Core/Creature: Allow to skip Rate.Corpse.Decay.Looted when calling SetCorpseDelay() (#25989)

Add a second parameter to SetCorpseDelay() that specifies if Rate.Corpse.Decay.Looted setting should be ignored, false by default (aka don't ignore by default).
Add a second parameter to SMART_ACTION_SET_CORPSE_DELAY to specify if Rate.Corpse.Decay.Looted should be included, false by default (aka ignore by default).

(cherry picked from commit d5fc86af8b22fed5b054e51349eb3ab47b06b784)

4 files changed, 12 insertions, 4 deletions

diff --git a/src/server/game/AI/SmartScripts/SmartScript.cpp b/src/server/game/AI/SmartScripts/SmartScript.cpp
index faaacb46d84..c557febba10 100644
--- a/src/server/game/AI/SmartScripts/SmartScript.cpp
+++ b/src/server/game/AI/SmartScripts/SmartScript.cpp
@@ -2241,7 +2241,7 @@ void SmartScript::ProcessAction(SmartScriptHolder& e, Unit* unit, uint32 var0, u
             for (WorldObject* const target : targets)
             {
                 if (IsCreature(target))
-                    target->ToCreature()->SetCorpseDelay(e.action.corpseDelay.timer);
+                    target->ToCreature()->SetCorpseDelay(e.action.corpseDelay.timer, !e.action.corpseDelay.includeDecayRatio);
             }
 
             break;
diff --git a/src/server/game/AI/SmartScripts/SmartScriptMgr.h b/src/server/game/AI/SmartScripts/SmartScriptMgr.h
index 2cdc6d41bb3..969b87b77e8 100644
--- a/src/server/game/AI/SmartScripts/SmartScriptMgr.h
+++ b/src/server/game/AI/SmartScripts/SmartScriptMgr.h
@@ -1143,6 +1143,7 @@ struct SmartAction
         struct
         {
             uint32 timer;
+            uint32 includeDecayRatio;
         } corpseDelay;
 
         struct
diff --git a/src/server/game/Entities/Creature/Creature.cpp b/src/server/game/Entities/Creature/Creature.cpp
index d6df4e1be9c..704de1aad51 100644
--- a/src/server/game/Entities/Creature/Creature.cpp
+++ b/src/server/game/Entities/Creature/Creature.cpp
@@ -305,7 +305,7 @@ bool ForcedDespawnDelayEvent::Execute(uint64 /*e_time*/, uint32 /*p_time*/)
 }
 
 Creature::Creature(bool isWorldObject): Unit(isWorldObject), MapObject(), m_groupLootTimer(0), m_PlayerDamageReq(0), _pickpocketLootRestore(0),
-    m_corpseRemoveTime(0), m_respawnTime(0), m_respawnDelay(300), m_corpseDelay(60), m_wanderDistance(0.0f), m_boundaryCheckTime(2500), m_combatPulseTime(0), m_combatPulseDelay(0), m_reactState(REACT_AGGRESSIVE),
+    m_corpseRemoveTime(0), m_respawnTime(0), m_respawnDelay(300), m_corpseDelay(60), m_ignoreCorpseDecayRatio(false), m_wanderDistance(0.0f), m_boundaryCheckTime(2500), m_combatPulseTime(0), m_combatPulseDelay(0), m_reactState(REACT_AGGRESSIVE),
     m_defaultMovementType(IDLE_MOTION_TYPE), m_spawnId(UI64LIT(0)), m_equipmentId(0), m_originalEquipmentId(0), m_AlreadyCallAssistance(false), m_AlreadySearchedAssistance(false), m_cannotReachTarget(false), m_cannotReachTimer(0),
     m_meleeDamageSchoolMask(SPELL_SCHOOL_MASK_NORMAL), m_originalEntry(0), m_homePosition(), m_transportHomePosition(), m_creatureInfo(nullptr), m_creatureData(nullptr), _waypointPathId(0), _currentWaypointNodeInfo(0, 0),
     m_formation(nullptr), m_triggerJustAppeared(true), m_respawnCompatibilityMode(false), _lastDamagedTime(0),
@@ -2885,7 +2885,8 @@ void Creature::AllLootRemovedFromCorpse()
     if (m_corpseRemoveTime <= now)
         return;
 
-    float decayRate = sWorld->getRate(RATE_CORPSE_DECAY_LOOTED);
+    // Scripts can choose to ignore RATE_CORPSE_DECAY_LOOTED by calling SetCorpseDelay(timer, true)
+    float decayRate = m_ignoreCorpseDecayRatio ? 1.f : sWorld->getRate(RATE_CORPSE_DECAY_LOOTED);
 
     // corpse skinnable, but without skinning flag, and then skinned, corpse will despawn next update
     if (loot.loot_type == LOOT_SKINNING)
diff --git a/src/server/game/Entities/Creature/Creature.h b/src/server/game/Entities/Creature/Creature.h
index 61f3e64a41b..7fb73e4d9ed 100644
--- a/src/server/game/Entities/Creature/Creature.h
+++ b/src/server/game/Entities/Creature/Creature.h
@@ -99,7 +99,12 @@ class TC_GAME_API Creature : public Unit, public GridObject<Creature>, public Ma
         void GetRespawnPosition(float &x, float &y, float &z, float* ori = nullptr, float* dist = nullptr) const;
         bool IsSpawnedOnTransport() const { return m_creatureData && m_creatureData->mapId != GetMapId(); }
 
-        void SetCorpseDelay(uint32 delay) { m_corpseDelay = delay; }
+        void SetCorpseDelay(uint32 delay, bool ignoreCorpseDecayRatio = false)
+        {
+            m_corpseDelay = delay;
+            if (ignoreCorpseDecayRatio)
+                m_ignoreCorpseDecayRatio = true;
+        }
         uint32 GetCorpseDelay() const { return m_corpseDelay; }
         bool IsRacialLeader() const { return GetCreatureTemplate()->RacialLeader; }
         bool IsCivilian() const { return (GetCreatureTemplate()->flags_extra & CREATURE_FLAG_EXTRA_CIVILIAN) != 0; }
@@ -396,6 +401,7 @@ class TC_GAME_API Creature : public Unit, public GridObject<Creature>, public Ma
         time_t m_respawnTime;                               // (secs) time of next respawn
         uint32 m_respawnDelay;                              // (secs) delay between corpse disappearance and respawning
         uint32 m_corpseDelay;                               // (secs) delay between death and corpse disappearance
+        bool m_ignoreCorpseDecayRatio;
         float m_wanderDistance;
         uint32 m_boundaryCheckTime;                         // (msecs) remaining time for next evade boundary check
         uint32 m_combatPulseTime;                           // (msecs) remaining time for next zone-in-combat pulse