How to add and remove a SKErmitterNode within a sequence?

Question

I'm adding a SKErmitterNode from the update() function. I want to remove the SKErmitterNode after 2 seconds, therefore I made a sequence but in the sequence, I can´t add Nodes. And if I add the Node outside of the sequence it gets added over and over again(because I´m doing all of this in the update function) Does someone know a better way to do this?

Here is my Code from the update function:

 override func update(_ currentTime: CFTimeInterval) {

    if player.position.y <= player.size.height / 2{

        self.player.removeFromParent()

        if let particles = SKEmitterNode(fileNamed: "MyParticle.sks") {
            particles.position = player.position

            let addParticle = addChild(particles)
            let wait = SKAction.wait(forDuration: 2.0)
            let removeParticle = SKAction.removeFromParent()
            let particleSequence = SKAction.sequence([addParticle, wait, removeParticle]) //Error ->Cannot convert value of type 'Void' to expected element type 'SKAction'
            self.run(SKAction.run(particleSequence))

        }
    }

Answer 1

所以我建议你做的是创建一个类似下面的函数

func myExplosion (explosionPosition: CGPoint){
    let explosion = SKEmitterNode(fileNamed: "MyParticle")// borrowed this from you
    explosion?.position = explosionPosition
    explosion?.zPosition = 3
    self.addChild(explosion!)
    self.run(SKAction.wait(forDuration: 2)){//you can always change the duration to whatever you want
        explosion?.removeFromParent()
    }
}

然后在使用此功能时，请按照

使用它

myExplosion(explosionPosition: player.position)

希望这可以帮到你。