Core/SAI: Implemented SMART_EVENT_IS_BEHIND_TARGET, it is triggered when the creature is behind its current target.

Signed-off-by: Manuel Carrasco <manue.l@live.com.ar>

3 files changed, 30 insertions, 4 deletions

diff --git a/src/server/game/AI/SmartScripts/SmartScript.cpp b/src/server/game/AI/SmartScripts/SmartScript.cpp
index 48517c60a9b..2ab7c9fc11e 100644
--- a/src/server/game/AI/SmartScripts/SmartScript.cpp
+++ b/src/server/game/AI/SmartScripts/SmartScript.cpp
@@ -2231,8 +2231,6 @@ void SmartScript::ProcessEvent(SmartScriptHolder& e, Unit* unit, uint32 var0, ui
         {
             if (!me || !me->getVictim())
                 return;
-            if (!me)
-                return;
             uint32 count = me->getVictim()->GetAuraCount(e.event.aura.spell);
             if (count < e.event.aura.count)
                 return;
@@ -2263,6 +2261,21 @@ void SmartScript::ProcessEvent(SmartScriptHolder& e, Unit* unit, uint32 var0, ui
         case SMART_EVENT_FOLLOW_COMPLETED:
             ProcessAction(e, unit, var0, var1, bvar, spell, gob);
             break;
+        case SMART_EVENT_IS_BEHIND_TARGET:
+            {
+                if (!me)
+                    return;
+
+                if (Unit* victim = me->getVictim())
+                {
+                    if (!victim->HasInArc(static_cast<float>(M_PI), me))
+                    {
+                        ProcessAction(e, victim);
+                        RecalcTimer(e, e.event.behindTarget.cooldownMin, e.event.behindTarget.cooldownMax);
+                    }
+                }
+                break;
+            }
         case SMART_EVENT_RECEIVE_EMOTE:
             if (e.event.emote.emote == var0)
             {
@@ -2531,6 +2544,7 @@ void SmartScript::UpdateTimer(SmartScriptHolder& e, uint32 const diff)
             case SMART_EVENT_FRIENDLY_MISSING_BUFF:
             case SMART_EVENT_HAS_AURA:
             case SMART_EVENT_TARGET_BUFFED:
+            case SMART_EVENT_IS_BEHIND_TARGET:
             {
                 ProcessEvent(e);
                 if (e.GetScriptType() == SMART_SCRIPT_TYPE_TIMED_ACTIONLIST)
diff --git a/src/server/game/AI/SmartScripts/SmartScriptMgr.cpp b/src/server/game/AI/SmartScripts/SmartScriptMgr.cpp
index 58e3dde547e..ac0f5d1a2be 100644
--- a/src/server/game/AI/SmartScripts/SmartScriptMgr.cpp
+++ b/src/server/game/AI/SmartScripts/SmartScriptMgr.cpp
@@ -450,6 +450,10 @@ bool SmartAIMgr::IsEventValid(SmartScriptHolder &e)
                 if (!IsSpellValid(e, e.event.dummy.spell)) return false;
                 if (e.event.dummy.effIndex > EFFECT_2) return false;
                 break;
+            case SMART_EVENT_IS_BEHIND_TARGET:
+                if (!IsMinMaxValid(e, e.event.behindTarget.cooldownMin, e.event.behindTarget.cooldownMax))
+                    return false;
+                break;
             case SMART_EVENT_TIMED_EVENT_TRIGGERED:
             case SMART_EVENT_INSTANCE_PLAYER_ENTER:
             case SMART_EVENT_TRANSPORT_RELOCATE:
diff --git a/src/server/game/AI/SmartScripts/SmartScriptMgr.h b/src/server/game/AI/SmartScripts/SmartScriptMgr.h
index 7095acb8c30..37aa5588125 100644
--- a/src/server/game/AI/SmartScripts/SmartScriptMgr.h
+++ b/src/server/game/AI/SmartScripts/SmartScriptMgr.h
@@ -151,8 +151,9 @@ enum SMART_EVENT
     SMART_EVENT_GOSSIP_HELLO             = 64,      //1             // none
     SMART_EVENT_FOLLOW_COMPLETED         = 65,      //1             // none
     SMART_EVENT_DUMMY_EFFECT             = 66,      //1             // spellId, effectIndex
+    SMART_EVENT_IS_BEHIND_TARGET         = 67,      //1             // cooldownMin, CooldownMax
 
-    SMART_EVENT_END                      = 67,
+    SMART_EVENT_END                      = 68,
 };
 
 struct SmartEvent
@@ -333,6 +334,12 @@ struct SmartEvent
 
         struct
         {
+            uint32 cooldownMin;
+            uint32 cooldownMax;
+        } behindTarget;
+
+        struct
+        {
             uint32 param1;
             uint32 param2;
             uint32 param3;
@@ -1094,8 +1101,9 @@ const uint32 SmartAIEventMask[SMART_EVENT_END][2] =
     {SMART_EVENT_GOSSIP_SELECT,             SMART_SCRIPT_TYPE_MASK_CREATURE + SMART_SCRIPT_TYPE_MASK_GAMEOBJECT },
     {SMART_EVENT_JUST_CREATED,              SMART_SCRIPT_TYPE_MASK_CREATURE + SMART_SCRIPT_TYPE_MASK_GAMEOBJECT },
     {SMART_EVENT_GOSSIP_HELLO,              SMART_SCRIPT_TYPE_MASK_CREATURE + SMART_SCRIPT_TYPE_MASK_GAMEOBJECT },
-    {SMART_EVENT_FOLLOW_COMPLETED,           SMART_SCRIPT_TYPE_MASK_CREATURE },
+    {SMART_EVENT_FOLLOW_COMPLETED,          SMART_SCRIPT_TYPE_MASK_CREATURE },
     {SMART_EVENT_DUMMY_EFFECT,              SMART_SCRIPT_TYPE_MASK_CREATURE },
+    {SMART_EVENT_IS_BEHIND_TARGET,          SMART_SCRIPT_TYPE_MASK_CREATURE }
 
 };