Laya 屏幕抖动

 1 package
 2 {
 3 
 4     import laya.maths.Rectangle;
 5     import laya.ui.Box;
 6 
 7     public class ShakeCamera
 8     {
 9         private static var _ins:ShakeCamera;
10         
11         private var _camera:Box;
12 
13         private var _shakeTime:Number = 0;
14         private var _extent:Number = 0;//幅度
15         
16         private var _enableShake:Boolean = true;
17         
18         public function ShakeCamera()
19         {
20         }
21 
22         public static function get ins():ShakeCamera
23         {
24             if(!_ins){
25                 _ins = new ShakeCamera();
26             }
27             return _ins;
28         }
29         
30         public function init(cam:Box,shakeTime:Number=200,extent:Number=10):void{
31             _camera = cam;
32             
33             _shakeTime = shakeTime;
34             _extent = extent;
35             
36             enableShake = false;
37         }
38 
39         public function update():void{
40             if(enableShake && _camera){
41                 if(_shakeTime > 0){
42                     _shakeTime -= Laya.timer.delta;
43                     if(_shakeTime <= 0){
44                         _camera.pos(0,0);
45                         enableShake = false;
46                     }else{
47 //                        _camera.pos(-_extent*0.5+_extent*Math.random(),0);
48                         var posY:int = Math.floor(-_extent*0.5+_extent*Math.random());
49                         _camera.pos(0,posY);
50                     }
51                 }
52             }
53         }
54 
55         public function get enableShake():Boolean
56         {
57             return _enableShake;
58         }
59 
60         public function set enableShake(value:Boolean):void
61         {
62             _enableShake = value;
63         
64             if(_enableShake){
65                 Laya.timer.clear(this,update);
66                 Laya.timer.frameLoop(1,this,update);
67             }else{
68                 Laya.timer.clear(this,update);
69             }
70         }
71 
72         
73     }
74 }