view docs/html/guidetimeexamples.html @ 2096:87256df87837

Merge r2990:2991 from branches/SDL-1.2: try to avoid asm/page.h in fbcon.
author Ryan C. Gordon <icculus@icculus.org>
date Wed, 14 Mar 2007 01:10:43 +0000
parents 355632dca928
children
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<HTML
><HEAD
><TITLE
>Time Examples</TITLE
><META
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CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
"><LINK
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TITLE="SDL Library Documentation"
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><H1
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>Time Examples</H1
><P
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><H2
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><A
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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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