* Changes to Dissonance -- don't increment the timer again if the target has died

* Changed some nullpo checks back to normal null checks
* Changed some nullpo checks to print some debug information
* Added some sd checks before calling pc_blockskill
* Added fix for SQL char's friend list updating
* Fixed a crash if the player invited to join a guild is not online
* Find the guild invitation sender first before clearing it

git-svn-id: https://rathena.svn.sourceforge.net/svnroot/rathena/branches/stable@1124 54d463be-8e91-2dee-dedb-b68131a5f0ec

4 files changed, 29 insertions, 19 deletions

diff --git a/src/map/guild.c b/src/map/guild.c
index 72bf302f0..ed3eda3ba 100644
--- a/src/map/guild.c
+++ b/src/map/guild.c
@@ -581,17 +581,18 @@ int guild_member_added(int guild_id,int account_id,int char_id,int flag)
 	if( (g=guild_search(guild_id))==NULL )
 		return 0;
 
-	if((sd==NULL || sd->guild_invite==0) && flag==0){
+	if(sd==NULL || sd->guild_invite==0){
 		// キャラ側に登録できなかったため脱退要求を出す
-		if(battle_config.error_log)
-			printf("guild: member added error %d is not online\n",account_id);
- 		intif_guild_leave(guild_id,account_id,char_id,0,"**登録失敗**");
+		if (flag == 0) {
+			if(battle_config.error_log)
+				printf("guild: member added error %d is not online\n",account_id);
+ 			intif_guild_leave(guild_id,account_id,char_id,0,"**登録失敗**");
+		}
 		return 0;
 	}
-	sd->guild_invite=0;
-	sd->guild_invite_account=0;
-
-	sd2=map_id2sd(sd->guild_invite_account);
+	sd2 = map_id2sd(sd->guild_invite_account);
+	sd->guild_invite = 0;
+	sd->guild_invite_account = 0;
 
 	if(flag==1){	// 失敗
 		if( sd2!=NULL )
diff --git a/src/map/pc.c b/src/map/pc.c
index 3d40da95a..87ad099ac 100644
--- a/src/map/pc.c
+++ b/src/map/pc.c
@@ -3114,7 +3114,7 @@ static int pc_walk(int tid,unsigned int tick,int id,int data)
 	int moveblock;
 	int x,y,dx,dy;
 
-	nullpo_retr(0, (sd=map_id2sd(id)));
+	nullpo_retr_f(0, (sd=map_id2sd(id)), "id=%d", id);
 
 	if(sd->walktimer != tid){
 		if(battle_config.error_log)
diff --git a/src/map/skill.c b/src/map/skill.c
index e4b171636..61cd89ebd 100644
--- a/src/map/skill.c
+++ b/src/map/skill.c
@@ -2823,7 +2823,8 @@ int skill_castend_damage_id( struct block_list* src, struct block_list *bl,int s
 					clif_updatestatus(sd,SP_SP);
 				}				
 			}
-			pc_blockskill_start (sd, skillid, (skilllv < 5 ? 10000: 15000));
+			if (sd)
+				pc_blockskill_start (sd, skillid, (skilllv < 5 ? 10000: 15000));
 		}
 		break;
 
@@ -3305,7 +3306,8 @@ int skill_castend_nodamage_id( struct block_list *src, struct block_list *bl,int
 	case SM_ENDURE:			/* インデュア */
 		clif_skill_nodamage(src,bl,skillid,skilllv,1);
 		status_change_start(bl,SkillStatusChangeTable[skillid],skilllv,0,0,0,skill_get_time(skillid,skilllv),0 );
-		pc_blockskill_start (sd, skillid, 10000);
+		if (sd)
+			pc_blockskill_start (sd, skillid, 10000);
 		break;
 
