return nullptr;
             }
             else
                 return area;
@@ -1451,7 +1451,7 @@ dumb_ptr<area_t> eval_area(dumb_ptr<env_t> env, e_area_t& expr_)
                         free_area(area->a.a_union[i]);
                 }
                 area.delete_();
-                return NULL;
+                return nullptr;
             }
             area->size = area->a.a_union[0]->size + area->a.a_union[1]->size;
             return area;
@@ -1481,7 +1481,7 @@ dumb_ptr<area_t> eval_area(dumb_ptr<env_t> env, e_area_t& expr_)
                 area.delete_();
                 magic_clear_var(&width);
                 magic_clear_var(&height);
-                return NULL;
+                return nullptr;
             }
         }
 
@@ -1515,7 +1515,7 @@ dumb_ptr<area_t> eval_area(dumb_ptr<env_t> env, e_area_t& expr_)
                 magic_clear_var(&width);
                 magic_clear_var(&depth);
                 magic_clear_var(&dir);
-                return NULL;
+                return nullptr;
             }
         }
 
@@ -1523,7 +1523,7 @@ dumb_ptr<area_t> eval_area(dumb_ptr<env_t> env, e_area_t& expr_)
             FPRINTF(stderr, "INTERNAL ERROR: Unknown area type %d\n"_fmt,
                     area->ty);
             area.delete_();
-            return NULL;
+            return nullptr;
     }
 }
 
diff --git a/src/map/magic-expr.hpp b/src/map/magic-expr.hpp
index c5c63a5..c3e994b 100644
--- a/src/map/magic-expr.hpp
+++ b/src/map/magic-expr.hpp
@@ -57,7 +57,7 @@ struct fun_t
 /**
  * Retrieves a function by name
  * @param name The name to look up
- * @return A function of that name, or NULL.
+ * @return A function of that name, or nullptr.
  */
 fun_t *magic_get_fun(ZString name);
 
diff --git a/src/map/magic-interpreter-base.cpp b/src/map/magic-interpreter-base.cpp
index 2cc83b4..cf14ae0 100644
--- a/src/map/magic-interpreter-base.cpp
+++ b/src/map/magic-interpreter-base.cpp
@@ -85,7 +85,7 @@ void set_spell SETTER(dumb_ptr<spell_t>, TYPE::SPELL, v_spell)
 #pragma GCC diagnostic pop
 
 magic_conf_t magic_conf;        /* Global magic conf */
-env_t magic_default_env = { &magic_conf, NULL };
+env_t magic_default_env = { &magic_conf, nullptr };
 
 AString magic_find_invocation(XString spellname)
 {
@@ -102,7 +102,7 @@ dumb_ptr<spell_t> magic_find_spell(XString invocation)
     if (it != magic_conf.spells_by_invocation.end())
         return it->second;
 
-    return NULL;
+    return nullptr;
 }
 
 /* -------------------------------------------------------------------------------- */
@@ -125,7 +125,7 @@ dumb_ptr<teleport_anchor_t> magic_find_anchor(XString name)
     if (it != magic_conf.anchors_by_invocation.end())
         return it->second;
 
-    return NULL;
+    return nullptr;
 }
 
 /* -------------------------------------------------------------------------------- */
@@ -201,11 +201,11 @@ dumb_ptr<env_t> spell_create_env(magic_conf_t *conf, dumb_ptr<spell_t> spell,
 static
 void free_components(dumb_ptr<component_t> *component_holder)
 {
-    if (*component_holder == NULL)
+    if (*component_holder == nullptr)
         return;
     free_components(&(*component_holder)->next);
     (*component_holder).delete_();
-    *component_holder = NULL;
+    *component_holder = nullptr;
 }
 
 void magic_add_component(dumb_ptr<component_t> *component_holder, ItemNameId id, int count)
@@ -213,10 +213,10 @@ void magic_add_component(dumb_ptr<component_t> *component_holder, ItemNameId id,
     if (count <= 0)
         return;
 
-    if (*component_holder == NULL)
+    if (*component_holder == nullptr)
     {
         auto component = dumb_ptr<component_t>::make();
-        component->next = NULL;
+        component->next = nullptr;
         component->item_id = id;
         component->count = count;
         *component_holder = component;
@@ -238,7 +238,7 @@ void magic_add_component(dumb_ptr<component_t> *component_holder, ItemNameId id,
 static
 void copy_components(dumb_ptr<component_t> *component_holder, dumb_ptr<component_t> component)
 {
-    if (component == NULL)
+    if (component == nullptr)
         return;
 
     magic_add_component(component_holder, component->item_id, component->count);
@@ -314,14 +314,14 @@ effect_set_t *spellguard_check_sub(spellguard_check_t *check,
         dumb_ptr<env_t> env,
         int *near_miss)
 {
-    if (guard == NULL)
-        return NULL;
+    if (guard == nullptr)
+        return nullptr;
 
     switch (guard->ty)
     {
         case SPELLGUARD::CONDITION:
             if (!magic_eval_int(env, guard->s.s_condition))
-                return NULL;
+                return nullptr;
             break;
 
         case SPELLGUARD::COMPONENTS:
@@ -337,8 +337,8 @@ effect_set_t *spellguard_check_sub(spellguard_check_t *check,
             spellguard_check_t altcheck = *check;
             effect_set_t *retval;
 
-            altcheck.components = NULL;
-            altcheck.catalysts = NULL;
+            altcheck.components = nullptr;
+            altcheck.catalysts = nullptr;
 
             copy_components(&altcheck.catalysts, check->catalysts);
             copy_components(&altcheck.components, check->components);
@@ -367,12 +367,12 @@ effect_set_t *spellguard_check_sub(spellguard_check_t *check,
             if (spellguard_can_satisfy(check, caster, env, near_miss))
                 return &guard->s.s_effect;
             else
-                return NULL;
+                return nullptr;
 
         default:
             FPRINTF(stderr, "Unexpected spellguard type %d\n"_fmt,
                     guard->ty);
-            return NULL;
+            return nullptr;
     }
 
     return spellguard_check_sub(check, guard->next, caster, env, near_miss);
@@ -385,8 +385,8 @@ effect_set_t *check_spellguard(dumb_ptr<spellguard_t> guard,
 {
     spellguard_check_t check;
     effect_set_t *retval;
-    check.catalysts = NULL;
-    check.components = NULL;
+    check.catalysts = nullptr;
+    check.components = nullptr;
     check.mana = 0;
     check.casttime = interval_t::zero();
 
@@ -478,7 +478,7 @@ dumb_ptr<invocation> spell_clone_effect(dumb_ptr<invocation> base)
     // since this is the only call site, it is expanded here
     //*retval = *base;
 
-    retval->next_invocation = NULL;
+    retval->next_invocation = nullptr;
     retval->flags = INVOCATION_FLAG::ZERO;
     dumb_ptr<env_t> env = retval->env = clone_env(base->env);
     retval->spell = base->spell;
@@ -491,12 +491,12 @@ dumb_ptr<invocation> spell_clone_effect(dumb_ptr<invocation> base)
     // huh?
     retval->current_effect = base->trigger_effect;
     retval->trigger_effect = base->trigger_effect;
-    retval->end_effect = NULL;
-    // retval->status_change_refs = NULL;
+    retval->end_effect = nullptr;
+    // retval->status_change_refs = nullptr;
 
     retval->bl_id = BlockId();
-    retval->bl_prev = NULL;
-    retval->bl_next = NULL;
+    retval->bl_prev = nullptr;
+    retval->bl_next = nullptr;
     retval->bl_m = base->bl_m;
     retval->bl_x = base->bl_x;
     retval->bl_y = base->bl_y;
@@ -517,7 +517,7 @@ void spell_bind(dumb_ptr<map_session_data> subject, dumb_ptr<invocation> invocat
         if (bool(invocation->flags & INVOCATION_FLAG::BOUND)
             || invocation->subject || invocation->next_invocation)
         {
-            int *i = NULL;
+            int *i = nullptr;
             FPRINTF(stderr,
                     "[magic] INTERNAL ERROR: Attempt to re-bind spell invocation `%s'\n"_fmt,
                     invocation->spell->name);
@@ -545,7 +545,7 @@ int spell_unbind(dumb_ptr<map_session_data> subject, dumb_ptr<invocation> invoca
             *seeker = invocation_->next_invocation;
 
             invocation_->flags &= ~INVOCATION_FLAG::BOUND;
-            invocation_->next_invocation = NULL;
+            invocation_->next_invocation = nullptr;
             invocation_->subject = BlockId();
 
             return 0;
diff --git a/src/map/magic-interpreter-base.hpp b/src/map/magic-interpreter-base.hpp
index 7d75049..d569434 100644
--- a/src/map/magic-interpreter-base.hpp
+++ b/src/map/magic-interpreter-base.hpp
@@ -32,7 +32,7 @@ extern magic_conf_t magic_conf; /* Global magic conf */
 extern env_t magic_default_env; /* Fake default environment */
 
 /**
- * Adds a component selection to a component holder (which may initially be NULL)
+ * Adds a component selection to a component holder (which may initially be nullptr)
  */
 void magic_add_component(dumb_ptr<component_t> *component_holder, ItemNameId id, int count);
 
diff --git a/src/map/magic-interpreter.hpp b/src/map/magic-interpreter.hpp
index cf0991e..d8a8d9c 100644
--- a/src/map/magic-interpreter.hpp
+++ b/src/map/magic-interpreter.hpp
@@ -394,8 +394,8 @@ struct invocation : block_list
 
     int script_pos;            /* Script position; if nonzero, resume the script we were running. */
     dumb_ptr<effect_t> current_effect;
-    dumb_ptr<effect_t> trigger_effect;   /* If non-NULL, this is used to spawn a cloned effect based on the same environment */
-    dumb_ptr<effect_t> end_effect;       /* If non-NULL, this is executed when the spell terminates naturally, e.g. when all status changes have run out or all delays are over. */
+    dumb_ptr<effect_t> trigger_effect;   /* If non-nullptr, this is used to spawn a cloned effect based on the same environment */
+    dumb_ptr<effect_t> end_effect;       /* If non-nullptr, this is executed when the spell terminates naturally, e.g. when all status changes have run out or all delays are over. */
 
     /* Status change references:  for status change updates, keep track of whom we updated where */
     std::vector<status_change_ref_t> status_change_refv;
diff --git a/src/map/magic-stmt.cpp b/src/map/magic-stmt.cpp
index 2cfb43e..2fbe556 100644
--- a/src/map/magic-stmt.cpp
+++ b/src/map/magic-stmt.cpp
@@ -228,7 +228,7 @@ void try_to_finish_invocation(dumb_ptr<invocation> invocation)
         {
             clear_stack(invocation);
             invocation->current_effect = invocation->end_effect;
-            invocation->end_effect = NULL;
+            invocation->end_effect = nullptr;
             spell_execute(invocation);
         }
         else
@@ -341,7 +341,7 @@ static
 int op_instaheal(dumb_ptr<env_t> env, Slice<val_t> args)
 {
     dumb_ptr<block_list> caster = (env->VAR(VAR_CASTER).ty == TYPE::ENTITY)
-        ? map_id2bl(wrap<BlockId>(static_cast<uint32_t>(env->VAR(VAR_CASTER).v.v_int))) : NULL;
+        ? map_id2bl(wrap<BlockId>(static_cast<uint32_t>(env->VAR(VAR_CASTER).v.v_int))) : nullptr;
     dumb_ptr<block_list> subject = ARGENTITY(0);
     if (!caster)
         caster = subject;
@@ -704,7 +704,7 @@ int op_spawn(dumb_ptr<env_t>, Slice<val_t> args)
     interval_t monster_lifetime = static_cast<interval_t>(ARGINT(5));
     int i;
 
-    dumb_ptr<map_session_data> owner = NULL;
+    dumb_ptr<map_session_data> owner = nullptr;
     if (monster_attitude == MonsterAttitude::SERVANT
         && owner_e->bl_type == BL::PC)
         owner = owner_e->is_player();
@@ -847,7 +847,7 @@ int op_emote(dumb_ptr<env_t>, Slice<val_t> args)
 static
 int op_set_script_variable(dumb_ptr<env_t>, Slice<val_t> args)
 {
-    dumb_ptr<map_session_data> c = (ENTITY_TYPE(0) == BL::PC) ? ARGPC(0) : NULL;
+    dumb_ptr<map_session_data> c = (ENTITY_TYPE(0) == BL::PC) ? ARGPC(0) : nullptr;
     VarName varname = stringish<VarName>(ARGSTR(1));
     int array_index = 0;
 
@@ -862,7 +862,7 @@ int op_set_script_variable(dumb_ptr<env_t>, Slice<val_t> args)
 static
 int op_set_script_str(dumb_ptr<env_t>, Slice<val_t> args)
 {
-    dumb_ptr<map_session_data> c = (ENTITY_TYPE(0) == BL::PC) ? ARGPC(0) : NULL;
+    dumb_ptr<map_session_data> c = (ENTITY_TYPE(0) == BL::PC) ? ARGPC(0) : nullptr;
     VarName varname = stringish<VarName>(ARGSTR(1));
     int array_index = 0;
 
@@ -877,7 +877,7 @@ int op_set_script_str(dumb_ptr<env_t>, Slice<val_t> args)
 static
 int op_set_hair_colour(dumb_ptr<env_t>, Slice<val_t> args)
 {
-    dumb_ptr<map_session_data> c = (ENTITY_TYPE(0) == BL::PC) ? ARGPC(0) : NULL;
+    dumb_ptr<map_session_data> c = (ENTITY_TYPE(0) == BL::PC) ? ARGPC(0) : nullptr;
 
     if (!c)
         return 1;
@@ -890,7 +890,7 @@ int op_set_hair_colour(dumb_ptr<env_t>, Slice<val_t> args)
 static
 int op_set_hair_style(dumb_ptr<env_t>, Slice<val_t> args)
 {
-    dumb_ptr<map_session_data> c = (ENTITY_TYPE(0) == BL::PC) ? ARGPC(0) : NULL;
+    dumb_ptr<map_session_data> c = (ENTITY_TYPE(0) == BL::PC) ? ARGPC(0) : nullptr;
 
     if (!c)
         return 1;
@@ -908,10 +908,10 @@ int op_drop_item_for (dumb_ptr<env_t>, Slice<val_t> args)
     location_t *loc = &ARGLOCATION(0);
     int count = ARGINT(2);
     interval_t interval = static_cast<interval_t>(ARGINT(3));
-    dumb_ptr<map_session_data> c = ((args.size() > 4) && (ENTITY_TYPE(4) == BL::PC)) ? ARGPC(4) : NULL;
+    dumb_ptr<map_session_data> c = ((args.size() > 4) && (ENTITY_TYPE(4) == BL::PC)) ? ARGPC(4) : nullptr;
     interval_t delay = (args.size() > 5) ? static_cast<interval_t>(ARGINT(5)) : interval_t::zero();
     interval_t delaytime[3] = { delay, delay, delay };
-    dumb_ptr<map_session_data> owners[3] = { c, NULL, NULL };
+    dumb_ptr<map_session_data> owners[3] = { c, nullptr, nullptr };
 
     GET_ARG_ITEM(1, item, stackable);
 
@@ -929,7 +929,7 @@ int op_drop_item_for (dumb_ptr<env_t>, Slice<val_t> args)
 static
 int op_gain_exp(dumb_ptr<env_t>, Slice<val_t> args)
 {
-    dumb_ptr<map_session_data> c = (ENTITY_TYPE(0) == BL::PC) ? ARGPC(0) : NULL;
+    dumb_ptr<map_session_data> c = (ENTITY_TYPE(0) == BL::PC) ? ARGPC(0) : nullptr;
 
     if (!c)
         return 1;
@@ -1015,7 +1015,7 @@ static
 dumb_ptr<effect_t> return_to_stack(dumb_ptr<invocation> invocation_)
 {
     if (!invocation_->stack_size)
-        return NULL;
+        return nullptr;
     else
     {
         cont_activation_record_t *ar =
@@ -1091,7 +1091,7 @@ dumb_ptr<effect_t> return_to_stack(dumb_ptr<invocation> invocation_)
                 FPRINTF(stderr,
                         "[magic] INTERNAL ERROR: While executing spell `%s':  stack corruption\n"_fmt,
                         invocation_->spell->name);
-                return NULL;
+                return nullptr;
         }
     }
 }
@@ -1108,7 +1108,7 @@ cont_activation_record_t *add_stack_entry(dumb_ptr<invocation> invocation_,
                 "[magic] Execution stack size exceeded in spell `%s'; truncating effect\n"_fmt,
                 invocation_->spell->name);
         invocation_->stack_size--;
-        return NULL;
+        return nullptr;
     }
 
     ar->ty = ty;
@@ -1417,11 +1417,11 @@ interval_t spell_run(dumb_ptr<invocation> invocation_, int allow_delete)
 
             case EFFECT::ABORT:
                 invocation_->flags |= INVOCATION_FLAG::ABORTED;
-                invocation_->end_effect = NULL;
+                invocation_->end_effect = nullptr;
                 FALLTHROUGH;
             case EFFECT::END:
                 clear_stack(invocation_);
-                next = NULL;
+                next = nullptr;
                 break;
 
             case EFFECT::ASSIGN:
diff --git a/src/map/magic-stmt.hpp b/src/map/magic-stmt.hpp
index 97fdf1f..745b9b5 100644
--- a/src/map/magic-stmt.hpp
+++ b/src/map/magic-stmt.hpp
@@ -40,7 +40,7 @@ struct op_t
 /**
  * Retrieves an operation by name
  * @param name The name to look up
- * @return An operation of that name, or NULL, and a function index
+ * @return An operation of that name, or nullptr, and a function index
  */
 op_t *magic_get_op(ZString name);
 
diff --git a/src/map/magic-v2.cpp b/src/map/magic-v2.cpp
index ba43cb9..a287519 100644
--- a/src/map/magic-v2.cpp
+++ b/src/map/magic-v2.cpp
@@ -116,7 +116,7 @@ namespace magic_v2
         if (it != const_defm.end())
             return &it->second;
 
