[sourcecode language=”java”]
package
{
import flash.display.Sprite;
import flash.events.Event;
public class Distance2 extends Sprite
{
private var ball1:Ball;
private var ball2:Ball;
public function Distance2()
{
init();
}
private function init():void
{
ball1 = new Ball(Math.random() * 100);
addChild(ball1);
ball1.x = stage.stageWidth / 2;
ball1.y = stage.stageHeight / 2;
ball2 = new Ball(Math.random() * 100);
addChild(ball2);
ball2.startDrag(true);
addEventListener(Event.ENTER_FRAME, onEnterFrame);
}
private function onEnterFrame(event:Event):void
{
var dx:Number = ball2.x – ball1.x;
var dy:Number = ball2.y – ball1.y;
var dist:Number = Math.sqrt(dx * dx + dy * dy);
//ここで重なりの判定
if(dist < ball1.radius + ball2.radius)
{
trace("ヒット");
}
}
}
}
[/sourcecode]