forked from: forked from: SPRING TO MOUSE
Main
メインクラス.
/**
* Copyright taka_milk ( http://wonderfl.net/user/taka_milk )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/49jy
*/
// forked from kazy's forked from: SPRING TO MOUSE
// forked from kazy's SPRING TO MOUSE
package
{
import flash.display.Sprite;
import flash.events.Event;
/**
* Main
* メインクラス.
*/
public class Main extends Sprite
{
private var ball0:Ball;
private var ball1:Ball;
private var ball2:Ball;
private var spring:Number = 0.1;
private var friction:Number = 0.8;
private var gravity:Number = 5;
/**
* コンストラクタ.
*/
public function Main()
{
init();
}
/**
* 初期化.
*/
private function init():void
{
ball0 = new Ball(20);
addChild(ball0);
ball1 = new Ball(20);
addChild(ball1);
ball2 = new Ball(20);
addChild(ball2);
addEventListener(Event.ENTER_FRAME, onEnterFrame);
}
/**
* onEnterFrame.
*/
private function onEnterFrame(event:Event):void
{
//ばねの動きをさせる
moveBall(ball0, mouseX, mouseY);
moveBall(ball1, ball0.x, ball0.y);
moveBall(ball2, ball1.x, ball1.y);
//ラインを描く
graphics.clear();
graphics.lineStyle(1);
graphics.moveTo(mouseX, mouseY);
graphics.lineTo(ball0.x, ball0.y);
graphics.lineTo(ball1.x, ball1.y);
graphics.lineTo(ball2.x, ball2.y);
}
/**
* ばねの動き.
*/
private function moveBall(ball:Ball, targetX:Number, targetY:Number):void
{
//バネ
ball.vx += (targetX - ball.x) * spring;
ball.vy += (targetY - ball.y) * spring;
//重力
ball.vy += gravity;
//減速
ball.vx *= friction;
ball.vy *= friction;
//ボールの座標に適応
ball.x += ball.vx;
ball.y += ball.vy;
}
}
}
/**
* Ball
* ボール生成クラス.
*/
class Ball extends flash.display.Sprite {
public var radius:Number;
private var color:uint;
public var vx:Number = 0;
public var vy:Number = 0;
/**
* コンストラクタ.
*/
public function Ball(radius:Number=40, color:uint=0x990033) {
this.radius = radius;
this.color = color;
init();
}
/**
* 初期化.
*/
public function init():void {
graphics.beginFill(color);
graphics.drawCircle(0, 0, radius);
graphics.endFill();
}
}