as3找到块的偏移量

I am trying to make a pong like game but i need to find the offset from the center of the paddle so that i can make it bounce differently depending on where it hits the paddle. How can i achieve this?

我试图做一个像乒乓球一样的乒乓球,但我需要找到从球拍中心的偏移量,这样我就可以根据它击中球拍的位置使其反弹。我怎样才能做到这一点?

1 个解决方案

#1

Try:

   // get the center of the paddle
    var centerXpaddle = paddle.x - paddle.width/2;
    var centerYpaddle =  paddle.y -paddle.height/2;

if (objectThatHits.hitTestObject(paddle)) {
    // get the current point of object
   var offsetX = objectThatHits.x - centerXpaddle;
   var offsetY = objectThatHits.y - centerYpaddle;
}

The first two lines get the center of the the paddle (it's current position minus half the width and half the height) and the second part is a "test" for when the "object that hits" hits the "paddle".

前两条线获得桨的中心(它的当前位置减去宽度的一半和高度的一半),第二部分是“测试”,当“击中的物体”击中“桨”时。