Core/AreaTrigger: Fix crashes happening if areatrigger is despawned in OnUnitEnter script

Closes #31340

1 files changed, 8 insertions, 0 deletions

diff --git a/src/server/game/Entities/AreaTrigger/AreaTrigger.cpp b/src/server/game/Entities/AreaTrigger/AreaTrigger.cpp
index 74aa8596a58..1ed4b4d06ca 100644
--- a/src/server/game/Entities/AreaTrigger/AreaTrigger.cpp
+++ b/src/server/game/Entities/AreaTrigger/AreaTrigger.cpp
@@ -894,6 +894,14 @@ void AreaTrigger::HandleUnitEnter(Unit* unit)
     DoActions(unit);
 
     _ai->OnUnitEnter(unit);
+
+    // OnUnitEnter script can despawn this areatrigger
+    if (!IsInWorld())
+        return;
+
+    // Register areatrigger in Unit after actions/scripts to allow them to determine
+    // if the unit is in one or more areatriggers with the same id
+    // without forcing every script to have additional logic excluding this areatrigger
     unit->EnterAreaTrigger(this);
 }