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>Chapter 13. Time</H1
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><DT
><A
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>SDL_GetTicks</A
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> -- Get the number of milliseconds since the SDL library initialization.</DT
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><DT
><A
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>SDL_Delay</A
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> -- Wait a specified number of milliseconds before returning.</DT
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><DT
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>SDL_AddTimer</A
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> -- Add a timer which will call a callback after the specified number of milliseconds has
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elapsed.</DT
><DT
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>SDL_RemoveTimer</A
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> -- Remove a timer which was added with
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<A
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>SDL_AddTimer</A
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>SDL_SetTimer</A
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> -- Set a callback to run after the specified number of milliseconds has
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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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