Subscribe to GameFromScratch on YouTube Support GameFromScratch on Patreon
29. March 2015


The popular HTML5 library Phaser have just released 2.3.  It’s not a huge new functionality release, but it’s got some major architecture changes that will affect you greatly if you are a Phaser user.  First off, they went down a more modular approach leading to fewer god classes.  This is aPhaser 2.3.0 good thing™.  Then thanks to this redesign, they also made the Phaser build process different, allow you to disuse unneeded portions.


From the release notes:


Significant Updates



All of the core Game Objects have received an important internal restructuring. We have moved all of the common functions to a new set of Component classes. They cover functionality such as 'Crop', 'Physics Body', 'InCamera' and more. You can find the source code to each component in the src/gameobjects/components folder of the repo.

All of the Game Object classes have been restructured to use the new component approach. This puts an end to the "God classes" structure we had before and removes literally hundreds of lines of duplicate code. It also allowed us to add features to Game Objects; for example Bitmap Text objects are now full-class citizens with regard to physics capabilities.

Although this was a big internal shift from an API point of view not much changed - you still access the same methods and properties in the same way as before. Phaser is just a lot leaner under the hood now.

It's worth mentioning that from a JavaScript perspective components are mixins applied to the core game objects when Phaser is instantiated. They are not added at run-time or are dynamic (they never get removed from an object once added for example). Please understand that this is by design.

You can create your own custom Phaser classes, with your own set of active components by copying any of the pre-existing Game Objects and modifying them.



As a result of the shift to components we went through the entire source base and optimised everything we could. Redundant paths were removed, debug flags removed and new stub classes and hooks were created. What this means is that it's now easier than ever to "disable" parts of Phaser and build your own custom version.

We have always included a couple of extra custom builds with Phaser. For example a build without P2 Physics included. But now you can strip out lots of additional features you may not require, saving hundreds of KB from your build file in the process. Don't use any Sound in your game? Then you can now exclude the entire sound system. Don't need Keyboard support? That can be stripped out too.

As a result of this work the minimum build size of Phaser is now just 83KB (minified and gzipped).

Please see this tutorial on how to create custom builds.



We've updated the core of Arcade Physics in a number of significant ways.

First we've dropped lots of internal private vars and moved to using non-cached local vars. Array lengths are no longer cached and we've implemented physicsType properties on Game Objects to speed-up the core World collideHandler. All of these small changes have lead to a nice improvement in speed as a result, and also allows us to now offer things like physics enabled BitmapText objects.

More importantly we're now using a spacial pre-sort for all Sprite vs. Group and Group vs. Group collisions. You can define the direction the sort will prioritize via the new sortDirection property. By default it is set to Phaser.Physics.Arcade.LEFT_RIGHT. For example if you are making a horizontally scrolling game, where the player starts on the left of the world and moves to the right, then this sort order will allow the physics system to quickly eliminate any objects to the right of the player bounds. This cuts down on the sheer volume of actual collision checks needing to be made. In a densely populated level it can improve the fps rate dramatically.

There are 3 other directions available (RIGHT_LEFT, TOP_BOTTOM and BOTTOM_TOP) and which one you need will depend on your game type. If you were making a vertically scrolling shoot-em-up then you'd pick BOTTOM_TOP so it sorts all objects above and can bail out quickly. There is also SORT_NONE if you would like to pre-sort the Groups yourself or disable this feature.

Another handy feature is that you can switch the sortDirection at run-time with no loss of performance. Just make sure you do it before running any collision checks. So if you had a large 8-way scrolling world you could set the sortDirection to match the direction the player was moving in and adjust it in real-time, getting the benefits as you go. My thanks to Aaron Lahman for inspiring this update.



The Phaser.Loader has been updated to support parallel downloads which is now enabled by default (you can toggle it via the Loader.enableParallel flag) as well as adding future extensibility points with a pack/file unified filelist and an inflight queue.

There are no known incompatibilities with the previous Loader. Be aware that with parallel downloading enabled the order of the Loader events may vary (as can be seen in the "Load Events" example).

The parallel file concurrency limit is available in Loader.maxParallelDownloads and is set to 4 by default. Under simulated slower network connections parallel loading was a good bit faster than sequential loading. Even under a direct localhost connection parallel loading was never slower, but benefited most when loading many small assets (large assets are more limited by bandwidth); both results are fairly expected.

The Loader now supports synchronization points. An asset marked as a synchronization point must be loaded (or fail to load) before any subsequent assets can be loaded. This is enabled by using the withSyncPoint and addSyncPoint methods. Packs ('packfile' files) and Scripts ('script' files) are treated as synchronization points by default. This allows parallel downloads in general while allowing synchronization of select resources if required (packs, and potentially other assets in the future, can load-around synchronization points if they are written to delay final 'loading').

Additional error handling / guards have been added, and the reported error message has been made more consistent. Invalid XML (when loading) no longer throws an exception but fails the particular file/asset that was being loaded.

