CODEWITHSUNDEEP
iosobjective-cios7sprite-kit
Marc
Marc

Reputation: 216

pause spritekit scene and show "paused" label

I want to show a "paused" SKLabelNode when someone clicks on the screen and therefore pauses the sprite kit game.

So I have in touchesBegan ->

[self.pausedLabel setHidden:!self.pausedLabel.hidden];
[self.scene.view setPaused:!self.scene.view.paused];

The Game is paused correctly but the SKLabelNode is not shown (scene not rendered before paused?!) If I add a NSTimer for pausing the scene the label is shown, but then the game continues for that timer-time.

Does anyone have a better solution for this?

Thanks in advance

Upvotes: 2

Views: 1136

Answers (2)

Mick MacCallum
Mick MacCallum

Reputation: 130193

I would use SKAction for this. You can use +runBlock: to add the code related to hiding the label, and then use the -runAction method with the completion handler to pause the scene. The runBlock: method may return immediately, but this way, the screen manages to update before the scene is paused.

SKAction *action = [SKAction runBlock:^{
    [self.pausedLabel setHidden:!self.pausedLabel.hidden];
}];

[self.pausedLabel runAction:action completion:^{
    [self.scene.view setPaused:!self.scene.paused];
}];

Upvotes: 1

giorashc
giorashc

Reputation: 13713

Just use a state ivar to determine if the scene should update its content or not. When you click the button set this state to PAUSE and in your scene frame update loop test the state. 

if (_state != PAUSE) {// Use enum for the state var
    // Update scene objects
}

when your button is clicked:

  • Add pause label to scene
  • Set state to PAUSE

The benefits of this approach is that it allows you to decide exactly what will happen on pause (opposing to pausing the whole scene). You can animate a cool background while in pause or do anything you'd like as this is totally in your control

Upvotes: 0

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