Background

[thombruce]

closes #118

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Internal use. Do not delete.

• [x] Tests passing
• [x] Coverage sufficient
• [x] Manual review
• [x] No A11y regression
• [x] Translations provided or not needed

[thombruce]

• [x] Consider adding Kataster and its author to Verse credits (it continues to be an incredibly valuable resource for me)
• [x] Consider adding Pablo Roman Andrioli to the credits too, whose shader the Kataster shader is based on

How we give these particular attributions I'm unsure... Special Thanks?

[thombruce]

Do play with the variables in Pablo's shader here: https://www.shadertoy.com/view/XlfGRj

Tweaking the values gives a real sense for what they actually do... Maybe leave formuparam alone though; effects of changing this are highly unpredictable, and whatever it is doing is wild alien magic.

[thombruce]

• [x] What do we want to do with the old background?

Deleted it; kept the assets. If we need it again we can reimplement from the Git history.

[thombruce]

Problem:

Because the background now moves with the camera, and the camera moves with the player...

When we restart the game, the camera may be offset such that the respawned background is either only partially on screen or not on screen at all. We can see its edges, or the black ClearColor of the game window.

Ways to address this:

1. Follow camera on every Update (not just active gamestate); this would ensure that it is appropriately positioned on reload
2. Reset the camera position on game reset; this would ensure that the camera is positioned with the background in view

Either of those works, so pick a favourite. Probably option 2 since it doesn't require a system to run on update...