Some public methods/properties have been marked as protected, but no (except in case of a should-have-been-private-method) public-facing interfaces have been removed. Some private methods have been renamed and/or removed.

A new XHR object is created for each relevant asset (as there must be a different XHR for each asset loaded in parallel). Online searches indicated that there was no relevant benefit of XHR (as a particular use-case) re-use; and time will be dominated with the resource fetch. With the new flight queue an XHR cache could be re-added, at the cost of some complexity.

The URL is always transformed through transformUrl, which can make adding some one-off special cases like #1355 easier to deal with.

This also incorporates the fast-cache path for Images tags that can greatly speed up the responsiveness of image loading.

Loader.resetLocked is a boolean that allows you to control what happens when the loader is reset, which happens automatically on a State change. If you set resetLocked to true it allows you to populate the loader queue in one State, then swap to another State without having the queue erased, and start the load going from there. After the load has completed you could then disable the lock again as needed.

Thanks to @pnstickne for vast majority of this update.



We are now using our own custom build of Pixi v2. The Pixi project has moved all development resources over to Pixi v3, but it wasn't ready in time for the release of Phaser 2.3 so we've started applying our own fixes to the version of Pixi that Phaser uses.

As a result we have removed all files from the src/pixi folder that Phaser doesn't use, in order to make this distinction clearer. This includes EventTarget, so if you were relying on that in your game you'll need to add it back in to your local build.

We've also removed functions and properties from Pixi classes that Phaser doesn't require: such as the Interaction Manager, Stage.dirty, etc. This has helped us cut down the source code size and make the docs less confusing, as they no longer show properties for things that weren't even enabled.

We've rolled our own fixes into our version of Pixi, ensuring we keep it as bug-free as possible.

You can read the entire release notes here.

Programming News

12. March 2015


I’ve long been a fan of the Phaser HTML5 game library, as my ongoing tutorial series might indicate.  Somewhat recently Phaser started adding premium commercial plugins.  The most recently added plugin adds support for Box2D, the popular 2D physics based library.  This is a commercial plugin (aka, you’ve got to pay for it.  $65 for premium $45 for standard – only difference is number of samples ), but don’t fret, Phaser still has a number of physics systems built-in that are completely free.


Box2D is a feature-rich 2D physics system used by thousands of hit games.

This plugin opens-up the power of Box2D directly within Phaser. It has the same user-friendly approach to its API that the rest of Phaser does, making integration and game development a beeze.


It uses the excellent box2d-html5 JavaScript port by Isaac Burns. We found that this library had the best performance of those tested, even on mobile.

Development of the plugin was lead by Box2D experts iForce2D - the company responsible for the excellent Box2D visual editor R.U.B.E


See the Box2D Plugin Page for More Details


The Download includes

  • Getting Started Guide - You'll be coding in next to no time.
  • 90 Code Examples - From games to core mechanics.
  • API Documentation and Box2D User Manual
  • Free Upgrades
  • License free - Use it in commercial games
  • Ready built and minified source files + grunt scripts
  • Delivered via download from

Try it out

We've added 40 of the Box2D examples to this site.

Run them, play with them and edit the code to get a feel for how it all works.


The full release details are available here.


I actually like to see this form of monetization.  Developers need to eat and we want  them working to make better and better products.  Keeping the core free while adding premium but optional features as a premium plug-in seems like a good middle line to me.  The key is to keep developing the core free product at the same rate that commercial plugins are added.


15. January 2015


I’ve been doing a long running Phaser with TypeScript tutorial series that illustrates basically everything you need to know to create a complete game using the Phaser HTML5 game engine.  I decided to put together a video tutorial showing how to put it all together to make a complete game.


Now, keep in mind, the game is incredibly simple… I wanted to keep the entire thing to under an hour after all ( I failed, it’s an hour and a half ), so I had to keep the scope reasonable in size.  So as a result I’ve created Extreme Walking Simulator!  Yeah, you walk… and that’s it actually.  You walk forever and ever in front of the same looping background.  However, you are left with a complete but simple game but most importantly, a framework of code that can be expanded upon to build much more complex games.  It also illustrates program flow, drawing sprites, playing music, changing states, handling input and all the other things a “full” game has to do.


In addition to the code, all of the assets used are available on GitHub.  This includes my incredible title music, the Blend files used for the main character and the level scene.  Everything you need to create this game is there in the Assets folder.  Feel free to play around and use it however you want.  That said, the textures just came from Google Image Search, so no clue if there is a copyright on any of them, so don’t use them in a commercial project! I believe all of my Github stuff is set to Creative Commons license…  if it’s not, assume you can do anything you want with it and that you have absolutely no warranty.


Ok, enough preamble, let’s jump right in!  The tutorial is available in two parts on YouTube in 1080p ( or embedded below):



Following are the game itself, then the source listings, finally the two videos in an embedded player.




