Allow Separate GrayCon Flee rate.

Added following Rules:

Combat:FleeGray - If true FleeGrayHPRatio will be used.
Combat:FleeGrayHPRatio - HP % when a Gray NPC begins to flee.

common/ruletypes.h

@@ -419,6 +419,8 @@ RULE_BOOL(Combat, UseIntervalAC, true)
 RULE_INT(Combat, PetAttackMagicLevel, 30)
 RULE_BOOL(Combat, EnableFearPathing, true)
 RULE_REAL(Combat, FleeMultiplier, 2.0) // Determines how quickly a NPC will slow down while fleeing. Decrease multiplier to slow NPC down quicker.
+RULE_BOOL(Combat, FleeGray, true) // If true FleeGrayHPRatio will be used.
+RULE_INT(Combat, FleeGrayHPRatio, 50) //HP % when a Gray NPC begins to flee.
 RULE_INT(Combat, FleeHPRatio, 25) //HP % when a NPC begins to flee.
 RULE_BOOL(Combat, FleeIfNotAlone, false) // If false, mobs won't flee if other mobs are in combat with it.
 RULE_BOOL(Combat, AdjustProcPerMinute, true)

zone/aggro.cpp

@@ -424,7 +424,7 @@ Mob* EntityList::AICheckNPCtoNPCAggro(Mob* sender, float iAggroRange, float iAss
 	return nullptr;
 }
 
-int EntityList::GetHatedCount(Mob *attacker, Mob *exclude)
+int EntityList::GetHatedCount(Mob *attacker, Mob *exclude, bool inc_gray_con)
 {
 	// Return a list of how many non-feared, non-mezzed, non-green mobs, within aggro range, hate *attacker
 	if (!attacker)
@@ -434,20 +434,25 @@ int EntityList::GetHatedCount(Mob *attacker, Mob *exclude)
 
 	for (auto it = npc_list.begin(); it != npc_list.end(); ++it) {
 		NPC *mob = it->second;
-		if (!mob || (mob == exclude))
+		if (!mob || (mob == exclude)) {
 			continue;
+		}
 
-		if (!mob->IsEngaged())
+		if (!mob->IsEngaged()) {
 			continue;
+		}
 
-		if (mob->IsFeared() || mob->IsMezzed())
+		if (mob->IsFeared() || mob->IsMezzed()) {
 			continue;
+		}
 
-		if (attacker->GetLevelCon(mob->GetLevel()) == CON_GRAY)
+		if (!inc_gray_con && attacker->GetLevelCon(mob->GetLevel()) == CON_GRAY) {
 			continue;
+		}
 
-		if (!mob->CheckAggro(attacker))
+		if (!mob->CheckAggro(attacker)) {
 			continue;
+		}
 
 		float AggroRange = mob->GetAggroRange();
 
@@ -455,14 +460,12 @@ int EntityList::GetHatedCount(Mob *attacker, Mob *exclude)
 
 		AggroRange *= AggroRange;
 
-		if (DistanceSquared(mob->GetPosition(), attacker->GetPosition()) > AggroRange)
+		if (DistanceSquared(mob->GetPosition(), attacker->GetPosition()) > AggroRange) {
 			continue;
-
+		}
 		Count++;
 	}
-
 	return Count;
-
 }
 
 void EntityList::AIYellForHelp(Mob* sender, Mob* attacker) {

zone/entity.h

@@ -416,7 +416,7 @@ public:
 
 	void	CheckClientAggro(Client *around);
 	Mob*	AICheckNPCtoNPCAggro(Mob* sender, float iAggroRange, float iAssistRange);
-	int	GetHatedCount(Mob *attacker, Mob *exclude);
+	int		GetHatedCount(Mob *attacker, Mob *exclude, bool inc_gray_con);
 	void	AIYellForHelp(Mob* sender, Mob* attacker);
 	bool	AICheckCloseBeneficialSpells(NPC* caster, uint8 iChance, float iRange, uint32 iSpellTypes);
 	bool	Merc_AICheckCloseBeneficialSpells(Merc* caster, uint8 iChance, float iRange, uint32 iSpellTypes);

zone/fearpath.cpp

@@ -31,71 +31,91 @@ extern Zone* zone;
 
 //this is called whenever we are damaged to process possible fleeing
 void Mob::CheckFlee() {
-	//if were allready fleeing, dont need to check more...
-	if(flee_mode && currently_fleeing)
+
+	// if mob is dead why would you run?
+	if(GetHP() == 0) {
 		return;
+	}
+
+	// if were already fleeing, don't need to check more...
+	if(flee_mode && currently_fleeing) {
+		return;
+	}
 
 	//dont bother if we are immune to fleeing
-	if(GetSpecialAbility(IMMUNE_FLEEING) || spellbonuses.ImmuneToFlee)
+	if(GetSpecialAbility(IMMUNE_FLEEING) || spellbonuses.ImmuneToFlee) {
 		return;
+	}
 
