Laya 屏幕抖动

Laya 屏幕抖动

@author ixenos 2020-05-13 12:07:37

package
{

    import laya.maths.Rectangle;
    import laya.ui.Box;

    public class ShakeCamera
    {
        private static var _ins:ShakeCamera;
        
        private var _camera:Box;

        private var _shakeTime:Number = 0;
        private var _extent:Number = 0;//幅度
        
        private var _enableShake:Boolean = true;
        
        public function ShakeCamera()
        {
        }

        public static function get ins():ShakeCamera
        {
            if(!_ins){
                _ins = new ShakeCamera();
            }
            return _ins;
        }
        
        public function init(cam:Box,shakeTime:Number=200,extent:Number=10):void{
            _camera = cam;
            
            _shakeTime = shakeTime;
            _extent = extent;
            
            enableShake = false;
        }

        public function update():void{
            if(enableShake && _camera){
                if(_shakeTime > 0){
                    _shakeTime -= Laya.timer.delta;
                    if(_shakeTime <= 0){
                        _camera.pos(0,0);
                        enableShake = false;
                    }else{
//                        _camera.pos(-_extent*0.5+_extent*Math.random(),0);
                        var posY:int = Math.floor(-_extent*0.5+_extent*Math.random());
                        _camera.pos(0,posY);
                    }
                }
            }
        }

        public function get enableShake():Boolean
        {
            return _enableShake;
        }

        public function set enableShake(value:Boolean):void
        {
            _enableShake = value;
        
            if(_enableShake){
                Laya.timer.clear(this,update);
                Laya.timer.frameLoop(1,this,update);
            }else{
                Laya.timer.clear(this,update);
            }
        }

        
    }
}