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view docs/html/guidetimeexamples.html @ 2419:ab89ff6e97af gsoc2008_iphone

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Originally keyboard support was in the form of a category of the class SDL_uikitview. It turns out this can cause problems with compilation where the code is not actually included and doesn't fail until dynamic dispatch. This is just awful, so I've moved to the code into the SDL_uikitview class itself.
author Holmes Futrell <hfutrell@umail.ucsb.edu>
date Wed, 13 Aug 2008 23:14:36 +0000
parents 355632dca928
children
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<HTML
><HEAD
><TITLE
>Time Examples</TITLE
><META
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>Time Examples</H1
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>Time based game loop</H2
><P
><PRE
CLASS="PROGRAMLISTING"
>#define TICK_INTERVAL    30

static Uint32 next_time;

Uint32 time_left(void)
{
    Uint32 now;

    now = SDL_GetTicks();
    if(next_time &#60;= 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;
    }&#13;</PRE
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