Forked from:: matsu4512's StarDust

[Stardust] StarDust

題名的にやるしかない！と思ったのでfork

forked:4
favorite:20
lines:132
license : MIT License
modified : 2010-02-11 16:54:09

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package
{
	import flash.display.Bitmap;
	import flash.display.BitmapData;
	import flash.display.BitmapDataChannel;
	import flash.display.Sprite;
	import flash.events.Event;
	import flash.events.MouseEvent;
	import flash.filters.BlurFilter;
	import flash.filters.DisplacementMapFilter;
	import flash.filters.GlowFilter;
	import flash.geom.ColorTransform;
	import idv.cjcat.stardust.common.clocks.SteadyClock;
	import idv.cjcat.stardust.twoD.renderers.DisplayObjectRenderer;
	
	/*
	 * 題名的にやるしかない！と思ったのでfork
	 */
	[SWF(backgroundColor="0x000000", width=465, height=465, frameRate=60)]
	public class StarDust extends Sprite
	{
		//色を変化させるためのもの
		private var colorTrans:ColorTransform;

//大量のボールを描画するSprite
		private var canvas:Sprite;
		//表示用Bitmap
		private var bmp:Bitmap;
		//canvasの内容を記録するためのBitmapData
		private var bmpData:BitmapData;
		
		// エミッター
		private var emitter:StarDustEmitter;

public function StarDust()
		{
			colorTrans=new ColorTransform(0.8, 0.95, 0.99, 0.9);

canvas = new Sprite();
			bmpData=new BitmapData(512, 512, true, 0xFF00000);
			bmp=new Bitmap(bmpData);
			addChild(bmp);
			
			// エミッターとレンダラーを作成
			emitter = new StarDustEmitter(new SteadyClock(1), new GlowFilter(0, 1, 16, 16, 2));
			var renderer:DisplayObjectRenderer = new DisplayObjectRenderer(canvas);
			renderer.addEmitter(emitter);
			
			addEventListener(Event.ENTER_FRAME, onEnterFrame);
		}

private function onEnterFrame(event:Event):void
		{
			// エミッターを更新
			emitter.point.x = mouseX;
			emitter.point.y = mouseY;
			emitter.step();
			
			//canvas上に描かれている内容をbmpDataに格納
			bmpData.draw(canvas);
			//色変化エフェクトを適用
			bmpData.colorTransform(bmpData.rect, colorTrans);
		}
	}
}

import flash.display.Sprite;
import flash.filters.GlowFilter;
import idv.cjcat.stardust.common.actions.Action;
import idv.cjcat.stardust.common.clocks.Clock;
import idv.cjcat.stardust.common.emitters.Emitter;
import idv.cjcat.stardust.common.math.UniformRandom;
import idv.cjcat.stardust.common.particles.Particle;
import idv.cjcat.stardust.twoD.actions.Action2D;
import idv.cjcat.stardust.twoD.actions.DeathZone;
import idv.cjcat.stardust.twoD.actions.Gravity;
import idv.cjcat.stardust.twoD.actions.Move;
import idv.cjcat.stardust.twoD.actions.Spin;
import idv.cjcat.stardust.twoD.emitters.Emitter2D;
import idv.cjcat.stardust.twoD.fields.UniformField;
import idv.cjcat.stardust.twoD.initializers.DisplayObjectClass;
import idv.cjcat.stardust.twoD.initializers.Omega;
import idv.cjcat.stardust.twoD.initializers.Position;
import idv.cjcat.stardust.twoD.initializers.Velocity;
import idv.cjcat.stardust.twoD.particles.Particle2D;
import idv.cjcat.stardust.twoD.zones.CircleZone;
import idv.cjcat.stardust.twoD.zones.LazySectorZone;
import idv.cjcat.stardust.twoD.zones.RectZone;
import idv.cjcat.stardust.twoD.zones.SinglePoint;

class StarDustEmitter extends Emitter2D 
{
	public var point:SinglePoint;
	
	public function StarDustEmitter(clock:Clock, grow:GlowFilter)
	{
		super(clock);
		
		// イニシャライザーを登録
		point = new SinglePoint();
		var position:Position = new Position(point);
		addInitializer(position);
		addInitializer(new DisplayObjectClass(Star, [grow]));
		addInitializer(new Velocity(new CircleZone(0, 0, 5)));
		addInitializer(new Omega(new UniformRandom(5, 5)));
		
		// アクションを登録
		var gravity:Gravity = new Gravity();
		gravity.addField(new UniformField(0.15, 0.2));
		addAction(gravity);
		addAction(new Move());
		addAction(new DeathZone(new RectZone(0, 0, 465, 465), true));
		addAction(new Spin());
		addAction(new StarAction());
	}
}

class StarAction extends Action
{
	public function StarAction(){}
	override public function update(emitter:Emitter, particle:Particle, time:Number):void
	{
		particle.target.z += particle.target.vz;
	}
}

class Star extends Sprite
{
	public var vz:Number;

public function Star(glow:GlowFilter)
	{
		vz = -Math.random() * 10;
		
		//Glowの色の設定
		glow.color = Math.random() * 0xffffff;
		//フィルターの適用
		filters = [glow];
		
		var r:Number = Math.random() * 8 + 5;
		var p:int = 5;
		
		var r2:Number=r / 2;
		var angle:Number=-90;
		var addtion:Number=360 / (p * 2);
		graphics.beginFill(0xffffff);
		graphics.moveTo(0, -r);
		for (var i:int=0; i < p * 2; i++)
		{
			angle+=addtion;
			var to_x:Number;
			var to_y:Number;
			var radian:Number=angle * Math.PI / 180;
			if (i % 2)
			{
				to_x=r * Math.cos(radian);
				to_y=r * Math.sin(radian);
			}
			else
			{
				to_x=r2 * Math.cos(radian);
				to_y=r2 * Math.sin(radian);
			}
			graphics.lineTo(to_x, to_y);
		}
		graphics.endFill();
	}
}

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