Phaser.Button = function (game, x, y, key, callback, callbackContext, overFrame, outFrame, downFrame, upFrame){ 
x = x || 0; 
y = y || 0; 
key = key || null ; 
callback = callback || null ; 
callbackContext = callbackContext || this; 
Phaser.Image.call(this, game, x, y, key, outFrame); 
this.type = Phaser.BUTTON; 
this.physicsType = Phaser.SPRITE; 
this._onOverFrame = null ; 
this._onOutFrame = null ; 
this._onDownFrame = null ; 
this._onUpFrame = null ; 
this.onOverSound = null ; 
this.onOutSound = null ; 
this.onDownSound = null ; 
this.onUpSound = null ; 
this.onOverSoundMarker = ''; 
this.onOutSoundMarker = ''; 
this.onDownSoundMarker = ''; 
this.onUpSoundMarker = ''; 
this.onInputOver = new Phaser.Signal(); 
this.onInputOut = new Phaser.Signal(); 
this.onInputDown = new Phaser.Signal(); 
this.onInputUp = new Phaser.Signal(); 
this.onOverMouseOnly = true ; 
this.justReleasedPreventsOver = Phaser.PointerMode.TOUCH; 
this.freezeFrames = false ; 
this.forceOut = false ; 
this.inputEnabled = true ; 
this.input.start(0, true ); 
this.input.useHandCursor = true ; 
this.setFrames(overFrame, outFrame, downFrame, upFrame); 
if (callback !== null ) { 
this.onInputUp.add(callback, callbackContext); 
} 
this.events.onInputOver.add(this.onInputOverHandler, this); 
this.events.onInputOut.add(this.onInputOutHandler, this); 
this.events.onInputDown.add(this.onInputDownHandler, this); 
this.events.onInputUp.add(this.onInputUpHandler, this); 
this.events.onRemovedFromWorld.add(this.removedFromWorld, this); 
} 
; 
Phaser.Button.prototype = Object.create(Phaser.Image.prototype); 
Phaser.Button.prototype.constructor = Phaser.Button; 
var STATE_OVER = 'Over'; 
var STATE_OUT = 'Out'; 
var STATE_DOWN = 'Down'; 
var STATE_UP = 'Up'; 
Phaser.Button.prototype.clearFrames = function (){ 
this.setFrames(null , null , null , null ); 
} 
; 
Phaser.Button.prototype.removedFromWorld = function (){ 
this.inputEnabled = false ; 
} 
; 
Phaser.Button.prototype.setStateFrame = function (state, frame, switchImmediately){ 
var frameKey = '_on' + state + 'Frame'; 
if (frame !== null ) { 
this[frameKey] = frame; 
if (switchImmediately) { 
this.changeStateFrame(state); 
} 
} 
 else { 
this[frameKey] = null ; 
} 
} 
; 
Phaser.Button.prototype.changeStateFrame = function (state){ 
if (this.freezeFrames) { 
return false ; 
} 
var frameKey = '_on' + state + 'Frame'; 
var frame = this[frameKey]; 
if (typeof frame === 'string') { 
this.frameName = frame; 
return true ; 
} 
 else if (typeof frame === 'number') { 
this.frame = frame; 
return true ; 
} 
 else { 
return false ; 
} 
} 
; 
Phaser.Button.prototype.setFrames = function (overFrame, outFrame, downFrame, upFrame){ 
this.setStateFrame(STATE_OVER, overFrame, this.input.pointerOver()); 
this.setStateFrame(STATE_OUT, outFrame, !this.input.pointerOver()); 
this.setStateFrame(STATE_DOWN, downFrame, this.input.pointerDown()); 
this.setStateFrame(STATE_UP, upFrame, this.input.pointerUp()); 
} 
; 
Phaser.Button.prototype.setStateSound = function (state, sound, marker){ 
var soundKey = 'on' + state + 'Sound'; 
var markerKey = 'on' + state + 'SoundMarker'; 
if (sound instanceof Phaser.Sound || sound instanceof Phaser.AudioSprite) { 
this[soundKey] = sound; 
this[markerKey] = typeof marker === 'string'? marker: ''; 
} 
 else { 
this[soundKey] = null ; 
this[markerKey] = ''; 
} 
} 
; 
Phaser.Button.prototype.playStateSound = function (state){ 
var soundKey = 'on' + state + 'Sound'; 
var sound = this[soundKey]; 
if (sound) { 
var markerKey = 'on' + state + 'SoundMarker'; 
var marker = this[markerKey]; 
sound.play(marker); 
return true ; 
} 
 else { 
return false ; 
} 
} 
; 
Phaser.Button.prototype.setSounds = function (overSound, overMarker, downSound, downMarker, outSound, outMarker, upSound, upMarker){ 
this.setStateSound(STATE_OVER, overSound, overMarker); 
this.setStateSound(STATE_OUT, outSound, outMarker); 
this.setStateSound(STATE_DOWN, downSound, downMarker); 
this.setStateSound(STATE_UP, upSound, upMarker); 
} 
; 
Phaser.Button.prototype.setOverSound = function (sound, marker){ 
this.setStateSound(STATE_OVER, sound, marker); 
} 
; 
Phaser.Button.prototype.setOutSound = function (sound, marker){ 
this.setStateSound(STATE_OUT, sound, marker); 
} 
; 
Phaser.Button.prototype.setDownSound = function (sound, marker){ 
this.setStateSound(STATE_DOWN, sound, marker); 
} 
; 
Phaser.Button.prototype.setUpSound = function (sound, marker){ 
this.setStateSound(STATE_UP, sound, marker); 
} 
; 
Phaser.Button.prototype.onInputOverHandler = function (sprite, pointer){ 
if (pointer.justReleased() && (this.justReleasedPreventsOver & pointer.pointerMode) === pointer.pointerMode) { 
return ; 
} 
this.changeStateFrame(STATE_OVER); 
if (this.onOverMouseOnly && !pointer.isMouse) { 
return ; 
} 
this.playStateSound(STATE_OVER); 
if (this.onInputOver) { 
this.onInputOver.dispatch(this, pointer); 
} 
} 
; 
Phaser.Button.prototype.onInputOutHandler = function (sprite, pointer){ 
this.changeStateFrame(STATE_OUT); 
this.playStateSound(STATE_OUT); 
if (this.onInputOut) { 
this.onInputOut.dispatch(this, pointer); 
} 
} 
; 
Phaser.Button.prototype.onInputDownHandler = function (sprite, pointer){ 
this.changeStateFrame(STATE_DOWN); 
this.playStateSound(STATE_DOWN); 
if (this.onInputDown) { 
this.onInputDown.dispatch(this, pointer); 
} 
} 
; 
Phaser.Button.prototype.onInputUpHandler = function (sprite, pointer, isOver){ 
this.playStateSound(STATE_UP); 
if (this.onInputUp) { 
this.onInputUp.dispatch(this, pointer, isOver); 
} 
if (this.freezeFrames) { 
return ; 
} 
if (this.forceOut === true  || (this.forceOut & pointer.pointerMode) === pointer.pointerMode) { 
this.changeStateFrame(STATE_OUT); 
} 
 else { 
var changedUp = this.changeStateFrame(STATE_UP); 
if (!changedUp) { 
if (isOver) { 
this.changeStateFrame(STATE_OVER); 
} 
 else { 
this.changeStateFrame(STATE_OUT); 
} 
} 
} 
} 
;