-        return NULL;
+        return nullptr;
     }
     static
     dumb_ptr<effect_t> new_effect(EFFECT ty)
diff --git a/src/map/magic.cpp b/src/map/magic.cpp
index 2cfa1e4..ff4a278 100644
--- a/src/map/magic.cpp
+++ b/src/map/magic.cpp
@@ -97,11 +97,11 @@ int magic_message(dumb_ptr<map_session_data> caster, XString source_invocation)
         if (bool(spell->flags & SPELL_FLAG::NONMAGIC) || (power >= 1))
             effects = spell_trigger(spell, caster, env, &near_miss);
         else
-            effects = NULL;
+            effects = nullptr;
 
 #ifdef DEBUG
         FPRINTF(stderr, "Found spell `%s', triggered = %d\n"_fmt, spell_,
-                effects != NULL);
+                effects != nullptr);
 #endif
 
         MAP_LOG_PC(caster, "CAST %s %s"_fmt,
diff --git a/src/map/map.cpp b/src/map/map.cpp
index 28d618b..97523b0 100644
--- a/src/map/map.cpp
+++ b/src/map/map.cpp
@@ -189,12 +189,12 @@ struct block_list bl_head;
  */
 int map_addblock(dumb_ptr<block_list> bl)
 {
-    nullpo_ret(bl);
+    nullpo_retz(bl);
 
     if (bl->bl_prev)
     {
         if (battle_config.error_log)
-            PRINTF("map_addblock error : bl->bl_prev!=NULL\n"_fmt);
+            PRINTF("map_addblock error : bl->bl_prev!=nullptr\n"_fmt);
         return 0;
     }
 
@@ -234,7 +234,7 @@ int map_addblock(dumb_ptr<block_list> bl)
  */
 int map_delblock(dumb_ptr<block_list> bl)
 {
-    nullpo_ret(bl);
+    nullpo_retz(bl);
 
     // 既にblocklistから抜けている
     if (!bl->bl_prev)
@@ -243,7 +243,7 @@ int map_delblock(dumb_ptr<block_list> bl)
         {
             // prevがNULLでnextがNULLでないのは有ってはならない
             if (battle_config.error_log)
-                PRINTF("map_delblock error : bl->bl_next!=NULL\n"_fmt);
+                PRINTF("map_delblock error : bl->bl_next!=nullptr\n"_fmt);
         }
         return 0;
     }
@@ -269,8 +269,8 @@ int map_delblock(dumb_ptr<block_list> bl)
     {
         bl->bl_prev->bl_next = bl->bl_next;
     }
-    bl->bl_next = NULL;
-    bl->bl_prev = NULL;
+    bl->bl_next = nullptr;
+    bl->bl_prev = nullptr;
 
     return 0;
 }
@@ -282,7 +282,7 @@ int map_delblock(dumb_ptr<block_list> bl)
 int map_count_oncell(map_local *m, int x, int y)
 {
     int bx, by;
-    dumb_ptr<block_list> bl = NULL;
+    dumb_ptr<block_list> bl = nullptr;
     int count = 0;
 
     if (x < 0 || y < 0 || (x >= m->xs) || (y >= m->ys))
@@ -606,7 +606,7 @@ void map_delobject(BlockId id, BL type)
     assert (id < MAX_FLOORITEM);
     dumb_ptr<block_list> obj = object[id._value];
 
-    if (obj == NULL)
+    if (obj == nullptr)
         return;
 
     map_delobjectnofree(id, type);
@@ -666,7 +666,7 @@ void map_clearflooritem_timer(TimerData *tid, tick_t, BlockId id)
     dumb_ptr<flooritem_data> fitem = obj->is_item();
     if (!tid)
         fitem->cleartimer.cancel();
-    clif_clearflooritem(fitem, 0);
+    clif_clearflooritem(fitem, nullptr);
     map_delobject(fitem->bl_id, BL::ITEM);
 }
 
@@ -702,7 +702,7 @@ BlockId map_addflooritem_any(Item *item_data, int amount,
         dumb_ptr<map_session_data> *owners, interval_t *owner_protection,
         interval_t lifetime, int dispersal)
 {
-    dumb_ptr<flooritem_data> fitem = NULL;
+    dumb_ptr<flooritem_data> fitem = nullptr;
 
     nullpo_retr(BlockId(), item_data);
     auto xy = map_searchrandfreecell(m, x, y, dispersal);
@@ -711,7 +711,7 @@ BlockId map_addflooritem_any(Item *item_data, int amount,
 
     fitem.new_();
     fitem->bl_type = BL::ITEM;
-    fitem->bl_prev = fitem->bl_next = NULL;
+    fitem->bl_prev = fitem->bl_next = nullptr;
     fitem->bl_m = m;
     fitem->bl_x = xy.first;
     fitem->bl_y = xy.second;
@@ -789,7 +789,7 @@ BlockId map_addflooritem(Item *item_data, int amount,
 void map_addchariddb(CharId charid, CharName name)
 {
     struct charid2nick *p = charid_db.search(charid);
-    if (p == NULL)
+    if (p == nullptr)
         p = charid_db.init(charid);
 
     p->nick = name;
@@ -901,7 +901,7 @@ dumb_ptr<map_session_data> map_id2sd(BlockId id)
         bl=numdb_search(id_db,id);
         if (bl && bl->bl_type==BL::PC)
                 return (struct map_session_data*)bl;
-        return NULL;
+        return nullptr;
 */
     for (io::FD i : iter_fds())
     {
@@ -916,7 +916,7 @@ dumb_ptr<map_session_data> map_id2sd(BlockId id)
         }
     }
 
-    return NULL;
+    return nullptr;
 }
 
 /*==========================================
@@ -927,7 +927,7 @@ CharName map_charid2nick(CharId id)
 {
     struct charid2nick *p = charid_db.search(id);
 
-    if (p == NULL)
+    if (p == nullptr)
         return CharName();
     if (p->req_id != 0)
         return CharName();
@@ -949,7 +949,7 @@ dumb_ptr<map_session_data> map_get_session(io::FD i)
             return dumb_ptr<map_session_data>(d);
     }
 
-    return NULL;
+    return nullptr;
 }
 
 static
@@ -962,7 +962,7 @@ dumb_ptr<map_session_data> map_get_session_forward(int start)
             return d;
     }
 
-    return NULL;
+    return nullptr;
 }
 
 static
@@ -975,7 +975,7 @@ dumb_ptr<map_session_data> map_get_session_backward(int start)
             return d;
     }
 
-    return NULL;
+    return nullptr;
 }
 
 dumb_ptr<map_session_data> map_get_first_session(void)
@@ -1001,7 +1001,7 @@ dumb_ptr<map_session_data> map_get_prev_session(dumb_ptr<map_session_data> d)
 /*==========================================
  * Search session data from a nick name
  * (without sensitive case if necessary)
- * return map_session_data pointer or NULL
+ * return map_session_data pointer or nullptr
  *------------------------------------------
  */
 dumb_ptr<map_session_data> map_nick2sd(CharName nick)
@@ -1020,7 +1020,7 @@ dumb_ptr<map_session_data> map_nick2sd(CharName nick)
             }
         }
     }
-    return NULL;
+    return nullptr;
 }
 
 /*==========================================
@@ -1030,7 +1030,7 @@ dumb_ptr<map_session_data> map_nick2sd(CharName nick)
  */
 dumb_ptr<block_list> map_id2bl(BlockId id)
 {
-    dumb_ptr<block_list> bl = NULL;
+    dumb_ptr<block_list> bl = nullptr;
     if (id < MAX_FLOORITEM)
         bl = object[id._value];
     else
@@ -1049,7 +1049,7 @@ int map_addnpc(map_local *m, dumb_ptr<npc_data> nd)
     if (!m)
         return -1;
     for (i = 0; i < m->npc_num && i < MAX_NPC_PER_MAP; i++)
-        if (m->npc[i] == NULL)
+        if (m->npc[i] == nullptr)
             break;
     if (i == MAX_NPC_PER_MAP)
     {
@@ -1062,7 +1062,7 @@ int map_addnpc(map_local *m, dumb_ptr<npc_data> nd)
         m->npc_num++;
     }
 
-    nullpo_ret(nd);
+    nullpo_retz(nd);
 
     m->npc[i] = nd;
     nd->n = i;
@@ -1083,7 +1083,7 @@ void map_removenpc(void)
         map_local *m = static_cast<map_local *>(mitp.second.get());
         for (int i = 0; i < m->npc_num && i < MAX_NPC_PER_MAP; i++)
         {
-            if (m->npc[i] != NULL)
+            if (m->npc[i] != nullptr)
             {
                 clif_clearchar(m->npc[i], BeingRemoveWhy::QUIT);
                 map_delblock(m->npc[i]);
@@ -1108,7 +1108,7 @@ void map_removenpc(void)
 map_local *map_mapname2mapid(MapName name)
 {
     map_abstract *md = maps_db.get(name);
-    if (md == NULL || md->gat == NULL)
+    if (md == nullptr || md->gat == nullptr)
         return nullptr;
     return static_cast<map_local *>(md);
 }
@@ -1120,7 +1120,7 @@ map_local *map_mapname2mapid(MapName name)
 int map_mapname2ipport(MapName name, IP4Address *ip, int *port)
 {
     map_abstract *md = maps_db.get(name);
-    if (md == NULL || md->gat)
+    if (md == nullptr || md->gat)
         return -1;
     map_remote *mdos = static_cast<map_remote *>(md);
     *ip = mdos->ip;
@@ -1229,12 +1229,12 @@ void map_setcell(map_local *m, int x, int y, MapCell t)
 int map_setipport(MapName name, IP4Address ip, int port)
 {
     map_abstract *md = maps_db.get(name);
-    if (md == NULL)
+    if (md == nullptr)
     {
         // not exist -> add new data
         auto mdos = make_unique<map_remote>();
         mdos->name_ = name;
-        mdos->gat = NULL;
+        mdos->gat = nullptr;
         mdos->ip = ip;
         mdos->port = port;
         maps_db.put(mdos->name_, std::move(mdos));
@@ -1397,7 +1397,7 @@ void map_close_logfile(void)
             "gzip",
             "-f",
             filename.c_str(),
-            NULL
+            nullptr
         };
         char **argv = const_cast<char **>(args);
 
@@ -1408,7 +1408,7 @@ void map_close_logfile(void)
             execvp("gzip", argv);
             _exit(1);
         }
-        wait(NULL);
+        wait(nullptr);
     }
 }
 
@@ -1435,7 +1435,7 @@ void map_set_logfile(AString filename)
     struct timeval tv;
 
     map_logfile_name = std::move(filename);
-    gettimeofday(&tv, NULL);
+    gettimeofday(&tv, nullptr);
 
     map_start_logfile(tv.tv_sec >> LOGFILE_SECONDS_PER_CHUNK_SHIFT);
 
@@ -1466,7 +1466,7 @@ void map_log(XString line)
 static
 bool map_config_read(ZString cfgName)
 {
-    struct hostent *h = NULL;
+    struct hostent *h = nullptr;
 
     io::ReadFile in(cfgName);
     if (!in.is_open())
@@ -1503,7 +1503,7 @@ bool map_config_read(ZString cfgName)
         {
             h = gethostbyname(w2.c_str());
             IP4Address w2ip;
-            if (h != NULL)
+            if (h != nullptr)
             {
                 w2ip = IP4Address({
                         static_cast<uint8_t>(h->h_addr[0]),
@@ -1529,7 +1529,7 @@ bool map_config_read(ZString cfgName)
         {
             h = gethostbyname(w2.c_str());
             IP4Address w2ip;
-            if (h != NULL)
+            if (h != nullptr)
             {
                 w2ip = IP4Address({
                         static_cast<uint8_t>(h->h_addr[0]),
diff --git a/src/map/map.hpp b/src/map/map.hpp
index 8fc752b..aa2d97a 100644
--- a/src/map/map.hpp
+++ b/src/map/map.hpp
@@ -509,7 +509,7 @@ struct BlockLists
 struct map_abstract
 {
     MapName name_;
-    // gat is NULL for map_remote and non-NULL or map_local
+    // gat is nullptr for map_remote and non-nullptr or map_local
     std::unique_ptr<MapCell[]> gat;
 
     virtual ~map_abstract() {}
diff --git a/src/map/mob.cpp b/src/map/mob.cpp
index 01a1029..166031f 100644
--- a/src/map/mob.cpp
+++ b/src/map/mob.cpp
@@ -132,8 +132,8 @@ void mob_spawn_dataset(dumb_ptr<mob_data> md, MobName mobname, Species mob_class
     else
         md->name = mobname;
 
-    md->bl_prev = NULL;
-    md->bl_next = NULL;
+    md->bl_prev = nullptr;
+    md->bl_next = nullptr;
     md->n = 0;
     md->mob_class = mob_class;
     md->bl_id = npc_get_new_npc_id();
@@ -400,7 +400,7 @@ BlockId mob_once_spawn(dumb_ptr<map_session_data> sd,
         MobName mobname, Species mob_class, int amount,
         NpcEvent event)
 {
-    dumb_ptr<mob_data> md = NULL;
+    dumb_ptr<mob_data> md = nullptr;
     map_local *m;
     int count;
 
@@ -555,7 +555,7 @@ int mob_get_equip(Species mob_class)   // mob equip [Valaris]
 static
 int mob_can_move(dumb_ptr<mob_data> md)
 {
-    nullpo_ret(md);
+    nullpo_retz(md);
 
     if (md->canmove_tick > gettick()
         || (bool(md->opt1) && md->opt1 != Opt1::_stone6))
@@ -593,7 +593,7 @@ int mob_walk(dumb_ptr<mob_data> md, tick_t tick, unsigned char data)
     int moveblock;
     int x, y, dx, dy;
 
-    nullpo_ret(md);
+    nullpo_retz(md);
 
     md->state.state = MS::IDLE;
     if (md->walkpath.path_pos >= md->walkpath.path_len
@@ -688,14 +688,14 @@ int mob_walk(dumb_ptr<mob_data> md, tick_t tick, unsigned char data)
 static
 int mob_check_attack(dumb_ptr<mob_data> md)
 {
-    dumb_ptr<block_list> tbl = NULL;
-    dumb_ptr<map_session_data> tsd = NULL;
-    dumb_ptr<mob_data> tmd = NULL;
+    dumb_ptr<block_list> tbl = nullptr;
+    dumb_ptr<map_session_data> tsd = nullptr;
+    dumb_ptr<mob_data> tmd = nullptr;
 
     MobMode mode;
     int range;
 
-    nullpo_ret(md);
+    nullpo_retz(md);
 
     md->min_chase = 13;
     md->state.state = MS::IDLE;
@@ -707,7 +707,7 @@ int mob_check_attack(dumb_ptr<mob_data> md)
     if (bool(md->opt1))
         return 0;
 
-    if ((tbl = map_id2bl(md->target_id)) == NULL)
+    if ((tbl = map_id2bl(md->target_id)) == nullptr)
     {
         md->target_id = BlockId();
         md->state.attackable = false;
@@ -724,7 +724,7 @@ int mob_check_attack(dumb_ptr<mob_data> md)
     if (tsd)
     {
         if (pc_isdead(tsd) || tsd->invincible_timer
-            || pc_isinvisible(tsd) || md->bl_m != tbl->bl_m || tbl->bl_prev == NULL
+            || pc_isinvisible(tsd) || md->bl_m != tbl->bl_m || tbl->bl_prev == nullptr
             || distance(md->bl_x, md->bl_y, tbl->bl_x, tbl->bl_y) >= 13)
         {
             md->target_id = BlockId();
@@ -734,7 +734,7 @@ int mob_check_attack(dumb_ptr<mob_data> md)
     }
     if (tmd)
     {
-        if (md->bl_m != tbl->bl_m || tbl->bl_prev == NULL
+        if (md->bl_m != tbl->bl_m || tbl->bl_prev == nullptr
             || distance(md->bl_x, md->bl_y, tbl->bl_x, tbl->bl_y) >= 13)
         {
             md->target_id = BlockId();
@@ -790,11 +790,11 @@ void mob_ancillary_attack(dumb_ptr<block_list> bl,
 static
 int mob_attack(dumb_ptr<mob_data> md, tick_t tick)
 {
-    dumb_ptr<block_list> tbl = NULL;
+    dumb_ptr<block_list> tbl = nullptr;
 
