查找球的目标位置 [英] Find destination position of ball

问题描述

如何根据触摸角度移动球，如果它碰到墙壁，球会反射？

How to move the ball dependent on touch angle and make the ball reflect if it touches the wall?

CGFloat diffX = ballImg.position.x - tchLoc.x;
CGFloat diffY = ballImg.position.y - tchLoc.y;
CGFloat angleRadian = atan2f(diffY, diffX);

float angleDegrees=CC_RADIANS_TO_DEGREES(angleRadian);

推荐答案

我认为你已经把你的球精灵。所以在touchesBegan，你会得到触摸位置，然后你可以使用CCMoveTo动作移动你的球是一个精灵的位置点.....

I am considering that you have taken your ball as a sprite. so in touchesBegan you will get the touch location and then you can use that location points in CCMoveTo action to move your ball which is a sprite.....

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