Added Sprite.fixedToCamera, fixed Angular Velocity and Acceleration, fixed jittery Camera, added skipQuadTree flag and created lots more examples.

src/core/Camera.js

@@ -164,8 +164,7 @@ Phaser.Camera.prototype = {
     */
     focusOnXY: function (x, y) {
 
-        this.view.x = Math.round(x - this.view.halfWidth);
-        this.view.y = Math.round(y - this.view.halfHeight);
+        this.setPosition(Math.round(x - this.view.halfWidth), Math.round(y - this.view.halfHeight));
 
     },
 
@@ -185,6 +184,16 @@ Phaser.Camera.prototype = {
             this.checkBounds();
         }
 
+        if (this.view.x !== -this.displayObject.position.x)
+        {
+            this.displayObject.position.x = -this.view.x;
+        }
+
+        if (this.view.y !== -this.displayObject.position.y)
+        {
+            this.displayObject.position.y = -this.view.y;
+        }
+
     },
 
     updateTarget: function () {
@@ -283,9 +292,6 @@ Phaser.Camera.prototype = {
         this.view.x = x;
         this.view.y = y;
 
-        this.displayObject.x = -x;
-        this.displayObject.y = -y;
-
         if (this.bounds)
         {
             this.checkBounds();
@@ -323,7 +329,6 @@ Object.defineProperty(Phaser.Camera.prototype, "x", {
     set: function (value) {
 
         this.view.x = value;
-        this.displayObject.position.x = -value;
 
         if (this.bounds)
         {
@@ -347,7 +352,6 @@ Object.defineProperty(Phaser.Camera.prototype, "y", {
     set: function (value) {
 
         this.view.y = value;
-        this.displayObject.position.y = -value;
 
         if (this.bounds)
         {

src/core/World.js

@@ -71,8 +71,6 @@ Phaser.World.prototype.boot = function () {
 */
 Phaser.World.prototype.update = function () {
 
-	this.camera.update();
-
 	this.currentRenderOrderID = 0;
 
 	if (this.game.stage._stage.first._iNext)
@@ -104,6 +102,8 @@ Phaser.World.prototype.update = function () {
 */
 Phaser.World.prototype.postUpdate = function () {
 
+    this.camera.update();
+
     if (this.game.stage._stage.first._iNext)
     {
         var currentNode = this.game.stage._stage.first._iNext;