-    nullpo_ret(md);
+    nullpo_retz(md);
 
-    if ((tbl = map_id2bl(md->target_id)) == NULL)
+    if ((tbl = map_id2bl(md->target_id)) == nullptr)
         return 0;
 
     if (!mob_check_attack(md))
@@ -851,7 +851,7 @@ void mob_stopattacked(dumb_ptr<map_session_data> sd, BlockId id)
 static
 int mob_changestate(dumb_ptr<mob_data> md, MS state, bool type)
 {
-    nullpo_ret(md);
+    nullpo_retz(md);
 
     md->timer.cancel();
     md->state.state = state;
@@ -926,7 +926,7 @@ void mob_timer(TimerData *, tick_t tick, BlockId id, unsigned char data)
     dumb_ptr<mob_data> md;
     dumb_ptr<block_list> bl;
     bl = map_id2bl(id);
-    if (bl == NULL)
+    if (bl == nullptr)
     {                           //攻撃してきた敵がもういないのは正常のようだ
         return;
     }
@@ -936,7 +936,7 @@ void mob_timer(TimerData *, tick_t tick, BlockId id, unsigned char data)
 
     md = bl->is_mob();
 
-    if (md->bl_prev == NULL || md->state.state == MS::DEAD)
+    if (md->bl_prev == nullptr || md->state.state == MS::DEAD)
         return;
 
     MapBlockLock lock;
@@ -966,7 +966,7 @@ int mob_walktoxy_sub(dumb_ptr<mob_data> md)
 {
     struct walkpath_data wpd;
 
-    nullpo_ret(md);
+    nullpo_retz(md);
 
     if (path_search(&wpd, md->bl_m, md->bl_x, md->bl_y, md->to_x, md->to_y,
          md->state.walk_easy))
@@ -989,7 +989,7 @@ int mob_walktoxy(dumb_ptr<mob_data> md, int x, int y, int easy)
 {
     struct walkpath_data wpd;
 
-    nullpo_ret(md);
+    nullpo_retz(md);
 
     if (md->state.state == MS::WALK
         && path_search(&wpd, md->bl_m, md->bl_x, md->bl_y, x, y, easy))
@@ -1030,7 +1030,7 @@ int mob_setdelayspawn(BlockId id)
     dumb_ptr<mob_data> md;
     dumb_ptr<block_list> bl;
 
-    if ((bl = map_id2bl(id)) == NULL)
+    if ((bl = map_id2bl(id)) == nullptr)
         return -1;
 
     if (!bl || bl->bl_type == BL::NUL || bl->bl_type != BL::MOB)
@@ -1089,7 +1089,7 @@ int mob_spawn(BlockId id)
         return -1;
 
     md->last_spawntime = tick;
-    if (md->bl_prev != NULL)
+    if (md->bl_prev != nullptr)
     {
         map_delblock(md);
     }
@@ -1219,7 +1219,7 @@ int mob_stopattack(dumb_ptr<mob_data> md)
  */
 int mob_stop_walking(dumb_ptr<mob_data> md, int type)
 {
-    nullpo_ret(md);
+    nullpo_retz(md);
 
     if (md->state.state == MS::WALK || md->state.state == MS::IDLE)
     {
@@ -1272,8 +1272,8 @@ int mob_can_reach(dumb_ptr<mob_data> md, dumb_ptr<block_list> bl, int range)
     struct walkpath_data wpd;
     int i;
 
-    nullpo_ret(md);
-    nullpo_ret(bl);
+    nullpo_retz(md);
+    nullpo_retz(bl);
 
     dx = abs(bl->bl_x - md->bl_x);
     dy = abs(bl->bl_y - md->bl_y);
@@ -1329,8 +1329,8 @@ int mob_target(dumb_ptr<mob_data> md, dumb_ptr<block_list> bl, int dist)
     eptr<struct status_change, StatusChange, StatusChange::MAX_STATUSCHANGE> sc_data;
     MobMode mode;
 
-    nullpo_ret(md);
-    nullpo_ret(bl);
+    nullpo_retz(md);
+    nullpo_retz(bl);
 
     sc_data = battle_get_sc_data(bl);
     Option *option = battle_get_option(bl);
@@ -1357,14 +1357,14 @@ int mob_target(dumb_ptr<mob_data> md, dumb_ptr<block_list> bl, int dist)
 
     // Coercion is exerted if it is MVPMOB.
     if (bool(mode & MobMode::BOSS)
-        || (option != NULL
+        || (option != nullptr
             || race == Race::_insect
             || race == Race::_demon))
     {
         if (bl->bl_type == BL::PC)
         {
             sd = bl->is_player();
-            nullpo_ret(sd);
+            nullpo_retz(sd);
             if (sd->invincible_timer || pc_isinvisible(sd))
                 return 0;
             if (!bool(mode & MobMode::BOSS) && race != Race::_insect && race != Race::_demon
@@ -1392,8 +1392,8 @@ static
 void mob_ai_sub_hard_activesearch(dumb_ptr<block_list> bl,
         dumb_ptr<mob_data> smd, int *pcc)
 {
-    dumb_ptr<map_session_data> tsd = NULL;
-    dumb_ptr<mob_data> tmd = NULL;
+    dumb_ptr<map_session_data> tsd = nullptr;
+    dumb_ptr<mob_data> tmd = nullptr;
     MobMode mode;
     int dist;
 
@@ -1544,14 +1544,14 @@ void mob_ai_sub_hard_linksearch(dumb_ptr<block_list> bl, dumb_ptr<mob_data> md,
 static
 int mob_ai_sub_hard_slavemob(dumb_ptr<mob_data> md, tick_t tick)
 {
-    dumb_ptr<mob_data> mmd = NULL;
+    dumb_ptr<mob_data> mmd = nullptr;
     dumb_ptr<block_list> bl;
     MobMode mode;
     int old_dist;
 
-    nullpo_ret(md);
+    nullpo_retz(md);
 
-    if ((bl = map_id2bl(md->master_id)) != NULL)
+    if ((bl = map_id2bl(md->master_id)) != nullptr)
         mmd = bl->is_mob();
 
     mode = get_mob_db(md->mob_class).mode;
@@ -1646,7 +1646,7 @@ int mob_ai_sub_hard_slavemob(dumb_ptr<mob_data> md, tick_t tick)
         && (!md->target_id || !md->state.attackable))
     {
         dumb_ptr<map_session_data> sd = map_id2sd(mmd->target_id);
-        if (sd != NULL && !pc_isdead(sd) && !sd->invincible_timer
+        if (sd != nullptr && !pc_isdead(sd) && !sd->invincible_timer
             && !pc_isinvisible(sd))
         {
 
@@ -1676,7 +1676,7 @@ int mob_ai_sub_hard_slavemob(dumb_ptr<mob_data> md, tick_t tick)
 static
 int mob_unlocktarget(dumb_ptr<mob_data> md, tick_t tick)
 {
-    nullpo_ret(md);
+    nullpo_retz(md);
 
     md->target_id = BlockId();
     md->state.attackable = false;
@@ -1694,7 +1694,7 @@ int mob_randomwalk(dumb_ptr<mob_data> md, tick_t tick)
 {
     const int retrycount = 20;
 
-    nullpo_ret(md);
+    nullpo_retz(md);
 
     interval_t speed = battle_get_speed(md);
     if (md->next_walktime < tick)
@@ -1749,9 +1749,9 @@ int mob_randomwalk(dumb_ptr<mob_data> md, tick_t tick)
 static
 void mob_ai_sub_hard(dumb_ptr<block_list> bl, tick_t tick)
 {
-    dumb_ptr<mob_data> md, tmd = NULL;
-    dumb_ptr<map_session_data> tsd = NULL;
-    dumb_ptr<block_list> tbl = NULL;
+    dumb_ptr<mob_data> md, tmd = nullptr;
+    dumb_ptr<map_session_data> tsd = nullptr;
+    dumb_ptr<block_list> tbl = nullptr;
     dumb_ptr<flooritem_data> fitem;
     int i, dx, dy, ret, dist;
     int attack_type = 0;
@@ -1764,7 +1764,7 @@ void mob_ai_sub_hard(dumb_ptr<block_list> bl, tick_t tick)
         return;
     md->last_thinktime = tick;
 
-    if (md->skilltimer || md->bl_prev == NULL)
+    if (md->skilltimer || md->bl_prev == nullptr)
     {
         // Under a skill aria and death
         if (tick > md->next_walktime + MIN_MOBTHINKTIME)
@@ -1808,12 +1808,12 @@ void mob_ai_sub_hard(dumb_ptr<block_list> bl, tick_t tick)
             || (bool(mode & MobMode::AGGRESSIVE) && random_::chance({25, 100}))))
     {
         dumb_ptr<block_list> abl = map_id2bl(md->attacked_id);
-        dumb_ptr<map_session_data> asd = NULL;
+        dumb_ptr<map_session_data> asd = nullptr;
         if (abl)
         {
             if (abl->bl_type == BL::PC)
                 asd = abl->is_player();
-            if (asd == NULL || md->bl_m != abl->bl_m || abl->bl_prev == NULL
+            if (asd == nullptr || md->bl_m != abl->bl_m || abl->bl_prev == nullptr
                 || asd->invincible_timer || pc_isinvisible(asd)
                 || (dist =
                     distance(md->bl_x, md->bl_y, abl->bl_x, abl->bl_y)) >= 32
@@ -1885,7 +1885,7 @@ void mob_ai_sub_hard(dumb_ptr<block_list> bl, tick_t tick)
                 tmd = tbl->is_mob();
             if (tsd || tmd)
             {
-                if (tbl->bl_m != md->bl_m || tbl->bl_prev == NULL
+                if (tbl->bl_m != md->bl_m || tbl->bl_prev == nullptr
                     || (dist =
                         distance(md->bl_x, md->bl_y, tbl->bl_x,
                                   tbl->bl_y)) >= md->min_chase)
@@ -1974,7 +1974,7 @@ void mob_ai_sub_hard(dumb_ptr<block_list> bl, tick_t tick)
             }
             else
             {                   // ルートモンスター処理
-                if (tbl == NULL || tbl->bl_type != BL::ITEM || tbl->bl_m != md->bl_m
+                if (tbl == nullptr || tbl->bl_type != BL::ITEM || tbl->bl_m != md->bl_m
                     || (dist =
                         distance(md->bl_x, md->bl_y, tbl->bl_x,
                                   tbl->bl_y)) >= md->min_chase
@@ -2105,7 +2105,7 @@ void mob_ai_sub_lazy(dumb_ptr<block_list> bl, tick_t tick)
         return;
     md->last_thinktime = tick;
 
-    if (md->bl_prev == NULL || md->skilltimer)
+    if (md->bl_prev == nullptr || md->skilltimer)
     {
         if (tick > md->next_walktime + MIN_MOBTHINKTIME * 10)
             md->next_walktime = tick;
@@ -2254,7 +2254,7 @@ int mob_delete(dumb_ptr<mob_data> md)
 {
     nullpo_retr(1, md);
 
-    if (md->bl_prev == NULL)
+    if (md->bl_prev == nullptr)
         return 1;
     mob_changestate(md, MS::DEAD, 0);
     clif_clearchar(md, BeingRemoveWhy::DEAD);
@@ -2268,7 +2268,7 @@ int mob_catch_delete(dumb_ptr<mob_data> md, BeingRemoveWhy type)
 {
     nullpo_retr(1, md);
 
-    if (md->bl_prev == NULL)
+    if (md->bl_prev == nullptr)
         return 1;
     mob_changestate(md, MS::DEAD, 0);
     clif_clearchar(md, type);
@@ -2301,7 +2301,7 @@ void mob_deleteslave_sub(dumb_ptr<block_list> bl, BlockId id)
     md = bl->is_mob();
 
     if (md->master_id && md->master_id == id)
-        mob_damage(NULL, md, md->hp, 1);
+        mob_damage(nullptr, md, md->hp, 1);
 }
 
 /*==========================================
@@ -2310,7 +2310,7 @@ void mob_deleteslave_sub(dumb_ptr<block_list> bl, BlockId id)
  */
 int mob_deleteslave(dumb_ptr<mob_data> md)
 {
-    nullpo_ret(md);
+    nullpo_retz(md);
 
     map_foreachinarea(std::bind(mob_deleteslave_sub, ph::_1, md->bl_id),
             md->bl_m,
@@ -2335,12 +2335,12 @@ double damage_bonus_factor[DAMAGE_BONUS_COUNT + 1] =
 int mob_damage(dumb_ptr<block_list> src, dumb_ptr<mob_data> md, int damage,
                 int type)
 {
-    dumb_ptr<map_session_data> sd = NULL;
+    dumb_ptr<map_session_data> sd = nullptr;
     int max_hp;
     tick_t tick = gettick();
-    dumb_ptr<map_session_data> mvp_sd = NULL, second_sd = NULL, third_sd = NULL;
+    dumb_ptr<map_session_data> mvp_sd = nullptr, second_sd = nullptr, third_sd = nullptr;
 
-    nullpo_ret(md);        //srcはNULLで呼ばれる場合もあるので、他でチェック
+    nullpo_retz(md);        //srcはNULLで呼ばれる場合もあるので、他でチェック
 
     if (src && src->bl_id == md->master_id
         && bool(md->mode & MobMode::TURNS_AGAINST_BAD_MASTER))
@@ -2360,7 +2360,7 @@ int mob_damage(dumb_ptr<block_list> src, dumb_ptr<mob_data> md, int damage,
         mvp_sd = sd;
     }
 
-    if (md->bl_prev == NULL)
+    if (md->bl_prev == nullptr)
     {
         if (battle_config.error_log == 1)
             PRINTF("mob_damage : BlockError!!\n"_fmt);
@@ -2369,7 +2369,7 @@ int mob_damage(dumb_ptr<block_list> src, dumb_ptr<mob_data> md, int damage,
 
     if (md->state.state == MS::DEAD || md->hp <= 0)
     {
-        if (md->bl_prev != NULL)
+        if (md->bl_prev != nullptr)
         {
             mob_changestate(md, MS::DEAD, 0);
             // It is skill at the time of death.
@@ -2395,7 +2395,7 @@ int mob_damage(dumb_ptr<block_list> src, dumb_ptr<mob_data> md, int damage,
 
     if (!(type & 2))
     {
-        if (sd != NULL)
+        if (sd != nullptr)
         {
             for (mob_data::DmgLogEntry& dle : md->dmglogv)
             {
@@ -2430,7 +2430,7 @@ int mob_damage(dumb_ptr<block_list> src, dumb_ptr<mob_data> md, int damage,
                         damage);
             }
 
-            nullpo_ret(md2);
+            nullpo_retz(md2);
             for (mob_data::DmgLogEntry& dle : md->dmglogv)
             {
                 if (dle.id == md2->master_id)
@@ -2501,7 +2501,7 @@ int mob_damage(dumb_ptr<block_list> src, dumb_ptr<mob_data> md, int damage,
         {
             dumb_ptr<map_session_data> tmpsdi = map_id2sd(dle.id);
             int tmpdmg = dle.dmg;
-            if (tmpsdi == NULL)
+            if (tmpsdi == nullptr)
                 continue;
             if (tmpsdi->bl_m != md->bl_m || pc_isdead(tmpsdi))
                 continue;
@@ -2668,9 +2668,9 @@ int mob_damage(dumb_ptr<block_list> src, dumb_ptr<mob_data> md, int damage,
     // SCRIPT実行
     if (md->npc_event)
     {
-        if (sd == NULL)
+        if (sd == nullptr)
         {
-            if (mvp_sd != NULL)
+            if (mvp_sd != nullptr)
                 sd = mvp_sd;
             else
             {
@@ -2711,7 +2711,7 @@ int mob_heal(dumb_ptr<mob_data> md, int heal)
 {
     int max_hp = battle_get_max_hp(md);
 
-    nullpo_ret(md);
+    nullpo_retz(md);
 
     md->hp += heal;
     if (max_hp < md->hp)
@@ -2758,9 +2758,9 @@ int mob_warp(dumb_ptr<mob_data> md, map_local *m, int x, int y, BeingRemoveWhy t
 {
     int i = 0, xs = 0, ys = 0, bx = x, by = y;
 
-    nullpo_ret(md);
+    nullpo_retz(md);
 
