ボールが四方に広がるの。forked from: flash on 2010-3-2
クリック箇所を中心点として、ボールはそこを基点に四方に広がる。
@author SIHO
/**
* Copyright SIHO ( http://wonderfl.net/user/SIHO )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/1xQa
*/
// forked from paq's flash on 2010-3-2
package
{
import Box2D.Common.Math.b2Vec2;
import Box2D.Dynamics.b2Body;
import com.actionsnippet.qbox.QuickBox2D;
import flash.display.MovieClip;
import flash.events.Event;
import flash.events.MouseEvent;
/**
* クリック箇所を中心点として、ボールはそこを基点に四方に広がる。
* @author SIHO
*/
[SWF(backgroundColor="0xFFFFFF", width=465, height=465, frameRate=60)]
public class Main extends MovieClip
{
private var _qbox:QuickBox2D;
private var _fixedPoint:b2Vec2 = new b2Vec2(7.75, 7.75);
private var _objDataArray:Array = [{x:10, y:10,radius:1},{x:7, y:3,radius:1},{x:3, y:7,radius:1} ];
private var objArray:Array = [];
public function Main():void
{
if (stage) init();
else addEventListener(Event.ADDED_TO_STAGE, init);
}
private function init(e:Event = null):void
{
removeEventListener(Event.ADDED_TO_STAGE, init);
build2D();
stage.addEventListener(MouseEvent.MOUSE_DOWN,onMouseDown);
}
private function build2D():void{
_qbox = new QuickBox2D(this, { gravityY:0 } );
_qbox.createStageWalls();
objArray[0] = _qbox.addCircle( _objDataArray[0]);
objArray[1] = _qbox.addCircle( _objDataArray[1] );
objArray[2] = _qbox.addCircle( _objDataArray[2] );
_qbox.start();
addEventListener(Event.ENTER_FRAME, loop);
}
private function onMouseDown(e:MouseEvent):void
{
objArray[0].destroy();
objArray[1].destroy();
objArray[2].destroy();
_fixedPoint = new b2Vec2(mouseX/30, mouseY/30);
build2D();
}
private function loop(e:Event):void
{
//ここ重要----------------------------------------
for (var body:b2Body = _qbox.w.m_bodyList; body ; body = body.GetNext())
{
if (body.IsSleeping())continue;
var f:b2Vec2 = _fixedPoint.Copy();
f.Subtract(body.GetPosition());
f.Normalize();
f.Multiply(80);
f = f.Negative();
body.ApplyForce(f, body.GetWorldCenter());
}
//----------------------------------------
}
}
}