How can I have an SKSpriteNode follow the same path back and forth?

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Created Feb ’21

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My code is compartmentalized over many files, so I hope I can describe this easily.

I have a path that goes from point A to point B
I place an SKSpriteNode at point A and execute:

Code Block iconPath[0] = the path
SKAction.follow(iconPath[0], asOffset: false, orientToPath: false, duration: 1))

I execute that SKACtion and as I expected, my SKNode goes from point A to point B. Fine.

I'm not sure how to reverse it, I assumed from the dox that calling that same SKAction as is, would make the SKNode go from point B to A.

Answered by SergioDCQ in 663920022

Actually someone gave me an easier answer on StackOverflow. This is a quote from the link below

There is a method called reversed() which you could use.
Below I have given your action a name of "youraction"

Code Block let youraction = SKAction.follow(iconPath0, asOffset: false, orientToPath: false, duration: 1)
let reverseaction = SKAction.reversed(youraction)
yourspritenode.run(reverseaction)

Alternatively, you can just use reversed after the action name to run it in reverse:

Code Block yourspritenode.run(youraction.reversed())

https://stackoverflow.com/questions/66354936/how-can-i-have-an-skspritenode-follow-the-same-path-back-and-forth/66357189#66357189

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Answer 1

szymczyk OP

Feb ’21

You created an action to go from A to B. Create a second action to go from B to A. Create an SKAction sequence with the two actions and run the sequence.

Code Block let sequence = SKAction.sequence([firstAction, secondAction])
sprite.run(sequence)

firstAction and secondAction are the actions you created to move from A to B and B to A. sprite is the sprite node to move with the action sequence.

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Answer 2

SergioDCQ OP

Feb ’21

Accepted Answer

Actually someone gave me an easier answer on StackOverflow. This is a quote from the link below

There is a method called reversed() which you could use.
Below I have given your action a name of "youraction"

Code Block let youraction = SKAction.follow(iconPath0, asOffset: false, orientToPath: false, duration: 1)
let reverseaction = SKAction.reversed(youraction)
yourspritenode.run(reverseaction)

Alternatively, you can just use reversed after the action name to run it in reverse:

Code Block yourspritenode.run(youraction.reversed())

https://stackoverflow.com/questions/66354936/how-can-i-have-an-skspritenode-follow-the-same-path-back-and-forth/66357189#66357189

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