Add `scripts/check_config_variables.py` which checks if config variables defined in `src/game/variables.h` and `src/engine/shared/config_variables.h` are unused.
6372: Check in CI that no C standard headers are used, replace all usages of C standard headers with C++ headers, replace usages of C math functions r=def- a=Robyt3
Closes#6334.
## Checklist
- [ ] Tested the change ingame
- [ ] Provided screenshots if it is a visual change
- [ ] Tested in combination with possibly related configuration options
- [ ] Written a unit test (especially base/) or added coverage to integration test
- [ ] Considered possible null pointers and out of bounds array indexing
- [ ] Changed no physics that affect existing maps
- [ ] Tested the change with [ASan+UBSan or valgrind's memcheck](https://github.com/ddnet/ddnet/#using-addresssanitizer--undefinedbehavioursanitizer-or-valgrinds-memcheck) (optional)
Co-authored-by: Robert Müller <robytemueller@gmail.com>
Add `scripts/check_standard_headers.sh` to check that no C standard header is included in our code. The script prints an error message for every C header used as well as the corresponding C++ header that should be used instead.
The script is added to the style checking CI.
5905: Update Tutorial map by unique_2 r=heinrich5991 a=def-
> We made a small update of the tutorial map because of the new freeze
> graphics. We also made the teleport tiles the airjump hints
> consistent. Idk how updating the map works on your end, ideally
> everyone keeps their time because the changes don't influence anyone's
> times.
<!-- What is the motivation for the changes of this pull request? -->
<!-- Note that builds and other checks will be run for your change. Don't feel intimidated by failures in some of the checks. If you can't resolve them yourself, experienced devs can also resolve them before merging your pull request. -->
## Checklist
- [ ] Tested the change ingame
- [ ] Provided screenshots if it is a visual change
- [ ] Tested in combination with possibly related configuration options
- [ ] Written a unit test (especially base/) or added coverage to integration test
- [ ] Considered possible null pointers and out of bounds array indexing
- [ ] Changed no physics that affect existing maps
- [ ] Tested the change with [ASan+UBSan or valgrind's memcheck](https://github.com/ddnet/ddnet/#using-addresssanitizer--undefinedbehavioursanitizer-or-valgrinds-memcheck) (optional)
Co-authored-by: def <dennis@felsin9.de>
> We made a small update of the tutorial map because of the new freeze
> graphics. We also made the teleport tiles the airjump hints
> consistent. Idk how updating the map works on your end, ideally
> everyone keeps their time because the changes don't influence anyone's
> times.
Update LearnToPlay with new time cp version
Also check maps in CI using Patiga's twmap-check-ddnet tool.
Chiller Dragon