-    if (md->bl_prev == NULL)
+    if (md->bl_prev == nullptr)
         return 0;
 
     if (m == nullptr)
@@ -2859,7 +2859,7 @@ int mob_countslave(dumb_ptr<mob_data> md)
 {
     int c = 0;
 
-    nullpo_ret(md);
+    nullpo_retz(md);
 
     map_foreachinarea(std::bind(mob_countslave_sub, ph::_1, md->bl_id, &c),
             md->bl_m,
@@ -2878,8 +2878,8 @@ int mob_summonslave(dumb_ptr<mob_data> md2, int *value_, int amount, int flag)
     dumb_ptr<mob_data> md;
     int bx, by, count = 0, a = amount;
 
-    nullpo_ret(md2);
-    nullpo_ret(value_);
+    nullpo_retz(md2);
+    nullpo_retz(value_);
 
     bx = md2->bl_x;
     by = md2->bl_y;
@@ -2922,8 +2922,8 @@ int mob_summonslave(dumb_ptr<mob_data> md2, int *value_, int amount, int flag)
             }
 
             mob_spawn_dataset(md, JAPANESE_NAME, mob_class);
-            md->bl_prev = NULL;
-            md->bl_next = NULL;
+            md->bl_prev = nullptr;
+            md->bl_next = nullptr;
             md->bl_m = m;
             md->bl_x = x;
             md->bl_y = y;
@@ -2987,7 +2987,7 @@ int mob_counttargeted(dumb_ptr<mob_data> md, dumb_ptr<block_list> src,
 {
     int c = 0;
 
-    nullpo_ret(md);
+    nullpo_retz(md);
 
     map_foreachinarea(std::bind(mob_counttargeted_sub, ph::_1, md->bl_id, &c, src, target_lv),
             md->bl_m,
@@ -3007,19 +3007,19 @@ int mob_counttargeted(dumb_ptr<mob_data> md, dumb_ptr<block_list> src,
  */
 void mobskill_castend_id(TimerData *, tick_t tick, BlockId id)
 {
-    dumb_ptr<mob_data> md = NULL;
+    dumb_ptr<mob_data> md = nullptr;
     dumb_ptr<block_list> bl;
     dumb_ptr<block_list> mbl;
     int range;
 
-    if ((mbl = map_id2bl(id)) == NULL) //詠唱したMobがもういないというのは良くある正常処理
+    if ((mbl = map_id2bl(id)) == nullptr) //詠唱したMobがもういないというのは良くある正常処理
         return;
-    if ((md = mbl->is_mob()) == NULL)
+    if ((md = mbl->is_mob()) == nullptr)
     {
         PRINTF("mobskill_castend_id nullpo mbl->bl_id:%d\n"_fmt, mbl->bl_id);
         return;
     }
-    if (md->bl_type != BL::MOB || md->bl_prev == NULL)
+    if (md->bl_type != BL::MOB || md->bl_prev == nullptr)
         return;
 
     if (bool(md->opt1))
@@ -3028,7 +3028,7 @@ void mobskill_castend_id(TimerData *, tick_t tick, BlockId id)
     if (md->skillid != SkillID::NPC_EMOTION)
         md->last_thinktime = tick + battle_get_adelay(md);
 
-    if ((bl = map_id2bl(md->skilltarget)) == NULL || bl->bl_prev == NULL)
+    if ((bl = map_id2bl(md->skilltarget)) == nullptr || bl->bl_prev == nullptr)
     {                           //スキルターゲットが存在しない
         return;
     }
@@ -3073,18 +3073,18 @@ void mobskill_castend_id(TimerData *, tick_t tick, BlockId id)
  */
 void mobskill_castend_pos(TimerData *, tick_t tick, BlockId id)
 {
-    dumb_ptr<mob_data> md = NULL;
+    dumb_ptr<mob_data> md = nullptr;
     dumb_ptr<block_list> bl;
     int range;
 
     //mobskill_castend_id同様詠唱したMobが詠唱完了時にもういないというのはありそうなのでnullpoから除外
-    if ((bl = map_id2bl(id)) == NULL)
+    if ((bl = map_id2bl(id)) == nullptr)
         return;
 
     md = bl->is_mob();
     nullpo_retv(md);
 
-    if (md->bl_type != BL::MOB || md->bl_prev == NULL)
+    if (md->bl_type != BL::MOB || md->bl_prev == nullptr)
         return;
 
     if (bool(md->opt1))
@@ -3115,13 +3115,13 @@ int mobskill_use_id(dumb_ptr<mob_data> md, dumb_ptr<block_list> target,
     SkillID skill_id;
     int skill_lv;
 
-    nullpo_ret(md);
+    nullpo_retz(md);
     ms = &skill_idx;
 
-    if (target == NULL && (target = map_id2bl(md->target_id)) == NULL)
+    if (target == nullptr && (target = map_id2bl(md->target_id)) == nullptr)
         return 0;
 
-    if (target->bl_prev == NULL || md->bl_prev == NULL)
+    if (target->bl_prev == nullptr || md->bl_prev == nullptr)
         return 0;
 
     skill_id = ms->skill_id;
@@ -3190,10 +3190,10 @@ int mobskill_use_pos(dumb_ptr<mob_data> md,
     struct block_list bl;
     int skill_lv;
 
-    nullpo_ret(md);
+    nullpo_retz(md);
     ms = &skill_idx;
 
-    if (md->bl_prev == NULL)
+    if (md->bl_prev == nullptr)
         return 0;
 
     SkillID skill_id = ms->skill_id;
@@ -3257,7 +3257,7 @@ int mobskill_use(dumb_ptr<mob_data> md, tick_t tick,
 {
     int max_hp;
 
-    nullpo_ret(md);
+    nullpo_retz(md);
     std::vector<mob_skill>& ms = get_mob_db(md->mob_class).skills;
 
     max_hp = battle_get_max_hp(md);
@@ -3312,7 +3312,7 @@ int mobskill_use(dumb_ptr<mob_data> md, tick_t tick,
             if (skill_get_inf(msii.skill_id) & 2)
             {
                 // 場所指定
-                dumb_ptr<block_list> bl = NULL;
+                dumb_ptr<block_list> bl = nullptr;
                 int x = 0, y = 0;
                 {
                     if (msii.target == MobSkillTarget::MST_TARGET)
@@ -3334,7 +3334,7 @@ int mobskill_use(dumb_ptr<mob_data> md, tick_t tick,
             else
             {
                 {
-                    dumb_ptr<block_list> bl = NULL;
+                    dumb_ptr<block_list> bl = nullptr;
                     if (msii.target == MobSkillTarget::MST_TARGET)
                         bl = map_id2bl(md->target_id);
                     else
@@ -3358,7 +3358,7 @@ int mobskill_use(dumb_ptr<mob_data> md, tick_t tick,
  */
 int mobskill_event(dumb_ptr<mob_data> md, BF flag)
 {
-    nullpo_ret(md);
+    nullpo_retz(md);
 
     if (flag == BF::NEGATIVE_1
         && mobskill_use(md, gettick(), MobSkillCondition::ANY))
diff --git a/src/map/npc.cpp b/src/map/npc.cpp
index 7d2b8da..275b41d 100644
--- a/src/map/npc.cpp
+++ b/src/map/npc.cpp
@@ -123,7 +123,7 @@ void npc_enable_sub(dumb_ptr<block_list> bl, dumb_ptr<npc_data> nd)
 int npc_enable(NpcName name, bool flag)
 {
     dumb_ptr<npc_data> nd = npc_name2id(name);
-    if (nd == NULL)
+    if (nd == nullptr)
     {
         PRINTF("npc_enable(%s, %s) failed.\n"_fmt, name, flag ? "true"_s : "false"_s);
         return 0;
@@ -172,7 +172,7 @@ dumb_ptr<npc_data> npc_name2id(NpcName name)
  */
 int npc_event_dequeue(dumb_ptr<map_session_data> sd)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     sd->npc_id = BlockId();
 
@@ -195,7 +195,7 @@ int npc_delete(dumb_ptr<npc_data> nd)
 {
     nullpo_retr(1, nd);
 
-    if (nd->bl_prev == NULL)
+    if (nd->bl_prev == nullptr)
         return 1;
 
     clif_clearchar(nd, BeingRemoveWhy::DEAD);
@@ -209,7 +209,7 @@ void npc_timer_event(NpcEvent eventname)
     dumb_ptr<npc_data_script> nd;
 //  int xs,ys;
 
-    if ((ev == NULL || (nd = ev->nd) == NULL))
+    if ((ev == nullptr || (nd = ev->nd) == nullptr))
     {
         PRINTF("npc_event: event not found [%s]\n"_fmt,
                 eventname);
@@ -330,7 +330,7 @@ static
 void npc_timerevent(TimerData *, tick_t tick, BlockId id, interval_t data)
 {
     dumb_ptr<npc_data_script> nd = map_id2bl(id)->is_npc()->is_script();
-    assert (nd != NULL);
+    assert (nd != nullptr);
     assert (nd->npc_subtype == NpcSubtype::SCRIPT);
     assert (nd->scr.next_event != nd->scr.timer_eventv.end());
 
@@ -466,15 +466,15 @@ int npc_event(dumb_ptr<map_session_data> sd, NpcEvent eventname,
     dumb_ptr<npc_data_script> nd;
     int xs, ys;
 
-    if (sd == NULL)
+    if (sd == nullptr)
     {
         PRINTF("npc_event nullpo?\n"_fmt);
     }
 
-    if (ev == NULL && eventname.label == stringish<ScriptLabel>("OnTouch"_s))
+    if (ev == nullptr && eventname.label == stringish<ScriptLabel>("OnTouch"_s))
         return 1;
 
-    if (ev == NULL || (nd = ev->nd) == NULL)
+    if (ev == nullptr || (nd = ev->nd) == nullptr)
     {
         if (mob_kill)
         {
@@ -635,11 +635,11 @@ int npc_checknear(dumb_ptr<map_session_data> sd, BlockId id)
 {
     dumb_ptr<npc_data> nd;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     nd = map_id_is_npc(id);
     // this actually happens
-    if (nd == NULL)
+    if (nd == nullptr)
         return 1;
     if (nd->bl_type != BL::NPC)
         return 1;
@@ -846,7 +846,7 @@ int npc_buylist(dumb_ptr<map_session_data> sd,
         const ItemNameId& item_l_id = item_list[i].name_id;
 
         struct item_data *item_data;
-        if ((item_data = itemdb_exists(item_l_id)) != NULL)
+        if ((item_data = itemdb_exists(item_l_id)) != nullptr)
         {
             int amount = item_l_count;
             Item item_tmp {};
@@ -1027,7 +1027,7 @@ int npc_parse_warp(XString w1, XString, NpcName w3, XString w4)
     nd->bl_id = npc_get_new_npc_id();
     nd->n = map_addnpc(m, nd);
 
-    nd->bl_prev = nd->bl_next = NULL;
+    nd->bl_prev = nd->bl_next = nullptr;
     nd->bl_m = m;
     nd->bl_x = x;
     nd->bl_y = y;
@@ -1088,7 +1088,7 @@ bool extract(XString xs, npc_item_list *itv)
         goto return_true;
 
     id = itemdb_searchname(name_or_id.rstrip());
-    if (id == NULL)
+    if (id == nullptr)
         return false;
     itv->nameid = id->nameid;
     goto return_true;
@@ -1096,7 +1096,7 @@ bool extract(XString xs, npc_item_list *itv)
 return_true:
     if (itv->value < 0)
     {
-        if (id == NULL)
+        if (id == nullptr)
             id = itemdb_search(itv->nameid);
         itv->value = id->value_buy * abs(itv->value);
     }
@@ -1145,7 +1145,7 @@ int npc_parse_shop(XString w1, XString, NpcName w3, ZString w4a)
         return 1;
     }
 
-    nd->bl_prev = nd->bl_next = NULL;
+    nd->bl_prev = nd->bl_next = nullptr;
     nd->bl_m = m;
     nd->bl_x = x;
     nd->bl_y = y;
@@ -1200,7 +1200,7 @@ int npc_parse_script(XString w1, XString w2, NpcName w3, ZString w4,
     int xs = 0, ys = 0;   // [Valaris] thanks to fov
     Species npc_class;
     MapName mapname;
-    std::unique_ptr<const ScriptBuffer> script = NULL;
+    std::unique_ptr<const ScriptBuffer> script = nullptr;
     dumb_ptr<npc_data_script> nd;
     int evflag = 0;
 
@@ -1257,7 +1257,7 @@ int npc_parse_script(XString w1, XString w2, NpcName w3, ZString w4,
             srcbuf += '\n';
         }
         script = parse_script(AString(srcbuf), startline, false);
-        if (script == NULL)
+        if (script == nullptr)
             // script parse error?
             return 1;
     }
@@ -1327,7 +1327,7 @@ int npc_parse_script(XString w1, XString w2, NpcName w3, ZString w4,
         nd->name = w3;
     }
 
-    nd->bl_prev = nd->bl_next = NULL;
+    nd->bl_prev = nd->bl_next = nullptr;
     nd->bl_m = m;
     nd->bl_x = x;
     nd->bl_y = y;
@@ -1452,7 +1452,7 @@ int npc_parse_function(XString, XString, XString w3, ZString,
         srcbuf += '\n';
     }
     std::unique_ptr<const ScriptBuffer> script = parse_script(AString(srcbuf), startline, false);
-    if (script == NULL)
+    if (script == nullptr)
     {
         // script parse error?
         return 1;
@@ -1500,8 +1500,8 @@ int npc_parse_mob(XString w1, XString, MobName w3, ZString w4)
     {
         md.new_();
 
-        md->bl_prev = NULL;
-        md->bl_next = NULL;
+        md->bl_prev = nullptr;
+        md->bl_next = nullptr;
         md->bl_m = m;
         md->bl_x = x;
         md->bl_y = y;
diff --git a/src/map/npc.hpp b/src/map/npc.hpp
index 2c91dbd..f8ae650 100644
--- a/src/map/npc.hpp
+++ b/src/map/npc.hpp
@@ -63,7 +63,7 @@ BlockId npc_get_new_npc_id(void);
 /**
  * Spawns and installs a talk-only NPC
  *
- * \param message The message to speak.  If message is NULL, the NPC will not do anything at all.
+ * \param message The message to speak.  If message is nullptr, the NPC will not do anything at all.
  */
 dumb_ptr<npc_data> npc_spawn_text(map_local *m, int x, int y,
         Species class_, NpcName name, AString message);
diff --git a/src/map/party.cpp b/src/map/party.cpp
index 24ce66a..61df355 100644
--- a/src/map/party.cpp
+++ b/src/map/party.cpp
@@ -96,7 +96,7 @@ PartyPair party_searchname(PartyName str)
 /* Process a party creation request. */
 int party_create(dumb_ptr<map_session_data> sd, PartyName name)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     name = stringish<PartyName>(name.strip());
 
@@ -155,7 +155,7 @@ void party_request_info(PartyId party_id)
 static
 int party_check_member(PartyPair p)
 {
-    nullpo_ret(p);
+    nullpo_retz(p);
 
     for (io::FD i : iter_fds())
     {
@@ -177,7 +177,7 @@ int party_check_member(PartyPair p)
                         else
                         {
                             // I can prove it was already zeroed
-                            // p->member[j].sd = NULL; // 同垢別キャラだった
+                            // p->member[j].sd = nullptr; // 同垢別キャラだった
                         }
                     }
                 }
@@ -217,7 +217,7 @@ int party_recv_info(const PartyPair sp)
 {
     int i;
 
-    nullpo_ret(sp);
+    nullpo_retz(sp);
 
     PartyPair p = party_search(sp.party_id);
     if (!p)
@@ -234,8 +234,8 @@ int party_recv_info(const PartyPair sp)
     for (i = 0; i < MAX_PARTY; i++)
     {                           // sdの設定
         dumb_ptr<map_session_data> sd = map_id2sd(account_to_block(p->member[i].account_id));
-        p->member[i].sd = (sd != NULL
-                           && sd->status.party_id == p.party_id) ? sd.operator->() : NULL;
+        p->member[i].sd = (sd != nullptr
+                           && sd->status.party_id == p.party_id) ? sd.operator->() : nullptr;
     }
 
     clif_party_info(p, nullptr);
@@ -244,7 +244,7 @@ int party_recv_info(const PartyPair sp)
     {                           // 設定情報の送信
 //      dumb_ptr<map_session_data> sd = map_id2sd(p->member[i].account_id);
         dumb_ptr<map_session_data> sd = dumb_ptr<map_session_data>(p->member[i].sd);
-        if (sd != NULL && sd->party_sended == 0)
+        if (sd != nullptr && sd->party_sended == 0)
         {
             clif_party_option(p, sd, 0x100);
             sd->party_sended = 1;
@@ -262,7 +262,7 @@ int party_invite(dumb_ptr<map_session_data> sd, AccountId account_id)
     int i;
     int full = 1; /* Indicates whether or not there's room for one more. */
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (!tsd || !p || !tsd->sess)
         return 0;
@@ -321,7 +321,7 @@ int party_invite(dumb_ptr<map_session_data> sd, AccountId account_id)
 /* Process response to party invitation. */
 int party_reply_invite(dumb_ptr<map_session_data> sd, AccountId account_id, int flag)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     /* There is no pending invitation. */
     if (!sd->party_invite || !sd->party_invite_account)
@@ -341,7 +341,7 @@ int party_reply_invite(dumb_ptr<map_session_data> sd, AccountId account_id, int
     else
     {
         /* This is the player who sent the invitation. */
-        dumb_ptr<map_session_data> tsd = NULL;
+        dumb_ptr<map_session_data> tsd = nullptr;
 
         sd->party_invite = PartyId();
         sd->party_invite_account = AccountId();
@@ -358,7 +358,7 @@ int party_member_added(PartyId party_id, AccountId account_id, int flag)
     dumb_ptr<map_session_data> sd = map_id2sd(account_to_block(account_id)), sd2;
     PartyPair p = party_search(party_id);
 
