how to fix stage manager in swift

The following steps can help you fix issues with the stage manager in Swift:

1. Ensure that your class implements the SKSceneDelegate protocol:

main.swift
class GameScene: SKScene, SKSceneDelegate {
    // ...
}
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2. Create an instance of SKView to present your scene:

main.swift
let view = view as! SKView
view.presentScene(scene)
view.ignoresSiblingOrder = true
view.showsFPS = true
view.showsNodeCount = true
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3. Set the scene.delegate property to enable the stage manager:

main.swift
scene.delegate = self
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4. Implement the update(_:for:) method in your scene:

main.swift
func update(_ currentTime: TimeInterval, for scene: SKScene) {
    // Your code here
}
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5. Use the scene(_:willMoveFrom:) method to clean up any remaining nodes when the scene is removed:

main.swift
func scene(_ scene: SKScene, willMoveFrom view: SKView) {
    // Your code here
}
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By following these steps, you can fix issues with the stage manager in Swift and ensure that your game runs smoothly.