android - フルーツニンジャやベジサムライのようなタッチでの描画線効果とエンジン

Question

Fruit NinjaやVeggie Samuraiに似た刃の効果でAndEngineに線を引きたい。誰でも私を助けることができますか？サンプルコードを教えてください。

Answer 1

たぶん、私は遅れていますが、これが他の人に役立つことを願っています.

    @Override
    public boolean onSceneTouchEvent(Scene pScene, TouchEvent pSceneTouchEvent) {

        final float touchX = pSceneTouchEvent.getX();
        final float touchY = pSceneTouchEvent.getY();

        if (pSceneTouchEvent.isActionDown()) {
            initTrail(touchX, touchY);
            swipeGestureSprite = addSwipeSprite(touchX, touchY);
        } else if (pSceneTouchEvent.isActionMove()) {

            moveTrail(pSceneTouchEvent.getX(), pSceneTouchEvent.getY(), 0);

            if (swipeGestureSprite != null) {
                swipeGestureSprite.setX(touchX);
                swipeGestureSprite.setY(touchY);
            }
        } else if (pSceneTouchEvent.isActionUp()) {

            mScene.detachChild(this.particleSystem);

            if (swipeGestureSprite != null) {
                this.mScene.detachChild(swipeGestureSprite);
                swipeGestureSprite = null;
            }

            return true;
        }

        return false;
    }




    private void initTrail(float mX, float mY) {
        this.particleEmitter = new PointParticleEmitter(mX, mY);
        this.particleSystem = new SpriteParticleSystem(particleEmitter, 1000, 1000, 5000, this.mRibbon, this.getVertexBufferObjectManager());
        particleSystem.addParticleInitializer(new BlendFunctionParticleInitializer<Sprite>(GLES20.GL_SRC_ALPHA, GLES20.GL_ONE));
        particleSystem.addParticleInitializer(new ExpireParticleInitializer<Sprite>(1));
        particleSystem.addParticleModifier(new ScaleParticleModifier<Sprite>(0, 1, 1, 0f));
        particleSystem.addParticleModifier(new AlphaParticleModifier<Sprite>(0, 1, 1, 0));
        this.mScene.attachChild(particleSystem);
    }


private void moveTrail(float trailX, float trailY, int count) {
        if (particleEmitter == null) {
            initTrail(trailX, trailY);
        }

        particleEmitter.setCenter(trailX, trailY);
    }