Table of Contents

Particle effect component

Enemies mount particle components

Particles disappear

Particle effect component

ParticleRenderComponent.java Defines the loading path and loading time of the particle effect file. Through getZIndex() drawing priority of the current entity. startEffect()is used to determine whether to trigger particle effects.

 public void create() {
        super.create();
        pe = new ParticleEffect();
        pe.load(Gdx.files.internal(texturePath), Gdx.files.internal("images/particle"));
    }

public float getZIndex() {
        return 1;
    }

    public void startEffect() {
        EffectStart = true;
    }

 protected void draw(SpriteBatch batch) {
        if (EffectStart) {
            // for situation the entity is disappeared but particle effect still exist.
            Vector2 entityPosition = entity.getPosition();

            if (!entity.getType().equals("Portal") && !entity.getType().equals("FlyingMonkey")) {
                logger.info("Position = {}, entity = {}, disappear = {}, removeTexture = {}", entityPosition, entity, entity.isDisappear(), entity.isRemoveTexture());
            }
            pe.update(Gdx.graphics.getDeltaTime());
            pe.setPosition(entityPosition.x, entityPosition.y);
            pe.draw(batch);
            if (pe.isComplete()) {
                pe.reset();
            }
            particlePlayTime += timeSource.getDeltaTime();
        }
    }

Enemies mount particle components

The following is an example of entity mounted particle effects,this is very similar to how to mount animation render component

ParticleRenderComponent particle =
                new ParticleRenderComponent("images/particle/plant2.party");

        obstacle.addComponent(particle)

particle.startEffect();
  

Particles disappear

in Entity.java use etDisappearAfterParticle set disappear to true. These variables play a role in removeAfterParticle() and update().

 public void setDisappearAfterParticle(float particleTime, DisappearType disappearType) {
        this.disappear = true;
        this.particleTime = particleTime;
        this.disappearType = disappearType;
        logger.debug("Setting disappear={} on entity {}", disappear, this);
    }

    public void setParticleTime(float particleTime) {
        this.particleTime = particleTime;
    }

use removeAfterParticle(), set obstacles disappear after playing the particle for particleTime second. Is called by update().

 public void removeAfterParticle() {
        if (this.getComponent(ParticleRenderComponent.class).getParticlePlayTime() > particleTime) {
            disposeExceptAnimationComponent();
        }
    }