- Follow up r17004 & bugreport:6995, added safer calculation to strategic points at battle.c&status.c.

- Implemented reading of renewal exp_guild.txt. (tid:75398)
- Fixed Status Fogwall(Blinding Mist) to be reduced by status/card. (bugreport:4543)

git-svn-id: https://rathena.svn.sourceforge.net/svnroot/rathena/trunk@17017 54d463be-8e91-2dee-dedb-b68131a5f0ec

3 files changed, 54 insertions, 58 deletions

diff --git a/src/map/battle.c b/src/map/battle.c
index 0c3c2c24d..f79de79f4 100644
--- a/src/map/battle.c
+++ b/src/map/battle.c
@@ -1364,7 +1364,7 @@ static int battle_calc_drain(int damage, int rate, int per)
 	int diff = 0;
 
 	if (per && rnd()%1000 < rate) {
-		diff = (damage * per) / 100;
+		diff = ((int64)damage * per) / 100;
 		if (diff == 0) {
 			if (per > 0)
 				diff = 1;
@@ -1495,7 +1495,7 @@ int battle_addmastery(struct map_session_data *sd,struct block_list *target,int
  */
 static int battle_calc_base_damage(struct status_data *status, struct weapon_atk *wa, struct status_change *sc, unsigned short t_size, struct map_session_data *sd, int flag)
 {
-	unsigned short atkmin=0, atkmax=0;
+	unsigned int atkmin=0, atkmax=0;
 	short type = 0;
 	int damage = 0;
 
@@ -2763,11 +2763,11 @@ static struct Damage battle_calc_weapon_attack(struct block_list *src,struct blo
  					break;
 				case SR_TIGERCANNON:// ATK [((Caster consumed HP + SP) / 4) x Caster Base Level / 100] %
 					{
-						int hp = sstatus->max_hp * (10 + 2 * skill_lv) / 100,
-							sp = sstatus->max_sp * (6 + skill_lv) / 100;
-						skillratio = (hp+sp) / 4;
+						int hp = (int64)sstatus->max_hp * (10 + 2 * skill_lv) / 100,
+							sp = (int64)sstatus->max_sp * (6 + skill_lv) / 100;
+						skillratio = ((int64)hp+sp) / 4;
 						if( sc && sc->data[SC_COMBO] && sc->data[SC_COMBO]->val1 == SR_FALLENEMPIRE ) // ATK [((Caster consumed HP + SP) / 2) x Caster Base Level / 100] %
-							skillratio = (hp+sp) / 2;
+							skillratio = ((int64)hp+sp) / 2;
 						RE_LVL_DMOD(100);
 					}
 						break;
@@ -2975,9 +2975,9 @@ static struct Damage battle_calc_weapon_attack(struct block_list *src,struct blo
 				case SR_GATEOFHELL:
 					ATK_ADD (sstatus->max_hp - status_get_hp(src));
 					if(sc && sc->data[SC_COMBO] && sc->data[SC_COMBO]->val1 == SR_FALLENEMPIRE){
-						ATK_ADD ( (sstatus->sp * (1 + skill_lv * 2 / 10)) + 10 * status_get_lv(src) );
+						ATK_ADD ( ((int64)sstatus->sp * (1 + skill_lv * 2 / 10)) + 10 * status_get_lv(src) );
 					}else{
-						ATK_ADD ( (sstatus->max_sp * (1 + skill_lv * 2 / 10)) + 40 * status_get_lv(src) );
+						ATK_ADD ( ((int64)sstatus->max_sp * (1 + skill_lv * 2 / 10)) + 40 * status_get_lv(src) );
 					}
 					break;
 				case SR_TIGERCANNON: // (Tiger Cannon skill level x 240) + (Target Base Level x 40)
@@ -3120,7 +3120,7 @@ static struct Damage battle_calc_weapon_attack(struct block_list *src,struct blo
 		{	//Defense reduction
 			short vit_def;
 			defType def1 = status_get_def(target); //Don't use tstatus->def1 due to skill timer reductions.
-			short def2 = (short)tstatus->def2;
+			short def2 = tstatus->def2;
 