EDIT: Removed to prevent music auto playing, to play the game click here instead. Warning, loud


  • Click the title screen to get started
  • Tap right arrow to start walking/speed up
  • Tap left arrow to slow down/stop
  • Press ESC to stop the torture!



The Source Code



<!DOCTYPE html>

<html lang="en">
    <meta charset="utf-8" />
    <title>Hello Phaser</title>
    <link rel="stylesheet" href="app.css" type="text/css" />
    <script src="phaser.js"></script>
    <script src="GameObjects/MyScene.js"></script>
    <script src="GameObjects/Player.js"></script>
    <script src="States/TitleScreenState.js"></script>
    <script src="States/GamePlayState.js"></script>
    <script src="States/GameOverState.js"></script>
    <script src="app.js"></script>
    <div id="content"></div>



module Game {
    export class ExtremeWalkingSimulator {
        game: Phaser.Game;

        constructor() {
   = new Phaser.Game(1280, 720, Phaser.AUTO, 'content', {
                create: this.create, preload: this.preload

        preload() {
            // Graphics
  "title", "Graphics/TitleScreen.png");
  "scene", "Graphics/scene720p.png");
  "gameover", "Graphics/GameOver.png");

  "HERO_WALKING", "Graphics/Hero_Walking.png", "Graphics/Hero_Walking.xml");
  "HERO_IDLE", "Graphics/Hero_Idle.png", "Graphics/Hero_Idle.xml");

            // Audio
  "TitleSong", ["Sounds/TitleSong.mp3", "Sounds/TitleSong.ogg",
"Sounds/TitleSong.wav"]); } create() {"TitleScreenState", GameFromScratch.TitleScreenState, true);"GamePlayState", GameFromScratch.GamePlayState, false);"GameOverState", GameFromScratch.GameOverState, false); = Phaser.ScaleManager.SHOW_ALL; } } } window.onload = () => { var game = new Game.ExtremeWalkingSimulator(); };



module GameFromScratch {
    export enum PlayerState { IDLE, WALKING }

    export class Player extends Phaser.Sprite {
        game: Phaser.Game;
        playerState: PlayerState;
        RIGHT_ARROW: Phaser.Key;
        LEFT_ARROW: Phaser.Key;
        ESCAPE: Phaser.Key;
        walkingSpeed: number;

        public static MAX_SPEED: number = 30;

        constructor(game: Phaser.Game, x: number, y: number) {
   = game;

            this.walkingSpeed = 0;

            //Wire up input handlers
            this.RIGHT_ARROW =;
            this.RIGHT_ARROW.onDown.add(Player.prototype.MoveRight, this);

            this.LEFT_ARROW =;
            this.LEFT_ARROW.onDown.add(Player.prototype.MoveLessRight, this);

            this.ESCAPE =;
            this.ESCAPE.onDown.add(Player.prototype.GameOver, this);
            super(game, x, y, "HERO_WALKING", 0);

            this.anchor.set(0.0, 1.0);

        update() {
            if (this.playerState == PlayerState.WALKING) {
                this.x += (this.walkingSpeed / Player.MAX_SPEED) * (60 /;

                // This logic depends on scene being added first.
                var stageWidth =;
                if (this.x > stageWidth * .75)
                    this.x = stageWidth * .25;

        // Worse function name ever!
        MoveLessRight() {
            if (this.playerState != PlayerState.IDLE) {
                if (this.walkingSpeed > 0)
                    this.animations.currentAnim.speed = this.walkingSpeed;

        MoveRight() {
            if (this.playerState == PlayerState.IDLE) {
            else {
            if (this.walkingSpeed < Player.MAX_SPEED)
                this.animations.currentAnim.speed = this.walkingSpeed;

        StartWalking() {
            this.playerState = PlayerState.WALKING;
            this.walkingSpeed = 5;
            this.loadTexture("HERO_WALKING", 0);
  "walk", this.walkingSpeed, true);

        StartIdle() {
            this.loadTexture("HERO_IDLE", 0);
            this.playerState = PlayerState.IDLE;

        GameOver() {




module GameFromScratch {

    export class MyScene extends Phaser.Sprite {
        game: Phaser.Game;
        nextFrame: Phaser.Sprite;

        constructor(game: Phaser.Game, x: number, y: number) {
            super(game, x, y, "scene", 0);
            this.nextFrame = new Phaser.Sprite(, this.width, 0, "scene", 0);



module GameFromScratch {
    export class TitleScreenState extends Phaser.State {
        game: Phaser.Game;
        music: Phaser.Sound;

        constructor() {

        titleScreenImage: Phaser.Sprite;

        preload() {

        create() {
            this.titleScreenImage = this.add.sprite(0, 0, "title");
this.titleScreenImage.height); ="TitleSong"); = 100; = true;; this.input.onTap.addOnce(this.titleClicked, this); } titleClicked() {;"GamePlayState"); } } }



module GameFromScratch {
    export class GamePlayState extends Phaser.State {
        game: Phaser.Game;
        player: GameFromScratch.Player;
        myScene: GameFromScratch.MyScene;

        constructor() {

        preload() {
        create() {
            this.myScene = new MyScene(, 0, 0);
            this.player = new Player(, 0, - 50);