-	if(!flee_timer.Check())
-		return;	//only do all this stuff every little while, since
-				//its not essential that we start running RIGHT away
-
-	//see if were possibly hurt enough
-	float ratio = GetHPRatio();
-	float fleeratio = GetSpecialAbility(FLEE_PERCENT);
-	fleeratio = fleeratio > 0 ? fleeratio : RuleI(Combat, FleeHPRatio);
-
-	if(ratio >= fleeratio)
+	// Check if Flee Timer is cleared
+	if(!flee_timer.Check()) {
 		return;
+	}
 
-	//we might be hurt enough, check con now..
+	int hpratio = GetIntHPRatio();
+	int fleeratio = GetSpecialAbility(FLEE_PERCENT); // if a special flee_percent exists
 	Mob *hate_top = GetHateTop();
+
+	// Sanity Check for race conditions
+	if(hate_top == nullptr) {
+		return;
+	}
+
+	// If no special flee_percent check for Gray or Other con rates
+	if(GetLevelCon(hate_top->GetLevel(), GetLevel()) == CON_GRAY && fleeratio == 0 && RuleB(Combat, FleeGray)) {
+		fleeratio = RuleI(Combat, FleeGrayHPRatio);
+	} else if(fleeratio == 0) {
+		fleeratio = RuleI(Combat, FleeHPRatio );
+	}
+
+	// Mob does not have low enough health to flee
+	if(hpratio >= fleeratio) {
+		return;
+	}
+
+	// Sanity Check this should never happen...
 	if(!hate_top) {
-		//this should never happen...
 		StartFleeing();
 		return;
 	}
 
-	float other_ratio = hate_top->GetHPRatio();
+	int other_ratio = hate_top->GetIntHPRatio();
+	// If the Client is nearing death the NPC will not flee and instead try to kill the client.
 	if(other_ratio < 20) {
-		//our hate top is almost dead too... stay and fight
 		return;
 	}
 
-	//base our flee ratio on our con. this is how the
-	//attacker sees the mob, since this is all we can observe
+	// Flee Chance checking based on con.
 	uint32 con = GetLevelCon(hate_top->GetLevel(), GetLevel());
-	float run_ratio;
+	int flee_chance;
 	switch(con) {
 		//these values are not 100% researched
 		case CON_GRAY:
-			run_ratio = fleeratio;
+			flee_chance = 100;
 			break;
 		case CON_GREEN:
-			run_ratio = fleeratio * 9 / 10;
+			flee_chance = 90;
 			break;
 		case CON_LIGHTBLUE:
-			run_ratio = fleeratio * 9 / 10;
+			flee_chance = 90;
 			break;
 		case CON_BLUE:
-			run_ratio = fleeratio * 8 / 10;
+			flee_chance = 80;
 			break;
 		default:
-			run_ratio = fleeratio * 7 / 10;
+			flee_chance = 70;
 			break;
 	}
-	if(ratio < run_ratio)
-	{
-		if (RuleB(Combat, FleeIfNotAlone) ||
-			GetSpecialAbility(ALWAYS_FLEE) ||
-			(!RuleB(Combat, FleeIfNotAlone) && (entity_list.GetHatedCount(hate_top, this) == 0)))
+
+	// If we got here we are allowed to roll on flee chance if there is not other hated NPC's in the area.
+
+	if(RuleB(Combat, FleeIfNotAlone) || GetSpecialAbility(ALWAYS_FLEE) || zone->random.Roll(flee_chance) && entity_list.GetHatedCount(hate_top, this, true) == 0) {
+		currently_fleeing = true;
 		StartFleeing();
 	}
 }
 
+
 void Mob::ProcessFlee()
 {
 
@@ -107,11 +127,21 @@ void Mob::ProcessFlee()
 		return;
 	}
 
-	//see if we are still dying, if so, do nothing
-	float fleeratio = GetSpecialAbility(FLEE_PERCENT);
-	fleeratio = fleeratio > 0 ? fleeratio : RuleI(Combat, FleeHPRatio);
-	if (GetHPRatio() < fleeratio)
+	int hpratio = GetIntHPRatio();
+	int fleeratio = GetSpecialAbility(FLEE_PERCENT); // if a special flee_percent exists
+	Mob *hate_top = GetHateTop();
+
+	// If no special flee_percent check for Gray or Other con rates
+	if(GetLevelCon(hate_top->GetLevel(), GetLevel()) == CON_GRAY && fleeratio == 0 && RuleB(Combat, FleeGray)) {
+		fleeratio = RuleI(Combat, FleeGrayHPRatio);
+	} else if(fleeratio == 0) {
+		fleeratio = RuleI(Combat, FleeHPRatio );
+	}
+
+	// Mob is still too low. Keep Running
+	if(hpratio < fleeratio) {
 		return;
+	}
 
 	//we are not dying anymore... see what we do next
 

zone/merc.cpp

@@ -1414,7 +1414,7 @@ void Merc::AI_Process() {
 		if(DivineAura())
 			return;
 
-		int hateCount = entity_list.GetHatedCount(this, nullptr);
+		int hateCount = entity_list.GetHatedCount(this, nullptr, false);
 		if(GetHatedCount() < hateCount) {
 			SetHatedCount(hateCount);