With the possibility of ROTATING the effect.

Vladislav Shesternin

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1 min read

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May 27, 2024

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Full code for ParticleEffectActor:

class AParticleEffectActor(
    private val particleEffect: ParticleEffect,
    private val resetOnStart  : Boolean
): Actor(), Disposable {

    private val originalAngles: List<Static.AngleRange> = particleEffect.emitters.map { emitter ->
        Static.AngleRange(
            emitter.angle.lowMin,
            emitter.angle.lowMax,
            emitter.angle.highMin,
            emitter.angle.highMax
        )
    }

    override fun act(delta: Float) {
        super.act(delta)
        particleEffect.setPosition(x, y)
        particleEffect.update(delta)
    }

    override fun draw(batch: Batch, parentAlpha: Float) {
        particleEffect.draw(batch)
    }

    fun start() {
        if (resetOnStart) {
            particleEffect.reset(false)
        }
        particleEffect.start()
    }

    override fun scaleChanged() {
        super.scaleChanged()
        particleEffect.scaleEffect(scaleX, scaleY, scaleY)
    }

    override fun positionChanged() {
        super.positionChanged()
        particleEffect.setPosition(x, y)
    }

    override fun rotationChanged() {
        super.rotationChanged()

        particleEffect.emitters.forEachIndexed { index, emitter ->
            originalAngles[index].apply {
                emitter.angle.setLow(lowMin + rotation, lowMax + rotation)
                emitter.angle.setHigh(highMin + rotation, highMax + rotation)
            }
        }
    }

    override fun setPosition(x: Float, y: Float) {
        super.setPosition(x, y)
        particleEffect.setPosition(x, y)
    }

    override fun setRotation(degrees: Float) {
        super.setRotation(degrees)
        rotationChanged()
    }

    override fun dispose() {
        particleEffect.dispose()
    }

    fun allowCompletion() {
        particleEffect.allowCompletion()
    }

    object Static {
        data class AngleRange(
            val lowMin: Float,
            val lowMax: Float,
            val highMin: Float,
            val highMax: Float
        )
    }
}

To load Particle Effects read:

PS. Vel_daN: Love what You DO 💚.