Handle the appropriate SDL events to open new joysticks when they are connected and remove joysticks when they are disconnected.
If the active joystick gets disconnected, then the first joystick in the list will be activated as a fallback.
If the previously activated joystick gets reconnected, it will be activated again automatically, as it is identified by the GUID stored in the configuration.
The stored joystick GUID is only updated when the user manually selects a new joystick in the controls settings or with the console.
Closes#6152.
Instead of considering diagonal hat inputs (e.g. up-left) as separate keys, consider them as inputs for both cardinal directions (e.g. up and left) at the same time.
This improves input with gamecontrollers that map the D-Pad to a joystick hat, as it was impossible with the previous handling to move with hat-left/right and jump with hat-up at the same time.
This means that diagonal hat buttons can no longer be used in binds, because they are no longer considered distinct buttons. It's unlikely that they would ever be useful in this game, as real joystick POV hats would not be used anyway.
Closes#6120.
Instead of closing the joysticks manually, use `SDL_QuitSubSystem(SDL_INIT_JOYSTICK)` to quit the entire subsystem, which will also close all joysticks correctly.
The engine input destructor is replaced with a `Shutdown` method so we can control when it is called, i.e. before calling `SDL_Quit`, which forcefully quits all subsystems.
`CJoystick::Close` is removed as we don't need to close joysticks manually anymore.
4251: Add inp_translated_keys (fixyes #4241) r=Jupeyy a=def-
fixes#4241
## Checklist
- [x] Tested the change ingame
- [ ] Provided screenshots if it is a visual change
- [ ] Tested in combination with possibly related configuration options
- [ ] Written a unit test if it works standalone, system.c especially
- [ ] 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: Dennis Felsing <dennis@felsin9.de>
4232: Still clear pending mouse motion r=def- a=Jupeyy
Same as #3932 ... again :/
## Checklist
- [x] Tested the change ingame
- [ ] Provided screenshots if it is a visual change
- [ ] Tested in combination with possibly related configuration options
- [ ] Written a unit test if it works standalone, system.c especially
- [ ] 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: Jupeyy <jupjopjap@gmail.com>