-    if (sd == NULL)
+    if (sd == nullptr)
     {
         if (flag == 0)
         {
@@ -382,7 +382,7 @@ int party_member_added(PartyId party_id, AccountId account_id, int flag)
 
     if (flag == 1)
     {                           // 失敗
-        if (sd2 != NULL)
+        if (sd2 != nullptr)
             clif_party_inviteack(sd2, sd->status_key.name, 0);
         return 0;
     }
@@ -391,7 +391,7 @@ int party_member_added(PartyId party_id, AccountId account_id, int flag)
     sd->party_sended = 0;
     sd->status.party_id = party_id;
 
-    if (sd2 != NULL)
+    if (sd2 != nullptr)
         clif_party_inviteack(sd2, sd->status_key.name, 2);
 
     // いちおう競合確認
@@ -408,7 +408,7 @@ int party_removemember(dumb_ptr<map_session_data> sd, AccountId account_id)
     PartyPair p;
     int i;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (!(p = party_search(sd->status.party_id)))
         return 0;
@@ -439,7 +439,7 @@ int party_leave(dumb_ptr<map_session_data> sd)
     PartyPair p;
     int i;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (!(p = party_search(sd->status.party_id)))
         return 0;
@@ -468,10 +468,10 @@ int party_member_leaved(PartyId party_id, AccountId account_id, CharName name)
             {
                 clif_party_leaved(p, sd, account_id, name, 0x00);
                 p->member[i].account_id = AccountId();
-                p->member[i].sd = NULL;
+                p->member[i].sd = nullptr;
             }
     }
-    if (sd != NULL && sd->status.party_id == party_id)
+    if (sd != nullptr && sd->status.party_id == party_id)
     {
         sd->status.party_id = PartyId();
         sd->party_sended = 0;
@@ -489,7 +489,7 @@ int party_broken(PartyId party_id)
 
     for (i = 0; i < MAX_PARTY; i++)
     {
-        if (p->member[i].sd != NULL)
+        if (p->member[i].sd != nullptr)
         {
             clif_party_leaved(p, dumb_ptr<map_session_data>(p->member[i].sd),
                                p->member[i].account_id, p->member[i].name,
@@ -507,7 +507,7 @@ int party_changeoption(dumb_ptr<map_session_data> sd, int exp, int item)
 {
     PartyPair p;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (!sd->status.party_id
         || !(p = party_search(sd->status.party_id)))
@@ -545,7 +545,7 @@ void party_recv_movemap(PartyId party_id, AccountId account_id, MapName mapname,
     for (i = 0; i < MAX_PARTY; i++)
     {
         PartyMember *m = &p->member[i];
-        if (m == NULL)
+        if (m == nullptr)
         {
             PRINTF("party_recv_movemap nullpo?\n"_fmt);
             return;
@@ -569,8 +569,8 @@ void party_recv_movemap(PartyId party_id, AccountId account_id, MapName mapname,
     for (i = 0; i < MAX_PARTY; i++)
     {                           // sd再設定
         dumb_ptr<map_session_data> sd = map_id2sd(account_to_block(p->member[i].account_id));
-        p->member[i].sd = (sd != NULL
-                           && sd->status.party_id == p.party_id) ? sd.operator->() : NULL;
+        p->member[i].sd = (sd != nullptr
+                           && sd->status.party_id == p.party_id) ? sd.operator->() : nullptr;
     }
 
     party_send_xy_clear(p);    // 座標再通知要請
@@ -583,7 +583,7 @@ int party_send_movemap(dumb_ptr<map_session_data> sd)
 {
     PartyPair p;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (!sd->status.party_id)
         return 0;
@@ -615,7 +615,7 @@ int party_send_logout(dumb_ptr<map_session_data> sd)
 {
     PartyPair p;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (sd->status.party_id)
         intif_party_changemap(sd, 0);
@@ -626,7 +626,7 @@ int party_send_logout(dumb_ptr<map_session_data> sd)
         int i;
         for (i = 0; i < MAX_PARTY; i++)
             if (dumb_ptr<map_session_data>(p->member[i].sd) == sd)
-                p->member[i].sd = NULL;
+                p->member[i].sd = nullptr;
     }
 
     return 0;
@@ -669,7 +669,7 @@ void party_send_xyhp_timer_sub(PartyPair p)
     for (i = 0; i < MAX_PARTY; i++)
     {
         dumb_ptr<map_session_data> sd = dumb_ptr<map_session_data>(p->member[i].sd);
-        if (sd != NULL)
+        if (sd != nullptr)
         {
             // 座標通知
             if (sd->party_x != sd->bl_x || sd->party_y != sd->bl_y)
@@ -711,7 +711,7 @@ void party_send_xy_clear(PartyPair p)
     for (i = 0; i < MAX_PARTY; i++)
     {
         dumb_ptr<map_session_data> sd = dumb_ptr<map_session_data>(p->member[i].sd);
-        if (sd != NULL)
+        if (sd != nullptr)
         {
             sd->party_x = -1;
             sd->party_y = -1;
@@ -741,12 +741,12 @@ int party_exp_share(PartyPair p, map_local *mapid, int base_exp, int job_exp)
     dumb_ptr<map_session_data> sd;
     int i, c;
 
-    nullpo_ret(p);
+    nullpo_retz(p);
 
     for (i = c = 0; i < MAX_PARTY; i++)
     {
         sd = dumb_ptr<map_session_data>(p->member[i].sd);
-        if (sd != NULL && sd->bl_m == mapid)
+        if (sd != nullptr && sd->bl_m == mapid)
             c++;
     }
     if (c == 0)
@@ -754,7 +754,7 @@ int party_exp_share(PartyPair p, map_local *mapid, int base_exp, int job_exp)
     for (i = 0; i < MAX_PARTY; i++)
     {
         sd = dumb_ptr<map_session_data>(p->member[i].sd);
-        if (sd != NULL && sd->bl_m == mapid)
+        if (sd != nullptr && sd->bl_m == mapid)
             pc_gainexp_reason(sd, base_exp / c + 1, job_exp / c + 1,
             PC_GAINEXP_REASON::SHARING);
     }
@@ -786,7 +786,7 @@ void party_foreachsamemap(std::function<void(dumb_ptr<block_list>)> func,
     for (i = 0; i < MAX_PARTY; i++)
     {
         PartyMember *m = &p->member[i];
-        if (m->sd != NULL)
+        if (m->sd != nullptr)
         {
             if (sd->bl_m != m->sd->bl_m)
                 continue;
diff --git a/src/map/path.cpp b/src/map/path.cpp
index fb423e7..432d9cf 100644
--- a/src/map/path.cpp
+++ b/src/map/path.cpp
@@ -59,7 +59,7 @@ void push_heap_path(int *heap, struct tmp_path *tp, int index)
 {
     int i, h;
 
-    if (heap == NULL || tp == NULL)
+    if (heap == nullptr || tp == nullptr)
     {
         PRINTF("push_heap_path nullpo\n"_fmt);
         return;
@@ -145,7 +145,7 @@ int calc_cost(struct tmp_path *p, int x1, int y1)
 {
     int xd, yd;
 
-    nullpo_ret(p);
+    nullpo_retz(p);
 
     xd = x1 - p->x;
     if (xd < 0)
@@ -166,8 +166,8 @@ int add_path(int *heap, struct tmp_path *tp, int x, int y, int dist,
 {
     int i;
 
-    nullpo_ret(heap);
-    nullpo_ret(tp);
+    nullpo_retz(heap);
+    nullpo_retz(tp);
 
     i = calc_index(x, y);
 
@@ -211,7 +211,7 @@ int add_path(int *heap, struct tmp_path *tp, int x, int y, int dist,
 static
 bool can_place(struct map_local *m, int x, int y)
 {
-    nullpo_ret(m);
+    nullpo_retz(m);
 
     return !bool(read_gatp(m, x, y) & MapCell::UNWALKABLE);
 }
@@ -223,7 +223,7 @@ bool can_place(struct map_local *m, int x, int y)
 static
 int can_move(struct map_local *m, int x0, int y0, int x1, int y1)
 {
-    nullpo_ret(m);
+    nullpo_retz(m);
 
     if (x0 - x1 < -1 || x0 - x1 > 1 || y0 - y1 < -1 || y0 - y1 > 1)
         return 0;
@@ -250,7 +250,7 @@ int path_search(struct walkpath_data *wpd, map_local *m, int x0, int y0, int x1,
     int i, rp, x, y;
     int dx, dy;
 
-    nullpo_ret(wpd);
+    nullpo_retz(wpd);
 
     assert (m->gat);
     map_local *md = m;
diff --git a/src/map/pc.cpp b/src/map/pc.cpp
index d37a7ff..48afffc 100644
--- a/src/map/pc.cpp
+++ b/src/map/pc.cpp
@@ -281,7 +281,7 @@ GmLevel pc_isGM(dumb_ptr<map_session_data> sd)
 int pc_iskiller(dumb_ptr<map_session_data> src,
                  dumb_ptr<map_session_data> target)
 {
-    nullpo_ret(src);
+    nullpo_retz(src);
 
     if (src->bl_type != BL::PC)
         return 0;
@@ -319,13 +319,13 @@ void pc_invincible_timer(TimerData *, tick_t, BlockId id)
 {
     dumb_ptr<map_session_data> sd = map_id2sd(id);
 
-    assert (sd != NULL);
+    assert (sd != nullptr);
     assert (sd->bl_type == BL::PC);
 }
 
 int pc_setinvincibletimer(dumb_ptr<map_session_data> sd, interval_t val)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     sd->invincible_timer = Timer(gettick() + val,
             std::bind(pc_invincible_timer, ph::_1, ph::_2,
@@ -335,7 +335,7 @@ int pc_setinvincibletimer(dumb_ptr<map_session_data> sd, interval_t val)
 
 int pc_delinvincibletimer(dumb_ptr<map_session_data> sd)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     sd->invincible_timer.cancel();
     return 0;
@@ -343,7 +343,7 @@ int pc_delinvincibletimer(dumb_ptr<map_session_data> sd)
 
 int pc_setrestartvalue(dumb_ptr<map_session_data> sd, int type)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     {
         if (battle_config.restart_hp_rate < 50)
@@ -475,7 +475,7 @@ void pc_makesavestatus(dumb_ptr<map_session_data> sd)
 int pc_setnewpc(dumb_ptr<map_session_data> sd, AccountId account_id, CharId char_id,
         int login_id1, uint32_t client_tick, SEX sex)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     // TODO this is the primary surface
     sd->bl_id = account_to_block(account_id);
@@ -512,7 +512,7 @@ EPOS pc_equippoint(dumb_ptr<map_session_data> sd, IOff0 n)
 static
 int pc_setinventorydata(dumb_ptr<map_session_data> sd)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     for (IOff0 i : IOff0::iter())
     {
@@ -525,7 +525,7 @@ int pc_setinventorydata(dumb_ptr<map_session_data> sd)
 static
 int pc_calcweapontype(dumb_ptr<map_session_data> sd)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (sd->weapontype1 != ItemLook::NONE
             && sd->weapontype2 == ItemLook::NONE)
@@ -568,7 +568,7 @@ int pc_calcweapontype(dumb_ptr<map_session_data> sd)
 static
 int pc_setequipindex(dumb_ptr<map_session_data> sd)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     for (EQUIP i : EQUIPs)
         sd->equip_index_maybe[i] = IOff0::from(-1);
@@ -620,7 +620,7 @@ int pc_isequip(dumb_ptr<map_session_data> sd, IOff0 n)
     eptr<struct status_change, StatusChange, StatusChange::MAX_STATUSCHANGE> sc_data;
     //転生や養子の場合の元の職業を算出する
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     item = sd->inventory_data[n];
     sc_data = battle_get_sc_data(sd);
@@ -629,7 +629,7 @@ int pc_isequip(dumb_ptr<map_session_data> sd, IOff0 n)
     if (gm_all_equipment && pc_isGM(sd).satisfies(gm_all_equipment))
         return 1;
 
-    if (item == NULL)
+    if (item == nullptr)
         return 0;
     if (item->sex != SEX::NEUTRAL && sd->status.sex != item->sex)
         return 0;
@@ -647,13 +647,13 @@ int pc_isequip(dumb_ptr<map_session_data> sd, IOff0 n)
 int pc_authok(AccountId id, int login_id2, TimeT connect_until_time,
         short tmw_version, const CharKey *st_key, const CharData *st_data)
 {
-    dumb_ptr<map_session_data> sd = NULL;
+    dumb_ptr<map_session_data> sd = nullptr;
 
     PartyPair p;
     tick_t tick = gettick();
 
     sd = map_id2sd(account_to_block(id));
-    if (sd == NULL)
+    if (sd == nullptr)
         return 1;
 
     sd->login_id2 = login_id2;
@@ -675,7 +675,7 @@ int pc_authok(AccountId id, int login_id2, TimeT connect_until_time,
     really_memzero_this(&sd->state);
     // 基本的な初期化
     sd->state.connect_new = 1;
-    sd->bl_prev = sd->bl_next = NULL;
+    sd->bl_prev = sd->bl_next = nullptr;
 
     sd->weapontype1 = sd->weapontype2 = ItemLook::NONE;
     sd->speed = DEFAULT_WALK_SPEED;
@@ -846,7 +846,7 @@ int pc_authfail(AccountId id)
     dumb_ptr<map_session_data> sd;
 
     sd = map_id2sd(account_to_block(id));
-    if (sd == NULL)
+    if (sd == nullptr)
         return 1;
 
     clif_authfail_fd(sd->sess, 0);
@@ -859,7 +859,7 @@ int pc_calc_skillpoint(dumb_ptr<map_session_data> sd)
 {
     int i, skill_points = 0;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     for (i = 0; i < skill_pool_skills_size; i++) {
         int lv = sd->status.skill[skill_pool_skills[i]].lv;
@@ -878,7 +878,7 @@ int pc_checkweighticon(dumb_ptr<map_session_data> sd)
 {
     int flag = 0;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (sd->weight * 2 >= sd->max_weight
         && !sd->sc_data[StatusChange::SC_FLYING_BACKPACK].timer)
@@ -937,7 +937,7 @@ int pc_calcstatus(dumb_ptr<map_session_data> sd, int first)
     int aspd_rate, refinedef = 0;
     int str, dstr, dex;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     interval_t b_speed = sd->speed;
     b_max_hp = sd->status.max_hp;
@@ -973,7 +973,7 @@ int pc_calcstatus(dumb_ptr<map_session_data> sd, int first)
         for (IOff0 i : IOff0::iter())
         {
             if (!sd->status.inventory[i].nameid
-                || sd->inventory_data[i] == NULL)
+                || sd->inventory_data[i] == nullptr)
                 continue;
             sd->weight +=
                 sd->inventory_data[i]->weight *
@@ -1484,7 +1484,7 @@ int pc_calcstatus(dumb_ptr<map_session_data> sd, int first)
  */
 int pc_bonus(dumb_ptr<map_session_data> sd, SP type, int val)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     switch (type)
     {
@@ -1749,7 +1749,7 @@ int pc_bonus(dumb_ptr<map_session_data> sd, SP type, int val)
  */
 int pc_bonus2(dumb_ptr<map_session_data> sd, SP type, int type2, int val)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     switch (type)
     {
@@ -1794,7 +1794,7 @@ int pc_bonus2(dumb_ptr<map_session_data> sd, SP type, int type2, int val)
  */
 int pc_skill(dumb_ptr<map_session_data> sd, SkillID id, int level, int flag)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (level > MAX_SKILL_LEVEL)
     {
@@ -1852,7 +1852,7 @@ int pc_inventoryblank(dumb_ptr<map_session_data> sd)
 {
     int b = 0;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     for (IOff0 i : IOff0::iter())
     {
@@ -1869,7 +1869,7 @@ int pc_inventoryblank(dumb_ptr<map_session_data> sd)
  */
 int pc_payzeny(dumb_ptr<map_session_data> sd, int zeny)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     double z = sd->status.zeny;
     if (sd->status.zeny < zeny || z - zeny > MAX_ZENY)
@@ -1886,7 +1886,7 @@ int pc_payzeny(dumb_ptr<map_session_data> sd, int zeny)
  */
 int pc_getzeny(dumb_ptr<map_session_data> sd, int zeny)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     double z = sd->status.zeny;
     if (z + zeny > MAX_ZENY)
@@ -1922,7 +1922,7 @@ int pc_count_all_items(dumb_ptr<map_session_data> player, ItemNameId item_id)
 {
     int count = 0;
 
