var Class = require('../../utils/Class'); 
var GetValue = require('../../utils/object/GetValue'); 
var Merge = require('../../utils/object/Merge'); 
var NOOP = require('../../utils/NOOP'); 
var Arcade = require('../../physics/arcade/Arcade'); 
var Impact = require('../../physics/impact/Impact'); 
var Matter = require('../../physics/matter-js/Matter'); 
var PhysicsManager = new Class({ 
initialize: function PhysicsManager(scene){ 
this.scene = scene; 
this.gameConfig = scene.sys.game.config.physics; 
this.defaultSystem = scene.sys.game.config.defaultPhysicsSystem; 
this.sceneConfig = scene.sys.settings.physics; 
this.system; 
this.world = { 
update: NOOP,
postUpdate: NOOP,
shutdown: NOOP,
destroy: NOOP}
; 
this.add; 
} 
,
boot: function (){ 
var sceneSystem = GetValue(this.sceneConfig, 'system', false ); 
if (!this.defaultSystem && !sceneSystem) { 
return ; 
} 
var system = (sceneSystem !== false )? sceneSystem: this.defaultSystem; 
var config = Merge(this.sceneConfig, GetValue(this.gameConfig, system, { 
}
)); 
switch (system){ 
case 'arcade': this.system = new Arcade(this, config); 
break ; 
case 'impact': this.system = new Impact(this, config); 
break ; 
case 'matter': this.system = new Matter(this, config); 
break ; 
} 
} 
,
remove: function (object){ 
this.world.remove(object); 
} 
,
update: function (time, delta){ 
this.world.update(time, delta); 
} 
,
postUpdate: function (){ 
this.world.postUpdate(); 
} 
,
shutdown: function (){ 
this.world.shutdown(); 
} 
,
destroy: function (){ 
this.world.destroy(); 
} 
}
); 
module.exports = PhysicsManager;