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Re: [pygame] Re: Problem with mouse going back to the center of the screen



Are you sure that it's not working as designed? Did you check how sdl does it? Don't throw the b word around lightly, people will think you're a wolf-crier.

Sent from my iPhone

On Jul 21, 2010, at 11:03 AM, SurferIX <olivier.pons@xxxxxxxxx> wrote:

> You can clearly see it if you add this code in the event handler:
> 
> 293                 elif event.key == K_a:
> 294                     pygame.mouse.set_visible(False)
> 295                 elif event.key == K_z:
> 296                     pygame.mouse.set_visible(True)
> 
> At the very beginning i do pygame.event.set_grab(False)
> then if you try to press key z to show the mouse, then mouse it, press
> a to hide it: you'll see the "virtual input" mode is activated.
> I'm pretty sure this is a bogue.
> Please tell me if you can reproduce it under Linux, thanks a lot!
> 
> 
> Olivier Pons
> 
> On 21 juil, 17:39, SurferIX <olivier.p...@xxxxxxxxx> wrote:
>> Ok you were right.
>> Here is the summary: with Linux:
>> 
>> pygame.event.set_grab()
>> pygame.mouse.set_visible() :
>> 
>> grab => False, visible => False => "virtual input" mode
>> grab => True, visible => False => "virtual input" mode
>> 
>> grab => False, visible => True => normal mode
>> grab => True, visible => True => normal mode
>> 
>> So as long as the mouse is not visible, it's considered "virtual
>> input" mode
>> I'm pretty sure this is a bug.
>> I hope someone will try this my code under Linux and tell me if it's
>> the same problem or not.
>> 
>> You cant get the whole sourcecode here:http://olivierpons.com/einstein.tar.bz2
>> 
>> By the way, Enigma (the only fullscreen SDL game I've tested under
>> Linux) has exactly the same problem.
>> 
>> On 21 juil, 05:36, Brian Fisher <br...@xxxxxxxxxxxxxxxxxxx> wrote:
>> 
>> 
>> 
>>> The only time I know of where that maybe is supposed to happen, is when the
>>> mouse is both grabbed by the window, and invisible. SDL takes that to mean
>>> you want "virtual input" mode, where the mouse is moved back to the center
>>> so you can keep getting relative mouse movement infinitely in all
>>> directions, so it can behave like a trackball. This is documented here:http://www.pygame.org/docs/ref/mouse.html
>> 
>>> If this is your case. and relative mouse movement is fine, try using the
>>> mouse event's .rel member instead of it's .pos member, or using
>>> pygame.mouse.get_rel instead of .get_pos
>> 
>>> if this is your case, but virtual input is not desireable, reconsider
>>> whether pygame.event.set_grab(true) and pygame.mouse.set_visible(false) are
>>> actually functions you want to call.
>> 
>>> if this is not your case, it's a bug, and a minimal sample to reproduce
>>> would be appreciated.
>> 
>>> On Tue, Jul 20, 2010 at 2:32 PM, SurferIX <olivier.p...@xxxxxxxxx> wrote:
>>>> Hi!
>> 
>>>> I've got a problem with the mouse: it's going back to the center of
>>>> the screen!
>>>> I don't know where it could come from because it does this only in
>>>> full screen.
>>>> It's exactly the same problem with the game Enigma.
>> 
>>>> It seems there's a problem either with SDL or with my computer. But if
>>>> it's with my computer why only in full screen?
>>>> Did you have any trouble like that?
>>>> Thanks a lot!