-    nullpo_ret(player);
+    nullpo_retz(player);
 
     for (IOff0 i : IOff0::iter())
     {
@@ -1935,7 +1935,7 @@ int pc_count_all_items(dumb_ptr<map_session_data> player, ItemNameId item_id)
 
 int pc_remove_items(dumb_ptr<map_session_data> player, ItemNameId item_id, int count)
 {
-    nullpo_ret(player);
+    nullpo_retz(player);
 
     for (IOff0 i : IOff0::iter())
     {
@@ -2034,7 +2034,7 @@ int pc_delitem(dumb_ptr<map_session_data> sd, IOff0 n, int amount, int type)
 
     if (!sd->status.inventory[n].nameid || amount <= 0
         || sd->status.inventory[n].amount < amount
-        || sd->inventory_data[n] == NULL)
+        || sd->inventory_data[n] == nullptr)
         return 1;
 
     sd->status.inventory[n].amount -= amount;
@@ -2044,7 +2044,7 @@ int pc_delitem(dumb_ptr<map_session_data> sd, IOff0 n, int amount, int type)
         if (bool(sd->status.inventory[n].equip))
             pc_unequipitem(sd, n, CalcStatus::NOW);
         sd->status.inventory[n] = Item{};
-        sd->inventory_data[n] = NULL;
+        sd->inventory_data[n] = nullptr;
     }
     if (!(type & 1))
         clif_delitem(sd, n, amount);
@@ -2079,7 +2079,7 @@ int pc_dropitem(dumb_ptr<map_session_data> sd, IOff0 n, int amount)
         return 1;
     map_addflooritem(&sd->status.inventory[n], amount,
             sd->bl_m, sd->bl_x, sd->bl_y,
-            NULL, NULL, NULL);
+            nullptr, nullptr, nullptr);
     pc_delitem(sd, n, amount, 0);
 
     return 0;
@@ -2134,8 +2134,8 @@ int pc_takeitem(dumb_ptr<map_session_data> sd, dumb_ptr<flooritem_data> fitem)
     tick_t tick = gettick();
     int can_take;
 
-    nullpo_ret(sd);
-    nullpo_ret(fitem);
+    nullpo_retz(sd);
+    nullpo_retz(fitem);
 
     /* Sometimes the owners reported to us are buggy: */
 
@@ -2191,12 +2191,12 @@ int pc_isUseitem(dumb_ptr<map_session_data> sd, IOff0 n)
     struct item_data *item;
     ItemNameId nameid;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     item = sd->inventory_data[n];
     nameid = sd->status.inventory[n].nameid;
 
-    if (item == NULL)
+    if (item == nullptr)
         return 0;
     if (itemdb_type(nameid) != ItemType::USE)
         return 0;
@@ -2252,7 +2252,7 @@ int pc_setpos(dumb_ptr<map_session_data> sd,
 {
     MapName mapname_;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (sd->trade_partner)      // 取引を中断する
         trade_tradecancel(sd);
@@ -2325,7 +2325,7 @@ int pc_setpos(dumb_ptr<map_session_data> sd,
         while (bool(read_gatp(m, x, y) & MapCell::UNWALKABLE));
     }
 
-    if (sd->mapname_ && sd->bl_prev != NULL)
+    if (sd->mapname_ && sd->bl_prev != nullptr)
     {
         clif_clearchar(sd, clrtype);
         map_delblock(sd);
@@ -2356,7 +2356,7 @@ int pc_randomwarp(dumb_ptr<map_session_data> sd, BeingRemoveWhy type)
 {
     int x, y, i = 0;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     map_local *m = sd->bl_m;
 
@@ -2386,7 +2386,7 @@ int pc_can_reach(dumb_ptr<map_session_data> sd, int x, int y)
 {
     struct walkpath_data wpd;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (sd->bl_x == x && sd->bl_y == y) // 同じマス
         return 1;
@@ -2430,7 +2430,7 @@ void pc_walk(TimerData *, tick_t tick, BlockId id, unsigned char data)
     int x, y, dx, dy;
 
     sd = map_id2sd(id);
-    if (sd == NULL)
+    if (sd == nullptr)
         return;
 
     if (sd->walkpath.path_pos >= sd->walkpath.path_len
@@ -2571,7 +2571,7 @@ int pc_walktoxy_sub(dumb_ptr<map_session_data> sd)
 int pc_walktoxy(dumb_ptr<map_session_data> sd, int x, int y)
 {
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     sd->to_x = x;
     sd->to_y = y;
@@ -2599,7 +2599,7 @@ int pc_walktoxy(dumb_ptr<map_session_data> sd, int x, int y)
  */
 int pc_stop_walking(dumb_ptr<map_session_data> sd, int type)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     sd->walktimer.cancel();
 
@@ -2638,7 +2638,7 @@ int pc_movepos(dumb_ptr<map_session_data> sd, int dst_x, int dst_y)
 
     struct walkpath_data wpd;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (path_search(&wpd, sd->bl_m, sd->bl_x, sd->bl_y, dst_x, dst_y, 0))
         return 1;
@@ -2702,7 +2702,7 @@ int pc_movepos(dumb_ptr<map_session_data> sd, int dst_x, int dst_y)
  */
 int pc_checkskill(dumb_ptr<map_session_data> sd, SkillID skill_id)
 {
-    if (sd == NULL)
+    if (sd == nullptr)
         return 0;
 
     return sd->status.skill[skill_id].lv;
@@ -2738,14 +2738,14 @@ void pc_attack_timer(TimerData *, tick_t tick, BlockId id)
     int dist, range;
 
     sd = map_id2sd(id);
-    if (sd == NULL)
+    if (sd == nullptr)
         return;
 
-    if (sd->bl_prev == NULL)
+    if (sd->bl_prev == nullptr)
         return;
 
     bl = map_id2bl(sd->attacktarget);
-    if (bl == NULL || bl->bl_prev == NULL)
+    if (bl == nullptr || bl->bl_prev == nullptr)
         return;
 
     if (bl->bl_type == BL::PC && pc_isdead(bl->is_player()))
@@ -2761,7 +2761,7 @@ void pc_attack_timer(TimerData *, tick_t tick, BlockId id)
         return;
 
     Option *opt = battle_get_option(bl);
-    if (opt != NULL && bool(*opt & Option::REAL_ANY_HIDE))
+    if (opt != nullptr && bool(*opt & Option::REAL_ANY_HIDE))
         return;
 
     if (!battle_config.skill_delay_attack_enable)
@@ -2841,10 +2841,10 @@ int pc_attack(dumb_ptr<map_session_data> sd, BlockId target_id, int type)
 {
     dumb_ptr<block_list> bl;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     bl = map_id2bl(target_id);
-    if (bl == NULL)
+    if (bl == nullptr)
         return 1;
 
     if (bl->bl_type == BL::NPC)
@@ -2882,7 +2882,7 @@ int pc_attack(dumb_ptr<map_session_data> sd, BlockId target_id, int type)
  */
 int pc_stopattack(dumb_ptr<map_session_data> sd)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     sd->attacktimer.cancel();
 
@@ -2897,7 +2897,7 @@ int pc_checkbaselevelup(dumb_ptr<map_session_data> sd)
 {
     int next = pc_nextbaseexp(sd);
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (sd->status.base_exp >= next && next > 0)
     {
@@ -2952,7 +2952,7 @@ int pc_checkjoblevelup(dumb_ptr<map_session_data> sd)
 {
     int next = pc_nextjobexp(sd);
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (sd->status.job_exp >= next && next > 0)
     {
@@ -2987,9 +2987,9 @@ int pc_checkjoblevelup(dumb_ptr<map_session_data> sd)
 int pc_gainexp_reason(dumb_ptr<map_session_data> sd, int base_exp, int job_exp,
         PC_GAINEXP_REASON reason)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
-    if (sd->bl_prev == NULL || pc_isdead(sd))
+    if (sd->bl_prev == nullptr || pc_isdead(sd))
         return 0;
 
     earray<LString, PC_GAINEXP_REASON, PC_GAINEXP_REASON::COUNT> reasons //=
@@ -3065,7 +3065,7 @@ int pc_gainexp_reason(dumb_ptr<map_session_data> sd, int base_exp, int job_exp,
 int pc_extract_healer_exp(dumb_ptr<map_session_data> sd, int max)
 {
     int amount;
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     amount = sd->heal_xp;
     if (max < amount)
@@ -3081,7 +3081,7 @@ int pc_extract_healer_exp(dumb_ptr<map_session_data> sd, int max)
  */
 int pc_nextbaseexp(dumb_ptr<map_session_data> sd)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (sd->status.base_level >= MAX_LEVEL || sd->status.base_level <= 0)
         return 0;
@@ -3109,7 +3109,7 @@ int pc_nextjobexp(dumb_ptr<map_session_data> sd)
  */
 int pc_nextbaseafter(dumb_ptr<map_session_data> sd)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (sd->status.base_level >= MAX_LEVEL || sd->status.base_level <= 0)
         return 0;
@@ -3123,7 +3123,7 @@ int pc_nextbaseafter(dumb_ptr<map_session_data> sd)
  */
 int pc_nextjobafter(dumb_ptr<map_session_data> sd)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (sd->status.job_level >= MAX_LEVEL || sd->status.job_level <= 0)
         return 0;
@@ -3157,7 +3157,7 @@ int pc_statusup(dumb_ptr<map_session_data> sd, SP type)
 {
     int need, val = 0;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (SP::STR <= type && type <= SP::LUK)
         val = sd->status.attrs[sp_to_attr(type)];
@@ -3193,7 +3193,7 @@ int pc_statusup(dumb_ptr<map_session_data> sd, SP type)
  */
 int pc_statusup2(dumb_ptr<map_session_data> sd, SP type, int val)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (type < SP::STR || type > SP::LUK)
     {
@@ -3220,7 +3220,7 @@ int pc_statusup2(dumb_ptr<map_session_data> sd, SP type, int val)
  */
 int pc_skillup(dumb_ptr<map_session_data> sd, SkillID skill_num)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (sd->status.skill[skill_num].lv
         && sd->status.skill_point >= sd->status.skill[skill_num].lv
@@ -3247,7 +3247,7 @@ int pc_skillup(dumb_ptr<map_session_data> sd, SkillID skill_num)
  */
 int pc_resetlvl(dumb_ptr<map_session_data> sd, int type)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     for (SkillID i : erange(SkillID(1), MAX_SKILL))
     {
@@ -3336,7 +3336,7 @@ int pc_resetlvl(dumb_ptr<map_session_data> sd, int type)
 int pc_resetstate(dumb_ptr<map_session_data> sd)
 {
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     sd->status.status_point = stat_p[sd->status.base_level - 1];
 
@@ -3362,7 +3362,7 @@ int pc_resetskill(dumb_ptr<map_session_data> sd)
 {
     int skill;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     sd->status.skill_point += pc_calc_skillpoint(sd);
 
@@ -3387,7 +3387,7 @@ int pc_resetskill(dumb_ptr<map_session_data> sd)
 int pc_damage(dumb_ptr<block_list> src, dumb_ptr<map_session_data> sd,
                int damage)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     // 既に死んでいたら無効
     if (pc_isdead(sd))
@@ -3564,7 +3564,7 @@ int pc_readparam(dumb_ptr<map_session_data> sd, SP type)
 {
     int val = 0;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     switch (type)
     {
@@ -3640,7 +3640,7 @@ int pc_setparam(dumb_ptr<map_session_data> sd, SP type, int val)
 {
     int i = 0, up_level = 50;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     switch (type)
     {
@@ -3759,7 +3759,7 @@ int pc_setparam(dumb_ptr<map_session_data> sd, SP type, int val)
  */
 int pc_heal(dumb_ptr<map_session_data> sd, int hp, int sp)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (pc_checkoverhp(sd))
     {
@@ -3780,7 +3780,7 @@ int pc_heal(dumb_ptr<map_session_data> sd, int hp, int sp)
     if (sd->status.hp <= 0)
     {
         sd->status.hp = 0;
-        pc_damage(NULL, sd, 1);
+        pc_damage(nullptr, sd, 1);
         hp = 0;
     }
     sd->status.sp += sp;
@@ -3878,7 +3878,7 @@ int pc_itemheal(dumb_ptr<map_session_data> sd, int hp, int sp)
 static
 int pc_itemheal_effect(dumb_ptr<map_session_data> sd, int hp, int sp)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (pc_checkoverhp(sd))
     {
@@ -3908,7 +3908,7 @@ int pc_itemheal_effect(dumb_ptr<map_session_data> sd, int hp, int sp)
     if (sd->status.hp <= 0)
     {
         sd->status.hp = 0;
-        pc_damage(NULL, sd, 1);
+        pc_damage(nullptr, sd, 1);
         hp = 0;
     }
     sd->status.sp += sp;
@@ -3928,7 +3928,7 @@ int pc_itemheal_effect(dumb_ptr<map_session_data> sd, int hp, int sp)
  */
 int pc_percentheal(dumb_ptr<map_session_data> sd, int hp, int sp)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (pc_checkoverhp(sd))
     {
@@ -3949,7 +3949,7 @@ int pc_percentheal(dumb_ptr<map_session_data> sd, int hp, int sp)
         else if (hp <= -100)
         {
             sd->status.hp = 0;
-            pc_damage(NULL, sd, 1);
+            pc_damage(nullptr, sd, 1);
         }
         else
         {
@@ -3959,7 +3959,7 @@ int pc_percentheal(dumb_ptr<map_session_data> sd, int hp, int sp)
             if (sd->status.hp <= 0)
             {
                 sd->status.hp = 0;
-                pc_damage(NULL, sd, 1);
+                pc_damage(nullptr, sd, 1);
                 hp = 0;
             }
         }
@@ -4002,7 +4002,7 @@ int pc_percentheal(dumb_ptr<map_session_data> sd, int hp, int sp)
  */
 int pc_changelook(dumb_ptr<map_session_data> sd, LOOK type, int val)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     switch (type)
     {
@@ -4044,7 +4044,7 @@ int pc_changelook(dumb_ptr<map_session_data> sd, LOOK type, int val)
  */
 int pc_setoption(dumb_ptr<map_session_data> sd, Option type)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     sd->status.option = type;
     clif_changeoption(sd);
@@ -4059,7 +4059,7 @@ int pc_setoption(dumb_ptr<map_session_data> sd, Option type)
  */
 int pc_readreg(dumb_ptr<map_session_data> sd, SIR reg)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     return sd->regm.get(reg);
 }
@@ -4115,7 +4115,7 @@ int pc_readglobalreg(dumb_ptr<map_session_data> sd, VarName reg)
 {
     int i;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     assert (sd->status.global_reg_num < GLOBAL_REG_NUM);
     for (i = 0; i < sd->status.global_reg_num; i++)
@@ -4135,7 +4135,7 @@ int pc_setglobalreg(dumb_ptr<map_session_data> sd, VarName reg, int val)
 {
     int i;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     //PC_DIE_COUNTERがスクリプトなどで変更された時の処理
     if (reg == stringish<VarName>("PC_DIE_COUNTER"_s) && sd->die_counter != val)
@@ -4188,7 +4188,7 @@ int pc_readaccountreg(dumb_ptr<map_session_data> sd, VarName reg)
 {
     int i;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     assert (sd->status.account_reg_num < ACCOUNT_REG_NUM);
     for (i = 0; i < sd->status.account_reg_num; i++)
@@ -4208,7 +4208,7 @@ int pc_setaccountreg(dumb_ptr<map_session_data> sd, VarName reg, int val)
 {
     int i;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (val == 0)
     {
@@ -4257,7 +4257,7 @@ int pc_readaccountreg2(dumb_ptr<map_session_data> sd, VarName reg)
 {
     int i;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     for (i = 0; i < sd->status.account_reg2_num; i++)
     {
@@ -4325,7 +4325,7 @@ static
 void pc_eventtimer(TimerData *, tick_t, BlockId id, NpcEvent data)
 {
     dumb_ptr<map_session_data> sd = map_id2sd(id);
-    assert (sd != NULL);
+    assert (sd != nullptr);
 
