flash on 2010-1-8

/**
 * Copyright hacker_yk666qry ( http://wonderfl.net/user/hacker_yk666qry )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/yhPj
 */

// forked from yd_niku's ExtentionExample
package {
    import flash.display.Sprite;
    public class FlashTest extends Sprite {
        public function FlashTest() {
            var ball:Sprite= new BallSprite(0xFF9933);
            ball.x = 50;
            ball.y = 50
            addChild( ball );
            
            var moveBall:Sprite= new MoveBallSprite (0x000066);
            moveBall.x = 100;
            moveBall.y = 50
            addChild( moveBall );
            
            var dropBall:Sprite= new DropBallSprite(0x006600);
            dropBall.x = 150;
            dropBall.y = 50
            addChild( dropBall );
            

        }
    }
}

import flash.display.*;
import flash.events.*;

class BallSprite extends Sprite {
    public function BallSprite( color:uint ){
        super();
        
        graphics.beginFill(color);
        graphics.drawCircle( 0, 0, 10 );
        graphics.endFill();
    }
}

import flash.events.*;

class MoveBallSprite extends BallSprite {
	public var velocityX:Number = 2;
	public var velocityY:Number = 3;
	
	public function MoveBallSprite(color:uint) {
		super(color);
		addEventListener(Event.ENTER_FRAME,updatePosition);
	}
	
	private function updatePosition(e:Event):void {
		x += velocityX;
		y += velocityY;
	}
}


class DropBallSprite extends MoveBallSprite {
	public var gravity:Number = 0.6;
	
	public function DropBallSprite(color:uint) {
		super(color);
		addEventListener(Event.ENTER_FRAME, updateVelocity);
	}
	
	private function updateVelocity(e:Event):void {
		velocityY += gravity;
	}
}