  ,0,this.myScene.width * 2, this.myScene.height);



module GameFromScratch {
    export class GameOverState extends Phaser.State {
        game: Phaser.Game;
        gameOverSprite: Phaser.Sprite;

        constructor() {

        preload() {
        create() {
            this.gameOverSprite = this.add.sprite(0, 0, "gameover", 0);
            this.gameOverSprite.scale.setTo( / this.gameOverSprite.width, /
this.gameOverSprite.height); this.input.onDown.add(() => {"TitleScreenState", true); }, this);; } } }




The Videos


Part One:


Part Two:


7. January 2015


It’s most a maintenance release, so the list of new features is fairly sparse:


New Features
  • Phaser.Loader now supports BLOB urls for audio files (thanks @aressler38 #1462)
  • Line.reflect will calculate the reflected, or outgoing angle of two lines. This can be used for Body vs. Line collision responses and rebounds.
  • Line.normalAngle gets the angle of the line normal in radians.
  • Line.normalX and Line.normalY contain the x and y components of the left-hand normal of the line.
  • Line.fromAngle will sets this line to start at the given x and y coordinates and for the segment to extend at angle for the given length.
  • BitmapData.drawGroup draws the immediate children of a Phaser.Group to a BitmapData. Children are only drawn if they have their exists property set to true. The children will be drawn at their x and y world space coordinates. When drawing it will take into account the child's rotation, scale and alpha values. No iteration takes place. Groups nested inside other Groups will not be iterated through.


You can read the complete release notes here.


The release 2.3 milestones are available here.


They also made this announcement regarding version 3:

We're hard at work on Phaser 3. Development on the brand new renderer began in earnest last year and we're already seeing exceptional results from it. You can follow our development in the forum and public repo. Even though we're working on taking Phaser 3 into ES6 and the next generation of web browsers, we haven't stopped with the 2.x branch.


If Phaser sounds interesting to you, of course, Gamefromscratch has an extensive tutorial series available here.

Programming News

4. December 2014


The Phaser HTML5 game development library has been churning out the releases as of late, and just yesterday 2.2.1 was released.  Perhaps most impressively, much of the releases content came from members within the community, always a good sign with open source projects. 


The biggest new feature is the Scale Manager, which you can read about here or from this newly released e-book.  The ScaleManager is to help enable your code to run on devices with multiple different resolutions.  The biggest change is Phaser moved to a proper fixed-step game loop, fully decoupling logic and rendering.


The full (and massive) change log below:


