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