【練習】ボールと板の跳ね返り（不十分）

by Tamanegi_kenshi 28 Mar 2010

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

package {
    import flash.display.Sprite;
    import flash.events.Event;
    import flash.geom.Rectangle;
    
    public class FlashTest extends Sprite {
    	
    	private var ball:Ball;
    	private var rect:Rect;
    	private var ballRadius:int =20;//ballの半径
    	private var friction:Number=1.1;
    	private var gravity:Number=0;
    	private var bounce:Number=-1;
    	
    	
        public function FlashTest() {
           init();           
        }
        private function init():void{
//ボールの作成
        	ball = new Ball(0x00ff00,ballRadius);
        	addChild(ball);
        	ball.x=ball.y=100;
        ball.vx=(Math.random()*10)+5;
        ball.vy=Math.random()*10;
        
        	
        	
//長方形の作成        	
        	rect = new Rect(200);
        	addChild(rect);
        	rect.y=400;
        	rect.rotation=0;
        	
        	
        	
        	
        	
        	addEventListener(Event.ENTER_FRAME,onEnter);
        	}

//EnterFrameの設定***********************************************************
        private function onEnter(event:Event):void{
        	rect.x =mouseX;
        
        	
        	
        	
        	
        	
        	       
       
        	ball.vy+=gravity;
        	ball.x+=ball.vx;
        	ball.y+=ball.vy;
 

       
        
       
//ballとrectとの跳ね返り

        var bound:Rectangle=rect.getBounds(this);
        if(ball.x>bound.left && ball.x<bound.right){
           	
        	var angle:Number=rect.rotation*Math.PI/180;
        	var cos:Number=Math.cos(angle);
        	var sin:Number=Math.sin(angle);
        	
        	var x1:Number=ball.x-rect.x;
        	var y1:Number=ball.y-rect.y;
        	
        
        	var y2:Number=cos*y1-sin*x1;
        	
        	 var vy1:Number=cos*ball.vy-sin*ball.vx;
        
        	
        	if(y2>-ball.height/2 && y2<vy1){
        		
        
        	var x2:Number=cos*x1+sin*y1;
        	
        
        	var vx1:Number=cos*ball.vx+sin*ball.vy;
       
        	
        	
        	y2=-ball.height/2;
        		vy1*=bounce;
        		
        	x1=cos*x2-sin*y2;
        	
        	y1=cos*y2+sin*x2;
        	ball.vx=cos*vx1-sin*vy1;
        	ball.vy=cos*vy1+sin*vx1;
        	ball.x=rect.x+x1;
        	ball.y=rect.y+y1;
        		
        }
        }
        	
//壁との跳ね返りの設定  
        	if(ball.x+ballRadius>stage.stageWidth){
        			ball.x=stage.stageWidth-ballRadius;
        			ball.vx *=-1;
        			}else if(ball.x<ballRadius){
        				ball.x=0+ballRadius;
        				ball.vx *=-1;
        				}else if(ball.y+ballRadius>stage.stageHeight){
        					
        					ball.vy*=-1;
        					}else if(ball.y<0+ballRadius){
        						ball.y=0+ballRadius;
        						ball.vy *=-1;
       						}
        	
        	
        	}
        
    }
}

//*********************************************************************************
//*********************************************************************************
//Ballクラスの作成
import flash.display.Sprite;
import flash.display.GradientType;
import flash.geom.Matrix;

import flash.accessibility.Accessibility;
class Ball extends Sprite{
	
	public var vx:Number=0;
	public var vy:Number=0;
	
	
	public function Ball(color:uint=0x000000,size:int=10){

	    	
	    	
	    	graphics.beginFill(color);
	    	graphics.drawCircle(0,0,size);
	    graphics.endFill();
	}	
}

//Rectクラスの作成
import flash.display.Sprite;

class Rect extends Sprite{
	
	public function Rect(size:uint){
	    	graphics.beginFill(0x000000);
	    	graphics.drawRect(-size/2,-5/2,size,10);
	   
	}	
}