New Features
  • Updated to Pixi v2.2.0 - see separate change log entry below.
  • Cache.getRenderTexture will retrieve a RenderTexture that is stored in the Phaser Cache. This method replaces Cache.getTexture which is now deprecated.
  • Cache.autoResolveURL is a new boolean (default false) that automatically builds a cached map of all loaded assets vs. their absolute URLs, for use with Cache.getURL and Cache.checkURL. Note that in 2.1.3 and earlier this was enabled by default, but has since been moved behind this property which needs to be set to true before you load any assets to enable.
  • You can now call again on a Tween that has already completed. This will re-use the same tween, on the original object, without having to recreate the Tween again. This allows a single tween instance to be re-used multiple times, providing they are linked to the same object (thanks InsaneHero)
  • Phaser.Color.valueToColor converts a value: a "hex" string, a "CSS 'web' string", or a number - into red, green, blue, and alpha components (thanks @pnstickne #1264)
  • Stage.backgroundColor now supports CSS 'rgba' values, as well as hex strings and hex numbers (thanks @pnstickne #1234)
  • Pointer.addClickTrampoline now adds in support for click trampolines. These raise pointer events into click events, which are required internally for a few edge cases like IE11 full screen mode support, but are also useful if you know you specifically need a DOM click event from a pointer (thanks @pnstickne #1282)
  • Point.floor will Math.floor both the x and y values of the Point.
  • Point.ceil will Math.ceil both the x and y values of the Point.
  • ScaleManager.scaleSprite takes a Sprite or Image object and scales it to fit the given dimensions. Scaling happens proportionally without distortion to the sprites texture. The letterBox parameter controls if scaling will produce a letter-box effect or zoom the sprite until it fills the given values.
  • Phaser.DOM.getBounds is a cross-browser element.getBoundingClientRect method with optional cushion.
  • Phaser.DOM.calibrate is a private method that calibrates element coordinates for viewport checks.
  • Phaser.DOM.aspect gets the viewport aspect ratio (or the aspect ratio of an object or element)
  • Phaser.DOM.inViewport tests if the given DOM element is within the viewport, with an optional cushion parameter that allows you to specify a distance.
  • Phaser.DOM.viewportWidth returns the viewport width in pixels.
  • Phaser.DOM.viewportHeight returns the viewport height in pixels.
  • Phaser.DOM.documentWidth returns the document width in pixels.
  • Phaser.DOM.documentHeight returns the document height in pixels.
  • TilemapLayers have been given a decent performance boost on canvas with map shifting edge-redraw (thanks @pnstickne #1250)
  • A large refactor to how the internal game timers and physics calculations has been made. We've now swapped to using a fixed time step internally across Phaser, instead of the variable one we had before that caused glitchse on low-fps systems. Thanks to pjbaron for his help with all of these related changes.
  • We have separated the logic and render updates to permit slow motion and time slicing effects. We've fixed time calling to fix physics problems caused by variable time updates (i.e. collisions sometimes missing, objects tunneling, etc)
  • Once per frame calling for rendering and tweening to keep things as smooth as possible
  • Calculates a suggestedFps value (in multiples of 5 fps) based on a 2 second average of actual elapsed time values in the Time.update method. This is recalculated every 2 seconds so it could be used on a level-by-level basis if a game varies dramatically. I.e. if the fps rate consistently drops, you can adjust your game effects accordingly.
  • Game loop now tries to "catch up" frames if it is falling behind by iterating the logic update. This will help if the logic is occasionally causing things to run too slow, or if the renderer occasionally pushes the combined frame time over the FPS time. It's not a band-aid for a game that floods a low powered device however, so you still need to code accordingly. But it should help capture issues such as gc spikes or temporarily overloaded CPUs.
  • It now detects 'spiraling' which happens if a lot of frames are pushed out in succession meaning the CPU can never "catch up". It skips frames instead of trying to catch them up in this case. Note: the time value passed to the logic update functions is always constant regardless of these shenanigans.
  • Signals to the game program if there is a problem which might be fixed by lowering the desiredFps
  • Time.desiredFps is the new desired frame rate for your game.
  • Time.suggestedFps is the suggested frame rate for the game based on system load.
  • Time.slowMotion allows you to push the game into a slow motion mode. The default value is 1.0. 2.0 would be half speed, and so on.
  • Time.timeCap is no longer used and now deprecated. All timing is now handled by the fixed time-step code we've introduced.
  • can no longer be relied upon to contain a timestamp value. If the browser supports requestAnimationFrame then will contain the high resolution timer value that rAf generates. Otherwise it will contain the value of If you require the actual time value (in milliseconds) then please use Time.timeinstead. Note that all Phaser sub-systems that used to rely on have been updated, so if you have any code that extends these please be sure to check it.