 			if( sd )
 			{
@@ -3195,14 +3195,14 @@ static struct Damage battle_calc_weapon_attack(struct block_list *src,struct blo
 				 **/
 				if (def1 > 900) def1 = 900;
 				ATK_RATE2(
-					flag.idef ?100:(flag.pdef ?(int)(flag.pdef *(def1+vit_def)):(1+(900-def1)/9)),
-			 		flag.idef2?100:(flag.pdef2?(int)(flag.pdef2*(def1+vit_def)):(1+(900-def1)/9))
+					flag.idef ?100:(flag.pdef ? (flag.pdef*(def1+vit_def)) : (1+(900-def1)/9)),
+			 		flag.idef2?100:(flag.pdef2 ? (flag.pdef2*(def1+vit_def)) : (1+(900-def1)/9))
 				);
 			#else
 				if (def1 > 100) def1 = 100;
 				ATK_RATE2(
-					flag.idef ?100:(flag.pdef ?(int)(flag.pdef *(def1+vit_def)):(100-def1)),
-			 		flag.idef2?100:(flag.pdef2?(int)(flag.pdef2*(def1+vit_def)):(100-def1))
+					flag.idef ?100:(flag.pdef ? (flag.pdef*(def1+vit_def)) : (100-def1)),
+			 		flag.idef2?100:(flag.pdef2? (flag.pdef2*(def1+vit_def)) : (100-def1))
 				);
 			#endif
 			ATK_ADD2(
@@ -3474,7 +3474,7 @@ static struct Damage battle_calc_weapon_attack(struct block_list *src,struct blo
 			int hp= sstatus->max_hp;
 			if (sd && tsd) {
 				hp = 8*hp/100;
-				if (100*sstatus->hp <= 20*sstatus->max_hp)
+				if (((int64)sstatus->hp * 100) <= ((int64)sstatus->max_hp * 20))
 					hp = sstatus->hp;
 			} else
 				hp = 2*hp/100; //2% hp loss per hit
@@ -3779,7 +3779,7 @@ struct Damage battle_calc_magic_attack(struct block_list *src,struct block_list
 						break;
 					case WZ_VERMILION:
 						{
-    						int interval = 0, per = interval , ratio = per;
+    						int interval = 0, per = interval, ratio = per;
     						while( (per++) < skill_lv ){
      							ratio += interval;
      							if(per%3==0) interval += 20;
@@ -4190,7 +4190,7 @@ struct Damage battle_calc_misc_attack(struct block_list *src,struct block_list *
 	case HT_BLASTMINE:
 	case HT_CLAYMORETRAP:
 		md.damage = skill_lv * sstatus->dex * (3+status_get_lv(src)/100) * (1+sstatus->int_/35);
-		md.damage += (int64)md.damage * (rnd()%20-10) / 100;
+		md.damage += md.damage * (rnd()%20-10) / 100;
 		md.damage += 40 * (sd?pc_checkskill(sd,RA_RESEARCHTRAP):0);
 		break;
 #else
@@ -4221,7 +4221,7 @@ struct Damage battle_calc_misc_attack(struct block_list *src,struct block_list *
 			damage_div_fix(md.damage, skill);
 
 			//Falcon Assault Modifier
-			md.damage=md.damage*(150+70*skill_lv)/100;
+			md.damage=(int64)md.damage*(150+70*skill_lv)/100;
 		}
 		break;
 	case TF_THROWSTONE:
@@ -4273,7 +4273,7 @@ struct Damage battle_calc_misc_attack(struct block_list *src,struct block_list *
 		md.damage = sd?sd->status.job_level:status_get_lv(src);
 		break;
 	case HVAN_EXPLOSION:	//[orn]
-		md.damage = sstatus->max_hp * (50 + 50 * skill_lv) / 100 ;
+		md.damage = (int64)sstatus->max_hp * (50 + 50 * skill_lv) / 100 ;
 		break ;
 	case ASC_BREAKER:
 		md.damage = 500+rnd()%500 + 5*skill_lv * sstatus->int_;
diff --git a/src/map/skill.c b/src/map/skill.c
index 1939fe948..f61c6e480 100644
--- a/src/map/skill.c
+++ b/src/map/skill.c
@@ -1102,7 +1102,7 @@ int skill_additional_effect (struct block_list* src, struct block_list *bl, int
 
 	case PF_FOGWALL:
 		if (src != bl && !tsc->data[SC_DELUGE])
-			status_change_start(bl,SC_BLIND,10000,skilllv,0,0,0,skill_get_time2(skillid,skilllv),8);
+			sc_start(bl,SC_BLIND,100,skilllv,skill_get_time2(skillid,skilllv));
 		break;
 
