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< h1 class = "page-title" > Source: animation/Animation.js< / h1 >
< section >
< article >
< pre class = "sunlight-highlight-javascript linenums" > /**
* @author Richard Davey < rich@photonstorm.com>
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* @copyright 2014 Photon Storm Ltd.
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* @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
*/
/**
* An Animation instance contains a single animation and the controls to play it.
* It is created by the AnimationManager, consists of Animation.Frame objects and belongs to a single Game Object such as a Sprite.
*
* @class Phaser.Animation
* @constructor
* @param {Phaser.Game} game - A reference to the currently running game.
* @param {Phaser.Sprite} parent - A reference to the owner of this Animation.
* @param {string} name - The unique name for this animation, used in playback commands.
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* @param {Phaser.FrameData} frameData - The FrameData object that contains all frames used by this Animation.
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* @param {(Array.< number>|Array.< string>)} frames - An array of numbers or strings indicating which frames to play in which order.
* @param {number} delay - The time between each frame of the animation, given in ms.
* @param {boolean} looped - Should this animation loop or play through once.
*/
Phaser.Animation = function (game, parent, name, frameData, frames, delay, looped) {
/**
* @property {Phaser.Game} game - A reference to the currently running Game.
*/
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this.game = game;
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/**
* @property {Phaser.Sprite} _parent - A reference to the parent Sprite that owns this Animation.
* @private
*/
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this._parent = parent;
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/**
* @property {Phaser.FrameData} _frameData - The FrameData the Animation uses.
* @private
*/
this._frameData = frameData;
/**
* @property {string} name - The user defined name given to this Animation.
*/
this.name = name;
/**
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* @property {array} _frames
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* @private
*/
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this._frames = [];
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this._frames = this._frames.concat(frames);
/**
* @property {number} delay - The delay in ms between each frame of the Animation.
*/
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this.delay = 1000 / delay;
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/**
* @property {boolean} looped - The loop state of the Animation.
*/
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this.looped = looped;
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/**
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* @property {boolean} killOnComplete - Should the parent of this Animation be killed when the animation completes?
* @default
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*/
this.killOnComplete = false;
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/**
* @property {boolean} isFinished - The finished state of the Animation. Set to true once playback completes, false during playback.
* @default
*/
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this.isFinished = false;
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/**
* @property {boolean} isPlaying - The playing state of the Animation. Set to false once playback completes, true during playback.
* @default
*/
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this.isPlaying = false;
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/**
* @property {boolean} isPaused - The paused state of the Animation.
* @default
*/
this.isPaused = false;
/**
* @property {boolean} _pauseStartTime - The time the animation paused.
* @private
* @default
*/
this._pauseStartTime = 0;
/**
* @property {number} _frameIndex
* @private
* @default
*/
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this._frameIndex = 0;
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/**
* @property {number} _frameDiff
* @private
* @default
*/
this._frameDiff = 0;
/**
* @property {number} _frameSkip
* @private
* @default
*/
this._frameSkip = 1;
/**
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* @property {Phaser.Frame} currentFrame - The currently displayed frame of the Animation.
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*/
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this.currentFrame = this._frameData.getFrame(this._frames[this._frameIndex]);
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};
Phaser.Animation.prototype = {
/**
* Plays this animation.
*
* @method Phaser.Animation#play
* @memberof Phaser.Animation
* @param {number} [frameRate=null] - The framerate to play the animation at. The speed is given in frames per second. If not provided the previously set frameRate of the Animation is used.
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* @param {boolean} [loop=false] - Should the animation be looped after playback. If not provided the previously set loop value of the Animation is used.
* @param {boolean} [killOnComplete=false] - If set to true when the animation completes (only happens if loop=false) the parent Sprite will be killed.
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* @return {Phaser.Animation} - A reference to this Animation instance.