  • Game.forceSingleUpdate will force just a single logic update, regardless of the delta timer values. You can use this in extremely heavy CPU situations where you know you're about to flood the CPU but don't want Phaser to get stuck in a spiral.
  • Tilemap.createFromTiles will convert all tiles matching the given tile index (or an array of indexes) into Sprites. You can optionally then replace these tiles if you wish. This is perfect for games when you want to turn specific tiles into Sprites for extra control. The Sprites have an optional properties object which they can be populated with.
  • Added support for the Wheel Event, which is the DOM3 spec (thanks @pnstickne #1318)
  • Wheel Scroll Event (old non-FF) and DOM Mouse Wheel (old FF) are supported via a non-exported reused wrapper object; WheelEventProxy. The proxy methods are generated one-time dynamically but only when needed.
  • Key.justDown allows you to test if a Key has just been pressed down or not. You can only call justDown once per key press. It will only return true once, until the Key is released and pressed down again. This allows you to use it in situations where you want to check if this key is down without using a Signal, such as in a core game loop (thanks @pjbaron #1321)
  • Key.justUp allows you to test if a Key has just been released or not. You can only call justUp once per key press. It will only return true once, until the Key is pressed down and released again. This allows you to use it in situations where you want to check if this key is up without using a Signal, such as in a core game loop (thanks @pjbaron #1321)
  • Device.whenReady is a new signal that you can use to tell when the device is initialized.
  • Device.onInitialized is dispatched after device initialization occurs but before any of the ready callbacks have been invoked. Local "patching" for a particular device can/should be done in this event.
  • TweenManager.removeFrom method allows you to remove a tween from a game object such as a Sprite (thanks @lewster32 #1279)
  • Tweens have been completely rewritten. They're now much more flexible and efficient than before:
  • When specifying the ease in or Tween.from you can now use a string instead of the Function. This makes your code less verbose. For example instead of Phaser.Easing.Sinusoidal.Out and you can now just use the string "Sine".The string names match those used by TweenMax and includes: "Linear", "Quad", "Cubic", "Quart", "Quint", "Sine", "Expo", "Circ", "Elastic", "Back", "Bounce", "Power0", "Power1", "Power2", "Power3" and "Power4". You can append ".easeIn", ".easeOut" and "easeInOut" variants. All are supported for each ease types.
  • Tweens now create a TweenData object. The Tween object itself acts like more of a timeline, managing multiple TweenData objects. You can now call and each call will create a new child tween that is added to the timeline, which are played through in sequence.
  • Tweens are now bound to the new Time.desiredFps value and update based on the new Game core loop, rather than being bound to time calculations. This means that tweens are now running with the same update logic as physics and the core loop.
  • Tween.timeScale allows you to scale the duration of a tween (and any child tweens it may have). A value of 1.0 means it should play at the desiredFps rate. A value of 0.5 will run at half the frame rate, 2 at double and so on. You can even tween the timeScale value for interesting effects!
  • Tween.reverse allows you to instantly reverse an active tween. If the Tween has children then it will smoothly reverse through all child tweens as well.
  • Tween.repeatAll allows you to control how many times all child tweens will repeat before firing the Tween.onComplete event. You can set the value to -1 to repeat forever.
  • Tween.loop now controls the looping of all child tweens.
  • Tween.onRepeat is a new signal that is dispatched whenever a Tween repeats. If a Tween has many child tweens its dispatched once the sequence has repeated.
  • Tween.onChildComplete is a new signal that is dispatched whenever any child tweens have completed. If a Tween consists of 4 sections you will get 3 onChildComplete events followed by 1 onComplete event as the final tween finishes.
  • Chained tweens are now more intelligently handled. Because you can easily create child tweens (by simply calling multiple times) chained tweens are now used to kick-off longer sequences. You can pass as many Tween objects to Tween.chain as you like as they'll all be played in sequence. As one Tween completes it passes on to the next until the entire chain is finished.
  • Tween.stop has a new complete parameter that if set will still fire the onComplete event and start the next chained tween, if there is one.
  • Tween.delay, Tween.repeat, Tween.yoyo, Tween.easing and Tween.interpolation all have a new index parameter. This allows you to target specific child tweens, or if set to -1 it will update all children at once.
  • Tween.totalDuration reports the total duration of all child tweens in ms.
  • There are new easing aliases:
  • * Phaser.Easing.Power0 = Phaser.Easing.Linear.None
  • * Phaser.Easing.Power1 = Phaser.Easing.Quadratic.Out
  • * Phaser.Easing.Power2 = Phaser.Easing.Cubic.Out
  • * Phaser.Easing.Power3 = Phaser.Easing.Quartic.Out
  • * Phaser.Easing.Power4 = Phaser.Easing.Quintic.Out
  • ScaleManager.windowContraints now allows specifying 'visual' or 'layout' as the constraint. Using the 'layout' constraint should prevent a mobile device from trying to resize the game when zooming.

