[Bots] Change how bots handle blind (#5104)

zone/bot.cpp

@@ -3432,6 +3432,10 @@ bool Bot::CheckIfIncapacitated() {
 	}
 
 	if (currently_fleeing) {
+		if (!FindType(SpellEffect::Fear)) { // Blinded
+			return BotProcessBlind();
+		}
+
 		if (RuleB(Combat, EnableFearPathing) && AI_movement_timer->Check()) {
 			// Check if we have reached the last fear point
 			if (DistanceNoZ(glm::vec3(GetX(), GetY(), GetZ()), m_FearWalkTarget) <= 5.0f) {
@@ -3453,6 +3457,23 @@ bool Bot::CheckIfIncapacitated() {
 	return false;
 }
 
+bool Bot::BotProcessBlind() {
+	if (m_combat_jitter_timer.Check() && zone->random.Int(1, 100) <= RuleI(Bots, BlindMoveChance)) {
+		Mob* tar = GetTarget() ? GetTarget() : GetBotOwner();
+
+		if (tar) {
+			glm::vec3 Goal = tar->GetPosition();
+
+			RunTo(Goal.x, Goal.y, Goal.z);
+			SetCombatJitter();
+		}
+
+		return true;
+	}
+
+	return false;
+}
+
 void Bot::SetBerserkState() {// Berserk updates should occur if primary AI criteria are met
 	if (GetClass() == Class::Warrior || GetClass() == Class::Berserker) {
 		if (!berserk && GetHPRatio() < RuleI(Combat, BerserkerFrenzyStart)) {

zone/bot.h

@@ -542,7 +542,7 @@ public:
 	bool IsValidMezTarget(Mob* owner, Mob* npc, uint16 spell_id);
 
 	// Cast checks
-	bool PrecastChecks(Mob* tar, uint16 spell_type);	
+	bool PrecastChecks(Mob* tar, uint16 spell_type);
 	bool CastChecks(uint16 spell_id, Mob* tar, uint16 spell_type, bool prechecks = false, bool ae_check = false);
 	bool IsImmuneToBotSpell(uint16 spell_id, Mob* caster);
 	bool CanCastSpellType(uint16 spell_type, uint16 spell_id, Mob* tar);
@@ -1055,6 +1055,7 @@ public:
 	bool BotCastCure(Mob* tar, uint8 bot_class, BotSpell& bot_spell, uint16 spell_type);
 
 	bool CheckIfIncapacitated();
+	bool BotProcessBlind();
 	bool IsAIProcessValid(const Client* bot_owner, const Group* bot_group, const Raid* raid);
 
 	Client* SetLeashOwner(Client* bot_owner, Group* bot_group, Raid* raid, uint32 r_group) const;

zone/spell_effects.cpp

@@ -1362,6 +1362,10 @@ bool Mob::SpellEffect(Mob* caster, uint16 spell_id, float partial, int level_ove
 						}
 					}
 				}
+				else if (IsBot()) {
+					currently_fleeing = true;
+					CastToBot()->BotProcessBlind();
+				}
 				else if (!IsClient()) {
 					CalculateNewFearpoint();
 				}