     npc_event(sd, data, 0);
 }
@@ -4338,7 +4338,7 @@ int pc_addeventtimer(dumb_ptr<map_session_data> sd, interval_t tick, NpcEvent na
 {
     int i;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     for (i = 0; i < MAX_EVENTTIMER; i++)
         if (!sd->eventtimer[i])
@@ -4361,7 +4361,7 @@ int pc_addeventtimer(dumb_ptr<map_session_data> sd, interval_t tick, NpcEvent na
  */
 int pc_cleareventtimer(dumb_ptr<map_session_data> sd)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     for (int i = 0; i < MAX_EVENTTIMER; i++)
         sd->eventtimer[i].cancel();
@@ -4398,7 +4398,7 @@ int pc_equipitem(dumb_ptr<map_session_data> sd, IOff0 n, EPOS)
     struct item_data *id;
     //ｿｽ]ｿｽｿｽｿｽｿｽｿｽ{ｿｽqｿｽﾌ場合ｿｽﾌ鯉ｿｽｿｽﾌ職ｿｽﾆゑｿｽｿｽZｿｽoｿｽｿｽｿｽｿｽ
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (!n.ok())
     {
@@ -4540,7 +4540,7 @@ int pc_equipitem(dumb_ptr<map_session_data> sd, IOff0 n, EPOS)
  */
 int pc_unequipitem(dumb_ptr<map_session_data> sd, IOff0 n, CalcStatus type)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
 // -- moonsoul  (if player is berserk then cannot unequip)
 //
@@ -4629,7 +4629,7 @@ int pc_checkitem(dumb_ptr<map_session_data> sd)
 {
     int calc_flag = 0;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     IOff0 j = IOff0::from(0);
     for (IOff0 i : IOff0::iter())
@@ -4646,7 +4646,7 @@ int pc_checkitem(dumb_ptr<map_session_data> sd)
     for (IOff0 k = j; k != IOff0::from(MAX_INVENTORY); ++k)
     {
         sd->status.inventory[k] = Item{};
-        sd->inventory_data[k] = NULL;
+        sd->inventory_data[k] = nullptr;
     }
 
     for (IOff0 i : IOff0::iter())
@@ -4669,7 +4669,7 @@ int pc_checkitem(dumb_ptr<map_session_data> sd)
 
 int pc_checkoverhp(dumb_ptr<map_session_data> sd)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (sd->status.hp == sd->status.max_hp)
         return 1;
@@ -4685,7 +4685,7 @@ int pc_checkoverhp(dumb_ptr<map_session_data> sd)
 
 int pc_checkoversp(dumb_ptr<map_session_data> sd)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (sd->status.sp == sd->status.max_sp)
         return 1;
@@ -4722,9 +4722,9 @@ void pc_calc_pvprank_sub(dumb_ptr<block_list> bl, dumb_ptr<map_session_data> sd2
  */
 int pc_calc_pvprank(dumb_ptr<map_session_data> sd)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
     map_local *m = sd->bl_m;
-    nullpo_ret(m);
+    nullpo_retz(m);
 
     if (!(m->flag.get(MapFlag::PVP)))
         return 0;
@@ -4743,12 +4743,12 @@ int pc_calc_pvprank(dumb_ptr<map_session_data> sd)
  */
 void pc_calc_pvprank_timer(TimerData *, tick_t, BlockId id)
 {
-    dumb_ptr<map_session_data> sd = NULL;
+    dumb_ptr<map_session_data> sd = nullptr;
     if (battle_config.pk_mode)  // disable pvp ranking if pk_mode on [Valaris]
         return;
 
     sd = map_id2sd(id);
-    if (sd == NULL)
+    if (sd == nullptr)
         return;
     sd->pvp_timer.cancel();
     if (pc_calc_pvprank(sd) > 0)
@@ -4764,7 +4764,7 @@ void pc_calc_pvprank_timer(TimerData *, tick_t, BlockId id)
 static
 CharId pc_ismarried(dumb_ptr<map_session_data> sd)
 {
-    if (sd == NULL)
+    if (sd == nullptr)
         return CharId();
     if (sd->status.partner_id)
         return sd->status.partner_id;
@@ -4778,7 +4778,7 @@ CharId pc_ismarried(dumb_ptr<map_session_data> sd)
  */
 int pc_marriage(dumb_ptr<map_session_data> sd, dumb_ptr<map_session_data> dstsd)
 {
-    if (sd == NULL || dstsd == NULL || sd->status.partner_id
+    if (sd == nullptr || dstsd == nullptr || sd->status.partner_id
         || dstsd->status.partner_id)
         return -1;
     sd->status.partner_id = dstsd->status_key.char_id;
@@ -4792,13 +4792,13 @@ int pc_marriage(dumb_ptr<map_session_data> sd, dumb_ptr<map_session_data> dstsd)
  */
 int pc_divorce(dumb_ptr<map_session_data> sd)
 {
-    dumb_ptr<map_session_data> p_sd = NULL;
-    if (sd == NULL || !pc_ismarried(sd))
+    dumb_ptr<map_session_data> p_sd = nullptr;
+    if (sd == nullptr || !pc_ismarried(sd))
         return -1;
 
     // If both are on map server we don't need to bother the char server
     if ((p_sd =
-         map_nick2sd(map_charid2nick(sd->status.partner_id))) != NULL)
+         map_nick2sd(map_charid2nick(sd->status.partner_id))) != nullptr)
     {
         if (p_sd->status.partner_id != sd->status_key.char_id
             || sd->status.partner_id != p_sd->status_key.char_id)
@@ -4828,17 +4828,17 @@ int pc_divorce(dumb_ptr<map_session_data> sd)
  */
 dumb_ptr<map_session_data> pc_get_partner(dumb_ptr<map_session_data> sd)
 {
-    dumb_ptr<map_session_data> p_sd = NULL;
-    if (sd == NULL || !pc_ismarried(sd))
-        return NULL;
+    dumb_ptr<map_session_data> p_sd = nullptr;
+    if (sd == nullptr || !pc_ismarried(sd))
+        return nullptr;
 
     CharName nick = map_charid2nick(sd->status.partner_id);
 
     if (!nick.to__actual())
-        return NULL;
+        return nullptr;
 
-    if ((p_sd = map_nick2sd(nick)) == NULL)
-        return NULL;
+    if ((p_sd = map_nick2sd(nick)) == nullptr)
+        return nullptr;
 
     return p_sd;
 }
@@ -4889,7 +4889,7 @@ int pc_natural_heal_hp(dumb_ptr<map_session_data> sd)
     int bhp;
     int bonus;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (pc_checkoverhp(sd))
     {
@@ -4961,7 +4961,7 @@ int pc_natural_heal_sp(dumb_ptr<map_session_data> sd)
     int bsp;
     int bonus;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (pc_checkoversp(sd))
     {
diff --git a/src/map/script.cpp b/src/map/script.cpp
index 73ddea7..b9d90ea 100644
--- a/src/map/script.cpp
+++ b/src/map/script.cpp
@@ -986,7 +986,7 @@ void get_val(dumb_ptr<map_session_data> sd, struct script_data *data)
 {
     if (data->type == ByteCode::PARAM_)
     {
-        if (sd == NULL)
+        if (sd == nullptr)
             PRINTF("get_val error param SP::%d\n"_fmt, data->u.reg.sp());
         data->type = ByteCode::INT;
         if (sd)
@@ -1001,7 +1001,7 @@ void get_val(dumb_ptr<map_session_data> sd, struct script_data *data)
 
         if (prefix != '$')
         {
-            if (sd == NULL)
+            if (sd == nullptr)
                 PRINTF("get_val error name?:%s\n"_fmt, name);
         }
         if (postfix == '$')
@@ -1664,7 +1664,7 @@ void builtin_percentheal(ScriptState *st)
 static
 void builtin_input(ScriptState *st)
 {
-    dumb_ptr<map_session_data> sd = NULL;
+    dumb_ptr<map_session_data> sd = nullptr;
     script_data& scrd = AARGO2(2);
     ByteCode type = scrd.type;
     assert (type == ByteCode::VARIABLE);
@@ -1741,7 +1741,7 @@ void builtin_if (ScriptState *st)
 static
 void builtin_set(ScriptState *st)
 {
-    dumb_ptr<map_session_data> sd = NULL;
+    dumb_ptr<map_session_data> sd = nullptr;
     SIR reg = AARGO2(2).u.reg;
     if (AARGO2(2).type == ByteCode::PARAM_)
     {
@@ -1782,7 +1782,7 @@ void builtin_set(ScriptState *st)
 static
 void builtin_setarray(ScriptState *st)
 {
-    dumb_ptr<map_session_data> sd = NULL;
+    dumb_ptr<map_session_data> sd = nullptr;
     assert (AARGO2(2).type == ByteCode::VARIABLE);
     SIR reg = AARGO2(2).u.reg;
     ZString name = variable_names.outtern(reg.base());
@@ -1813,7 +1813,7 @@ void builtin_setarray(ScriptState *st)
 static
 void builtin_cleararray(ScriptState *st)
 {
-    dumb_ptr<map_session_data> sd = NULL;
+    dumb_ptr<map_session_data> sd = nullptr;
     assert (AARGO2(2).type == ByteCode::VARIABLE);
     SIR reg = AARGO2(2).u.reg;
     ZString name = variable_names.outtern(reg.base());
@@ -1939,7 +1939,7 @@ void builtin_countitem(ScriptState *st)
     {
         ZString name = ZString(conv_str(st, data));
         struct item_data *item_data = itemdb_searchname(name);
-        if (item_data != NULL)
+        if (item_data != nullptr)
             nameid = item_data->nameid;
     }
     else
@@ -2027,7 +2027,7 @@ void builtin_getitem(ScriptState *st)
     {
         ZString name = ZString(conv_str(st, data));
         struct item_data *item_data = itemdb_searchname(name);
-        if (item_data != NULL)
+        if (item_data != nullptr)
             nameid = item_data->nameid;
     }
     else
@@ -2045,7 +2045,7 @@ void builtin_getitem(ScriptState *st)
         item_tmp.nameid = nameid;
         if (HARGO2(5))    //アイテムを指定したIDに渡す
             sd = map_id2sd(wrap<BlockId>(conv_num(st, &AARGO2(5))));
-        if (sd == NULL)         //アイテムを渡す相手がいなかったらお帰り
+        if (sd == nullptr)         //アイテムを渡す相手がいなかったらお帰り
             return;
         PickupFail flag;
         if ((flag = pc_additem(sd, &item_tmp, amount)) != PickupFail::OKAY)
@@ -2053,7 +2053,7 @@ void builtin_getitem(ScriptState *st)
             clif_additem(sd, IOff0::from(0), 0, flag);
             map_addflooritem(&item_tmp, amount,
                     sd->bl_m, sd->bl_x, sd->bl_y,
-                    NULL, NULL, NULL);
+                    nullptr, nullptr, nullptr);
         }
     }
 
@@ -2102,7 +2102,7 @@ void builtin_makeitem(ScriptState *st)
         Item item_tmp {};
         item_tmp.nameid = nameid;
 
-        map_addflooritem(&item_tmp, amount, m, x, y, NULL, NULL, NULL);
+        map_addflooritem(&item_tmp, amount, m, x, y, nullptr, nullptr, nullptr);
     }
 }
 
@@ -2177,7 +2177,7 @@ void builtin_readparam(ScriptState *st)
     else
         sd = script_rid2sd(st);
 
-    if (sd == NULL)
+    if (sd == nullptr)
     {
         push_int(st->stack, ByteCode::INT, -1);
         return;
@@ -2202,7 +2202,7 @@ void builtin_getcharid(ScriptState *st)
         sd = map_nick2sd(stringish<CharName>(ZString(conv_str(st, &AARGO2(3)))));
     else
         sd = script_rid2sd(st);
-    if (sd == NULL)
+    if (sd == nullptr)
     {
         push_int(st->stack, ByteCode::INT, -1);
         return;
@@ -2295,9 +2295,9 @@ void builtin_getequipid(ScriptState *st)
     struct item_data *item;
 
     sd = script_rid2sd(st);
-    if (sd == NULL)
+    if (sd == nullptr)
     {
-        PRINTF("getequipid: sd == NULL\n"_fmt);
+        PRINTF("getequipid: sd == nullptr\n"_fmt);
         return;
     }
     num = conv_num(st, &AARGO2(2));
@@ -3040,7 +3040,7 @@ void builtin_getareadropitem_sub_anddelete(dumb_ptr<block_list> bl, ItemNameId i
     if (drop->item_data.nameid == item)
     {
         (*amount) += drop->item_data.amount;
-        clif_clearflooritem(drop, 0);
+        clif_clearflooritem(drop, nullptr);
         map_delobject(drop->bl_id, drop->bl_type);
     }
 }
@@ -3200,7 +3200,7 @@ void builtin_resetstatus(ScriptState *st)
 static
 void builtin_changesex(ScriptState *st)
 {
-    dumb_ptr<map_session_data> sd = NULL;
+    dumb_ptr<map_session_data> sd = nullptr;
     sd = script_rid2sd(st);
 
     chrif_char_ask_name(AccountId(), sd->status_key.name, 5, HumanTimeDiff()); // type: 5 - changesex
@@ -3215,7 +3215,7 @@ static
 void builtin_attachrid(ScriptState *st)
 {
     st->rid = wrap<BlockId>(conv_num(st, &AARGO2(2)));
-    push_int(st->stack, ByteCode::INT, (map_id2sd(st->rid) != NULL));
+    push_int(st->stack, ByteCode::INT, (map_id2sd(st->rid) != nullptr));
 }
 
 /*==========================================
@@ -3236,7 +3236,7 @@ static
 void builtin_isloggedin(ScriptState *st)
 {
     push_int(st->stack, ByteCode::INT,
-              map_id2sd(wrap<BlockId>(conv_num(st, &AARGO2(2)))) != NULL);
+              map_id2sd(wrap<BlockId>(conv_num(st, &AARGO2(2)))) != nullptr);
 }
 
 static
@@ -3436,7 +3436,7 @@ void builtin_marriage(ScriptState *st)
     dumb_ptr<map_session_data> sd = script_rid2sd(st);
     dumb_ptr<map_session_data> p_sd = map_nick2sd(partner);
 
-    if (sd == NULL || p_sd == NULL || pc_marriage(sd, p_sd) < 0)
+    if (sd == nullptr || p_sd == nullptr || pc_marriage(sd, p_sd) < 0)
     {
         push_int(st->stack, ByteCode::INT, 0);
         return;
@@ -3453,7 +3453,7 @@ void builtin_divorce(ScriptState *st)
 
     sd->npc_flags.divorce = 1;
 
-    if (sd == NULL || pc_divorce(sd) < 0)
+    if (sd == nullptr || pc_divorce(sd) < 0)
     {
         push_int(st->stack, ByteCode::INT, 0);
         return;
@@ -3643,7 +3643,7 @@ void builtin_misceffect(ScriptState *st)
     int type;
     BlockId id;
     CharName name;
-    dumb_ptr<block_list> bl = NULL;
+    dumb_ptr<block_list> bl = nullptr;
 
     type = conv_num(st, &AARGO2(2));
 
@@ -3690,7 +3690,7 @@ void builtin_specialeffect(ScriptState *st)
 {
     dumb_ptr<block_list> bl = map_id2bl(st->oid);
 
-    if (bl == NULL)
+    if (bl == nullptr)
         return;
 
     clif_specialeffect(bl,
@@ -3705,7 +3705,7 @@ void builtin_specialeffect2(ScriptState *st)
 {
     dumb_ptr<map_session_data> sd = script_rid2sd(st);
 
-    if (sd == NULL)
+    if (sd == nullptr)
         return;
 
     clif_specialeffect(sd,
@@ -3725,7 +3725,7 @@ void builtin_nude(ScriptState *st)
 {
     dumb_ptr<map_session_data> sd = script_rid2sd(st);
 
-    if (sd == NULL)
+    if (sd == nullptr)
         return;
 
     for (EQUIP i : EQUIPs)
@@ -3747,7 +3747,7 @@ static
 void builtin_unequipbyid(ScriptState *st)
 {
     dumb_ptr<map_session_data> sd = script_rid2sd(st);
-    if (sd == NULL)
+    if (sd == nullptr)
         return;
 
     EQUIP slot_id = EQUIP(conv_num(st, &AARGO2(2)));
@@ -3791,7 +3791,7 @@ static
 void builtin_npcwarp(ScriptState *st)
 {
     int x, y;
-    dumb_ptr<npc_data> nd = NULL;
+    dumb_ptr<npc_data> nd = nullptr;
 
     x = conv_num(st, &AARGO2(2));
     y = conv_num(st, &AARGO2(3));
@@ -3833,7 +3833,7 @@ void builtin_message(ScriptState *st)
     ZString msg = ZString(conv_str(st, &AARGO2(3)));
 
     dumb_ptr<map_session_data> pl_sd = map_nick2sd(player);
-    if (pl_sd == NULL)
+    if (pl_sd == nullptr)
         return;
     clif_displaymessage(pl_sd->sess, msg);
 
