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sprite-kitgameplay-kit

How can I use GameplayKit State Machine for sprite animation?

I have two animations for my player to run and jump. Can I control these animations using GameplayKit's state machines? If so, how? In this project, I use SpriteKit and GameplayKit for Entity-Component architecture and State Machine.

Solution

  • You need set first the StateMachine and fill with your custom classes

    self.playerStateMachine = GKStateMachine(states: [
    PlayerRunning(player),
    PlayerJumping(player)
])

    Then when you need to enter to state, can be with:

    self.playerStateMachine?.enter(PlayerRunning.self)

    On the state you can perform changes like:

    override func didEnter(from previousState: GKState?) {
    self.player?.run(runAnimation)
}

    Example:

    enter image description here

    Please take a look of complete example here: https://github.com/Maetschl/SpriteKitExamples/blob/master/StateMachineAnimation/StateMachineAnimation/GameScene.swift