forked from: forked from: [QuickBox2D] Doll in space

/**
 * Copyright dizgid ( http://wonderfl.net/user/dizgid )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/reN5
 */

// forked from a24's forked from: [QuickBox2D] Doll in space
// forked from paq's [QuickBox2D] Doll in space

package 
{
    import Box2D.Common.Math.b2Vec2;
    import Box2D.Dynamics.b2Body;
    import com.actionsnippet.qbox.objects.CircleObject;
    import com.actionsnippet.qbox.QuickBox2D;
    import com.actionsnippet.qbox.QuickObject;
    import flash.display.MovieClip;
    import flash.display.StageScaleMode;
    import flash.events.Event;
    import flash.events.MouseEvent;
    
    [SWF(width = 465, height = 465, backgroundColor = 0x333333, frameRate = 60)]
    
    public class Sample extends MovieClip
    {
        private var sim:QuickBox2D;
        private var fixedPoint:b2Vec2 = new b2Vec2(7.25, 7.25);
        private var scale:Number = 30;
        private var balls:Array = new Array();
        
        public function Sample():void 
        {
            if (stage) init();
            else addEventListener(Event.ADDED_TO_STAGE, init);
        }
        
        private function init(e:Event = null):void 
        {
            removeEventListener(Event.ADDED_TO_STAGE, init);
            
            stage.scaleMode = StageScaleMode.NO_SCALE;
            
            sim = new QuickBox2D(this);
            sim.gravity = new b2Vec2(0, 30);
            sim.iterations = 10;
            sim.createStageWalls();
            
            sim.setDefault( { fillColor:0xFFFFFF, lineColor:0x333333 } );
            
            for (var i:int = 0; i < 100; i++) 
            {
                balls.push(sim.addCircle( { x:Math.random() * 15.5, y:Math.random() * 7, radius:0.6 } ));
            }
            
            sim.start();
            sim.mouseDrag();
            
            addEventListener(MouseEvent.CLICK, clickHandler);
        }
        
        private function clickHandler(e:MouseEvent):void 
        {
            removeEventListener(MouseEvent.CLICK, clickHandler);
            
            sim.addCircle( { x:7.25, y:7.25, radius:1.6, density:0 } );
            
            for (var i:int = 0; i < 10; i++) 
            {
                var ball:QuickObject = balls[i];
                sim.addCircle( { x:ball.x, y:ball.y, radius:0.2 } );
                ball.fullDestroy();
            }
            
            addEventListener(Event.ENTER_FRAME, loop);
        }
        
        private function loop(e:Event):void 
        {
            for ( var i:int = 0; i < balls.length; i ++ )
            {
                var ball:QuickObject = balls[i];
                var fp:b2Vec2 = fixedPoint.Copy();
                fp.Subtract(ball.body.GetPosition());
                fp.Normalize();
                fp.Multiply(50);
                ball.body.ApplyForce(fp, ball.body.GetWorldCenter());
                ball.body.ApplyForce(new b2Vec2(0, -30), ball.body.GetWorldCenter());
            }
        }
    }
}