@@ -4773,7 +4773,7 @@ int run_script_l(ScriptPointer sp, BlockId rid, BlockId oid,
     dumb_ptr<map_session_data> sd = map_id2sd(rid);
     const ScriptBuffer *rootscript = sp.code;
     int i;
-    if (sp.code == NULL || sp.pos >> 24)
+    if (sp.code == nullptr || sp.pos >> 24)
         return -1;
 
     if (sd && !sd->npc_stackbuf.empty() && sd->npc_scriptroot == rootscript)
diff --git a/src/map/skill-pools.cpp b/src/map/skill-pools.cpp
index bab89a1..3e9639a 100644
--- a/src/map/skill-pools.cpp
+++ b/src/map/skill-pools.cpp
@@ -62,7 +62,7 @@ int skill_pool(dumb_ptr<map_session_data> sd, SkillID *skills)
 
 int skill_pool_size(dumb_ptr<map_session_data> sd)
 {
-    return skill_pool(sd, NULL);
+    return skill_pool(sd, nullptr);
 }
 
 int skill_pool_max(dumb_ptr<map_session_data> sd)
diff --git a/src/map/skill.cpp b/src/map/skill.cpp
index ad8e2e7..e8ad878 100644
--- a/src/map/skill.cpp
+++ b/src/map/skill.cpp
@@ -170,16 +170,16 @@ int skill_get_castnodex(SkillID id, int lv)
 int skill_additional_effect(dumb_ptr<block_list> src, dumb_ptr<block_list> bl,
         SkillID skillid, int skilllv)
 {
-    dumb_ptr<map_session_data> sd = NULL;
-    dumb_ptr<mob_data> md = NULL;
+    dumb_ptr<map_session_data> sd = nullptr;
+    dumb_ptr<mob_data> md = nullptr;
 
     int luk;
 
     int sc_def_mdef, sc_def_vit, sc_def_int, sc_def_luk;
     int sc_def_phys_shield_spell;
 
-    nullpo_ret(src);
-    nullpo_ret(bl);
+    nullpo_retz(src);
+    nullpo_retz(bl);
 
     if (skilllv < 0)
         return 0;
@@ -257,16 +257,16 @@ int skill_attack(BF attack_type, dumb_ptr<block_list> src,
     eptr<struct status_change, StatusChange, StatusChange::MAX_STATUSCHANGE> sc_data;
     int type, lv, damage;
 
-    nullpo_ret(src);
-    nullpo_ret(dsrc);
-    nullpo_ret(bl);
+    nullpo_retz(src);
+    nullpo_retz(dsrc);
+    nullpo_retz(bl);
 
     sc_data = battle_get_sc_data(bl);
 
 //何もしない判定ここから
     if (dsrc->bl_m != bl->bl_m)       //対象が同じマップにいなければ何もしない
         return 0;
-    if (src->bl_prev == NULL || dsrc->bl_prev == NULL || bl->bl_prev == NULL)    //prevよくわからない※
+    if (src->bl_prev == nullptr || dsrc->bl_prev == nullptr || bl->bl_prev == nullptr)    //prevよくわからない※
         return 0;
     if (src->bl_type == BL::PC && pc_isdead(src->is_player()))  //術者？がPCですでに死んでいたら何もしない
         return 0;
@@ -305,7 +305,7 @@ int skill_attack(BF attack_type, dumb_ptr<block_list> src,
     battle_damage(src, bl, damage, 0);
 
     /* ダメージがあるなら追加効果判定 */
-    if (bl->bl_prev != NULL)
+    if (bl->bl_prev != nullptr)
     {
         dumb_ptr<map_session_data> sd = bl->is_player();
         if (bl->bl_type != BL::PC || !pc_isdead(sd))
@@ -403,7 +403,7 @@ int skill_castend_damage_id(dumb_ptr<block_list> src, dumb_ptr<block_list> bl,
         SkillID skillid, int skilllv,
         tick_t tick, BCT flag)
 {
-    dumb_ptr<map_session_data> sd = NULL;
+    dumb_ptr<map_session_data> sd = nullptr;
 
     nullpo_retr(1, src);
     nullpo_retr(1, bl);
@@ -413,7 +413,7 @@ int skill_castend_damage_id(dumb_ptr<block_list> src, dumb_ptr<block_list> bl,
     if (sd && pc_isdead(sd))
         return 1;
 
-    if (bl->bl_prev == NULL)
+    if (bl->bl_prev == nullptr)
         return 1;
     if (bl->bl_type == BL::PC && pc_isdead(bl->is_player()))
         return 1;
@@ -498,10 +498,10 @@ int skill_castend_damage_id(dumb_ptr<block_list> src, dumb_ptr<block_list> bl,
 int skill_castend_nodamage_id(dumb_ptr<block_list> src, dumb_ptr<block_list> bl,
         SkillID skillid, int skilllv)
 {
-    dumb_ptr<map_session_data> sd = NULL;
-    dumb_ptr<map_session_data> dstsd = NULL;
-    dumb_ptr<mob_data> md = NULL;
-    dumb_ptr<mob_data> dstmd = NULL;
+    dumb_ptr<map_session_data> sd = nullptr;
+    dumb_ptr<map_session_data> dstsd = nullptr;
+    dumb_ptr<mob_data> md = nullptr;
+    dumb_ptr<mob_data> dstmd = nullptr;
     int sc_def_vit, sc_def_mdef, strip_fix;
 
     nullpo_retr(1, src);
@@ -536,7 +536,7 @@ int skill_castend_nodamage_id(dumb_ptr<block_list> src, dumb_ptr<block_list> bl,
     if (strip_fix < 0)
         strip_fix = 0;
 
-    if (bl == NULL || bl->bl_prev == NULL)
+    if (bl == nullptr || bl->bl_prev == nullptr)
         return 1;
     if (sd && pc_isdead(sd))
         return 1;
@@ -651,7 +651,7 @@ interval_t skill_delayfix(dumb_ptr<block_list> bl, interval_t interval)
  */
 int skill_castcancel(dumb_ptr<block_list> bl, int)
 {
-    nullpo_ret(bl);
+    nullpo_retz(bl);
 
     if (bl->bl_type == BL::PC)
     {
@@ -688,7 +688,7 @@ int skill_status_change_active(dumb_ptr<block_list> bl, StatusChange type)
 {
     eptr<struct status_change, StatusChange, StatusChange::MAX_STATUSCHANGE> sc_data;
 
-    nullpo_ret(bl);
+    nullpo_retz(bl);
     if (bl->bl_type != BL::PC && bl->bl_type != BL::MOB)
     {
         if (battle_config.error_log)
@@ -806,7 +806,7 @@ int skill_update_heal_animation(dumb_ptr<map_session_data> sd)
 {
     const Opt2 mask = Opt2::_heal;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
     bool wis_active = bool(sd->opt2 & mask);
     bool is_active = sd->quick_regeneration_hp.amount > 0;
 
@@ -828,11 +828,11 @@ int skill_update_heal_animation(dumb_ptr<map_session_data> sd)
 void skill_status_change_timer(TimerData *tid, tick_t tick, BlockId id, StatusChange type)
 {
     dumb_ptr<block_list> bl;
-    dumb_ptr<map_session_data> sd = NULL;
+    dumb_ptr<map_session_data> sd = nullptr;
     eptr<struct status_change, StatusChange, StatusChange::MAX_STATUSCHANGE> sc_data;
     //short *sc_count; //使ってない？
 
-    if ((bl = map_id2bl(id)) == NULL)
+    if ((bl = map_id2bl(id)) == nullptr)
         return;
     //該当IDがすでに消滅しているというのはいかにもありそうなのでスルーしてみる
     sc_data = battle_get_sc_data(bl);
@@ -929,7 +929,7 @@ int skill_status_effect(dumb_ptr<block_list> bl, StatusChange type,
         int val1,
         interval_t tick, BlockId spell_invocation)
 {
-    dumb_ptr<map_session_data> sd = NULL;
+    dumb_ptr<map_session_data> sd = nullptr;
     eptr<struct status_change, StatusChange, StatusChange::MAX_STATUSCHANGE> sc_data;
     short *sc_count;
     Option *option;
@@ -940,20 +940,20 @@ int skill_status_effect(dumb_ptr<block_list> bl, StatusChange type,
     SP updateflag = SP::ZERO;
     int scdef = 0;
 
-    nullpo_ret(bl);
+    nullpo_retz(bl);
     sc_data = battle_get_sc_data(bl);
     if (not sc_data)
         return 0;
     sc_count = battle_get_sc_count(bl);
-    nullpo_ret(sc_count);
+    nullpo_retz(sc_count);
     option = battle_get_option(bl);
-    nullpo_ret(option);
+    nullpo_retz(option);
     opt1 = battle_get_opt1(bl);
-    nullpo_ret(opt1);
+    nullpo_retz(opt1);
     opt2 = battle_get_opt2(bl);
-    nullpo_ret(opt2);
+    nullpo_retz(opt2);
     opt3 = battle_get_opt3(bl);
-    nullpo_ret(opt3);
+    nullpo_retz(opt3);
 
     switch (type)
     {
@@ -1111,20 +1111,20 @@ int skill_status_change_clear(dumb_ptr<block_list> bl, int type)
     Opt2 *opt2;
     Opt3 *opt3;
 
-    nullpo_ret(bl);
+    nullpo_retz(bl);
     sc_data = battle_get_sc_data(bl);
     if (not sc_data)
         return 0;
     sc_count = battle_get_sc_count(bl);
-    nullpo_ret(sc_count);
+    nullpo_retz(sc_count);
     option = battle_get_option(bl);
-    nullpo_ret(option);
+    nullpo_retz(option);
     opt1 = battle_get_opt1(bl);
-    nullpo_ret(opt1);
+    nullpo_retz(opt1);
     opt2 = battle_get_opt2(bl);
-    nullpo_ret(opt2);
+    nullpo_retz(opt2);
     opt3 = battle_get_opt3(bl);
-    nullpo_ret(opt3);
+    nullpo_retz(opt3);
 
     if (*sc_count == 0)
         return 0;
diff --git a/src/map/storage.cpp b/src/map/storage.cpp
index 88db8c4..b063250 100644
--- a/src/map/storage.cpp
+++ b/src/map/storage.cpp
@@ -47,7 +47,7 @@ void do_final_storage(void)
 Storage *account2storage(AccountId account_id)
 {
     Storage *stor = storage_db.search(account_id);
-    if (stor == NULL)
+    if (stor == nullptr)
     {
         stor = storage_db.init(account_id);
         stor->account_id = account_id;
@@ -73,13 +73,13 @@ void storage_delete(AccountId account_id)
  */
 int storage_storageopen(dumb_ptr<map_session_data> sd)
 {
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     if (sd->state.storage_open)
         return 1;               //Already open?
 
     Storage *stor = storage_db.search(sd->status_key.account_id);
-    if (stor == NULL)
+    if (stor == nullptr)
     {                           //Request storage.
         intif_request_storage(sd->status_key.account_id);
         return 1;
@@ -177,9 +177,9 @@ int storage_storageadd(dumb_ptr<map_session_data> sd, IOff0 index, int amount)
 {
     Storage *stor;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
     stor = account2storage2(sd->status_key.account_id);
-    nullpo_ret(stor);
+    nullpo_retz(stor);
 
     if ((stor->storage_amount > MAX_STORAGE) || !stor->storage_status)
         return 0;               // storage full / storage closed
@@ -213,9 +213,9 @@ int storage_storageget(dumb_ptr<map_session_data> sd, SOff0 index, int amount)
     Storage *stor;
     PickupFail flag;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
     stor = account2storage2(sd->status_key.account_id);
-    nullpo_ret(stor);
+    nullpo_retz(stor);
 
     if (!index.ok())
         return 0;
@@ -242,9 +242,9 @@ int storage_storageclose(dumb_ptr<map_session_data> sd)
 {
     Storage *stor;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
     stor = account2storage2(sd->status_key.account_id);
-    nullpo_ret(stor);
+    nullpo_retz(stor);
 
     clif_storageclose(sd);
     if (stor->storage_status)
@@ -274,7 +274,7 @@ int storage_storage_quit(dumb_ptr<map_session_data> sd)
 {
     Storage *stor;
 
-    nullpo_ret(sd);
+    nullpo_retz(sd);
 
     stor = account2storage2(sd->status_key.account_id);
     if (stor)
diff --git a/src/map/trade.cpp b/src/map/trade.cpp
index 7a4913a..c21fd27 100644
--- a/src/map/trade.cpp
+++ b/src/map/trade.cpp
@@ -44,7 +44,7 @@ void trade_traderequest(dumb_ptr<map_session_data> sd, BlockId target_id)
 
     nullpo_retv(sd);
 
-    if ((target_sd = map_id2sd(target_id)) != NULL)
+    if ((target_sd = map_id2sd(target_id)) != nullptr)
     {
         if (!battle_config.invite_request_check)
         {
@@ -97,7 +97,7 @@ void trade_tradeack(dumb_ptr<map_session_data> sd, int type)
     dumb_ptr<map_session_data> target_sd;
     nullpo_retv(sd);
 
-    if ((target_sd = map_id2sd(account_to_block(sd->trade_partner))) != NULL)
+    if ((target_sd = map_id2sd(account_to_block(sd->trade_partner))) != nullptr)
     {
         clif_tradestart(target_sd, type);
         clif_tradestart(sd, type);
@@ -134,7 +134,7 @@ void trade_tradeadditem(dumb_ptr<map_session_data> sd, IOff2 index, int amount)
 
     nullpo_retv(sd);
 
-    if (((target_sd = map_id2sd(account_to_block(sd->trade_partner))) != NULL)
+    if (((target_sd = map_id2sd(account_to_block(sd->trade_partner))) != nullptr)
         && (sd->deal_locked < 1))
     {
         if (!index.ok())
@@ -153,7 +153,7 @@ void trade_tradeadditem(dumb_ptr<map_session_data> sd, IOff2 index, int amount)
             for (IOff0 i : IOff0::iter())
             {
                 if (!target_sd->status.inventory[i].nameid
-                    && target_sd->inventory_data[i] == NULL)
+                    && target_sd->inventory_data[i] == nullptr)
                     free_++;
             }
             for (trade_i = 0; trade_i < TRADE_MAX; trade_i++)
@@ -169,7 +169,7 @@ void trade_tradeadditem(dumb_ptr<map_session_data> sd, IOff2 index, int amount)
                     {
                         if (target_sd->status.inventory[i].nameid ==
                             sd->status.inventory[index.unshift()].nameid
-                            && target_sd->inventory_data[i] != NULL)
+                            && target_sd->inventory_data[i] != nullptr)
                         {
                             id = target_sd->inventory_data[i];
                             if (id->type != ItemType::WEAPON
@@ -225,7 +225,7 @@ void trade_tradeadditem(dumb_ptr<map_session_data> sd, IOff2 index, int amount)
                         if (target_sd->status.inventory[i].nameid ==
                             sd->status.
                             inventory[sd->deal_item_index[trade_i].unshift()].nameid
-                            && target_sd->inventory_data[i] != NULL)
+                            && target_sd->inventory_data[i] != nullptr)
                         {
                             id = target_sd->inventory_data[i];
                             if (id->type != ItemType::WEAPON
@@ -272,7 +272,7 @@ void trade_tradeok(dumb_ptr<map_session_data> sd)
 
     }
 
-    if ((target_sd = map_id2sd(account_to_block(sd->trade_partner))) != NULL)
+    if ((target_sd = map_id2sd(account_to_block(sd->trade_partner))) != nullptr)
     {
         sd->deal_locked = 1;
         clif_tradeitemok(sd, IOff2::from(0), 0, 0);
@@ -292,7 +292,7 @@ void trade_tradecancel(dumb_ptr<map_session_data> sd)
 
     nullpo_retv(sd);
 
-    if ((target_sd = map_id2sd(account_to_block(sd->trade_partner))) != NULL)
+    if ((target_sd = map_id2sd(account_to_block(sd->trade_partner))) != nullptr)
     {
         for (trade_i = 0; trade_i < TRADE_MAX; trade_i++)
         {                       //give items back (only virtual)
@@ -347,7 +347,7 @@ void trade_tradecommit(dumb_ptr<map_session_data> sd)
 
     nullpo_retv(sd);
 
-    if ((target_sd = map_id2sd(account_to_block(sd->trade_partner))) != NULL)
+    if ((target_sd = map_id2sd(account_to_block(sd->trade_partner))) != nullptr)
     {
         MAP_LOG_PC(sd, " TRADECOMMIT WITH %d GIVE %d GET %d"_fmt,
                 target_sd->status_key.char_id, sd->deal_zeny,
@@ -451,7 +451,7 @@ void trade_verifyzeny(dumb_ptr<map_session_data> sd)
 
     nullpo_retv(sd);
 
-    if ((target_sd = map_id2sd(account_to_block(sd->trade_partner))) != NULL)
+    if ((target_sd = map_id2sd(account_to_block(sd->trade_partner))) != nullptr)
     {
         if (sd->deal_zeny > sd->status.zeny)
         {