 	case LK_HEADCRUSH: //Headcrush has chance of causing Bleeding status, except on demon and undead element
diff --git a/src/map/status.c b/src/map/status.c
index d9081ede8..d02af4c3f 100644
--- a/src/map/status.c
+++ b/src/map/status.c
@@ -1309,7 +1309,7 @@ int status_damage(struct block_list *src,struct block_list *target,int hp, int s
 			((TBL_MOB*)target)->state.rebirth = 1;
 
 		return hp+sp;
-    }
+	}
     if(target->type == BL_PC){
         TBL_PC *sd = BL_CAST(BL_PC,target);
         TBL_HOM *hd = sd->hd;
@@ -1431,38 +1431,34 @@ int status_percent_change(struct block_list *src,struct block_list *target,signe
 
 	status = status_get_status_data(target);
 
-	//Change the equation when the values are high enough to discard the
-	//imprecision in exchange of overflow protection [Skotlex]
-	//Also add 100% checks since those are the most used cases where we don't
-	//want aproximation errors.
+
+	//It's safe now [MarkZD]
 	if (hp_rate > 99)
 		hp = status->hp;
 	else if (hp_rate > 0)
 		hp = status->hp>10000?
 			hp_rate*(status->hp/100):
-			(hp_rate*status->hp)/100;
+			((int64)hp_rate*status->hp)/100;
 	else if (hp_rate < -99)
 		hp = status->max_hp;
 	else if (hp_rate < 0)
 		hp = status->max_hp>10000?
 			(-hp_rate)*(status->max_hp/100):
-			(-hp_rate*status->max_hp)/100;
+			((int64)-hp_rate*status->max_hp)/100;
 	if (hp_rate && !hp)
 		hp = 1;
 
 	if (flag == 2 && hp >= status->hp)
 		hp = status->hp-1; //Must not kill target.
 
-	//Should be safe to not do overflow protection here, noone should have
-	//millions upon millions of SP
 	if (sp_rate > 99)
 		sp = status->sp;
 	else if (sp_rate > 0)
-		sp = (sp_rate*status->sp)/100;
+		sp = ((int64)sp_rate*status->sp)/100;
 	else if (sp_rate < -99)
 		sp = status->max_sp;
 	else if (sp_rate < 0)
-		sp = (-sp_rate)*status->max_sp/100;
+		sp = ((int64)-sp_rate)*status->max_sp/100;
 	if (sp_rate && !sp)
 		sp = 1;
 
@@ -1497,8 +1493,8 @@ int status_revive(struct block_list *bl, unsigned char per_hp, unsigned char per
 	if (status == &dummy_status)
 		return 0; //Invalid target.
 
-	hp = status->max_hp * per_hp/100;
-	sp = status->max_sp * per_sp/100;
+	hp = (int64)status->max_hp * per_hp/100;
+	sp = (int64)status->max_sp * per_sp/100;
 
 	if(hp > status->max_hp - status->hp)
 		hp = status->max_hp - status->hp;
@@ -2234,8 +2230,8 @@ static void status_calc_sigma(void)
 ///    f(x) = 35 + x*(A + B*C/D) + sum(i=2..x){ i*C/D }
 static unsigned int status_base_pc_maxhp(struct map_session_data* sd, struct status_data* status)
 {
-	unsigned int val = pc_class2idx(sd->status.class_);
-	val = 35 + sd->status.base_level*hp_coefficient2[val]/100 + hp_sigma_val[val][sd->status.base_level];
+	uint64 val = pc_class2idx(sd->status.class_);
+	val = 35 + sd->status.base_level*(int64)hp_coefficient2[val]/100 + hp_sigma_val[val][sd->status.base_level];
 
 	if((sd->class_&MAPID_UPPERMASK) == MAPID_NINJA || (sd->class_&MAPID_UPPERMASK) == MAPID_GUNSLINGER)
 		val += 100; //Since their HP can't be approximated well enough without this.
@@ -2250,14 +2246,14 @@ static unsigned int status_base_pc_maxhp(struct map_session_data* sd, struct sta
 		val += val * 25/100; //Trans classes get a 25% hp bonus
 	else if (sd->class_&JOBL_BABY)
 		val -= val * 30/100; //Baby classes get a 30% hp penalty
-	return val;
+	return (unsigned int)val;
 }
 
 static unsigned int status_base_pc_maxsp(struct map_session_data* sd, struct status_data *status)
 {
-	unsigned int val;
+	uint64 val;
 
