load mesh data and structure meshes

src/engine/gameManager/BuildingManager.java

@@ -985,8 +985,10 @@ public enum BuildingManager {
             building.buildingMeshes = new ArrayList<>();
             float rotation = building.getRot().getRotation();
             Vector3f buildingLoc = new Vector3f(building.loc.x, building.loc.y, building.loc.z);
-            if (!mesh_triangle_points.containsKey(building.meshUUID))
+
-                return; //no data for this prop ID
+            if(prop_meshes.containsKey(building.meshUUID) == false)
+                return;//no meshes to load for this prop
+
             ArrayList<Integer> meshes = prop_meshes.get(building.meshUUID);
             for (int mesh : meshes) {