Re: [pygame] Weird problem

[Lionel Barret de Nazaris <lionel.bdn@xxxxxxx>]

Kai Kuehne wrote:
> Hi Luke,
>
>
> On 10/14/06, Luke Paireepinart <rabidpoobear@xxxxxxxxx> wrote:
> > [Documentation]
> > HTH,
> > -Luke
>
> Not really. Ok, maybe I'm a bit tired but I try to explain the real
> problem I'm currently have (primarily in thinking, well could be also
> time-related ;).
> My real problem is how to move something slow and another thing
> really fast if I set - let's say - the frame rate to 30. For the 
> slow-thing
> I could move it 1 pixel per frame. Ok, works great. And the fast-thing 
> could
> be moved 3 pixels per frame but than it looks not very cool. It's lagging
> and you see the movement-steps. And what if the slow-thing is too 
> fast, though?
> I cannot set the speed to 0.5 because pygame.Rect uses integers for the
> position things.
>
> Probably (well, surely probably) this is a noob question. But atm,
> I'm not getting to it...
>
> Thanks
> Kai
Part of the solution is to use speeds related to time instead of speeds 
related to frame rate.
This way your objects could go as slow as they want whatever the frame 
rate is.
AFAIK, If you want to have smooth movement, you need to code all your 
position and speed in float, that means using your own Rect module and 
using OpenGL or a lib that use it (see the pygame site).

Hope that helps,
L.