Cocos2D-Android-1之源碼詳解：16.ParticleTest

package org.cocos2d.tests;

import org.cocos2d.actions.UpdateCallback;

import org.cocos2d.actions.base.CCRepeatForever;

import org.cocos2d.actions.interval.CCIntervalAction;

import org.cocos2d.actions.interval.CCMoveBy;

import org.cocos2d.actions.interval.CCRotateBy;

import org.cocos2d.actions.interval.CCSequence;

import org.cocos2d.layers.CCColorLayer;

import org.cocos2d.layers.CCLayer;

import org.cocos2d.layers.CCScene;

import org.cocos2d.menus.CCMenu;

import org.cocos2d.menus.CCMenuItemFont;

import org.cocos2d.menus.CCMenuItemImage;

import org.cocos2d.menus.CCMenuItemToggle;

import org.cocos2d.nodes.CCDirector;

import org.cocos2d.nodes.CCLabel;

import org.cocos2d.nodes.CCLabelAtlas;

import org.cocos2d.nodes.CCParallaxNode;

import org.cocos2d.nodes.CCSprite;

import org.cocos2d.nodes.CCTextureCache;

import org.cocos2d.opengl.CCGLSurfaceView;

import org.cocos2d.opengl.CCTextureAtlas;

import org.cocos2d.particlesystem.CCParticleExplosion;

import org.cocos2d.particlesystem.CCParticleFire;

import org.cocos2d.particlesystem.CCParticleFireworks;

import org.cocos2d.particlesystem.CCParticleFlower;

import org.cocos2d.particlesystem.CCParticleGalaxy;

import org.cocos2d.particlesystem.CCParticleMeteor;

import org.cocos2d.particlesystem.CCParticleRain;

import org.cocos2d.particlesystem.CCParticleSmoke;

import org.cocos2d.particlesystem.CCParticleSnow;

import org.cocos2d.particlesystem.CCParticleSpiral;

import org.cocos2d.particlesystem.CCParticleSun;

import org.cocos2d.particlesystem.CCParticleSystem;

import org.cocos2d.particlesystem.CCPointParticleSystem;

import org.cocos2d.particlesystem.CCQuadParticleSystem;

import org.cocos2d.types.CGPoint;

import org.cocos2d.types.CGRect;

import org.cocos2d.types.CGSize;

import org.cocos2d.types.ccColor3B;

import org.cocos2d.types.ccColor4B;

import org.cocos2d.types.ccColor4F;

import org.cocos2d.utils.javolution.MathLib;

import org.cocos2d.utils.javolution.TextBuilder;

import android.app.Activity;

import android.os.Bundle;

import android.view.MotionEvent;

import android.view.Window;

import android.view.WindowManager;

public class ParticleTest extends Activity {

    // private static final String LOG_TAG = AtlasSpriteTest.class.getSimpleName();

    private CCGLSurfaceView mGLSurfaceView;//建立view

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        requestWindowFeature(Window.FEATURE_NO_TITLE);//沒(méi)標(biāo)題..

        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,

                WindowManager.LayoutParams.FLAG_FULLSCREEN);//全屏

        getWindow().setFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON,

                WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);//不黑

        mGLSurfaceView = new CCGLSurfaceView(this);//建立新的view

        setContentView(mGLSurfaceView);//設(shè)置view

        // attach the OpenGL view to a window

        CCDirector.sharedDirector().attachInView(mGLSurfaceView);//把所有的圖像附加到view上

        // set landscape mode

        CCDirector.sharedDirector().setLandscape(false);//橫屏

        // show FPS

        CCDirector.sharedDirector().setDisplayFPS(true);//fps

        // frames per second

        CCDirector.sharedDirector().setAnimationInterval(1.0f / 60);//每1/60秒運(yùn)行一次

        CCScene scene = CCScene.node();//生成場(chǎng)景節(jié)點(diǎn)

        scene.addChild(nextAction());//場(chǎng)景布置

        // Make the Scene active

        CCDirector.sharedDirector().runWithScene(scene);//執(zhí)行

    }

    @Override

    public void onStart() {

        super.onStart();

    }

    @Override

    public void onPause() {

        super.onPause();

        CCDirector.sharedDirector().onPause();

    }

    @Override

    public void onResume() {

        super.onResume();

        CCDirector.sharedDirector().onResume();

    }

    @Override

    public void onDestroy() {

        super.onDestroy();

        CCDirector.sharedDirector().end();

        //CCTextureCache.sharedTextureCache().removeAllTextures();

    }

    static int sceneIdx = -1;

    static Class<?> transitions[] = {//類(lèi)集合

DemoFlower.class,

DemoGalaxy.class,

DemoFirework.class,

DemoSpiral.class,

DemoSun.class,

DemoMeteor.class,

DemoFire.class,

DemoSmoke.class,

DemoExplosion.class,

DemoSnow.class,

DemoRain.class,

DemoBigFlower.class,

DemoRotFlower.class,

DemoModernArt.class,

DemoRing.class,

ParallaxParticle.class,

/* we can't work on plist files now

ParticleDesigner1.class,

ParticleDesigner2.class,

ParticleDesigner3.class,

ParticleDesigner4.class,

ParticleDesigner5.class,

ParticleDesigner6.class,

ParticleDesigner7.class,

ParticleDesigner8.class,

ParticleDesigner9.class,

ParticleDesigner10.class,

ParticleDesigner11.class, */

RadiusMode1.class,

RadiusMode2.class,

// Issue704.class,

// Issue872.class,

// Issue870.class,

    };

    static CCLayer nextAction() {//動(dòng)作下一步

        sceneIdx++;

        sceneIdx = sceneIdx % transitions.length;

        return restartAction();

    }

    static CCLayer backAction() {//返回動(dòng)作

        sceneIdx--;

        if (sceneIdx < 0)

            sceneIdx += transitions.length;

        return restartAction();

    }

    static CCLayer restartAction() {//重置

        try {

            Class<?> c = transitions[sceneIdx];

            return (CCLayer) c.newInstance();

        } catch (Exception e) {

            e.printStackTrace();

            return null;

        }

    }

    static abstract class ParticleDemo extends CCColorLayer implements UpdateCallback {

        CCTextureAtlas atlas;//文字圖集

        static final int kTagLabelAtlas = 1;

        CCParticleSystem emitter;//創(chuàng)建離子系統(tǒng)

        CCSprite background;//創(chuàng)建背景精靈

        public ParticleDemo() {

            super(new ccColor4B(127,127,127,255));//顏色背景

            this.setIsTouchEnabled(true);//可以點(diǎn)擊

            CGSize s = CCDirector.sharedDirector().winSize();//得到大小

            CCLabel label = CCLabel.makeLabel(title(), "DroidSans", 18);//標(biāo)記

            label.setPosition(CGPoint.make(s.width / 2, s.height - 50));//設(shè)置位置

            addChild(label, 100);//添加子類(lèi)

            String subtitle = subtitle();//得到字符

    if( subtitle != null) {

    CCLabel l = CCLabel.makeLabel(subtitle, "DroidSerif", 16);//創(chuàng)建標(biāo)簽

    addChild(l, 100);//添加子類(lèi)

    l.setPosition(CGPoint.ccp(s.width/2, s.height-80));//設(shè)置位置

    }

//創(chuàng)建下列3個(gè)按鈕

            CCMenuItemImage item1 = CCMenuItemImage.item("b1.png", "b2.png", this, "backCallback");

            CCMenuItemImage item2 = CCMenuItemImage.item("r1.png", "r2.png", this, "restartCallback");

            CCMenuItemImage item3 = CCMenuItemImage.item("f1.png", "f2.png", this, "nextCallback");

//添加一個(gè)標(biāo)簽按鈕，這個(gè)標(biāo)簽每次點(diǎn)擊會(huì)切換字符串

            CCMenuItemToggle item4 = CCMenuItemToggle.item(this,"toggleCallback",

                                     CCMenuItemFont.item("Free Movement"),//散開(kāi)的效果

                                     CCMenuItemFont.item("Grouped Movement"));//圓效果

//把按鈕添加進(jìn)去

            CCMenu menu = CCMenu.menu(item1, item2, item3, item4);//添加進(jìn)菜單

            menu.setPosition(CGPoint.make(0, 0));//設(shè)置位置

            item1.setPosition(CGPoint.make(s.width / 2 - 100, 30));

            item2.setPosition(CGPoint.make(s.width / 2, 30));

            item3.setPosition(CGPoint.make(s.width / 2 + 100, 30));

            item4.setPosition(CGPoint.ccp(0, 100));

            item4.setAnchorPoint(CGPoint.ccp(0,0));//設(shè)置錨點(diǎn)

            addChild(menu, 100);//菜單頂置

            CCLabelAtlas labelAtlas = CCLabelAtlas.label("0000", "fps_p_w_picpaths.png", 16, 24, '.');//標(biāo)簽圖

            addChild(labelAtlas, 100, kTagLabelAtlas);//添加子類(lèi)

            labelAtlas.setPosition(CGPoint.make(s.width-66, 50));//設(shè)置頂點(diǎn)

            // moving background

            background = CCSprite.sprite("background3.png");//創(chuàng)建精靈

            addChild(background, 5);//添加子類(lèi)

            background.setPosition(CGPoint.make(s.width/2, s.height-180));

//設(shè)置位置

            CCIntervalAction move = CCMoveBy.action(4, CGPoint.ccp(300, 0));//移動(dòng)

            CCIntervalAction move_back = move.reverse();//反移動(dòng)

            CCIntervalAction seq = CCSequence.actions(move, move_back);//創(chuàng)建連

            background.runAction(CCRepeatForever.action(seq));//執(zhí)行

            this.scheduleUpdate();//設(shè)置0優(yōu)先等級(jí)的更新

        }

        @Override

        public boolean ccTouchesBegan(MotionEvent e){//點(diǎn)擊事件開(kāi)始

        // claim the touch

        return true;

        }

        @Override

        public boolean ccTouchesMoved(MotionEvent e) {//點(diǎn)擊移動(dòng)

        return true;

        }

        @Override

        public boolean ccTouchesEnded(MotionEvent e) {//點(diǎn)擊結(jié)束

        CGPoint location = CGPoint.ccp(e.getX(), e.getY());//定義點(diǎn)

        CGPoint convertedLocation = CCDirector.sharedDirector().convertToGL(location);

//轉(zhuǎn)換坐標(biāo)

        CGPoint pos = CGPoint.zero();//得到原點(diǎn)0.0

        if( background != null)//如果背景層不為空

        pos = background.convertToWorldSpace(0, 0);//轉(zhuǎn)換為世界坐標(biāo)

        emitter.setPosition(CGPoint.ccpSub(convertedLocation, pos));//做差

        return true;

        }

        private TextBuilder particleCountString = new TextBuilder();//字符串

        // String.format("%4d", emitter.getParticleCount())//這是要格式化成4位

        private TextBuilder getParticleCountString(int c) {//得到字符串的方法

        int len = MathLib.digitLength(c);//得到c的長(zhǎng)度

        int zeros = 4 - len;//用4-c

        while (zeros-- > 0) {//一直循環(huán)-1，只要大于0就繼續(xù)做

particleCountString.append('0');//補(bǔ)0

}

        particleCountString.append(c);//把c添加進(jìn)去

        return particleCountString;//返回字符

        }

        public void update(float dt) {//重寫(xiě)每幀的執(zhí)行

        CCLabelAtlas atlas = (CCLabelAtlas) getChildByTag(kTagLabelAtlas);//得到標(biāo)簽

        particleCountString.reset();//清楚掉字符

//        String str = String.format("%4d", emitter.getParticleCount());

        atlas.setString(getParticleCountString(emitter.getParticleCount()));//設(shè)置標(biāo)簽字符

        }

        public void toggleCallback(Object sender) {//由剛才那個(gè)點(diǎn)擊得到這個(gè)事件。每次看看自己的參數(shù)設(shè)置，如果是grop的就設(shè)為free的，否則就射為group的

            if( emitter.getPositionType() == CCParticleSystem.kCCPositionTypeGrouped )

                emitter.setPositionType(CCParticleSystem.kCCPositionTypeFree);

            else

                emitter.setPositionType(CCParticleSystem.kCCPositionTypeGrouped);

        }

        public void restartCallback(Object sender) {//重置

//            Scene s = Scene.node();

//            s.addChild(restartAction());

//            Director.sharedDirector().replaceScene(s);

            emitter.resetSystem();

        }

        public void setEmitterPosition() {//設(shè)置點(diǎn)

        if( CGPoint.equalToPoint( emitter.getCenterOfGravity(), CGPoint.zero() ) ) //如果相等

        emitter.setPosition(CGPoint.make(200, 70));//設(shè)定頂點(diǎn)

        }

        public void nextCallback(Object sender) {//2個(gè)切換事件

            CCScene s = CCScene.node();

            s.addChild(nextAction());

            CCDirector.sharedDirector().replaceScene(s);

        }

        public void backCallback(Object sender) {

            CCScene s = CCScene.node();

            s.addChild(backAction());

            CCDirector.sharedDirector().replaceScene(s);

        }

        public String title() {//得到字符串

        return "No title";

        }

        public String subtitle() {

        return "Tap the screen";

        }

    }

    static class DemoFire extends ParticleDemo {//火

    public void onEnter() {

    super.onEnter();

    emitter = CCParticleFire.node();

    background.addChild(emitter, 10);//添加系統(tǒng)

    emitter.setTexture(CCTextureCache.sharedTextureCache().addImage("fire.png"));

//在緩存中添加圖片火，并把這作為圖案，作為離子的圖案

    CGPoint p = emitter.getPosition();//得到頂點(diǎn)

    emitter.setPosition(CGPoint.ccp(p.x, 100));//設(shè)置頂點(diǎn)讓y=100

    setEmitterPosition();//設(shè)置位置

    }

    public String title() {

    return "ParticleFire";

    }

    }

    static class DemoExplosion extends ParticleDemo {//爆炸

        static final int kTagLabelAtlas = 1;

        static final int kTagEmitter = 2;

        @Override

        public void onEnter() {

            super.onEnter();

            emitter = CCParticleExplosion.node();//新建爆炸節(jié)點(diǎn)

            addChild(emitter, 10);

            emitter.setTexture(CCTextureCache.sharedTextureCache().addImage("stars_grayscale.png"));//設(shè)置圖案

    emitter.setAutoRemoveOnFinish(true);//完成后自動(dòng)消失

            setEmitterPosition();            

        }

        @Override

        public String title() {

            return "ParticleExplosion";

        }

    }

    static class DemoFirework extends ParticleDemo {//×××，也是一種爆炸

        static final int kTagLabelAtlas = 1;

        static final int kTagEmitter = 2;

        @Override

        public void onEnter() {

            super.onEnter();

            emitter = CCParticleFireworks.node();

            background.addChild(emitter, 10);

            emitter.setTexture(CCTextureCache.sharedTextureCache().addImage("stars.png"));//給個(gè)圖片

            emitter.setBlendAdditive(true);//設(shè)置加亮模式

            setEmitterPosition();//設(shè)置點(diǎn)

        }

        @Override

        public String title() {

            return "ParticleFireworks";

        }

    }

    static class DemoSun extends ParticleDemo {//太陽(yáng)效果

    @Override

    public void onEnter() {

    super.onEnter();

    emitter = CCParticleSun.node();//生成一個(gè)太陽(yáng)節(jié)點(diǎn)

    background.addChild(emitter, 10);//添加子類(lèi)

    emitter.setTexture(CCTextureCache.sharedTextureCache().addImage("fire.png"));//設(shè)置圖像

    setEmitterPosition();

    }

    @Override

    public String title()

    {

    return "ParticleSun";

    }

    }

    static class DemoGalaxy extends ParticleDemo {//銀河系

    @Override

    public void onEnter() {

    super.onEnter();

    emitter = CCParticleGalaxy.node();//生成銀河系節(jié)點(diǎn)

    background.addChild(emitter, 10);

    emitter.setTexture(CCTextureCache.sharedTextureCache().addImage("fire.png"));//火圖片

    setEmitterPosition();

    }

    @Override

    public String title() {

    return "ParticleGalaxy";

    }

    }

    static class DemoFlower extends ParticleDemo {//花

    @Override

    public void onEnter() {

    super.onEnter();

    emitter = CCParticleFlower.node();//花的節(jié)點(diǎn)

    background.addChild(emitter, 10);

    emitter.setTexture(CCTextureCache.sharedTextureCache().addImage("stars_grayscale.png"));

//設(shè)置基本粒子圖片

    setEmitterPosition();

    }

    @Override

    public String title() {

    return "ParticleFlower";

    }

    }

    static class DemoBigFlower extends ParticleDemo {//大花

    @Override

    public void onEnter() {

    super.onEnter();

    emitter = new CCQuadParticleSystem(50);//粒子系統(tǒng)50個(gè)粒子

    background.addChild(emitter, 10);

    emitter.setTexture(CCTextureCache.sharedTextureCache().addImage("stars_grayscale.png"));

//設(shè)置圖片

    // duration

    emitter.setDuration(CCParticleSystem.kCCParticleDurationInfinity);//粒子發(fā)射器設(shè)置永遠(yuǎn)

    // Gravity Mode: gravity

    emitter.setGravity(CGPoint.zero());//設(shè)置重力點(diǎn)在0.0

    // Set "Gravity" mode (default one)

    emitter.setEmitterMode(CCParticleSystem.kCCParticleModeGravity);//設(shè)置為重力模式，還有一種叫半徑模式

    // Gravity Mode: speed of particles

    emitter.setSpeed(160);//速度

    emitter.setSpeedVar(20);//加速度

    // Gravity Mode: radial

    emitter.setRadialAccel(-120);//設(shè)置切向速度

    emitter.setRadialAccelVar(0);//切向加速度

    // Gravity Mode: tagential

    emitter.setTangentialAccel(30);//向心速度

    emitter.setTangentialAccelVar(0);//向心加速度

    // angle

    emitter.setAngle(90);//設(shè)置角度

    emitter.setAngleVar(360);//角度加速度

    // emitter position

    emitter.setPosition(CGPoint.ccp(160,240));//設(shè)置初始位置

    emitter.setPosVar(CGPoint.zero());//設(shè)置位置變化率

    // life of particles

    emitter.setLife(4);//存活時(shí)期

    emitter.setLifeVar(1);//時(shí)間變化率

    // spin of particles

    emitter.setStartSpin(0);//開(kāi)始自轉(zhuǎn)

    emitter.setStartSpinVar(0);//開(kāi)始轉(zhuǎn)速度

    emitter.setEndSpin(0);//結(jié)束自轉(zhuǎn)

    emitter.setEndSpinVar(0);//結(jié)束轉(zhuǎn)速度

    // color of particles

    ccColor4F startColor = new ccColor4F(0.5f, 0.5f, 0.5f, 1.0f);

    emitter.setStartColor(startColor);//設(shè)置初始顏色

    ccColor4F startColorVar = new ccColor4F(0.5f, 0.5f, 0.5f, 1.0f);

    emitter.setStartColorVar(startColorVar);//設(shè)置顏色變化率

    ccColor4F endColor = new ccColor4F(0.1f, 0.1f, 0.1f, 0.2f);

    emitter.setEndColor(endColor);//設(shè)置結(jié)束顏色

    ccColor4F endColorVar = new ccColor4F(0.1f, 0.1f, 0.1f, 0.2f);

    emitter.setEndColorVar(endColorVar);//設(shè)置結(jié)束顏色變化率

    // size, in pixels

    emitter.setStartSize(80.0f);//設(shè)置初始離子大小

    emitter.setStartSizeVar(40.0f);//設(shè)置初始離子變化率

    emitter.setEndSize(CCParticleSystem.kCCParticleStartSizeEqualToEndSize);//等同于初始大小

    // emits per second

    emitter.setEmissionRate( emitter.getTotalParticles()/emitter.getLife());//設(shè)置每秒產(chǎn)生離子率

    // additive

    emitter.setBlendAdditive(true);//設(shè)置在屏幕中間

    setEmitterPosition();

    }

    @Override

    public String title() {

    return "Big Particles";

    }

    }

    static class DemoRotFlower extends ParticleDemo {//花

    @Override

    public void onEnter() {

    super.onEnter();

    emitter = new CCQuadParticleSystem(300);//300個(gè)粒子的自定義粒子系統(tǒng)

    background.addChild(emitter, 10);

    emitter.setTexture(CCTextureCache.sharedTextureCache().addImage("stars2_grayscale.png"));

//設(shè)置紋理

    // duration

    emitter.setDuration(CCParticleSystem.kCCParticleDurationInfinity);//永久存活

    // Set "Gravity" mode (default one)

    emitter.setEmitterMode(CCParticleSystem.kCCParticleModeGravity);//重力模式

    // Gravity mode: gravity

    emitter.setGravity(CGPoint.zero());//設(shè)置重力點(diǎn)

    // Gravity mode: speed of particles

    emitter.setSpeed(160);//設(shè)置粒子速度

    emitter.setSpeedVar(20);//設(shè)置加速度

    // Gravity mode: radial

    emitter.setRadialAccel(-120);//徑向速度

    emitter.setRadialAccelVar(0);//徑向加速度

    // Gravity mode: tagential

    emitter.setTangentialAccel(30);//切向速度

    emitter.setTangentialAccelVar(0);//切向加速度

    // emitter position

    emitter.setPosition(CGPoint.ccp(160,240));//出發(fā)點(diǎn)

    emitter.setPosVar(CGPoint.zero());//點(diǎn)變化速度

    // angle

    emitter.setAngle(90);//角度

    emitter.setAngleVar(360);//角加速度

    // life of particles

    emitter.setLife(3);//生命周期

    emitter.setLifeVar(1);//衰變速度

    // spin of particles

    emitter.setStartSpin(0);//粒子自己開(kāi)始角度

    emitter.setStartSpinVar(0);//粒子自己旋轉(zhuǎn)的速度，0就是一開(kāi)始速度為0

    emitter.setEndSpin(0);//粒子自己結(jié)束時(shí)的角度

    emitter.setEndSpinVar(2000);//單個(gè)粒子自己旋轉(zhuǎn)的速度，2000就轉(zhuǎn)的非?？炝?/p>

    // color of particles

    ccColor4F startColor = new ccColor4F(0.5f, 0.5f, 0.5f, 1.0f);//開(kāi)始的顏色

    emitter.setStartColor(startColor);//設(shè)置開(kāi)始的顏色

    ccColor4F startColorVar = new ccColor4F(0.5f, 0.5f, 0.5f, 1.0f);//開(kāi)始顏色變化速度

    emitter.setStartColorVar(startColorVar);

    ccColor4F endColor = new ccColor4F(0.1f, 0.1f, 0.1f, 0.2f);//結(jié)束顏色

    emitter.setEndColor(endColor);

    ccColor4F endColorVar = new ccColor4F(0.1f, 0.1f, 0.1f, 0.2f);//結(jié)束時(shí)的速度

    emitter.setEndColorVar(endColorVar);

    // size, in pixels

    emitter.setStartSize(30.0f);//開(kāi)始大小

    emitter.setStartSizeVar(00.0f);//開(kāi)始速度

    emitter.setEndSize(CCParticleSystem.kCCParticleStartSizeEqualToEndSize);//結(jié)束大小設(shè)置的和一開(kāi)始一樣

    // emits per second

    emitter.setEmissionRate(emitter.getTotalParticles()/emitter.getLife());//每秒產(chǎn)生粒子的效率，得到全部產(chǎn)生的粒子/生命周期=粒子的產(chǎn)生效率

    // additive

    emitter.setBlendAdditive(false);//設(shè)置在屏幕中間

    setEmitterPosition();

    }

    @Override

    public String title() {

    return "Spinning Particles";

    }

    }

    static class DemoMeteor extends ParticleDemo {

    @Override

    public void onEnter() {

    super.onEnter();

    emitter = CCParticleMeteor.node();//粒子流星

    background.addChild(emitter, 10);//背景添加粒子流星

    emitter.setTexture(CCTextureCache.sharedTextureCache().addImage("fire.png"));

//給粒子添加圖案

    setEmitterPosition();

    }

    @Override

    public String title() {

    return "ParticleMeteor";

    }

    }

    static class DemoSpiral extends ParticleDemo {

    @Override

    public void onEnter() {

    super.onEnter();

    emitter = CCParticleSpiral.node();//顆粒螺旋

    background.addChild(emitter, 10);//添加螺旋

    emitter.setTexture(CCTextureCache.sharedTextureCache().addImage("fire.png"));

//設(shè)置畫(huà)面

    setEmitterPosition();

    }

    @Override

    public String title() {

    return "ParticleSpiral";

    }

    }

    static class DemoSmoke extends ParticleDemo {

    @Override

    public void onEnter() {

    super.onEnter();

    emitter = CCParticleSmoke.node();//粒子煙霧

    background.addChild(emitter, 10);

    CGPoint p = emitter.getPosition();

    emitter.setPosition(CGPoint.ccp( p.x, 100));//設(shè)置位置

    setEmitterPosition();

    }

    @Override

    public String title() {

    return "ParticleSmoke";

    }

    }

    static class DemoSnow extends ParticleDemo {

    @Override

    public void onEnter() {

    super.onEnter();

    emitter = CCParticleSnow.node();//粒子下雪

    background.addChild(emitter, 10);

    CGPoint p = emitter.getPosition();

    emitter.setPosition(CGPoint.ccp( p.x, p.y-110));

    emitter.setLife(3);//生命周期3

    emitter.setLifeVar(1);//生命速度1

    // gravity

    emitter.setGravity(CGPoint.ccp(0,-10));

    // speed of particles

    emitter.setSpeed(130);//設(shè)置速度

    emitter.setSpeedVar(30);//加速度

    ccColor4F startColor = emitter.getStartColor();//得到開(kāi)始顏色

    startColor.r = 0.9f;

    startColor.g = 0.9f;

    startColor.b = 0.9f;

    emitter.setStartColor(startColor);//設(shè)置開(kāi)始顏色，主要為了改透明度

    ccColor4F startColorVar = emitter.getStartColorVar();//開(kāi)始變換速度

    startColorVar.b = 0.1f;

    emitter.setStartColorVar(startColorVar);//只改變藍(lán)色的變化速度

    emitter.setEmissionRate(emitter.getTotalParticles()/emitter.getLife());//粒子產(chǎn)生速度

    emitter.setTexture(CCTextureCache.sharedTextureCache().addImage("snow.png"));

//設(shè)置紋理

    setEmitterPosition();

    }

    @Override

    public String title() {

    return "ParticleSnow";

    }

    }

    static class DemoRain extends ParticleDemo {//下雨

    @Override

    public void onEnter(){

    super.onEnter();

    emitter = CCParticleRain.node();//下雨粒子效果

    background.addChild(emitter, 10);

    CGPoint p = emitter.getPosition();//設(shè)置位置

    emitter.setPosition(CGPoint.ccp( p.x, p.y-100));

    emitter.setLife(4);//設(shè)置生命周期

    emitter.setTexture(CCTextureCache.sharedTextureCache().addImage("fire.png"));

//設(shè)置紋理

    setEmitterPosition();//設(shè)置位置

    }

    @Override

    public String title() {

    return "ParticleRain";

    }

    }

    static class DemoModernArt extends ParticleDemo {

    @Override

    public void onEnter()

    {

    super.onEnter();

    emitter = new CCPointParticleSystem(1000);//粒子效果1000個(gè)

    background.addChild(emitter, 10);//添加子類(lèi)

    CGSize s = CCDirector.sharedDirector().winSize();//得到大小

    // duration

    emitter.setDuration(CCParticleSystem.kCCParticleDurationInfinity);//生命周期永久

    // Gravity mode

    emitter.setEmitterMode(CCParticleSystem.kCCParticleModeGravity);//重力模式

    // Gravity mode: gravity

    emitter.setGravity(CGPoint.ccp(0,0));//重心

    // Gravity mode: radial

    emitter.setRadialAccel(70);//以下幾個(gè)方法不做贅述

    emitter.setRadialAccelVar(10);

    // Gravity mode: tagential

    emitter.setTangentialAccel(80);

    emitter.setTangentialAccelVar(0);

    // Gravity mode: speed of particles

    emitter.setSpeed(50);

    emitter.setSpeedVar(10);

    // angle

    emitter.setAngle(0);

    emitter.setAngleVar(360);

    // emitter position

    emitter.setPosition(CGPoint.ccp( s.width/2, s.height/2));

    emitter.setPosVar(CGPoint.zero());

    // life of particles

    emitter.setLife(2.0f);

    emitter.setLifeVar(0.3f);

    // emits per frame

    emitter.setEmissionRate(emitter.getTotalParticles()/emitter.getLife());

    // color of particles

    ccColor4F startColor = new ccColor4F(0.5f, 0.5f, 0.5f, 1.0f);

    emitter.setStartColor(startColor);

    ccColor4F startColorVar = new ccColor4F(0.5f, 0.5f, 0.5f, 1.0f);

    emitter.setStartColorVar(startColorVar);

    ccColor4F endColor = new ccColor4F(0.1f, 0.1f, 0.1f, 0.2f);

    emitter.setEndColor(endColor);

    ccColor4F endColorVar = new ccColor4F(0.1f, 0.1f, 0.1f, 0.2f);

    emitter.setEndColorVar(endColorVar);

    // size, in pixels

    emitter.setStartSize(1.0f);

    emitter.setStartSizeVar(1.0f);

    emitter.setEndSize(32.0f);

    emitter.setEndSizeVar(8.0f);

    // texture

    //    emitter.texture = [[TextureCache sharedTextureCache] addImage:@"fire-grayscale.png"];

    // additive

    emitter.setBlendAdditive(false);//不在中心

    setEmitterPosition();

    }

    @Override

    public String title()

    {

    return "Varying size";

    }

    }

    static class DemoRing extends ParticleDemo {

    @Override

    public void onEnter() {

    super.onEnter();

    emitter = CCParticleFlower.node(500);

    background.addChild(emitter, 10);

    emitter.setTexture(CCTextureCache.sharedTextureCache().addImage("stars_grayscale.png"));//設(shè)置紋理

    emitter.setLifeVar(0);

    emitter.setLife(10);

    emitter.setSpeed(100);

    emitter.setSpeedVar(0);

    emitter.setEmissionRate(10000);//設(shè)置發(fā)射率

    setEmitterPosition();

    }

    @Override

    public String title() {

    return "Ring Demo";

    }

    }

    static class ParallaxParticle extends ParticleDemo {//視差粒子

    @Override

    public void onEnter() {

    super.onEnter();

    background.getParent().removeChild(background, true);//移除背景

    background = null;

    CCParallaxNode p = CCParallaxNode.node();//一個(gè)基礎(chǔ)的視差場(chǎng)景

    addChild(p, 5);

    CCSprite p1 = CCSprite.sprite("background3.png");//得到背景精靈1

    background = p1;

    CCSprite p2 = CCSprite.sprite("background3.png");//背景精靈2

    p.addChild(p1, 1, 0.5f, 1f, 0f, 250f);//把背景精靈添加進(jìn)來(lái)

    p.addChild(p2, 2, 1.5f, 1f, 0f, 50f);//添加背景精靈

    emitter = CCParticleFlower.node(500);//粒子花

    p1.addChild(emitter, 10);//把粒子花添加進(jìn)來(lái)

    emitter.setPosition(CGPoint.ccp(250,200));

    CCParticleSystem par = CCParticleSun.node(250);//太陽(yáng)

    p2.addChild(par, 10);//添加精靈

    par = null;//添加完把原字段置空，因?yàn)槟莻€(gè)引用還在p2子類(lèi)里

    CCMoveBy move = CCMoveBy.action(4, CGPoint.ccp(300,0));//移動(dòng)

    CCMoveBy move_back = move.reverse();//返回

    CCSequence seq = CCSequence.actions(move, move_back);//移動(dòng)和返回

    p.runAction(CCRepeatForever.action(seq));//永久動(dòng)作

    }

    @Override

    public String title() {

    return "Parallax + Particles";

    }

    }

    static class ParticleDesigner1 extends ParticleDemo {//粒子設(shè)計(jì)

    @Override

    public void onEnter() {

    super.onEnter();

    setColor(ccColor3B.ccBLACK);

    removeChild(background, true);//移除場(chǎng)景

    background = null;

    emitter = CCQuadParticleSystem.particleWithFile("Particles/SpookyPeas.plist");//文件粒子

    addChild(emitter, 10);//添加粒子層

    }

    @Override

    public String title() {

    return "PD: Spooky Peas";

    }

    }

    static class ParticleDesigner2 extends ParticleDemo {//設(shè)計(jì)2

    @Override

    public void onEnter() {

    super.onEnter();

    setColor(ccColor3B.ccBLACK);//設(shè)置背景顏色

    removeChild(background, true);//移除背景精靈（和上面顏色無(wú)關(guān)）

    background = null;//置空，等待回收

    emitter = CCQuadParticleSystem.particleWithFile("Particles/SpinningPeas.plist");//從文件得到離子

    addChild(emitter, 10);//添加子類(lèi)效果

    // custom spinning

    emitter.setStartSpin(0);//同上屬性解釋

    emitter.setStartSpin(360);

    emitter.setEndSpin(720);

    emitter.setEndSpinVar(360);

    }

    @Override

    public String title() {

    return "PD: Spinning Peas";

    }

    }

    static class ParticleDesigner3 extends ParticleDemo {//設(shè)計(jì)3

    @Override

    public void onEnter() {

    super.onEnter();

    setColor(ccColor3B.ccBLACK);

    removeChild(background, true);

    background = null;

    emitter = CCQuadParticleSystem.particleWithFile("Particles/LavaFlow.plist");//只有文件加載的粒子

    addChild(emitter, 10);//添加子類(lèi)

    }

    @Override

    public String title() {

    return "PD: Lava Flow";

    }

    }

    static class ParticleDesigner4 extends ParticleDemo {//設(shè)計(jì)4

    @Override

    public void onEnter()

    {

    super.onEnter();

    setColor(ccColor3B.ccBLACK);

    emitter = CCQuadParticleSystem.particleWithFile("Particles/ExplodingRing.plist");//從文件讀取粒子

    addChild(emitter, 10);

    removeChild(background, true);//比剛才多移除了背景動(dòng)作

    background = null;

    }

    @Override

    public String title()

    {

    return "PD: Exploding Ring";

    }

    }

    static class ParticleDesigner5 extends ParticleDemo {//設(shè)計(jì)5

    @Override

    public void onEnter()

    {

    super.onEnter();

    setColor(ccColor3B.ccBLACK);//有黑背景

    removeChild(background, true);

    background = null;//移除背景圖層精靈

    emitter = CCQuadParticleSystem.particleWithFile("Particles/Comet.plist");//加載文件

    addChild(emitter, 10);

    }

    @Override

    public String title()

    {

    return "PD: Comet";

    }

    }

    static class ParticleDesigner6 extends ParticleDemo {//6

    @Override

    public void onEnter()

    {

    super.onEnter();

    setColor(ccColor3B.ccBLACK);//同上

    removeChild(background, true);

    background = null;

    emitter = CCQuadParticleSystem.particleWithFile("Particles/BurstPipe.plist");

    addChild(emitter, 10);

    }

    @Override

    public String title()

    {

    return "PD: Burst Pipe";

    }

    }

    static class ParticleDesigner7 extends ParticleDemo {//7

    @Override

    public void onEnter()

    {

    super.onEnter();

    setColor(ccColor3B.ccBLACK);//黑背景

    removeChild(background, true);

    background = null;

    emitter = CCQuadParticleSystem.particleWithFile("Particles/BoilingFoam.plist");//文件

    addChild(emitter, 10);

    }

    @Override

    public String title()

    {

    return "PD: Boiling Foam";

    }

    }

    static class ParticleDesigner8 extends ParticleDemo {//8，解釋同理

    @Override

    public void onEnter()

    {

    super.onEnter();

    setColor(ccColor3B.ccBLACK);

    removeChild(background, true);

    background = null;

    emitter = CCQuadParticleSystem.particleWithFile("Particles/Flower.plist");

    addChild(emitter, 10);

    }

    @Override

    public String title() {

    return "PD: Flower";

    }

    }

    static class ParticleDesigner9 extends ParticleDemo {//9，解釋同理

    @Override

    public void onEnter()

    {

    super.onEnter();

    setColor(ccColor3B.ccBLACK);

    removeChild(background, true);

    background = null;

    emitter = CCQuadParticleSystem.particleWithFile("Particles/Spiral.plist");

    addChild(emitter, 10);

    }

    @Override

    public String title()

    {

    return "PD: Blur Spiral";

    }

    }

    static class ParticleDesigner10 extends ParticleDemo {//10，解釋同理

    @Override

    public void onEnter()

    {

    super.onEnter();

    setColor(ccColor3B.ccBLACK);

    removeChild(background, true);

    background = null;

    emitter = CCQuadParticleSystem.particleWithFile("Particles/Galaxy.plist");

    addChild(emitter, 10);

    }

    @Override

    public String title() {

    return "PD: Galaxy";

    }

    @Override

    public String subtitle() {

    return "Testing radial & tangential accel";

    }

    }

    static class ParticleDesigner11 extends ParticleDemo {//11，解釋同理

    @Override

    public void onEnter() {

    super.onEnter();

    setColor(ccColor3B.ccBLACK);

    removeChild(background, true);

    background = null;

    emitter = CCQuadParticleSystem.particleWithFile("Particles/debian.plist");

    addChild(emitter, 10);

    }

    @Override

    public String title() {

    return "PD: Debian";

    }

    @Override

    public String subtitle() {

    return "Testing radial & tangential accel";

    }

    }

    static class RadiusMode1 extends ParticleDemo {//12

    @Override

    public void onEnter() {

    super.onEnter();

    setColor(ccColor3B.ccBLACK);//添加背景顏色

    removeChild(background, true);//移除背景圖層

    background = null;

    emitter = new CCQuadParticleSystem(200);//200個(gè)粒子的粒子系統(tǒng)

    addChild(emitter, 10);

    emitter.setTexture(CCTextureCache.sharedTextureCache().addImage("stars_grayscale.png"));

//添加圖案

    // duration

    emitter.setDuration(CCParticleSystem.kCCParticleDurationInfinity);

//永久存活

    // radius mode

    emitter.setEmitterMode(CCParticleSystem.kCCParticleModeRadius);

//半徑模式

    // radius mode: start and end radius in pixels

    emitter.setStartRadius(0);//開(kāi)始半徑

    emitter.setStartRadiusVar(0);//開(kāi)始半徑變換速度

    emitter.setEndRadius(160);//結(jié)束半徑

    emitter.setEndRadiusVar(0);//結(jié)束半徑變換速度

    // radius mode: degrees per second

    emitter.setRotatePerSecond(180);//旋轉(zhuǎn)180度

    emitter.setRotatePerSecondVar(0);旋轉(zhuǎn)加速度

    // angle

    emitter.setAngle(90);//設(shè)置角度

    emitter.setAngleVar(0);//設(shè)置角加速度

    // emitter position

    CGSize size = CCDirector.sharedDirector().winSize();//設(shè)置大小

    emitter.setPosition(CGPoint.ccp( size.width/2, size.height/2));//設(shè)置位置

    emitter.setPosVar(CGPoint.zero());//點(diǎn)變化速度

    // life of particles

    emitter.setLife(5);//設(shè)置生命周期

    emitter.setLifeVar(0);

    // spin of particles

    emitter.setStartSpin(0);//設(shè)置開(kāi)始角速度

    emitter.setStartSpinVar(0);//加速度

    emitter.setEndSpin(0);//結(jié)束角速度

    emitter.setEndSpinVar(0);//結(jié)束角加速度

    // color of particles

    ccColor4F startColor = new ccColor4F(0.5f, 0.5f, 0.5f, 1.0f);//開(kāi)始顏色

    emitter.setStartColor(startColor);

    ccColor4F startColorVar = new ccColor4F(0.5f, 0.5f, 0.5f, 1.0f);//開(kāi)始顏色變化速度

    emitter.setStartColorVar(startColorVar);

    ccColor4F endColor = new ccColor4F(0.1f, 0.1f, 0.1f, 0.2f);//結(jié)束速度

    emitter.setEndColor(endColor);

    ccColor4F endColorVar = new ccColor4F(0.1f, 0.1f, 0.1f, 0.2f);//結(jié)束加速度

    emitter.setEndColorVar(endColorVar);

    // size, in pixels

    emitter.setStartSize(32);//開(kāi)始大小

    emitter.setStartSizeVar(0);//開(kāi)始變換速度

    emitter.setEndSize(CCParticleSystem.kCCParticleStartSizeEqualToEndSize);//結(jié)束大小

    // emits per second

    emitter.setEmissionRate(emitter.getTotalParticles()/emitter.getLife());//出現(xiàn)的頻率

    // additive

    emitter.setBlendAdditive(false);//不在中心

    }

    @Override

    public String title() {

    return "Radius Mode: Spiral";

    }

    }

    static class RadiusMode2 extends ParticleDemo {//2

    @Override

    public void onEnter() {

    super.onEnter();

    setColor(ccColor3B.ccBLACK);//黑色背景

    removeChild(background, true);//移除背景圖層

    background = null;

    emitter = new CCQuadParticleSystem(200);//創(chuàng)建一個(gè)200個(gè)精靈的圖層

    addChild(emitter, 10);//添加為子類(lèi)

    emitter.setTexture(CCTextureCache.sharedTextureCache().addImage("stars_grayscale.png"));

//設(shè)置紋理

    // duration

    emitter.setDuration(CCParticleSystem.kCCParticleDurationInfinity);

//永久存在的效果

    // radius mode

    emitter.setEmitterMode(CCParticleSystem.kCCParticleModeRadius);

//半徑模式

    // radius mode: 100 pixels from center

    emitter.setStartRadius(100);//開(kāi)始半徑

    emitter.setStartRadiusVar(0);//開(kāi)始半徑加速度

    emitter.setEndRadius(CCParticleSystem.kCCParticleStartRadiusEqualToEndRadius);//結(jié)束和開(kāi)始的半徑相等，其參數(shù)值為-1

    emitter.setEndRadiusVar(0);// not used when start == end//結(jié)束的加速度還是0

    // radius mode: degrees per second

    // 45 * 4 seconds of life = 180 degrees

    emitter.setRotatePerSecond(45);//每秒45度

    emitter.setRotatePerSecondVar(0);//加速度

    // angle

    emitter.setAngle(90);//設(shè)置角度90

    emitter.setAngleVar(0);//設(shè)置角加速度0

    // emitter position

    CGSize size = CCDirector.sharedDirector().winSize();//設(shè)置大小

    emitter.setPosition(CGPoint.ccp( size.width/2, size.height/2));

    emitter.setPosVar(CGPoint.zero());

    // life of particles

    emitter.setLife(4);//設(shè)置生命周期

    emitter.setLifeVar(0);//設(shè)置生命加速度

    // spin of particles

    emitter.setStartSpin(0);//開(kāi)始角度

    emitter.setStartSpinVar(0);//開(kāi)始角加速度

    emitter.setEndSpin(0);//結(jié)束角度

    emitter.setEndSpinVar(0);//結(jié)束角加速度

    // color of particles

    ccColor4F startColor = new ccColor4F(0.5f, 0.5f, 0.5f, 1.0f);//顏色

    emitter.setStartColor(startColor);//設(shè)置開(kāi)始顏色

    ccColor4F startColorVar = new ccColor4F(0.5f, 0.5f, 0.5f, 1.0f);//開(kāi)始顏色加速度

    emitter.setStartColorVar(startColorVar);

    ccColor4F endColor = new ccColor4F(0.1f, 0.1f, 0.1f, 0.2f);//結(jié)束顏色

    emitter.setEndColor(endColor);

    ccColor4F endColorVar = new ccColor4F(0.1f, 0.1f, 0.1f, 0.2f);/結(jié)束顏色加速度

    emitter.setEndColorVar(endColorVar);

    // size, in pixels

    emitter.setStartSize(32);//設(shè)置開(kāi)始大小

    emitter.setStartSizeVar(0);//設(shè)置大小加速度

    emitter.setEndSize(CCParticleSystem.kCCParticleStartSizeEqualToEndSize);//設(shè)置結(jié)束加速度和開(kāi)始加速度一樣

    // emits per second

    emitter.setEmissionRate(emitter.getTotalParticles()/emitter.getLife());//設(shè)置迸射粒子速度

    // additive

    emitter.setBlendAdditive(false);//中心

    }

    @Override

    public String title()

    {

    return "Radius Mode: Semi Circle";

    }

    }

    static class Issue704 extends ParticleDemo {//

    @Override

    public void onEnter()

    {

    super.onEnter();

    setColor(ccColor3B.ccBLACK);//黑色

    removeChild(background, true);//移除背景

    background = null;

    emitter = new CCQuadParticleSystem(100);//生成一個(gè)有100個(gè)粒子的粒子系統(tǒng)

    addChild(emitter, 10);

    emitter.setDuration(CCParticleSystem.kCCParticleDurationInfinity);//永久生存

    // radius mode

    emitter.setEmitterMode(CCParticleSystem.kCCParticleModeRadius);//半徑模式

    // radius mode: 50 pixels from center

    emitter.setStartRadius(50);//開(kāi)始半徑50

    emitter.setStartRadiusVar(0);//開(kāi)始半徑加速度0

    emitter.setEndRadius(CCParticleSystem.kCCParticleStartRadiusEqualToEndRadius);//與開(kāi)始相等

    emitter.setEndRadiusVar(0);// not used when start == end//也相等

    // radius mode: degrees per second

    // 45 * 4 seconds of life = 180 degrees

    emitter.setRotatePerSecond(0);//設(shè)置每秒轉(zhuǎn)角度0

    emitter.setRotatePerSecondVar(0);//每秒轉(zhuǎn)加速度0

    // angle

    emitter.setAngle(90);//設(shè)置角度90

    emitter.setAngleVar(0);//設(shè)置角加速度0

    // emitter position

    CGSize size = CCDirector.sharedDirector().winSize();//得到屏幕大小

    emitter.setPosition(CGPoint.ccp(size.width/2, size.height/2));//位于屏幕中間

    emitter.setPosVar(CGPoint.zero());//設(shè)置點(diǎn)變化速度

    // life of particles

    emitter.setLife (5);//生命周期

    emitter.setLifeVar(0);//生命周期速度

    // spin of particles

    emitter.setStartSpin (0);//開(kāi)始角度

    emitter.setStartSpinVar (0);//開(kāi)始角加速度

    emitter.setEndSpin( 0);//結(jié)束角度

    emitter.setEndSpinVar (0);//結(jié)束角加速度

    // color of particles

    ccColor4F startColor = new ccColor4F(0.5f, 0.5f, 0.5f, 1.0f);//開(kāi)始顏色

    emitter.setStartColor(startColor);

    ccColor4F startColorVar = new ccColor4F(0.5f, 0.5f, 0.5f, 1.0f);//開(kāi)始顏色加速度

    emitter.setStartColorVar(startColorVar);

    ccColor4F endColor = new ccColor4F(0.1f, 0.1f, 0.1f, 0.2f);//結(jié)束顏色

    emitter.setEndColor(endColor);

    ccColor4F endColorVar = new ccColor4F(0.1f, 0.1f, 0.1f, 0.2f);//結(jié)束顏色加速度

    emitter.setEndColorVar(endColorVar);

    // size, in pixels

    emitter.setStartSize(16);//設(shè)置開(kāi)始大小

    emitter.setStartSizeVar(0);//開(kāi)始大小變化率

    emitter.setEndSize(CCParticleSystem.kCCParticleStartSizeEqualToEndSize);//結(jié)束大小和開(kāi)始大小一樣

    // emits per second

    emitter.setEmissionRate( emitter.getTotalParticles()/emitter.getLife());//每秒的迸發(fā)速度

    // additive

    emitter.setBlendAdditive(false);//不在中心

    CCIntervalAction rot = CCRotateBy.action(16, 360);//一個(gè)相對(duì)旋轉(zhuǎn)動(dòng)作，轉(zhuǎn)換為瞬間動(dòng)作

    emitter.runAction(CCRepeatForever.action(rot));//讓粒子執(zhí)行

    }

    @Override

    public String title() {

    return "Issue 704. Free + Rot";

    }

    @Override

    public String subtitle() {

    return "Emitted particles should not rotate";

    }

    }

    static class Issue872 extends ParticleDemo {//872

    @Override

    public void onEnter()

    {

    super.onEnter();

    setColor(ccColor3B.ccBLACK);

    removeChild(background, true);//移除背景

    background = null;

    emitter = CCQuadParticleSystem.particleWithFile("Particles/Upsidedown.plist");//得到粒子效果從一個(gè)文件

    addChild(emitter, 10);

    }

    @Override

    public String title() {

    return "Issue 872. UpsideDown";

    }

    @Override

    public String subtitle()

    {

    return "Particles should NOT be Upside Down. M should appear, not W.";

    }

    }

    static class Issue870 extends ParticleDemo {//870

    int index;

    @Override

    public void onEnter()

    {

    super.onEnter();

    setColor(ccColor3B.ccBLACK);

    removeChild(background, true);//同理

    background = null;

    CCQuadParticleSystem system = (CCQuadParticleSystem) CCQuadParticleSystem.particleWithFile("Particles/SpinningPeas.plist");//得到一個(gè)粒子效果從文件強(qiáng)制轉(zhuǎn)換為粒子系統(tǒng)

    system.setTexture(CCTextureCache.sharedTextureCache().addImage("particles.png"), CGRect.make(0,0,32,32));//添加紋理

    addChild(system, 10);//同理

    emitter = system;

    index = 0;

    schedule("updateQuads", 2);//更新

    }

    public void updateQuads(float dt) {//被更新的那個(gè)方法

    index = (index + 1) % 4;//0-3循環(huán)

    CGRect rect = CGRect.make(index*32, 0,32,32);//制作一個(gè)區(qū)域

    CCQuadParticleSystem system = (CCQuadParticleSystem) emitter;

    system.setTexture(emitter.getTexture(), rect);//生成一個(gè)粒子系統(tǒng)

    }

    @Override

    public String title()

    {

    return "Issue 870. SubRect";

    }

    @Override

    public String subtitle()

    {

    return "Every 2 seconds the particle should change";

    }

    }

}