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diff docs/html/guidetimeexamples.html @ 0:74212992fb08

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Initial revision
author Sam Lantinga <slouken@lokigames.com>
date Thu, 26 Apr 2001 16:45:43 +0000
parents
children 55f1f1b3e27d
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+++ b/docs/html/guidetimeexamples.html	Thu Apr 26 16:45:43 2001 +0000
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+<HTML
+><HEAD
+><TITLE
+>Time Examples</TITLE
+><META
+NAME="GENERATOR"
+CONTENT="Modular DocBook HTML Stylesheet Version 1.61
+"><LINK
+REL="HOME"
+TITLE="SDL Library Documentation"
+HREF="index.html"><LINK
+REL="UP"
+TITLE="Examples"
+HREF="guideexamples.html"><LINK
+REL="PREVIOUS"
+TITLE="CDROM Examples"
+HREF="guidecdromexamples.html"><LINK
+REL="NEXT"
+TITLE="SDL Reference"
+HREF="reference.html"></HEAD
+><BODY
+CLASS="SECT1"
+BGCOLOR="#FFF8DC"
+TEXT="#000000"
+LINK="#0000ee"
+VLINK="#551a8b"
+ALINK="#ff0000"
+><DIV
+CLASS="NAVHEADER"
+><TABLE
+WIDTH="100%"
+BORDER="0"
+CELLPADDING="0"
+CELLSPACING="0"
+><TR
+><TH
+COLSPAN="3"
+ALIGN="center"
+>SDL Library Documentation</TH
+></TR
+><TR
+><TD
+WIDTH="10%"
+ALIGN="left"
+VALIGN="bottom"
+><A
+HREF="guidecdromexamples.html"
+>Prev</A
+></TD
+><TD
+WIDTH="80%"
+ALIGN="center"
+VALIGN="bottom"
+>Chapter 4. Examples</TD
+><TD
+WIDTH="10%"
+ALIGN="right"
+VALIGN="bottom"
+><A
+HREF="reference.html"
+>Next</A
+></TD
+></TR
+></TABLE
+><HR
+ALIGN="LEFT"
+WIDTH="100%"></DIV
+><DIV
+CLASS="SECT1"
+><H1
+CLASS="SECT1"
+><A
+NAME="GUIDETIMEEXAMPLES"
+>Time Examples</A
+></H1
+><P
+></P
+><DIV
+CLASS="SECT2"
+><H2
+CLASS="SECT2"
+><A
+NAME="AEN373"
+>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 &#60;= now ) {
+        next_time = now+TICK_INTERVAL;
+        return(0);
+    }
+    return(next_time-now);
+}
+
+
+/* main game loop
+
+    while ( game_running ) {
+        UpdateGameState();
+        SDL_Delay(TimeLeft());
+    }&#13;</PRE
+></P
+></DIV
+></DIV
+><DIV
+CLASS="NAVFOOTER"
+><HR
+ALIGN="LEFT"
+WIDTH="100%"><TABLE
+WIDTH="100%"
+BORDER="0"
+CELLPADDING="0"
+CELLSPACING="0"
+><TR
+><TD
+WIDTH="33%"
+ALIGN="left"
+VALIGN="top"
+><A
+HREF="guidecdromexamples.html"
+>Prev</A
+></TD
+><TD
+WIDTH="34%"
+ALIGN="center"
+VALIGN="top"
+><A
+HREF="index.html"
+>Home</A
+></TD
+><TD
+WIDTH="33%"
+ALIGN="right"
+VALIGN="top"
+><A
+HREF="reference.html"
+>Next</A
+></TD
+></TR
+><TR
+><TD
+WIDTH="33%"
+ALIGN="left"
+VALIGN="top"
+>CDROM Examples</TD
+><TD
+WIDTH="34%"
+ALIGN="center"
+VALIGN="top"
+><A
+HREF="guideexamples.html"
+>Up</A
+></TD
+><TD
+WIDTH="33%"
+ALIGN="right"
+VALIGN="top"
+>SDL Reference</TD
+></TR
+></TABLE
+></DIV
+></BODY
+></HTML
+>
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