//設置mc_ball跟mc_ground的碰撞
//Because this is AS3 everything needs to be called through
//eventlisteners, so this first lin calls and listens for the ball
ball.addEventListener(Event.ENTER_FRAME, enter_frame);
//here is our function, it is called at the beginning of the movie
function enter_frame(event:Event):void{
//An if statement, saying if the ball touches the ground,
//then just make a trace of text.
if (ball.hitTestObject(ground)) {
trace("碰撞了")
} else {
trace("還沒碰撞")
}
}
oringinal code from here
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