Relative mouse motion

[bvssvni]

This is needed for FPS games.

The old issue was here, but closed because piston-input was considered.

[bvssvni]

From IRC:

fkaa: bvssvni: just checked, deltaX/deltaY works when the mouse is grabbed (CGAssociateMouseAndMouseCursorPosition(false))

[retep998]

From PistonDevelopers/hematite#265

For future reference of anyone who does decide to work on this you use RegisterRawInputDevices to register a device for raw input, and then you receive WM_INPUT messages through the normal message loop.

[LukasKalbertodt]

What is the status of this?

I'm a bit confused that this feature is not implemented in glutin yet. There are quite a few games using this library and quite a few of those need some kind of mouse grabbing with relative motion, I presume 😉

I know that this behavior can be simulated rather easy, but it's a bit of a hack. I also think that most OS-APIs can provide floating point relative movements (instead of being restricted to pixels).

So: any progress on this?

[Limeth]

Any updates on this? I am interested in a solution.
I currently use this piece of code, but as you may imagine, it's kind of buggy. The behavior is inconsistent across different platforms (tested on linux/windows). https://github.com/Limeth/euclider/blob/76bc8d4482bf5e84ef309b32efbdcb0ed7840f08/src/simulation.rs#L242

[bvssvni]

The glutin_window backend to Piston also works around this problem https://github.com/PistonDevelopers/glutin_window/blob/master/src/lib.rs#L216

[tomaka]

Closing for rust-windowing/winit#70