-	val = 10 + sd->status.base_level*sp_coefficient[pc_class2idx(sd->status.class_)]/100;
+	val = 10 + sd->status.base_level*(int64)sp_coefficient[pc_class2idx(sd->status.class_)]/100;
 	val += val * status->int_/100;
 
 	if (sd->class_&JOBL_UPPER)
@@ -2267,7 +2263,7 @@ static unsigned int status_base_pc_maxsp(struct map_session_data* sd, struct sta
 	if ((sd->class_&MAPID_UPPERMASK) == MAPID_TAEKWON && sd->status.base_level >= 90 && pc_famerank(sd->status.char_id, MAPID_TAEKWON))
 		val *= 3; //Triple max SP for top ranking Taekwons over level 90.
 
-	return val;
+	return (unsigned int)val;
 }
 
 //Calculates player data from scratch without counting SC adjustments.
@@ -2278,9 +2274,9 @@ int status_calc_pc_(struct map_session_data* sd, bool first)
 	struct status_data *status; // pointer to the player's base status
 	const struct status_change *sc = &sd->sc;
 	struct s_skill b_skill[MAX_SKILL]; // previous skill tree
-	int b_weight, b_max_weight, b_cart_weight_max; // previous weight
-	int i,index;
-	int skill,refinedef=0;
+	int b_weight, b_max_weight, b_cart_weight_max, // previous weight
+	i, index, skill,refinedef=0;
+	int64 i64;
 
 	if (++calculating > 10) //Too many recursive calls!
 		return -1;
@@ -2717,7 +2713,7 @@ int status_calc_pc_(struct map_session_data* sd, bool first)
 	//We hold the standard Max HP here to make it faster to recalculate on vit changes.
 	sd->status.max_hp = status_base_pc_maxhp(sd,status);
 	//This is done to handle underflows from negative Max HP bonuses
-	i = sd->status.max_hp + (int)status->max_hp;
+	i64 = sd->status.max_hp + (int)status->max_hp;
 	status->max_hp = cap_value(i, 0, INT_MAX);
 
 	// Absolute modifiers from passive skills
@@ -2728,9 +2724,9 @@ int status_calc_pc_(struct map_session_data* sd, bool first)
 	if(sd->hprate < 0)
 		sd->hprate = 0;
 	if(sd->hprate!=100)
-		status->max_hp = status->max_hp * sd->hprate/100;
+		status->max_hp = (int64)status->max_hp * sd->hprate/100;
 	if(battle_config.hp_rate != 100)
-		status->max_hp = status->max_hp * battle_config.hp_rate/100;
+		status->max_hp = (int64)status->max_hp * battle_config.hp_rate/100;
 
 	if(status->max_hp > (unsigned int)battle_config.max_hp)
 		status->max_hp = battle_config.max_hp;
@@ -2742,16 +2738,16 @@ int status_calc_pc_(struct map_session_data* sd, bool first)
 	// Basic MaxSP value
 	sd->status.max_sp = status_base_pc_maxsp(sd,status);
 	//This is done to handle underflows from negative Max SP bonuses
-	i = sd->status.max_sp + (int)status->max_sp;
+	i64 = sd->status.max_sp + (int)status->max_sp;
 	status->max_sp = cap_value(i, 0, INT_MAX);
 
 	// Absolute modifiers from passive skills
 	if((skill=pc_checkskill(sd,SL_KAINA))>0)
 		status->max_sp += 30*skill;
 	if((skill=pc_checkskill(sd,HP_MEDITATIO))>0)
-		status->max_sp += status->max_sp * skill/100;
+		status->max_sp += (int64)status->max_sp * skill/100;
 	if((skill=pc_checkskill(sd,HW_SOULDRAIN))>0)
-		status->max_sp += status->max_sp * 2*skill/100;
+		status->max_sp += (int64)status->max_sp * 2*skill/100;
 	if( (skill = pc_checkskill(sd,RA_RESEARCHTRAP)) > 0 )
 		status->max_sp += 200 + 20 * skill;
 	if( (skill = pc_checkskill(sd,WM_LESSON)) > 0 )
@@ -2762,9 +2758,9 @@ int status_calc_pc_(struct map_session_data* sd, bool first)
 	if(sd->sprate < 0)
 		sd->sprate = 0;
 	if(sd->sprate!=100)
-		status->max_sp = status->max_sp * sd->sprate/100;
+		status->max_sp = (int64)status->max_sp * sd->sprate/100;
 	if(battle_config.sp_rate != 100)
-		status->max_sp = status->max_sp * battle_config.sp_rate/100;
+		status->max_sp = (int64)status->max_sp * battle_config.sp_rate/100;
 
