Mercurial > sdl-ios-xcode
diff docs/html/guidetimeexamples.html @ 0:74212992fb08
Initial revision
author | Sam Lantinga <slouken@lokigames.com> |
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date | Thu, 26 Apr 2001 16:45:43 +0000 |
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children | 55f1f1b3e27d |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/docs/html/guidetimeexamples.html Thu Apr 26 16:45:43 2001 +0000 @@ -0,0 +1,173 @@ +<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 <= now ) { + next_time = now+TICK_INTERVAL; + return(0); + } + return(next_time-now); +} + + +/* main game loop + + while ( game_running ) { + UpdateGameState(); + SDL_Delay(TimeLeft()); + } </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 +> \ No newline at end of file