From 28532bc1e0e0268af0555a0168cbe72566e80c38 Mon Sep 17 00:00:00 2001
From: Andrew <47818697+Nyeriah@users.noreply.github.com>
Date: Sun, 14 Sep 2025 18:48:33 -0300
Subject: feat(Core/AI): Allow preventing health check events while casting
 (#22897)

---
 src/server/game/AI/ScriptedAI/ScriptedCreature.cpp | 16 ++++++++++------
 src/server/game/AI/ScriptedAI/ScriptedCreature.h   |  7 ++++---
 2 files changed, 14 insertions(+), 9 deletions(-)

(limited to 'src/server')

diff --git a/src/server/game/AI/ScriptedAI/ScriptedCreature.cpp b/src/server/game/AI/ScriptedAI/ScriptedCreature.cpp
index b112332171..1b6733e503 100644
--- a/src/server/game/AI/ScriptedAI/ScriptedCreature.cpp
+++ b/src/server/game/AI/ScriptedAI/ScriptedCreature.cpp
@@ -751,6 +751,10 @@ void BossAI::DamageTaken(Unit* attacker, uint32& damage, DamageEffectType damage
     ScriptedAI::DamageTaken(attacker, damage, damagetype, damageSchoolMask);
 
     if (_nextHealthCheck._valid)
+    {
+        if (!_nextHealthCheck._allowedWhileCasting && me->HasUnitState(UNIT_STATE_CASTING))
+            return;
+
         if (me->HealthBelowPctDamaged(_nextHealthCheck._healthPct, damage))
         {
             _nextHealthCheck._exec();
@@ -764,6 +768,7 @@ void BossAI::DamageTaken(Unit* attacker, uint32& damage, DamageEffectType damage
             if (!_healthCheckEvents.empty())
                 _nextHealthCheck = _healthCheckEvents.front();
         }
+    }
 }
 
 /**
@@ -771,19 +776,18 @@ void BossAI::DamageTaken(Unit* attacker, uint32& damage, DamageEffectType damage
  *
  * @param healthPct The health percent at which the code will be executed.
  * @param exec The fuction to be executed.
+ * @param allowedWhileCasting If false, the event will not be checked while the creature is casting.
  */
-void BossAI::ScheduleHealthCheckEvent(uint32 healthPct, std::function<void()> exec)
+void BossAI::ScheduleHealthCheckEvent(uint32 healthPct, std::function<void()> exec, bool allowedWhileCasting /*=true*/)
 {
-    _healthCheckEvents.push_back(HealthCheckEventData(healthPct, exec));
+    _healthCheckEvents.push_back(HealthCheckEventData(healthPct, exec, true, allowedWhileCasting));
     _nextHealthCheck = _healthCheckEvents.front();
 };
 
-void BossAI::ScheduleHealthCheckEvent(std::initializer_list<uint8> healthPct, std::function<void()> exec)
+void BossAI::ScheduleHealthCheckEvent(std::initializer_list<uint8> healthPct, std::function<void()> exec, bool allowedWhileCasting /*=true*/)
 {
     for (auto const& checks : healthPct)
-    {
-        _healthCheckEvents.push_back(HealthCheckEventData(checks, exec));
-    }
+        _healthCheckEvents.push_back(HealthCheckEventData(checks, exec, true, allowedWhileCasting));
 
     _nextHealthCheck = _healthCheckEvents.front();
 }
diff --git a/src/server/game/AI/ScriptedAI/ScriptedCreature.h b/src/server/game/AI/ScriptedAI/ScriptedCreature.h
index 9cb004a894..82f50542b3 100644
--- a/src/server/game/AI/ScriptedAI/ScriptedCreature.h
+++ b/src/server/game/AI/ScriptedAI/ScriptedCreature.h
@@ -456,11 +456,12 @@ private:
 
 struct HealthCheckEventData
 {
-    HealthCheckEventData(uint8 healthPct, std::function<void()> exec, bool valid = true) : _healthPct(healthPct), _exec(exec), _valid(valid) { };
+    HealthCheckEventData(uint8 healthPct, std::function<void()> exec, bool valid = true, bool allowedWhileCasting = true) : _healthPct(healthPct), _exec(exec), _valid(valid), _allowedWhileCasting(allowedWhileCasting) { };
 
     uint8 _healthPct;
     std::function<void()> _exec;
     bool _valid;
+    bool _allowedWhileCasting;
 };
 
 class BossAI : public ScriptedAI
@@ -482,8 +483,8 @@ public:
 
     void UpdateAI(uint32 diff) override;
 
-    void ScheduleHealthCheckEvent(uint32 healthPct, std::function<void()> exec);
-    void ScheduleHealthCheckEvent(std::initializer_list<uint8> healthPct, std::function<void()> exec);
+    void ScheduleHealthCheckEvent(uint32 healthPct, std::function<void()> exec, bool allowedWhileCasting = true);
+    void ScheduleHealthCheckEvent(std::initializer_list<uint8> healthPct, std::function<void()> exec, bool allowedWhileCasting = true);
 
     // @brief Casts the spell after the fixed time and says the text id if provided. Timer will run even if the creature is casting or out of combat.
     // @param spellId The spell to cast.
-- 
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