*/
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play: function (frameRate, loop, killOnComplete) {
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if (typeof frameRate === 'number')
{
// If they set a new frame rate then use it, otherwise use the one set on creation
this.delay = 1000 / frameRate;
}
if (typeof loop === 'boolean')
{
// If they set a new loop value then use it, otherwise use the one set on creation
this.looped = loop;
}
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if (typeof killOnComplete !== 'undefined')
{
// Remove the parent sprite once the animation has finished?
this.killOnComplete = killOnComplete;
}
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this.isPlaying = true;
this.isFinished = false;
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this.paused = false;
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this._timeLastFrame = this.game.time.now;
this._timeNextFrame = this.game.time.now + this.delay;
this._frameIndex = 0;
this.currentFrame = this._frameData.getFrame(this._frames[this._frameIndex]);
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this._parent.setTexture(PIXI.TextureCache[this.currentFrame.uuid]);
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if (this._parent.events)
{
this._parent.events.onAnimationStart.dispatch(this._parent, this);
}
return this;
},
/**
* Sets this animation back to the first frame and restarts the animation.
*
* @method Phaser.Animation#restart
* @memberof Phaser.Animation
*/
restart: function () {
this.isPlaying = true;
this.isFinished = false;
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this.paused = false;
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this._timeLastFrame = this.game.time.now;
this._timeNextFrame = this.game.time.now + this.delay;
this._frameIndex = 0;
this.currentFrame = this._frameData.getFrame(this._frames[this._frameIndex]);
},
/**
* Stops playback of this animation and set it to a finished state. If a resetFrame is provided it will stop playback and set frame to the first in the animation.
*
* @method Phaser.Animation#stop
* @memberof Phaser.Animation
* @param {boolean} [resetFrame=false] - If true after the animation stops the currentFrame value will be set to the first frame in this animation.
*/
stop: function (resetFrame) {
if (typeof resetFrame === 'undefined') { resetFrame = false; }
this.isPlaying = false;
this.isFinished = true;
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this.paused = false;
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if (resetFrame)
{
this.currentFrame = this._frameData.getFrame(this._frames[0]);
}
},
/**
* Updates this animation. Called automatically by the AnimationManager.
*
* @method Phaser.Animation#update
* @memberof Phaser.Animation
*/
update: function () {
if (this.isPaused)
{
return false;
}
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if (this.isPlaying === true & & this.game.time.now >= this._timeNextFrame)
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{
this._frameSkip = 1;
// Lagging?
this._frameDiff = this.game.time.now - this._timeNextFrame;
this._timeLastFrame = this.game.time.now;
if (this._frameDiff > this.delay)
{
// We need to skip a frame, work out how many
this._frameSkip = Math.floor(this._frameDiff / this.delay);
this._frameDiff -= (this._frameSkip * this.delay);
}
// And what's left now?
this._timeNextFrame = this.game.time.now + (this.delay - this._frameDiff);
this._frameIndex += this._frameSkip;
if (this._frameIndex >= this._frames.length)
{
if (this.looped)
{
this._frameIndex %= this._frames.length;
this.currentFrame = this._frameData.getFrame(this._frames[this._frameIndex]);
if (this.currentFrame)
{
this._parent.setTexture(PIXI.TextureCache[this.currentFrame.uuid]);
}
this._parent.events.onAnimationLoop.dispatch(this._parent, this);
}
else
{
this.onComplete();
}
}
else
{
this.currentFrame = this._frameData.getFrame(this._frames[this._frameIndex]);
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if (this.currentFrame)
{
this._parent.setTexture(PIXI.TextureCache[this.currentFrame.uuid]);
}
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}
return true;
}
return false;
},
/**
* Cleans up this animation ready for deletion. Nulls all values and references.
*
* @method Phaser.Animation#destroy
* @memberof Phaser.Animation
*/
destroy: function () {
this.game = null;
this._parent = null;
this._frames = null;
this._frameData = null;
this.currentFrame = null;
this.isPlaying = false;
},
/**
* Called internally when the animation finishes playback. Sets the isPlaying and isFinished states and dispatches the onAnimationComplete event if it exists on the parent.
