Phaser.PluginManager = function (game, parent){ 
this.game = game; 
this._parent = parent; 
this.plugins = [] ; 
this._pluginsLength = 0; 
} 
; 
Phaser.PluginManager.prototype = { 
add: function (plugin){ 
var result = false ; 
if (typeof plugin === 'function') { 
plugin = new plugin(this.game, this._parent); 
} 
 else { 
plugin.game = this.game; 
plugin.parent = this._parent; 
} 
if (typeof plugin.preUpdate === 'function') { 
plugin.hasPreUpdate = true ; 
result = true ; 
} 
if (typeof plugin.update === 'function') { 
plugin.hasUpdate = true ; 
result = true ; 
} 
if (typeof plugin.render === 'function') { 
plugin.hasRender = true ; 
result = true ; 
} 
if (typeof plugin.postRender === 'function') { 
plugin.hasPostRender = true ; 
result = true ; 
} 
if (result) { 
if (plugin.hasPreUpdate || plugin.hasUpdate) { 
plugin.active = true ; 
} 
if (plugin.hasRender || plugin.hasPostRender) { 
plugin.visible = true ; 
} 
this._pluginsLength = this.plugins.push(plugin); 
return plugin; 
} 
 else { 
return null ; 
} 
} 
,
remove: function (plugin){ 
this._pluginsLength-- ; 
} 
,
preUpdate: function (){ 
if (this._pluginsLength == 0) { 
return ; 
} 
for (this._p = 0; this._p < this._pluginsLength; this._p++ ){ 
if (this.plugins[this._p].active && this.plugins[this._p].hasPreUpdate) { 
this.plugins[this._p].preUpdate(); 
} 
} 
} 
,
update: function (){ 
if (this._pluginsLength == 0) { 
return ; 
} 
for (this._p = 0; this._p < this._pluginsLength; this._p++ ){ 
if (this.plugins[this._p].active && this.plugins[this._p].hasUpdate) { 
this.plugins[this._p].update(); 
} 
} 
} 
,
render: function (){ 
if (this._pluginsLength == 0) { 
return ; 
} 
for (this._p = 0; this._p < this._pluginsLength; this._p++ ){ 
if (this.plugins[this._p].visible && this.plugins[this._p].hasRender) { 
this.plugins[this._p].render(); 
} 
} 
} 
,
postRender: function (){ 
if (this._pluginsLength == 0) { 
return ; 
} 
for (this._p = 0; this._p < this._pluginsLength; this._p++ ){ 
if (this.plugins[this._p].visible && this.plugins[this._p].hasPostRender) { 
this.plugins[this._p].postRender(); 
} 
} 
} 
,
destroy: function (){ 
this.plugins.length = 0; 
this._pluginsLength = 0; 
this.game = null ; 
this._parent = null ; 
} 
}
;