SpriteKit Particle Emitter Not Appearing in Xcode

问题:

I'm having a constant issue of particle effects not appearing in the editor. Everything works fine when I first create them, but after some time they stop appearing. I just see the black background, but the particles aren't there.

The only way I'm able to deal with this problem is to delete the node and create a new particle node with the same attributes, which is time consuming and annoying. And then, after a while, the same thing happens to the new particle nodes.

Anyone else experience this?

回答1:

This happens to me all of time after editing a value and switching to code view of another page. Come back and the preview is gone. Can confirm it is still broken in Xcode 7.3 Beta

There are a couple of home remedies that work until it gets fixed by Apple.

Right click on the file --> Open As --> Quick Look select a different file and come back and it should work now

or

Close the emitter document with File --> Close “Particle.sks” (Control-Command-W) and reopening it should circumvent the issue.

Hope this helps in the mean time