    Including the the new changes the defaults have been changed to

    windowContraints = { right: 'layout', bottom: '' }

    This changes the current scaling behavior as seen in "Game Scaling" (as it will only scale for the right edge) but also prevents such scaling from going bonkers in some mobile environments like the newer Android browser. (Automatic scroll-to-top, albeit configurable, enabled for non-desktop by default is not a fun situation here.)

    To obtain the current semantics on a desktop the bottom should be changed to 'layout'; although this will result in different behavior depending on mobile device. To make the sizing also follow mobile zooming they should be changed to 'visual'.

    Also added temp Rectangle re-used for various internal calculations.

  • Phaser.DOM now also special-cases desktops to align the layout bounds correctly (this may disagree with CSS breakpoints but it aligns the with actual CSS width), without applying a window height/width expansion as required on mobile browsers.

  • Signals have been heavily restructured to cut down on the number that are generated in-game. New signal proxies manage the setting and creation as required, cutting down on the volume of run-time object creation significantly. No user code needs to change, however if you did override Phaser.Signal or Sprite.Events then please be aware of the changes by inspecting the source (and commit #1389 by @pnstickne).
  • Game.lockRender is a new property. If false Phaser will automatically render the display list every update. If truethe render loop will be skipped. You can toggle this value at run-time to gain exact control over when Phaser renders. This can be useful in certain types of game or application. Please note that if you don't render the display list then none of the game object transforms will be updated, so use this value carefully.
  • TypeScript definitions fixes and updates (thanks @clark-stevenson @draconisNoctis)
  • The TypeScript definitions have moved to the typescript folder in the root of the repository.
  • Cache._resolveUrl has been renamed to Cache._resolveURL internally and gained a new parameter. This method is a private internal one.
  • Cache.getUrl is deprecated. The same method is now available as Cache.getURL.
  • Loader.useXDomainRequest used to be enabled automatically for IE9 but is now always set to false. Please enable it only if you know your server set-up / CDN requires it, as some most certainly do, but we're finding them to be less and less used these days, so we feel it's safe to now disable this by default (#1248)
  • Game.destroy now destroys either the WebGLRenderer or CanvasRenderer, whichever Pixi was using.
  • Particle.Emitter will now automatically set particle.body.skipQuadTree to true to help with collision speeds within Arcade Physics.
  • Particle.Emitter.explode (or Emitter.start with the explode parameter set to true) will immediately emit the required quantity of particles and not delay until the next frame to do so. This means you can re-use a single emitter across multiple places in your game that require explode-style emissions, just by adjusting the emitter.x andemitter.y properties before calling explode (thanks Insanehero)
  • Phaser.Polygon has been refactored to address some Pixi v2 migration issues (thanks @pnstickne for the original implementation #1267)
  • Polygon.area is now only calculated when the Polygon points list is modified, rather than on every call.
  • Phaser.Polygon can now accept the points list in a variety of formats: Arrays of Points, numbers, objects with public x/y properties or any combination of, or as a parameter list (thanks @pnstickne for the original implementation #1267)
  • All of the Input classes now use the more consistent enabled property instead of disabled. I.e. you can now checkif (input.mouse.enabled) rather than if (!input.mouse.disabled). The disabled property has been moved to a getter for backwards compatibility but is deprecated and will be removed in a future version (thanks @pnstickne #1257)
  • The Input class has been given a minor refactor to tidy things up. Specifically:
    • pointerN are aliases to backed pointers[N-1] array. This simplifies (and increases the efficiency of) looping through all the pointers when applicable; also eliminates pointer-existence checks Removes various hard-coded limits (added MAX_POINTERS); changed maxPointers default
    • Removed some special-casing from cases where it did not matter
    • Removed === false/true, == usage for consistency, changed missing value check to typeof, etc.
    • Updated documentation for specificity; added @public\@protected
    • @deprecated currentPointers due to odd set pattern; totalCurrentPointers is more appropriate. (thanks @pnstickne #1283)
  • Various ScaleManager fixes and updates (thanks @pnstickne):
    • Scale modes can now be set independently
    • Switching between fullscreen and normal correctly restores modes
    • Alignment does not incorrectly offset in fullscreen mode (#1255)
    • Changing scale/alignment promptly refreshes layout
    • isFullScreen returns a boolean, as it should
    • Faster parent checks (if required)
    • NO_SCALE should not not scale (vs previous behavior of having no behavior)
    • Correct usage of scaleMode depending on mode
    • Fullscreen Mode always scaling to fill screen in Firefox (#1256)
  • AudioSprite - removed an unnecessary if-statement (thanks @DaanHaaz #1312)
  • ArcadePhysics.skipQuadTree is now set to true by default. A QuadTree is a wonderful thing if the objects in your game are well spaced out. But in tightly packed games, especially those with tilemaps or single-screen games, they are a considerable performance drain and eat up CPU. We've taken the decision to disable the Arcade Physics QuadTree by default. It's all still in there and can be re-enabled via game.physics.arcade.skipQuadTree = false, but please only do so if you're sure your game benefits from this.
  • Phaser.DOM now houses new DOM functions. Some have been moved over from ScaleManager as appropriate.
  • Key.justPressed has bee renamed to Key.downDuration which is a much clearer name for what the method actually does. See Key.justDown for a nice clean alternative.
  • Key.justReleased has bee renamed to Key.upDuration which is a much clearer name for what the method actually does. See Key.justUp for a nice clean alternative.
  • Keyboard.justPressed has bee renamed to Keyboard.downDuration which is a much clearer name for what the method actually does.
  • Keyboard.justReleased has bee renamed to Keyboard.upDuration which is a much clearer name for what the method actually does.
  • Keyboard.downDuration, Keyboard.upDuration and Keyboard.isDown now all return null if the Key wasn't found in the local keys array.
  • The Phaser.Device class has been made into a singleton and removed it's dependency on Phaser.Game (thanks @pnstickne #1328)
