Merge branch '3.3.5-bossboundary' into 3.3.5-base (PR #16089)

(cherry picked from commit 5b8b8c653039ec2add0b3a66468abb85e6f35054)

1 files changed, 22 insertions, 3 deletions

diff --git a/src/server/game/AI/CreatureAI.h b/src/server/game/AI/CreatureAI.h
index 0a2cce723dc..3b7c489e018 100644
--- a/src/server/game/AI/CreatureAI.h
+++ b/src/server/game/AI/CreatureAI.h
@@ -21,6 +21,7 @@
 
 #include "Creature.h"
 #include "UnitAI.h"
+#include "AreaBoundary.h"
 #include "Common.h"
 
 class WorldObject;
@@ -63,6 +64,7 @@ enum SCEquip
     EQUIP_UNEQUIP   = 0
 };
 
+typedef std::set<AreaBoundary const*> CreatureBoundary;
 class CreatureAI : public UnitAI
 {
     protected:
@@ -77,10 +79,20 @@ class CreatureAI : public UnitAI
         Creature* DoSummon(uint32 entry, WorldObject* obj, float radius = 5.0f, uint32 despawnTime = 30000, TempSummonType summonType = TEMPSUMMON_CORPSE_TIMED_DESPAWN);
         Creature* DoSummonFlyer(uint32 entry, WorldObject* obj, float flightZ, float radius = 5.0f, uint32 despawnTime = 30000, TempSummonType summonType = TEMPSUMMON_CORPSE_TIMED_DESPAWN);
 
+        bool CheckBoundary(Position* who = nullptr) const;
+        void SetBoundary(CreatureBoundary const* boundary) { _boundary = boundary; CheckInRoom(); }
     public:
+        enum EvadeReason
+        {
+            EVADE_REASON_NO_HOSTILES,       // the creature's threat list is empty
+            EVADE_REASON_BOUNDARY,          // the creature has moved outside its evade boundary
+            EVADE_REASON_SEQUENCE_BREAK,    // this is a boss and the pre-requisite encounters for engaging it are not defeated yet
+            EVADE_REASON_OTHER
+        };
+
         void Talk(uint8 id, WorldObject const* whisperTarget = nullptr);
 
-        explicit CreatureAI(Creature* creature) : UnitAI(creature), me(creature), m_MoveInLineOfSight_locked(false) { }
+        explicit CreatureAI(Creature* creature) : UnitAI(creature), me(creature), _boundary(nullptr), m_MoveInLineOfSight_locked(false) { }
 
         virtual ~CreatureAI() { }
 
@@ -96,7 +108,7 @@ class CreatureAI : public UnitAI
         virtual bool CanRespawn() { return true; }
 
         // Called for reaction at stopping attack at no attackers or targets
-        virtual void EnterEvadeMode();
+        virtual void EnterEvadeMode(EvadeReason why = EVADE_REASON_OTHER);
 
         // Called for reaction at enter to combat if not in combat yet (enemy can be NULL)
         virtual void EnterCombat(Unit* /*victim*/) { }
@@ -174,10 +186,17 @@ class CreatureAI : public UnitAI
 
         virtual bool CanSeeAlways(WorldObject const* /*obj*/) { return false; }
 
+        // intended for encounter design/debugging. do not use for other purposes. expensive.
+        int32 VisualizeBoundary(uint32 duration, Unit* owner=nullptr, bool fill=false) const;
+        virtual bool CheckInRoom();
+        CreatureBoundary const* GetBoundary() const { return _boundary; }
+
     protected:
         virtual void MoveInLineOfSight(Unit* /*who*/);
 
-        bool _EnterEvadeMode();
+        bool _EnterEvadeMode(EvadeReason why = EVADE_REASON_OTHER);
+
+        CreatureBoundary const* _boundary;
 
     private:
         bool m_MoveInLineOfSight_locked;