Phaser.ArraySet = function (list){ 
this.position = 0; 
this.list = list || [] ; 
} 
; 
Phaser.ArraySet.prototype = { 
add: function (item){ 
if (!this.exists(item)) { 
this.list.push(item); 
} 
return item; 
} 
,
getIndex: function (item){ 
return this.list.indexOf(item); 
} 
,
getByKey: function (property, value){ 
var i = _AN_Read_length('length', this.list); 
while (i-- ){ 
if (this.list[i][property] === value) { 
return this.list[i]; 
} 
} 
return null ; 
} 
,
exists: function (item){ 
return (this.list.indexOf(item) > -1); 
} 
,
reset: function (){ 
this.list.length = 0; 
} 
,
remove: function (item){ 
var idx = this.list.indexOf(item); 
if (idx > -1) { 
this.list.splice(idx, 1); 
return item; 
} 
} 
,
setAll: function (key, value){ 
var i = _AN_Read_length('length', this.list); 
while (i-- ){ 
if (this.list[i]) { 
this.list[i][key] = value; 
} 
} 
} 
,
callAll: function (key){ 
var args = Array.prototype.splice.call(arguments, 1); 
var i = _AN_Read_length('length', this.list); 
while (i-- ){ 
if (this.list[i] && this.list[i][key]) { 
this.list[i][key].apply(this.list[i], args); 
} 
} 
} 
,
removeAll: function (destroy){ 
if (typeof destroy === 'undefined') { 
destroy = false ; 
} 
var i = _AN_Read_length('length', this.list); 
while (i-- ){ 
if (this.list[i]) { 
var item = this.remove(this.list[i]); 
if (destroy) { 
item.destroy(); 
} 
} 
} 
this.position = 0; 
this.list = [] ; 
} 
}
; 
Object.defineProperty(Phaser.ArraySet.prototype, "total", { 
get: function (){ 
return _AN_Read_length("length", this.list); 
} 
}
); 
Object.defineProperty(Phaser.ArraySet.prototype, "first", { 
get: function (){ 
this.position = 0; 
if (_AN_Read_length("length", this.list) > 0) { 
return this.list[0]; 
} 
 else { 
return null ; 
} 
} 
}
); 
Object.defineProperty(Phaser.ArraySet.prototype, "next", { 
get: function (){ 
if (this.position < _AN_Read_length("length", this.list)) { 
this.position++ ; 
return this.list[this.position]; 
} 
 else { 
return null ; 
} 
} 
}
); 
Phaser.ArraySet.prototype.constructor = Phaser.ArraySet; 
Phaser.ArrayList = Phaser.ArraySet;