  • ArrayList has been renamed to ArraySet (as it's actually a data set implementation) and moved from the corefolder to the utils folder (thanks @pnstickne)
  • If you are reloading a Phaser Game on a page that never properly refreshes (such as in an AngularJS project) then you will quickly run out of AudioContext nodes. If this is the case create a global var called PhaserGlobal on the window object before creating the game. The active AudioContext will then be saved towindow.PhaserGlobal.audioContext when the Phaser game is destroyed, and re-used when it starts again (#1233)
  • Camera.screenView is now deprecated. All Camera culling checks are made against Camera.view now instead.
  • Various CocoonJS related hacks removed thanks to fixes from Ludei directly in CocoonJS! Woohoo :)
  • Phaser.HEADLESS check removed from the core game loop. If you need to disable rendering you can now override the Phaser.Game.updateRender method instead with your own.
  • Group.forEach fixed against browser de-optimization (thanks @pnstickne #1357)
  • Phaser.Signals have been taken on a diet. They have been updated such that there is significantly less penalty for having many unused signals. The changes include:
  • * Changing it so there is no dispatch closure created. This is a potentially breaking change for third party code.
  • * In the rare case that code needs to obtain a dispatch-closure, the boundDispatch property can be used to trivially obtain a cached closure.
  • * The properties and default values are moved into the prototype; and the _bindings array creation is deferred. This change, coupled with the removal of the automatic closure, results in a very lightweight ~24bytes/object (in Chrome) for unbound signals.
  • With this change in place Signals now consume less than 50KB / 50KB (shallow / retained memory) for 200 sprites, where-as before they used 300KB / 600KB (thanks @pnstickne #1359)
  • Time.elapsedMS holds the number of milliseconds since the last Game loop, regardless of raF or setTimout being used.
  • Incorrectly prepared tilemap images (with dimensions not evenly divisible by the tile dimensions) would render incorrectly when compared to the display seen in Tiled. The Phaser tilemap code has been adjusted to match the way Tiled deals with this, which should help if you're using tileset images that contain extra padding/margin pixels. Additional console warnings have been added. However the fact remains that you should carefully prepare your tilesets before using them. Crop off extra padding, make sure they are the right dimensions (thanks @SoulBeaver for the report and @pnstickne for the fix #1371)
  • Text.setShadow has had the default color value changed from rgba(0,0,0,0) to rgba(0,0,0,1) so it appears as a black shadow by default - before the alpha channel made it invisible.
  • Math.getRandom will now return null if random selection is missing, or array has no entries (thanks @pnstickne #1395)
  • Array.transposeArray has had a small off-by-one error fixed. It didn't effect the results but meant returned arrays were 1 element bigger than needed (thanks @nextht #1394)
  • State.preRender is now sent two parameters: a reference to the Phaser.Game instance and a new parameter:elapsedTime which is the time elapsed since the last update.
Bug Fixes
  • Tilemaps in WebGL wouldn't update after the first frame due to a subtle change in how Pixi uploads new textures to the GPU.
  • XML files weren't being added to the URL map.
  • Cache._resolveURL was causing a Sound double-load in Firefox and causing errors (thanks @domonyiv #1253)
  • Loader.json was using the wrong context in IE9 with XDomainRequest calls (thanks @pnstickne #1258)
  • Text.updateText was incorrectly increasing the size of the texture each time it was called (thanks @spayton #1261)
  • Polygon.contains now correctly calculates the result (thanks @pnstickne @BurnedToast #1267)
  • Setting Key.enabled = false while it is down did not reset the isDown state (thanks @pnstickne #1190 #1271)
  • The Gamepad.addCallbacks context parameter was never actually remembered, causing the callbacks to run in the wrong context (thanks @englercj #1285)
  • Animation.setFrame used the wrong frames array if useLocalFrameIndex was false and a numeric frame ID was given (thanks @Skeptron #1284)
  • Fullscreen mode in IE11 now works (thanks @pnstickne)
  • Cache.addBitmapData now auto-creates a FrameData (thanks @pnstickne #1294 #1300)
  • P2.BodyDebug circles were drawing at half widths (thanks @enriqueto #1288)
  • FrameData.clone fixed when cloning data using frame names rather than indexes (thanks pjbaron)
  • Lots of the Cache getters (such as Cache.getbitmapData) would return undefined if the asset couldn't be found. They now all consistently return null for missing entries (thanks @Matoking #1305)
  • Phaser games should now work again from the CocoonJS Launcher.
  • Only one of the mouse wheel events is listened to, newest standard first. This fixes a bug in FF where it would use the default DOMMouseWheel (thanks @pnstickne #1313)
  • Stage.smoothed needed to modify the value of PIXI.scaleMode.DEFAULT instead of PIXI.scaleMode.LINEAR (thanks @pixelpicosean #1322)
  • Newly created Groups always had zero z index (thanks @spayton #1291)
  • Sprite.autoCull now properly works if the camera moves around the world.
  • Sprite.inCamera uses a much faster check if auto culling or world bounds checks are enabled and properly adjusts for camera position.
  • Camera.totalInView is a new property that contains the total number of Sprites rendered that have autoCull set to true and are within the Cameras view.
  • Emitter.setScale fixed minX minY order precedence (thanks spayton)
  • Group.iterate can now accept undefined/null as the arguments (thanks @pnstickne #1353 @tasos-ch #1352)
  • When you change State the P2 Physics world is no longer fully cleared. All of the bodies, springs, fixtures, materials and constraints are removed - but config settings such as gravity, restitution, the contact solver, etc are all retained. The P2.World object is only created the very first time you call Physics.startSystem. Every subsequent call hits P2.World.reset instead. This fixes "P2.World gravity broken after switching states" (and other related issues) (#1292 #1289 #1176)
  • Text.lineSpacing works correctly again. Before no space was added between the lines (thanks @intimidate #1367 and @brejep #1366)
  • P2.BodyDebug always lagged behind the position of the Body it was tracking by one frame, which became visible at high speeds. It now syncs its position in the Body.postUpdate which prevents this from happening (thanks @valueerror)
  • A State.preRender callback wasn't removed correctly when switching States.


Phaser is available here.


Of course, GameFromScratch has a comprehensive Phaser with TypeScript series available here.


GFS On YouTube

See More Tutorials on!

Month List