 	if(status->max_sp > (unsigned int)battle_config.max_sp)
 		status->max_sp = battle_config.max_sp;
@@ -2781,13 +2777,13 @@ int status_calc_pc_(struct map_session_data* sd, bool first)
 	} else {
 		if((sd->class_&MAPID_BASEMASK) == MAPID_NOVICE && !(sd->class_&JOBL_2)
 			&& battle_config.restart_hp_rate < 50)
-			status->hp=status->max_hp>>1;
+			status->hp = status->max_hp>>1;
 		else
-			status->hp=status->max_hp * battle_config.restart_hp_rate/100;
+			status->hp = (int64)status->max_hp * battle_config.restart_hp_rate/100;
 		if(!status->hp)
 			status->hp = 1;
 
-		status->sp = status->max_sp * battle_config.restart_sp_rate /100;
+		status->sp = (int64)status->max_sp * battle_config.restart_sp_rate /100;
 
 		if( !status->sp ) /* the minimum for the respawn setting is SP:1 */
 			status->sp = 1;
@@ -3217,7 +3213,7 @@ int status_calc_elemental_(struct elemental_data *ed, bool first) {
 		status->mdef += ele->mdef;
 		status->flee = ele->flee;
 		status->hit = ele->hit;
-		
+
 		memcpy(&ed->battle_status,status,sizeof(struct status_data));
 	} else {
 		status_calc_misc(&ed->bl, status, 0);
@@ -3251,7 +3247,7 @@ static unsigned short status_calc_dmotion(struct block_list *bl, struct status_c
 static short status_calc_aspd(struct block_list *bl, struct status_change *sc, short flag);
 #endif
 static short status_calc_fix_aspd(struct block_list *bl, struct status_change *sc, int);
-static unsigned int status_calc_maxhp(struct block_list *,struct status_change *,unsigned int);
+static unsigned int status_calc_maxhp(struct block_list *,struct status_change *,uint64);
 static unsigned int status_calc_maxsp(struct block_list *,struct status_change *,unsigned int);
 static unsigned char status_calc_element(struct block_list *bl, struct status_change *sc, int element);
 static unsigned char status_calc_element_lv(struct block_list *bl, struct status_change *sc, int lv);
@@ -5472,10 +5468,10 @@ static unsigned short status_calc_dmotion(struct block_list *bl, struct status_c
 	return (unsigned short)cap_value(dmotion,0,USHRT_MAX);
 }
 
-static unsigned int status_calc_maxhp(struct block_list *bl, struct status_change *sc, unsigned int maxhp)
+static unsigned int status_calc_maxhp(struct block_list *bl, struct status_change *sc, uint64 maxhp)
 {
 	if(!sc || !sc->count)
-		return cap_value(maxhp,1,UINT_MAX);
+		return (unsigned int)cap_value(maxhp,1,UINT_MAX);
 
 	if(sc->data[SC_INCMHPRATE])
 		maxhp += maxhp * sc->data[SC_INCMHPRATE]->val1/100;
@@ -5528,7 +5524,7 @@ static unsigned int status_calc_maxhp(struct block_list *bl, struct status_chang
 	if (sc->data[SC_GOLDENE_FERSE])
 		maxhp += maxhp * sc->data[SC_GOLDENE_FERSE]->val2 / 100;
 
-	return cap_value(maxhp,1,UINT_MAX);
+	return (unsigned int)cap_value(maxhp,1,UINT_MAX);
 }
 
 static unsigned int status_calc_maxsp(struct block_list *bl, struct status_change *sc, unsigned int maxsp)
@@ -7150,7 +7146,7 @@ int status_change_start(struct block_list* bl,enum sc_type type,int rate,int val
 			val2 = val1*20; //SP gained
 			break;
 		case SC_KYRIE:
-			val2 = status->max_hp * (val1 * 2 + 10) / 100; //%Max HP to absorb
+			val2 = (int64)status->max_hp * (val1 * 2 + 10) / 100; //%Max HP to absorb
 			val3 = (val1 / 2 + 5); //Hits
 			break;
 		case SC_MAGICPOWER: