Java Code Examples for com.jme3.effect.ParticleEmitter#setMaterial()

private void prepareEffect() {
        int COUNT_FACTOR = 1;
        float COUNT_FACTOR_F = 1f;
        effect = new ParticleEmitter("Flame", Type.Triangle, 32 * COUNT_FACTOR);
        effect.setSelectRandomImage(true);
        effect.setStartColor(new ColorRGBA(1f, 0.4f, 0.05f, (float) (1f / COUNT_FACTOR_F)));
        effect.setEndColor(new ColorRGBA(.4f, .22f, .12f, 0f));
        effect.setStartSize(1.3f);
        effect.setEndSize(2f);
        effect.setShape(new EmitterSphereShape(Vector3f.ZERO, 1f));
        effect.setParticlesPerSec(0);
        effect.setGravity(0, -5, 0);
        effect.setLowLife(.4f);
        effect.setHighLife(.5f);
        effect.setInitialVelocity(new Vector3f(0, 7, 0));
        effect.setVelocityVariation(1f);
        effect.setImagesX(2);
        effect.setImagesY(2);
        Material mat = new Material(assetManager, "Common/MatDefs/Misc/Particle.j3md");
        mat.setTexture("Texture", assetManager.loadTexture("Effects/Explosion/flame.png"));
        effect.setMaterial(mat);
//        effect.setLocalScale(100);
        rootNode.attachChild(effect);
    }
 

private void prepareEffect() {
        int COUNT_FACTOR = 1;
        float COUNT_FACTOR_F = 1f;
        effect = new ParticleEmitter("Flame", Type.Triangle, 32 * COUNT_FACTOR);
        effect.setSelectRandomImage(true);
        effect.setStartColor(new ColorRGBA(1f, 0.4f, 0.05f, (1f / COUNT_FACTOR_F)));
        effect.setEndColor(new ColorRGBA(.4f, .22f, .12f, 0f));
        effect.setStartSize(1.3f);
        effect.setEndSize(2f);
        effect.setShape(new EmitterSphereShape(Vector3f.ZERO, 1f));
        effect.setParticlesPerSec(0);
        effect.setGravity(0, -5, 0);
        effect.setLowLife(.4f);
        effect.setHighLife(.5f);
        effect.getParticleInfluencer()
                .setInitialVelocity(new Vector3f(0, 7, 0));
        effect.getParticleInfluencer().setVelocityVariation(1f);
        effect.setImagesX(2);
        effect.setImagesY(2);
        Material mat = new Material(assetManager, "Common/MatDefs/Misc/Particle.j3md");
        mat.setTexture("Texture", assetManager.loadTexture("Effects/Explosion/flame.png"));
        effect.setMaterial(mat);
//        effect.setLocalScale(100);
        rootNode.attachChild(effect);
    }
 

private void createFire() {
    /**
     * Uses Texture from jme3-test-data library!
     */
    ParticleEmitter fire = new ParticleEmitter("Emitter", ParticleMesh.Type.Triangle, 30);
    Material mat_red = new Material(assetManager, "Common/MatDefs/Misc/Particle.j3md");
    mat_red.setTexture("Texture", assetManager.loadTexture("Effects/Explosion/flame.png"));

    fire.setMaterial(mat_red);
    fire.setImagesX(2);
    fire.setImagesY(2); // 2x2 texture animation
    fire.setEndColor(new ColorRGBA(1f, 0f, 0f, 1f));   // red
    fire.setStartColor(new ColorRGBA(1f, 1f, 0f, 0.5f)); // yellow
    fire.getParticleInfluencer().setInitialVelocity(new Vector3f(0, 2, 0));
    fire.setStartSize(10f);
    fire.setEndSize(1f);
    fire.setGravity(0, 0, 0);
    fire.setLowLife(0.5f);
    fire.setHighLife(1.5f);
    fire.getParticleInfluencer().setVelocityVariation(0.3f);
    fire.setLocalTranslation(-600, 50, 300);

    fire.setQueueBucket(Bucket.Translucent);
    rootNode.attachChild(fire);
}
 

private void createFlame(){
    flame = new ParticleEmitter("Flame", EMITTER_TYPE, 32 * COUNT_FACTOR);
    flame.setSelectRandomImage(true);
    flame.setStartColor(new ColorRGBA(1f, 0.4f, 0.05f, (float) (1f / COUNT_FACTOR_F)));
    flame.setEndColor(new ColorRGBA(.4f, .22f, .12f, 0f));
    flame.setStartSize(1.3f);
    flame.setEndSize(2f);
    flame.setShape(new EmitterSphereShape(Vector3f.ZERO, 1f));
    flame.setParticlesPerSec(0);
    flame.setGravity(0, -5, 0);
    flame.setLowLife(.4f);
    flame.setHighLife(.5f);
    flame.getParticleInfluencer().setInitialVelocity(new Vector3f(0, 7, 0));
    flame.getParticleInfluencer().setVelocityVariation(1f);
    flame.setImagesX(2);
    flame.setImagesY(2);
    Material mat = new Material(assetManager, "Common/MatDefs/Misc/Particle.j3md");
    mat.setTexture("Texture", assetManager.loadTexture("Effects/Explosion/flame.png"));
    mat.setBoolean("PointSprite", POINT_SPRITE);
    flame.setMaterial(mat);
    explosionEffect.attachChild(flame);
}
 

private void prepareEffect(AssetManager assetManager) {
    int COUNT_FACTOR = 1;
    float COUNT_FACTOR_F = 1f;
    effect = new ParticleEmitter("Flame", Type.Triangle, 32 * COUNT_FACTOR);
    effect.setSelectRandomImage(true);
    effect.setStartColor(new ColorRGBA(1f, 0.4f, 0.05f, (float) (1f / COUNT_FACTOR_F)));
    effect.setEndColor(new ColorRGBA(.4f, .22f, .12f, 0f));
    effect.setStartSize(1.3f);
    effect.setEndSize(2f);
    effect.setShape(new EmitterSphereShape(Vector3f.ZERO, 1f));
    effect.setParticlesPerSec(0);
    effect.setGravity(0, -5f, 0);
    effect.setLowLife(.4f);
    effect.setHighLife(.5f);
    effect.setInitialVelocity(new Vector3f(0, 7, 0));
    effect.setVelocityVariation(1f);
    effect.setImagesX(2);
    effect.setImagesY(2);
    Material mat = new Material(assetManager, "Common/MatDefs/Misc/Particle.j3md");
    mat.setTexture("Texture", assetManager.loadTexture("Effects/Explosion/flame.png"));
    effect.setMaterial(mat);
}
 

@Override
public void simpleInitApp() {
    emit = new ParticleEmitter("Emitter", Type.Triangle, 300);
    emit.setGravity(0, 0, 0);
    emit.setVelocityVariation(1);
    emit.setLowLife(1);
    emit.setHighLife(1);
    emit.setInitialVelocity(new Vector3f(0, .5f, 0));
    emit.setImagesX(15);
    Material mat = new Material(assetManager, "Common/MatDefs/Misc/Particle.j3md");
    mat.setTexture("Texture", assetManager.loadTexture("Effects/Smoke/Smoke.png"));
    emit.setMaterial(mat);
    
    rootNode.attachChild(emit);
    
    inputManager.addListener(new ActionListener() {
        
        public void onAction(String name, boolean isPressed, float tpf) {
            if ("setNum".equals(name) && isPressed) {
                emit.setNumParticles(1000);
            }
        }
    }, "setNum");
    
    inputManager.addMapping("setNum", new KeyTrigger(KeyInput.KEY_SPACE));
}
 

private void createFlame(){
    flame = new ParticleEmitter("Flame", EMITTER_TYPE, 32 * COUNT_FACTOR);
    flame.setSelectRandomImage(true);
    flame.setStartColor(new ColorRGBA(1f, 0.4f, 0.05f, (1f / COUNT_FACTOR_F)));
    flame.setEndColor(new ColorRGBA(.4f, .22f, .12f, 0f));
    flame.setStartSize(1.3f);
    flame.setEndSize(2f);
    flame.setShape(new EmitterSphereShape(Vector3f.ZERO, 1f));
    flame.setParticlesPerSec(0);
    flame.setGravity(0, -5, 0);
    flame.setLowLife(.4f);
    flame.setHighLife(.5f);
    flame.getParticleInfluencer().setInitialVelocity(new Vector3f(0, 7, 0));
    flame.getParticleInfluencer().setVelocityVariation(1f);
    flame.setImagesX(2);
    flame.setImagesY(2);
    Material mat = new Material(assetManager, "Common/MatDefs/Misc/Particle.j3md");
    mat.setTexture("Texture", assetManager.loadTexture("Effects/Explosion/flame.png"));
    mat.setBoolean("PointSprite", POINT_SPRITE);
    flame.setMaterial(mat);
    explosionEffect.attachChild(flame);
}
 

private void createFlash(){
    flash = new ParticleEmitter("Flash", EMITTER_TYPE, 24 * COUNT_FACTOR);
    flash.setSelectRandomImage(true);
    flash.setStartColor(new ColorRGBA(1f, 0.8f, 0.36f, 1f / COUNT_FACTOR_F));
    flash.setEndColor(new ColorRGBA(1f, 0.8f, 0.36f, 0f));
    flash.setStartSize(.1f);
    flash.setEndSize(3.0f);
    flash.setShape(new EmitterSphereShape(Vector3f.ZERO, .05f));
    flash.setParticlesPerSec(0);
    flash.setGravity(0, 0, 0);
    flash.setLowLife(.2f);
    flash.setHighLife(.2f);
    flash.getParticleInfluencer()
            .setInitialVelocity(new Vector3f(0, 5f, 0));
    flash.getParticleInfluencer().setVelocityVariation(1);
    flash.setImagesX(2);
    flash.setImagesY(2);
    Material mat = new Material(assetManager, "Common/MatDefs/Misc/Particle.j3md");
    mat.setTexture("Texture", assetManager.loadTexture("Effects/Explosion/flash.png"));
    mat.setBoolean("PointSprite", POINT_SPRITE);
    flash.setMaterial(mat);
    explosionEffect.attachChild(flash);
}
 

private void createSmokeTrail(){
        smoketrail = new ParticleEmitter("SmokeTrail", Type.Triangle, 22 * COUNT_FACTOR);
        smoketrail.setStartColor(new ColorRGBA(1f, 0.8f, 0.36f, (float) (1.0f / COUNT_FACTOR_F)));
        smoketrail.setEndColor(new ColorRGBA(1f, 0.8f, 0.36f, 0f));
        smoketrail.setStartSize(.2f);
        smoketrail.setEndSize(1f);

//        smoketrail.setShape(new EmitterSphereShape(Vector3f.ZERO, 1f));
        smoketrail.setFacingVelocity(true);
        smoketrail.setParticlesPerSec(0);
        smoketrail.setGravity(0, 1, 0);
        smoketrail.setLowLife(.4f);
        smoketrail.setHighLife(.5f);
        smoketrail.setInitialVelocity(new Vector3f(0, 12, 0));
        smoketrail.setVelocityVariation(1);
        smoketrail.setImagesX(1);
        smoketrail.setImagesY(3);
        Material mat = new Material(assetManager, "Common/MatDefs/Misc/Particle.j3md");
        mat.setTexture("Texture", assetManager.loadTexture("Effects/Explosion/smoketrail.png"));
        smoketrail.setMaterial(mat);
        explosionEffect.attachChild(smoketrail);
    }
 

private void createFire() {
    /** Uses Texture from jme3-test-data library! */
    ParticleEmitter fire = new ParticleEmitter("Emitter", ParticleMesh.Type.Triangle, 30);
    Material mat_red = new Material(assetManager, "Common/MatDefs/Misc/Particle.j3md");
    mat_red.setTexture("Texture", assetManager.loadTexture("Effects/Explosion/flame.png"));

    fire.setMaterial(mat_red);
    fire.setImagesX(2);
    fire.setImagesY(2); // 2x2 texture animation
    fire.setEndColor(new ColorRGBA(1f, 0f, 0f, 1f));   // red
    fire.setStartColor(new ColorRGBA(1f, 1f, 0f, 0.5f)); // yellow
    fire.getParticleInfluencer().setInitialVelocity(new Vector3f(0, 2, 0));
    fire.setStartSize(10f);
    fire.setEndSize(1f);
    fire.setGravity(0, 0, 0);
    fire.setLowLife(0.5f);
    fire.setHighLife(1.5f);
    fire.getParticleInfluencer().setVelocityVariation(0.3f);
    fire.setLocalTranslation(-350, 40, 430);

    fire.setQueueBucket(Bucket.Transparent);
    rootNode.attachChild(fire);
}
 

private void createSmokeTrail(){
        smoketrail = new ParticleEmitter("SmokeTrail", Type.Triangle, 22 * COUNT_FACTOR);
        smoketrail.setStartColor(new ColorRGBA(1f, 0.8f, 0.36f, 1.0f / COUNT_FACTOR_F));
        smoketrail.setEndColor(new ColorRGBA(1f, 0.8f, 0.36f, 0f));
        smoketrail.setStartSize(.2f);
        smoketrail.setEndSize(1f);

//        smoketrail.setShape(new EmitterSphereShape(Vector3f.ZERO, 1f));
        smoketrail.setFacingVelocity(true);
        smoketrail.setParticlesPerSec(0);
        smoketrail.setGravity(0, 1, 0);
        smoketrail.setLowLife(.4f);
        smoketrail.setHighLife(.5f);
        smoketrail.getParticleInfluencer()
                .setInitialVelocity(new Vector3f(0, 12, 0));
        smoketrail.getParticleInfluencer().setVelocityVariation(1);
        smoketrail.setImagesX(1);
        smoketrail.setImagesY(3);
        Material mat = new Material(assetManager, "Common/MatDefs/Misc/Particle.j3md");
        mat.setTexture("Texture", assetManager.loadTexture("Effects/Explosion/smoketrail.png"));
        smoketrail.setMaterial(mat);
        explosionEffect.attachChild(smoketrail);
    }
 

private void createSpark(){
    spark = new ParticleEmitter("Spark", Type.Triangle, 30 * COUNT_FACTOR);
    spark.setStartColor(new ColorRGBA(1f, 0.8f, 0.36f, (float) (1.0f / COUNT_FACTOR_F)));
    spark.setEndColor(new ColorRGBA(1f, 0.8f, 0.36f, 0f));
    spark.setStartSize(.5f);
    spark.setEndSize(.5f);
    spark.setFacingVelocity(true);
    spark.setParticlesPerSec(0);
    spark.setGravity(0, 5, 0);
    spark.setLowLife(1.1f);
    spark.setHighLife(1.5f);
    spark.getParticleInfluencer().setInitialVelocity(new Vector3f(0, 20, 0));
    spark.getParticleInfluencer().setVelocityVariation(1);
    spark.setImagesX(1);
    spark.setImagesY(1);
    Material mat = new Material(assetManager, "Common/MatDefs/Misc/Particle.j3md");
    mat.setTexture("Texture", assetManager.loadTexture("Effects/Explosion/spark.png"));
    spark.setMaterial(mat);
    explosionEffect.attachChild(spark);
}
 

private void createShockwave(){
        shockwave = new ParticleEmitter("Shockwave", Type.Triangle, 1 * COUNT_FACTOR);
//        shockwave.setRandomAngle(true);
        shockwave.setFaceNormal(Vector3f.UNIT_Y);
        shockwave.setStartColor(new ColorRGBA(.48f, 0.17f, 0.01f, .8f / COUNT_FACTOR_F));
        shockwave.setEndColor(new ColorRGBA(.48f, 0.17f, 0.01f, 0f));

        shockwave.setStartSize(0f);
        shockwave.setEndSize(7f);

        shockwave.setParticlesPerSec(0);
        shockwave.setGravity(0, 0, 0);
        shockwave.setLowLife(0.5f);
        shockwave.setHighLife(0.5f);
        shockwave.getParticleInfluencer()
                .setInitialVelocity(new Vector3f(0, 0, 0));
        shockwave.getParticleInfluencer().setVelocityVariation(0f);
        shockwave.setImagesX(1);
        shockwave.setImagesY(1);
        Material mat = new Material(assetManager, "Common/MatDefs/Misc/Particle.j3md");
        mat.setTexture("Texture", assetManager.loadTexture("Effects/Explosion/shockwave.png"));
        shockwave.setMaterial(mat);
        explosionEffect.attachChild(shockwave);
    }
 

@Override
public Node apply(Node node, BlenderContext blenderContext) {
    if (invalid) {
        LOGGER.log(Level.WARNING, "Particles modifier is invalid! Cannot be applied to: {0}", node.getName());
        return node;
    }

    MaterialHelper materialHelper = blenderContext.getHelper(MaterialHelper.class);
    ParticleEmitter emitter = particleEmitter.clone();

    // veryfying the alpha function for particles' texture
    Integer alphaFunction = MaterialHelper.ALPHA_MASK_HYPERBOLE;
    char nameSuffix = emitter.getName().charAt(emitter.getName().length() - 1);
    if (nameSuffix == 'B' || nameSuffix == 'N') {
        alphaFunction = MaterialHelper.ALPHA_MASK_NONE;
    }
    // removing the type suffix from the name
    emitter.setName(emitter.getName().substring(0, emitter.getName().length() - 1));

    // applying emitter shape
    EmitterShape emitterShape = emitter.getShape();
    List<Mesh> meshes = new ArrayList<Mesh>();
    for (Spatial spatial : node.getChildren()) {
        if (spatial instanceof Geometry) {
            Mesh mesh = ((Geometry) spatial).getMesh();
            if (mesh != null) {
                meshes.add(mesh);
                Material material = materialHelper.getParticlesMaterial(((Geometry) spatial).getMaterial(), alphaFunction, blenderContext);
                emitter.setMaterial(material);// TODO: divide into several pieces
            }
        }
    }
    if (meshes.size() > 0 && emitterShape instanceof EmitterMeshVertexShape) {
        ((EmitterMeshVertexShape) emitterShape).setMeshes(meshes);
    }

    node.attachChild(emitter);
    return node;
}
 

@Override
@FxThread
protected void process() {
    super.process();

    final NodeTree<?> nodeTree = getNodeTree();
    final ChangeConsumer changeConsumer = notNull(nodeTree.getChangeConsumer());
    final SceneLayer defaultLayer = getDefaultLayer(changeConsumer);

    final AssetManager assetManager = EditorUtil.getAssetManager();
    final Material material = new Material(assetManager,"Common/MatDefs/Misc/Particle.j3md");
    material.setTexture("Texture", assetManager.loadTexture( "Effects/Explosion/flame.png"));

    final ParticleEmitter emitter = createParticleEmitter();
    emitter.setMaterial(material);
    emitter.setImagesX(2);
    emitter.setImagesY(2); // 2x2 texture animation
    emitter.setEndColor(new ColorRGBA(1f, 0f, 0f, 1f));   // red
    emitter.setStartColor(new ColorRGBA(1f, 1f, 0f, 0.5f)); // yellow
    emitter.getParticleInfluencer().setInitialVelocity(new Vector3f(0, 2, 0));
    emitter.setStartSize(1.5f);
    emitter.setEndSize(0.1f);
    emitter.setGravity(0, 0, 0);
    emitter.setLowLife(1f);
    emitter.setHighLife(3f);
    emitter.getParticleInfluencer().setVelocityVariation(0.3f);
    emitter.setEnabled(true);

    if (defaultLayer != null) {
        SceneLayer.setLayer(defaultLayer, emitter);
    }

    final TreeNode<?> treeNode = getNode();
    final Node parent = (Node) treeNode.getElement();

    changeConsumer.execute(new AddChildOperation(emitter, parent));
}
 

@Override
public void simpleInitApp() {
    emit = new ParticleEmitter("Emitter", Type.Triangle, 300);
    emit.setGravity(0, 0, 0);
    emit.setVelocityVariation(1);
    emit.setLowLife(1);
    emit.setHighLife(1);
    emit.setInitialVelocity(new Vector3f(0, .5f, 0));
    emit.setImagesX(15);
    Material mat = new Material(assetManager, "Common/MatDefs/Misc/Particle.j3md");
    mat.setTexture("Texture", assetManager.loadTexture("Effects/Smoke/Smoke.png"));
    emit.setMaterial(mat);
    
    rootNode.attachChild(emit);
    
    AmbientLight al = new AmbientLight();
    al.setColor(new ColorRGBA(0.84f, 0.80f, 0.80f, 1.0f));
    rootNode.addLight(al);
    
    
    
    inputManager.addListener(new ActionListener() {
        
        public void onAction(String name, boolean isPressed, float tpf) {
            if ("setNum".equals(name) && isPressed) {
                emit.setNumParticles(1000);
            }
        }
    }, "setNum");
    
    inputManager.addMapping("setNum", new KeyTrigger(KeyInput.KEY_SPACE));
}
 

@Override
public void simpleInitApp() {
    emit = new ParticleEmitter("Emitter", Type.Triangle, 300);
    emit.setGravity(0, 0, 0);
    emit.getParticleInfluencer().setVelocityVariation(1);
    emit.setLowLife(1);
    emit.setHighLife(1);
    emit.getParticleInfluencer()
            .setInitialVelocity(new Vector3f(0, .5f, 0));
    emit.setImagesX(15);
    Material mat = new Material(assetManager, "Common/MatDefs/Misc/Particle.j3md");
    mat.setTexture("Texture", assetManager.loadTexture("Effects/Smoke/Smoke.png"));
    emit.setMaterial(mat);
    
    rootNode.attachChild(emit);
    
    inputManager.addListener(new ActionListener() {
        
        @Override
        public void onAction(String name, boolean isPressed, float tpf) {
            if ("setNum".equals(name) && isPressed) {
                emit.setNumParticles(1000);
            }
        }
    }, "setNum");
    
    inputManager.addMapping("setNum", new KeyTrigger(KeyInput.KEY_SPACE));
}
 

@Override
public void simpleInitApp() {
    final ParticleEmitter emit = new ParticleEmitter("Emitter", Type.Point, 10000);
    emit.setShape(new EmitterBoxShape(new Vector3f(-1.8f, -1.8f, -1.8f),
                                      new Vector3f(1.8f, 1.8f, 1.8f)));
    emit.setGravity(0, 0, 0);
    emit.setLowLife(60);
    emit.setHighLife(60);
    emit.getParticleInfluencer().setInitialVelocity(new Vector3f(0, 0, 0));
    emit.setImagesX(15);
    emit.setStartSize(0.05f);
    emit.setEndSize(0.05f);
    emit.setStartColor(ColorRGBA.White);
    emit.setEndColor(ColorRGBA.White);
    emit.setSelectRandomImage(true);
    emit.emitAllParticles();
    
    Material mat = new Material(assetManager, "Common/MatDefs/Misc/Particle.j3md");
    mat.setBoolean("PointSprite", true);
    mat.setTexture("Texture", assetManager.loadTexture("Effects/Smoke/Smoke.png"));
    emit.setMaterial(mat);

    rootNode.attachChild(emit);
    inputManager.addListener(new ActionListener() {
        
        public void onAction(String name, boolean isPressed, float tpf) {
            if ("setNum".equals(name) && isPressed) {
                emit.setNumParticles(5000);
                emit.emitAllParticles();
            }
        }
    }, "setNum");
    
    inputManager.addMapping("setNum", new KeyTrigger(KeyInput.KEY_SPACE));
    
}
 

private void createParticles() {
    
    Material material = new Material(assetManager, "Common/MatDefs/Misc/Particle.j3md");
    material.setTexture("Texture", assetManager.loadTexture("Effects/Explosion/flame.png"));
    material.setFloat("Softness", 3f); // 
    
    //Fire
    ParticleEmitter fire = new ParticleEmitter("Fire", ParticleMesh.Type.Triangle, 30);
    fire.setMaterial(material);
    fire.setShape(new EmitterSphereShape(Vector3f.ZERO, 0.1f));
    fire.setImagesX(2);
    fire.setImagesY(2); // 2x2 texture animation
    fire.setEndColor(new ColorRGBA(1f, 0f, 0f, 1f)); // red
    fire.setStartColor(new ColorRGBA(1f, 1f, 0f, 0.5f)); // yellow
    fire.setStartSize(0.6f);
    fire.setEndSize(0.01f);
    fire.setGravity(0, -0.3f, 0);
    fire.setLowLife(0.5f);
    fire.setHighLife(3f);
    fire.setLocalTranslation(0, 0.2f, 0);

    particleNode.attachChild(fire);
    
    
    ParticleEmitter smoke = new ParticleEmitter("Smoke", ParticleMesh.Type.Triangle, 30);
    smoke.setMaterial(material);
    smoke.setShape(new EmitterSphereShape(Vector3f.ZERO, 5));
    smoke.setImagesX(1);
    smoke.setImagesY(1); // 2x2 texture animation
    smoke.setStartColor(new ColorRGBA(0.1f, 0.1f, 0.1f,1f)); // dark gray
    smoke.setEndColor(new ColorRGBA(0.5f, 0.5f, 0.5f, 0.3f)); // gray      
    smoke.setStartSize(3f);
    smoke.setEndSize(5f);
    smoke.setGravity(0, -0.001f, 0);
    smoke.setLowLife(100f);
    smoke.setHighLife(100f);
    smoke.setLocalTranslation(0, 0.1f, 0);        
    smoke.emitAllParticles();
    
    particleNode.attachChild(smoke);
}
 

@Override
  public void simpleInitApp() {
    ParticleEmitter fire = 
            new ParticleEmitter("Emitter", ParticleMesh.Type.Triangle, 30);
    Material mat_red = new Material(assetManager, 
            "Common/MatDefs/Misc/Particle.j3md");
    mat_red.setTexture("Texture", assetManager.loadTexture(
            "Effects/Explosion/flame.png"));
    fire.setMaterial(mat_red);
    fire.setImagesX(2); 
    fire.setImagesY(2); // 2x2 texture animation
    fire.setEndColor(  new ColorRGBA(1f, 0f, 0f, 1f));   // red
    fire.setStartColor(new ColorRGBA(1f, 1f, 0f, 0.5f)); // yellow
    fire.getParticleInfluencer().setInitialVelocity(new Vector3f(0, 2, 0));
    fire.setStartSize(1.5f);
    fire.setEndSize(0.1f);
    fire.setGravity(0, 0, 0);
    fire.setLowLife(1f);
    fire.setHighLife(3f);
    fire.getParticleInfluencer().setVelocityVariation(0.3f);
    rootNode.attachChild(fire);

    ParticleEmitter debris = 
            new ParticleEmitter("Debris", ParticleMesh.Type.Triangle, 10);
    Material debris_mat = new Material(assetManager, 
            "Common/MatDefs/Misc/Particle.j3md");
    debris_mat.setTexture("Texture", assetManager.loadTexture(
            "Effects/Explosion/Debris.png"));
    debris.setMaterial(debris_mat);
    debris.setImagesX(3); 
    debris.setImagesY(3); // 3x3 texture animation
    debris.setSelectRandomImage(true);
    debris.setRotateSpeed(4);
    debris.getParticleInfluencer().setInitialVelocity(new Vector3f(0, 4, 0));
    debris.setStartColor(ColorRGBA.White);
    debris.setGravity(0, 6, 0);
    debris.getParticleInfluencer().setVelocityVariation(.60f);
    rootNode.attachChild(debris);
    debris.emitAllParticles();

//    ParticleEmitter water = 
//            new ParticleEmitter("Emitter", ParticleMesh.Type.Triangle, 20);
//    Material mat_blue = new Material(assetManager, 
//            "Common/MatDefs/Misc/Particle.j3md");
//    mat_blue.setTexture("Texture", assetManager.loadTexture(
//            "Effects/Explosion/flame.png"));
//    water.setMaterial(mat_blue);
//    water.setImagesX(2); 
//    water.setImagesY(2); // 2x2 texture animation
//    water.setStartColor( ColorRGBA.Blue); 
//    water.setEndColor( ColorRGBA.Cyan); 
//    water.getParticleInfluencer().setInitialVelocity(new Vector3f(0, -4, 0));
//    water.setStartSize(1f);
//    water.setEndSize(1.5f);
//    water.setGravity(0,1,0);
//    water.setLowLife(1f);
//    water.setHighLife(1f);
//    water.getParticleInfluencer().setVelocityVariation(0.1f);
//    water.setLocalTranslation(0, 6, 0);
//    rootNode.attachChild(water);

  }