Frostwithasideofsalt

USA I do stuff (pfp by @Rusty-Box)

Results 6 comments of


                                            Frostwithasideofsalt

Allow us to set .sprite files as backgrounds

Someone should work on this lol

Rework CMake enviroment

Marty are you okay

Revenge in Redmond Update

@MatusGuy could it possible for you to schedule this PR to be merged?

Issues with gradients and camera zoom

![image](https://github.com/SuperTux/supertux/assets/60326522/6f5a1b9e-d2d4-4751-b64e-532dd85a7202)

Tux sliding on belly sprite should be orientated to fit the angle of the slope they're sliding down

THIS IS PEAK

Use `simplesquirrel` library for creating Squirrel API binds

tested a bunch, seems to work fine.