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| >Time Examples</A |
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| ><H2 |
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| ><A |
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| >Time based game loop</A |
| ></H2 |
| ><P |
| ><PRE |
| CLASS="PROGRAMLISTING" |
| >#define TICK_INTERVAL 30 |
| |
| Uint32 TimeLeft(void) |
| { |
| static Uint32 next_time = 0; |
| Uint32 now; |
| |
| now = SDL_GetTicks(); |
| if ( next_time <= now ) { |
| next_time = now+TICK_INTERVAL; |
| return(0); |
| } |
| return(next_time-now); |
| } |
| |
| |
| /* main game loop |
| |
| while ( game_running ) { |
| UpdateGameState(); |
| SDL_Delay(TimeLeft()); |
| } </PRE |
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