Core/Vmaps: Don't ignore gameobject model rotation when calculating liquid level

Author: Shauren

src/common/Collision/Models/GameObjectModel.cpp

@@ -219,8 +219,7 @@ bool GameObjectModel::GetLiquidLevel(G3D::Vector3 const& point, VMAP::LocationIn
     if (info.hitModel->GetLiquidLevel(pModel, zDist))
     {
         // calculate world height (zDist in model coords):
-        // assume WMO not tilted (wouldn't make much sense anyway)
-        liqHeight = zDist * iScale + iPos.z;
+        liqHeight = (Vector3(pModel.x, pModel.y, zDist) * iInvRot * iScale + iPos).z;
         return true;
     }
     return false;