*
* @method Phaser.Animation#onComplete
* @memberof Phaser.Animation
*/
onComplete: function () {
this.isPlaying = false;
this.isFinished = true;
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this.paused = false;
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if (this._parent.events)
{
this._parent.events.onAnimationComplete.dispatch(this._parent, this);
}
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if (this.killOnComplete)
{
this._parent.kill();
}
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}
};
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Phaser.Animation.prototype.constructor = Phaser.Animation;
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/**
* @name Phaser.Animation#paused
* @property {boolean} paused - Gets and sets the paused state of this Animation.
*/
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Object.defineProperty(Phaser.Animation.prototype, 'paused', {
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get: function () {
return this.isPaused;
},
set: function (value) {
this.isPaused = value;
if (value)
{
// Paused
this._pauseStartTime = this.game.time.now;
}
else
{
// Un-paused
if (this.isPlaying)
{
this._timeNextFrame = this.game.time.now + this.delay;
}
}
}
});
/**
* @name Phaser.Animation#frameTotal
* @property {number} frameTotal - The total number of frames in the currently loaded FrameData, or -1 if no FrameData is loaded.
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* @readonly
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*/
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Object.defineProperty(Phaser.Animation.prototype, 'frameTotal', {
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get: function () {
return this._frames.length;
}
});
/**
* @name Phaser.Animation#frame
* @property {number} frame - Gets or sets the current frame index and updates the Texture Cache for display.
*/
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Object.defineProperty(Phaser.Animation.prototype, 'frame', {
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get: function () {
if (this.currentFrame !== null)
{
return this.currentFrame.index;
}
else
{
return this._frameIndex;
}
},
set: function (value) {
this.currentFrame = this._frameData.getFrame(value);
if (this.currentFrame !== null)
{
this._frameIndex = value;
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this._parent.setTexture(PIXI.TextureCache[this.currentFrame.uuid]);
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}
}
});
/**
* Really handy function for when you are creating arrays of animation data but it's using frame names and not numbers.
* For example imagine you've got 30 frames named: 'explosion_0001-large' to 'explosion_0030-large'
* You could use this function to generate those by doing: Phaser.Animation.generateFrameNames('explosion_', 1, 30, '-large', 4);
*
* @method Phaser.Animation.generateFrameNames
* @param {string} prefix - The start of the filename. If the filename was 'explosion_0001-large' the prefix would be 'explosion_'.
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* @param {number} start - The number to start sequentially counting from. If your frames are named 'explosion_0001' to 'explosion_0034' the start is 1.
* @param {number} stop - The number to count to. If your frames are named 'explosion_0001' to 'explosion_0034' the stop value is 34.
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* @param {string} [suffix=''] - The end of the filename. If the filename was 'explosion_0001-large' the prefix would be '-large'.
* @param {number} [zeroPad=0] - The number of zeroes to pad the min and max values with. If your frames are named 'explosion_0001' to 'explosion_0034' then the zeroPad is 4.
*/
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Phaser.Animation.generateFrameNames = function (prefix, start, stop, suffix, zeroPad) {
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if (typeof suffix == 'undefined') { suffix = ''; }
var output = [];
var frame = '';
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if (start < stop)
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{
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for (var i = start; i < = stop; i++)
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{
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if (typeof zeroPad == 'number')
{
// str, len, pad, dir
frame = Phaser.Utils.pad(i.toString(), zeroPad, '0', 1);
}
else
{
frame = i.toString();
}
frame = prefix + frame + suffix;
output.push(frame);
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}
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}
else
{
for (var i = start; i >= stop; i--)
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{
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if (typeof zeroPad == 'number')
{
// str, len, pad, dir
frame = Phaser.Utils.pad(i.toString(), zeroPad, '0', 1);
}
else
{
frame = i.toString();
}
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frame = prefix + frame + suffix;
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output.push(frame);
}
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}
return output;
}
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