Asset overrides/delta updates for UI screens and skins

[skaldarnar]

Theming for Game Modes

Modules can provide assets and reusable resources in form of textures, prefabs, UI screens, etc. Adjusting the visuals of these assets for consistent look and feel is essential for game modes.

UI screens defined in modules may set a skin to be used for visual style. Ideally, a delta update of the *.ui file should enable to change the skin while not touching anything else of the screen definition.

Approaches

The following approaches were taken to change the texture used for the background of the UI screen:

not working

• create new skin file
• delta update for the *.ui file to point to different skin (are delta updates working for .ui files?)

not working

• create new skin file
• override *.ui file with a copy and change referenced skin (are overrides working for .ui files?)

not working

• overriding the *.skin file referenced in the original *.ui file (are overrides working for .skin files?)

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However, the following does work:

working

• override *.ui file and changing the content of the screen

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References

• UI skin inheritance not working across modules #1621 UI skin inheritance not working across modules
• Tutorial: NUI
• Tutorial: Deltas and Overrides

[skaldarnar]

This is sufficiently solved by #3241 (for now). @vampcat pointed out that there is a general issue regarding reuse of assets between modules connected to simple names vs fully qualified names.