Core/Movement: Add more LOS checks (#23991)

Add more LOS checks to ensure Units don't cross trees/walls when fleeing/moving

(cherry picked from commit 13ad8b66d9f4abcb55b4369a24d89d8cde3ca361)

2 files changed, 16 insertions, 0 deletions

diff --git a/src/server/game/Movement/MovementGenerators/ConfusedMovementGenerator.cpp b/src/server/game/Movement/MovementGenerators/ConfusedMovementGenerator.cpp
index b7a9ab32f13..9296cddc242 100755
--- a/src/server/game/Movement/MovementGenerators/ConfusedMovementGenerator.cpp
+++ b/src/server/game/Movement/MovementGenerators/ConfusedMovementGenerator.cpp
@@ -92,6 +92,14 @@ bool ConfusedMovementGenerator<T>::DoUpdate(T* owner, uint32 diff)
         float angle = frand(0.0f, 1.0f) * float(M_PI) * 2.0f;
         owner->MovePositionToFirstCollision(destination, distance, angle);
 
+        // Check if the destination is in LOS
+        if (!owner->IsWithinLOS(destination.GetPositionX(), destination.GetPositionY(), destination.GetPositionZ()))
+        {
+            // Retry later on
+            _timer.Reset(200);
+            return true;
+        }
+
         if (!_path)
         {
             _path = std::make_unique<PathGenerator>(owner);
diff --git a/src/server/game/Movement/MovementGenerators/RandomMovementGenerator.cpp b/src/server/game/Movement/MovementGenerators/RandomMovementGenerator.cpp
index 15071757069..cd32124df2d 100644
--- a/src/server/game/Movement/MovementGenerators/RandomMovementGenerator.cpp
+++ b/src/server/game/Movement/MovementGenerators/RandomMovementGenerator.cpp
@@ -123,6 +123,14 @@ void RandomMovementGenerator<Creature>::SetRandomLocation(Creature* owner)
     float angle = frand(0.f, 1.f) * float(M_PI) * 2.f;
     owner->MovePositionToFirstCollision(position, distance, angle);
 
+    // Check if the destination is in LOS
+    if (!owner->IsWithinLOS(position.GetPositionX(), position.GetPositionY(), position.GetPositionZ()))
+    {
+        // Retry later on
+        _timer.Reset(200);
+        return;
+    }
+
     uint32 resetTimer = roll_chance_i(50) ? urand(5000, 10000) : urand(1000, 2000);
 
     if (!_path)