 	case SM_AUTOBERSERK:	// Celest
@@ -5039,7 +5041,8 @@ int skill_castend_pos2( struct block_list *src, int x,int y,int skillid,int skil
 			pc_movepos(sd,x,y);
 		}else if( src->type==BL_MOB )
 			mob_warp((struct mob_data *)src,-1,x,y,0);
-		pc_blockskill_start (sd, MO_EXTREMITYFIST, 2000);
+		if (sd)
+			pc_blockskill_start (sd, MO_EXTREMITYFIST, 2000);
 		break;
 	case AM_CANNIBALIZE:	// バイオプラント
 		if(sd){
@@ -7718,10 +7721,12 @@ int skill_use_id( struct map_session_data *sd, int target_id,
 	case WE_FEMALE:
 		{
 			struct map_session_data *p_sd = pc_get_partner(sd);
-			nullpo_retr (0, p_sd)
+			if (p_sd == NULL)	// it's possible to get null if we're not married ^^;
+				return 0;
+			// nullpo_retr (0, p_sd)
 			if(skill_num == WE_MALE && sd->status.hp <= ((15*sd->status.max_hp)/100))	// Requires more than 15% of Max HP for WE_MALE
 				return 0;
-			if(skill_num == WE_FEMALE && sd->status.sp <= ((15*sd->status.max_sp)/100))	// Requires more than 15% of Max SP for WE_FEMALE
+			else if(skill_num == WE_FEMALE && sd->status.sp <= ((15*sd->status.max_sp)/100))	// Requires more than 15% of Max SP for WE_FEMALE
 				return 0;
 			target_id = p_sd->bl.id;
 			//rangeをもう1回?査
diff --git a/src/map/status.c b/src/map/status.c
index 55f4326f9..412308f59 100644
--- a/src/map/status.c
+++ b/src/map/status.c
@@ -3997,13 +3997,13 @@ int status_change_end( struct block_list* bl , int type,int tid )
  */
 int status_change_timer(int tid, unsigned int tick, int id, int data)
 {
-	int type=data;
+	int type = data;
 	struct block_list *bl;
 	struct map_session_data *sd=NULL;
 	struct status_change *sc_data;
 	//short *sc_count; //使ってない？
 
-	nullpo_retr(0, bl=map_id2bl(id));
+	nullpo_retr_f(0, bl=map_id2bl(id), "id=%d data=%d",id,data);
 	nullpo_retr(0, sc_data=status_get_sc_data(bl));
 
 	if(bl->type==BL_PC)
@@ -4104,8 +4104,10 @@ int status_change_timer(int tid, unsigned int tick, int id, int data)
 	case SC_WATERBALL:	/* ウォ?タ?ボ?ル */
 		{
 			struct block_list *target=map_id2bl(sc_data[type].val2);
-			nullpo_retb(target);
-			nullpo_retb(target->prev);
+			if (!target || !target->prev)
+				break;	// target has been killed in previous hits, no need to raise an alarm ^^;
+			// nullpo_retb(target);
+			// nullpo_retb(target->prev);
 			skill_attack(BF_MAGIC,bl,bl,target,WZ_WATERBALL,sc_data[type].val1,tick,0);
 			if((--sc_data[type].val3)>0) {
 				sc_data[type].timer=add_timer( 150+tick,status_change_timer, bl->id, data );
@@ -4139,8 +4141,10 @@ int status_change_timer(int tid, unsigned int tick, int id, int data)
 				break;*/
 			nullpo_retb(unit);
 			nullpo_retb(unit->group);
-			nullpo_retr(0, src=map_id2bl(unit->group->src_id));
+			nullpo_retb(src=map_id2bl(unit->group->src_id));
 			skill_attack(BF_MISC,src,&unit->bl,bl,unit->group->skill_id,sc_data[type].val1,tick,0);
+			if( (bl->type==BL_MOB) && (MS_DEAD==((struct mob_data *)bl)->state.state) )
+				break;
 			sc_data[type].timer=add_timer(skill_get_time2(unit->group->skill_id,unit->group->skill_lv)+tick,
 				status_change_timer, bl->id, data );
 			return 0;