[Core, Creature] Implement Creature/Pet Interrupts

src/server/game/AI/CoreAI/CombatAI.cpp

@@ -110,6 +110,10 @@ void CombatAI::UpdateAI(const uint32 diff)
     else
         DoMeleeAttackIfReady();
 }
+void CombatAI::SpellInterrupted(uint32 spellId, uint32 unTimeMs) 
+{
+    events.RescheduleEvent(spellId, msTime);
+}
 
 /////////////////
 //CasterAI

src/server/game/AI/CoreAI/CombatAI.h

@@ -46,6 +46,7 @@ class CombatAI : public CreatureAI
         void EnterCombat(Unit* who);
         void JustDied(Unit* killer);
         void UpdateAI(const uint32 diff);
+        void SpellInterrupted(uint32 spellId, uint32 unTimeMs);
         static int Permissible(const Creature*);
     protected:
         EventMap events;

src/server/game/AI/CoreAI/UnitAI.h

@@ -241,6 +241,10 @@ class UnitAI
 
         // Called when the unit heals
         virtual void HealDone(Unit* /*done_to*/, uint32& /*addhealth*/) {}
+        
+        // Called when a spell is interrupted by Spell::EffectInterruptCast
+        // Use to reschedule next planned cast of spell.
+        virtual void SpellInterrupted(uint32 /*spellId*/, uint32 /*unTimeMs*/) {}
 
         void AttackStartCaster(Unit* victim, float dist);
 

src/server/game/AI/EventAI/CreatureEventAI.cpp

@@ -1308,7 +1308,7 @@ bool CreatureEventAI::CanCast(Unit* target, SpellInfo const* spell, bool trigger
     //Silenced so we can't cast
     if (!triggered && me->HasFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_SILENCED))
         return false;
-
+    
     //Check for power
     if (!triggered && me->GetPower((Powers)spell->PowerType) < spell->CalcPowerCost(me, spell->GetSchoolMask()))
         return false;
@@ -1316,6 +1316,10 @@ bool CreatureEventAI::CanCast(Unit* target, SpellInfo const* spell, bool trigger
     //Unit is out of range of this spell
     if (!me->IsInRange(target, spell->GetMinRange(false), spell->GetMaxRange(false)))
         return false;
+    
+    //Spell is on cooldown
+    if (me->HasSpellCooldown(spell->Id))
+        return false;
 
     return true;
 }