forked from: base

/**
 * Copyright _wonder ( http://wonderfl.net/user/_wonder )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/qB45
 */

// forked from _wonder's base
package {
    import flash.display.Sprite;
    import flash.events.Event;
    import flash.geom.Rectangle;
    
    public class FlashTest extends Sprite {
    		private var ball:Ball;
    		private var lines:Array;
    		private var numLines:uint = 5;
    		private var gravity:Number = 0.3;
    		private var bounce:Number = -0.6;
    		
    		public function FlashTest() {
            init();
        }
        
        private function init():void {
        		ball = new Ball(20);
        		addChild( ball );
        		ball.x = 100;
        		ball.y = 50;
        		
        		//線の生成
        		lines = new Array();
        		for( var i:int = 0; i < numLines; i++ ){
        			var line:Sprite = new Sprite();
        			line.graphics.lineStyle(1);
        			line.graphics.moveTo(-50,0);
        			line.graphics.lineTo(50,0);
        			addChild( line );
        			lines.push( line );
        		}
        		
        		//線の配置
        		lines[0].x = 100;
        		lines[0].y = 100;
        		lines[0].rotation = 30;
        		
        		lines[1].x = 100;
        		lines[1].y = 230;
        		lines[1].rotation = 45;
        		
        		lines[2].x = 250;
        		lines[2].y = 180;
        		lines[2].rotation = -30;
        		
        		lines[3].x = 150;
        		lines[3].y = 330;
        		lines[3].rotation = 10;
        		
        		lines[4].x = 230;
        		lines[4].y = 250;
        		lines[4].rotation = -30;
        		
        		addEventListener(Event.ENTER_FRAME, onEnterFrame);
        }
        
        private function onEnterFrame(e:Event):void {
        		//normal
        		ball.vy += gravity;
        		ball.x += ball.vx;
        		ball.y += ball.vy;
        		
        		//枠
        		if( ball.x + ball.radius > stage.stageWidth ){
        			ball.x = stage.stageWidth - ball.radius;
        			ball.vx *= bounce;
        		} else if( ball.x - ball.radius < 0 ){
        			ball.x = ball.radius;
        			ball.vx *= bounce;
        		}
        		
        		if( ball.y + ball.radius > stage.stageHeight ){
        			ball.y = stage.stageHeight - ball.radius;
        			ball.vy *= bounce;
        		} else if( ball.y - ball.radius < 0 ){
        			ball.y = ball.radius;
        			ball.vy *= bounce;
        		}
        		
        		for( var i:uint = 0; i < numLines; i++ ){
        			checkLine( lines[i] );
        		}
        }
        
        private function checkLine(line:Sprite):void {
        		var bounds:Rectangle = line.getBounds(this);
        		if( ball.x > bounds.left && ball.x < bounds.right ){
        			var angle:Number = line.rotation * Math.PI / 180;
        			var cos:Number = Math.cos( angle );
        			var sin:Number = Math.sin( angle );
        			
        			var x1:Number = ball.x - line.x;
        			var y1:Number = ball.y - line.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 = line.x + x1;
        				ball.y = line.y + y1;
        			}
        		}
        }
    }
}

import flash.display.Sprite;

class Ball extends Sprite {
	public var radius:Number;
	public var color:uint;
	public var vx:Number = 0;
	public var vy:Number = 0;
	
	public function Ball(radius:Number=40, color:uint=0Xff0000){
		this.radius = radius;
		this.color = color;
		init();
	}
	
	public function init():void {
		graphics.beginFill(color);
		graphics.drawCircle(0, 0, radius);
		graphics.endFill();
	}
}