How to transport SKAction between devices?

Question

I'm trying to send a SKAction between devices but I've got some problem... could you help me please? This is my code to send it:

let movment1 = SKAction.moveTo(x: 1600, duration: 0.25)
    car.run(movment1)
    var positionToSend = movment1
    let dataSend = Data(bytes: &positionToSend, count: MemoryLayout.size(ofValue: positionToSend))
    try match?.sendData(toAllPlayers: dataSend, with: GKMatchSendDataMode.reliable)

and this is how I receive it:

func receiveDataP(position: Data, player: GKPlayer) {
    let _ : SKAction = position.withUnsafeBytes { $0.pointee }
}

This is not working, in fact I was just trying...can someone help me rewriting the correct code? I'm getting mad...

Answer 1

Instead of sending the whole SKAction, you can just send the necessary information needed to recreate the SKAction in the other device.

Here, I suppose an SKAction is described an x value and a duration. If duration is always 0.25 then you don't need to send the duration.

Create something like this:

struct SKActionDescriptor : Codable {
    let x: CGFloat
    let duration: Double
}

To create the data to send, use a JSONEncoder:

let encoder = JSONEncoder()
let data = try! encoder.encode(SKActionDescriptor(x: 1600, duration: 0.25))

And you can use a JSONDecoder at the other end:

let decoder = JSONDecoder()
let descriptor = try! decoder.decode(SKActionDescriptor.self, from: receivedData)

And then create an SKAction:

let action = SKAction.moveTo(x: descriptor.x, duration: descriptor.duration)