Reimplement WorldObject::IsInBetween() to work as intented.

Closes #2163 and #1329

1 files changed, 11 insertions, 6 deletions

diff --git a/src/server/game/Entities/Object/Object.cpp b/src/server/game/Entities/Object/Object.cpp
index 4305f90d7a3..8bd464a4820 100755
--- a/src/server/game/Entities/Object/Object.cpp
+++ b/src/server/game/Entities/Object/Object.cpp
@@ -1526,17 +1526,22 @@ bool Position::HasInArc(float arc, const Position* obj) const
 
 bool WorldObject::IsInBetween(const WorldObject* obj1, const WorldObject* obj2, float size) const
 {
-    if (GetPositionX() > std::max(obj1->GetPositionX(), obj2->GetPositionX())
-        || GetPositionX() < std::min(obj1->GetPositionX(), obj2->GetPositionX())
-        || GetPositionY() > std::max(obj1->GetPositionY(), obj2->GetPositionY())
-        || GetPositionY() < std::min(obj1->GetPositionY(), obj2->GetPositionY()))
+    if (!obj1 || !obj2)
+        return false;
+
+    float dist = GetExactDist2d(obj1->GetPositionX(), obj1->GetPositionY());
+
+    // not using sqrt() for performance
+    if ((dist * dist) >= obj1->GetExactDist2dSq(obj2->GetPositionX(), obj2->GetPositionY()))
         return false;
 
     if (!size)
         size = GetObjectSize() / 2;
 
-    float angle = obj1->GetAngle(this) - obj1->GetAngle(obj2);
-    return fabs(sin(angle)) * GetExactDist2d(obj1->GetPositionX(), obj1->GetPositionY()) < size;
+    float angle = obj1->GetAngle(obj2);
+
+    // not using sqrt() for performance
+    return (size * size) >= GetExactDist2dSq(obj1->GetPositionX() + cos(angle) * dist, obj1->GetPositionY() + sin(angle) * dist);
 }
 
 bool WorldObject::isInFront(WorldObject const* target, float distance,  float arc) const