Exception when trying to render

[Danjb1]

Java Version

>java --version
openjdk 15.0.1 2020-10-20
OpenJDK Runtime Environment (build 15.0.1+9-18)
OpenJDK 64-Bit Server VM (build 15.0.1+9-18, mixed mode, sharing)

JavaFX Version

openjfx-11.0.2_windows-x64_bin-sdk

Launch Command

java --module-path "C:\Program Files\Java\javafx-sdk-11.0.2\lib" --add-modules=javafx.controls,javafx.base,javafx.graphics,javafx.fxml -jar ChunkyLauncher.jar --launcher

Launcher Options

Steps to Reproduce

1. Open my world
2. Select some Chunks (in this case a 2x2 block)
3. Switch to "Render Preview" tab
4. Click on the play button and wait for the progress bar to complete

5. An error is logged, and nothing is rendered:

   Exception in thread "Scene Manager" java.lang.NullPointerException: Cannot invoke "se.llbit.chunky.world.WorldTexture.store(java.io.DataOutputStream)" because "waterColors" is null
       at se.llbit.chunky.resources.OctreeFileFormat.store(OctreeFileFormat.java:129)
       at se.llbit.chunky.renderer.scene.Scene.saveOctree(Scene.java:1884)
       at se.llbit.chunky.renderer.scene.Scene.saveScene(Scene.java:472)
       at se.llbit.chunky.renderer.scene.SynchronousSceneManager.saveScene(SynchronousSceneManager.java:130)
       at se.llbit.chunky.renderer.scene.AsynchronousSceneManager.lambda$saveScene$1(AsynchronousSceneManager.java:122)
       at se.llbit.chunky.renderer.scene.AsynchronousSceneManager.run(AsynchronousSceneManager.java:81)

[leMaik]

Finally I was able to reproduce this. :tada: Happens when the scene is saved without any chunks being loaded.

[leMaik]

Can't reproduce this in the latest snapshots anymore (but it was a bug in 2.3.0).