Re: [AD] Using system mouse cursor

[Chris <kcat@xxxxxxxxxx>]

Evert Glebbeek wrote:
> > I did, however, completely rebuild AllegroGL (since that's what my 
> > program uses) and it cleared up some of the problems, but the mouse 
> > still seems to be eratic when reentering the game window. It'll stutter 
> > around, sometimes fixing itself after a few moments and other times not.
>
> Are you using the mickeys at all? Or just with reading the mouse position 
> and displaying it on the screen?

I've used the mickeys function directly and I've tried just 
repositioning the mouse and getting the difference myself. They both 
have stuttering problems, though the mickeys function moreso.

> I think this makes sense for windowed mode at least. I'd like the mouse to 
> have two modes: a mickey mode and a normal mode. Mickey mode disables the 
> hardware cursor and re-enables the mouse warping.

I'm not sure if we can do this. Unless you want to create a function 
that explicitly locks the cursor to the middle of the program window and 
still allows movement reporting. If that's the case, then we'd still 
remove the warping hack as it exists now and let the get_mouse_mickeys 
function have undefined behavior at the window's edge.

> > PS. BTW, what would happen if a program tracked the mouse via 
> > get_mouse_mickeys and drew it manually? Like if they want to implement 
> > some kind of mouse smoothing feature (like many FPSs do nowadays). 
> > AFAICS, the mouse would enter "mickey mode" and then get stuck in one 
> > spot. The warp hack assumes the user won't be calling get_mouse_mickeys 
> > if they're drawing it manually.
>
> The mouse_x and mouse_y variables (positioning Allegro's mouse) continue to 
> be updated normally. I'm not sure if that's what you meant?

I wasn't fully aware it did that, but it would still behave differently. 
Under such circumstances, the mouse would not be able to leave the 
program window unless there was a fast mouse jerk so that it moves out 
of the window before Allegro catches it again, because "mickey mode" has 
the OS cursor locked in place.

- Kitty Cat