view docs/html/time.html @ 1200:8f418dce02b2

Date: Sun, 11 Dec 2005 20:37:04 +0100 From: Olivier Boudeville <olivier.boudeville@online.fr> To: "A list for developers using the SDL library. \(includes SDL-announce\)" <sdl@libsdl.org> Subject: [SDL] NetBSD build patch Hi everybody, apparently the SDL-1.2.9 source archive could not compile "as is" on NetBSD 2.0_STABLE due to a pthread detection issue in the configure script. I attached a small patch that can be applied to configure.in so that SDL can be directly (i.e. without the NetBSD package manager) configured and built successfully on NetBSD (at least on the one I tried !). Hope this helps, Olivier.
author Ryan C. Gordon <icculus@icculus.org>
date Mon, 12 Dec 2005 09:22:36 +0000
parents 355632dca928
children
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>Chapter 13. Time</H1
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><DT
><A
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>SDL_GetTicks</A
>&nbsp;--&nbsp;Get the number of milliseconds since the SDL library initialization.</DT
><DT
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>SDL_Delay</A
>&nbsp;--&nbsp;Wait a specified number of milliseconds before returning.</DT
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>SDL_AddTimer</A
>&nbsp;--&nbsp;Add a timer which will call a callback after the specified number of milliseconds has
elapsed.</DT
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>SDL_RemoveTimer</A
>&nbsp;--&nbsp;Remove a timer which was added with
<A
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>SDL_AddTimer</A
>.</DT
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>SDL_SetTimer</A
>&nbsp;--&nbsp;Set a callback to run after the specified number of milliseconds has
elapsed.</DT
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>SDL provides several cross-platform functions for dealing with time.
It provides a way to get the current time, a way to wait a little while,
and a simple timer mechanism.  These functions give you two ways of moving an
object every x milliseconds:

<P
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>Use a timer callback function.  This may have the bad effect that it runs in a seperate thread or uses alarm signals, but it's easier to implement.</P
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>Or you can get the number of milliseconds passed, and move the object if, for example, 30 ms passed.</P
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