diff --git a/src/game-lib-entity.js b/src/game-lib-entity.js
index d1b3b2d..3509642 100644
--- a/src/game-lib-entity.js
+++ b/src/game-lib-entity.js
@@ -132,9 +132,9 @@ GameLib.D3.Entity.prototype.register = function(
     parentScene
 ) {
     // this.parentScene = parentScene;
-
-    // if (this.id != null && parentScene.meshIdToMesh[this.id]) {
-    //     parentScene.instance.add(parentScene.meshIdToMesh[this.id]);
+    //
+    // if (this.mesh && this.mesh.id != null && parentScene.meshIdToMesh[this.mesh.id]) {
+    //     parentScene.instance.add(parentScene.meshIdToMesh[this.mesh.id]);
     //     this.mesh = parentScene.meshIdToMesh[this.id];
     // }
 
diff --git a/src/game-lib-scene.js b/src/game-lib-scene.js
index 1c93159..9274614 100644
--- a/src/game-lib-scene.js
+++ b/src/game-lib-scene.js
@@ -97,58 +97,58 @@ GameLib.D3.Scene.API = function(
         name = 'unnamed';
     }
     this.name = name;
-    
-    if (typeof meshes == 'undefined') {
+
+    if (GameLib.D3.Utils.UndefinedOrNull(meshes)) {
         meshes = [];
     }
     this.meshes = meshes;
 
-    if (typeof quaternion == 'undefined') {
+    if (GameLib.D3.Utils.UndefinedOrNull(quaternion)) {
         quaternion = new GameLib.D3.Vector4();
     }
     this.quaternion = quaternion;
 
-    if (typeof position == 'undefined') {
-        position = new GameLib.D3.Vector3(0,0,0);
+    if (GameLib.D3.Utils.UndefinedOrNull(position)) {
+        position = new GameLib.D3.Vector3();
     }
     this.position = position;
 
-    if (typeof rotation == 'undefined') {
-        rotation = new GameLib.D3.Vector3(0,0,0);
+    if (GameLib.D3.Utils.UndefinedOrNull(rotation)) {
+        rotation = new GameLib.D3.Vector3();
     }
     this.rotation = rotation;
 
-    if (typeof scale == 'undefined') {
+    if (GameLib.D3.Utils.UndefinedOrNull(scale)) {
         scale = new GameLib.D3.Vector3(1,1,1);
     }
     this.scale = scale;
 
-    if (typeof parentSceneId == 'undefined') {
+    if (GameLib.D3.Utils.UndefinedOrNull(parentSceneId)) {
         parentSceneId = null;
     }
     this.parentSceneId = parentSceneId;
 
-    if (typeof lights == 'undefined') {
+    if (GameLib.D3.Utils.UndefinedOrNull(lights)) {
         lights = [];
     }
     this.lights = lights;
 
-    if (typeof worlds == 'undefined') {
+    if (GameLib.D3.Utils.UndefinedOrNull(worlds)) {
         worlds = [];
     }
     this.worlds = worlds;
 
-    if (typeof entities == 'undefined') {
+    if (GameLib.D3.Utils.UndefinedOrNull(entities)) {
         entities = [];
     }
     this.entities = entities;
 
-    if (typeof components == 'undefined') {
+    if (GameLib.D3.Utils.UndefinedOrNull(components)) {
         components = [];
     }
     this.components = components;
 
-    if (typeof shapes == 'undefined') {
+    if (GameLib.D3.Utils.UndefinedOrNull(shapes)) {
         shapes = [];
     }
     this.shapes = shapes;
diff --git a/src/game-lib-vector-3.js b/src/game-lib-vector-3.js
index 40399d5..1fa1fa1 100644
--- a/src/game-lib-vector-3.js
+++ b/src/game-lib-vector-3.js
@@ -19,6 +19,8 @@ GameLib.D3.Vector3.Runtime = function RuntimeVector3(graphics, parentObject, api
         }
     }
 
+    GameLib.D3.Utils.Extend(GameLib.D3.Vector3.Runtime, GameLib.D3.Vector3);
+
     this.apiVector = apiVector;
 
     this.graphics = graphics;
@@ -33,7 +35,7 @@ GameLib.D3.Vector3.Runtime = function RuntimeVector3(graphics, parentObject, api
 };
 
 GameLib.D3.Vector3.Runtime.prototype.createInstance = function() {
-    return this.graphics.instance.Vector3(this.x, this.y, this.z);
+    return new this.graphics.instance.Vector3(this.x, this.y, this.z);
 };
 
 GameLib.D3.Vector3.Runtime.prototype.updateInstance = function() {