cocos2d-js 闪电效果

实现代码： 

drawLighting: function ()
    {
        var self = this;
        var start = cc.p(100,300);
        var end = cc.p(800,300);
        var displace = 200;
        self.drawNode.clear();
        var dl = function (x1, y1, x2, y2, displace)
        {
            if (displace < self.curDetail)
            {
                self.drawNode.drawSegment(cc.p(x1, y1), cc.p(x2, y2), 5, cc.color(255, 255, 255));
            }
            else
            {
                var mid_x = (x1 + x2) / 2;
                var mid_y = (y1 + y2) / 2;
                mid_x += (Math.random() - 0.5) * displace;
                mid_y += (Math.random() - 0.5) * displace;
                dl(x1, y1, mid_x, mid_y, displace / 2);
                dl(x2, y2, mid_x, mid_y, displace / 2);
            }
        };
        dl(start.x, start.y, end.x, end.y, displace);
    },

 

可以在每一帧调用一次：

update: function (dt)
{
    this.drawLighting();
}

 

以上内容摘自网络

 

来源：https://blog.csdn.net/wpj0304/article/details/99460170