CODEWITHSUNDEEP
swiftsprite-kit
Venkat
Venkat

Reputation: 13

Should I remove all SKSpriteNodes and Labels when I switch from one node to another

My iOS game has a couple of scenes. I've noticed some lag between switching scenes, and I was wondering if it might be because I'm not removing all nodes and labels from parents when I transition to another scene. Is it good practice to remove all nodes from their parent when transitioning to another scene?

Also, I've noticed that when I do remove all nodes, the transition effect is kind of ruined, as the screen goes all black during the transition.

Is it possible to delete nodes(of previous scene) after the transition to next scene?

Upvotes: 1

Views: 181

Answers (1)

Nicolas Nascimento
Nicolas Nascimento

Reputation: 180

When you perform the transition, the scene and its nodes will be released from memory, unless you have a strong reference cycle. Also, you should know that SpriteKit has its own cache system for the SKTextures, so not all memory will freed.

The lag could be caused by a lot of thing, some possibilities:

  1. If you instantiate the new scene on touchesEnded (or your custom button callback closure), the lag could be caused because you're doing too much work on the initialization. This can be solved by, for example, preloading the scene with a closure that run in background and, when you have to run the transition, you already have everything loaded. An example follows: enter image description here

  2. Maybe you're using assets that are too large and because they take longer to be loaded, you have the lag. You could solve this by, for example, converting images that don't need an alpha channel to .jpeg. Another solution would be to preload assets. A code example follows. enter image description here

Upvotes: 2

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