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# Time Examples

## Time based game loop

    #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());
        }

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