CODEWITHSUNDEEP
swiftsprite-kit
West1
West1

Reputation: 1918

Run 2 '.move' SKActions simultaneously

I'm working on a confetti implementation using SKSpriteNode and SKAction.

Desired behavior: The confetti should sway back and forth while also falling down.

Actual behavior: The confetti falls down -- but does not sway back and forth.

What I've tried: Putting the two actions into a group, like this:

            let x = MainData.screenWidth*CGFloat.random(in: 0...1)
            let testNode = SKSpriteNode(texture: MainData.confettiTexture)
            let gravityAction = SKAction.move(to: CGPoint(x: x, y: -100.0), duration: 5.0)
            let swaySequence = SKAction.sequence([
                SKAction.move(by: CGVector(dx: -MainData.screenWidth*0.2, dy: 0.0), duration: 0.5),
                SKAction.move(by: CGVector(dx: MainData.screenWidth*0.2, dy: 0.0), duration: 0.5)
            ])
            let swayInfinitely = SKAction.repeatForever(swaySequence)
            let group = SKAction.group([
                swayInfinitely,
                gravityAction
            ])
            
            gravityAction.timingMode = .easeIn
            
            testNode.position = CGPoint(x: x, y: MainData.screenHeight)
            testNode.size = CGSize(width: MainData.screenWidth*0.05, height: MainData.screenWidth*0.05)
            
            testNode.run(group)

My theory: I'm guessing that this problem is happening because I'm trying to use move(to:duration:) and move(by:duration:) at the same time, thus supplying conflicting x-axis values.

So, how can I get my confetti to sway back and forth while also falling down? What am I doing wrong/not understanding about SKAction?

Upvotes: 1

Views: 49

Answers (1)

Shadowrun
Shadowrun

Reputation: 3857

Put the confetti nodes as child nodes of a parent SKNode. Have the parent node run the gravity action, and the confetti nodes run the sway one.

Upvotes: 1

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