Mercurial > sdl-ios-xcode
annotate docs/html/guidetimeexamples.html @ 136:717f739d6ec1
Added hardware stretching code to scale 640x480 to TV resolution
There's a bug of some kind in the 16bpp code. ??
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Wed, 01 Aug 2001 08:41:45 +0000 |
| parents | 55f1f1b3e27d |
| children | e5bc29de3f0a |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >Time Examples</TITLE | |
| 5 ><META | |
| 6 NAME="GENERATOR" | |
|
55
55f1f1b3e27d
Added new docs for SDL 1.2.1
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
7 CONTENT="Modular DocBook HTML Stylesheet Version 1.64 |
| 0 | 8 "><LINK |
| 9 REL="HOME" | |
| 10 TITLE="SDL Library Documentation" | |
| 11 HREF="index.html"><LINK | |
| 12 REL="UP" | |
| 13 TITLE="Examples" | |
| 14 HREF="guideexamples.html"><LINK | |
| 15 REL="PREVIOUS" | |
| 16 TITLE="CDROM Examples" | |
| 17 HREF="guidecdromexamples.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="SDL Reference" | |
| 20 HREF="reference.html"></HEAD | |
| 21 ><BODY | |
| 22 CLASS="SECT1" | |
| 23 BGCOLOR="#FFF8DC" | |
| 24 TEXT="#000000" | |
| 25 LINK="#0000ee" | |
| 26 VLINK="#551a8b" | |
| 27 ALINK="#ff0000" | |
| 28 ><DIV | |
| 29 CLASS="NAVHEADER" | |
| 30 ><TABLE | |
| 31 WIDTH="100%" | |
| 32 BORDER="0" | |
| 33 CELLPADDING="0" | |
| 34 CELLSPACING="0" | |
| 35 ><TR | |
| 36 ><TH | |
| 37 COLSPAN="3" | |
| 38 ALIGN="center" | |
| 39 >SDL Library Documentation</TH | |
| 40 ></TR | |
| 41 ><TR | |
| 42 ><TD | |
| 43 WIDTH="10%" | |
| 44 ALIGN="left" | |
| 45 VALIGN="bottom" | |
| 46 ><A | |
| 47 HREF="guidecdromexamples.html" | |
| 48 >Prev</A | |
| 49 ></TD | |
| 50 ><TD | |
| 51 WIDTH="80%" | |
| 52 ALIGN="center" | |
| 53 VALIGN="bottom" | |
| 54 >Chapter 4. Examples</TD | |
| 55 ><TD | |
| 56 WIDTH="10%" | |
| 57 ALIGN="right" | |
| 58 VALIGN="bottom" | |
| 59 ><A | |
| 60 HREF="reference.html" | |
| 61 >Next</A | |
| 62 ></TD | |
| 63 ></TR | |
| 64 ></TABLE | |
| 65 ><HR | |
| 66 ALIGN="LEFT" | |
| 67 WIDTH="100%"></DIV | |
| 68 ><DIV | |
| 69 CLASS="SECT1" | |
| 70 ><H1 | |
| 71 CLASS="SECT1" | |
| 72 ><A | |
| 73 NAME="GUIDETIMEEXAMPLES" | |
| 74 >Time Examples</A | |
| 75 ></H1 | |
| 76 ><P | |
| 77 ></P | |
| 78 ><DIV | |
| 79 CLASS="SECT2" | |
| 80 ><H2 | |
| 81 CLASS="SECT2" | |
| 82 ><A | |
|
55
55f1f1b3e27d
Added new docs for SDL 1.2.1
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
83 NAME="AEN412" |
| 0 | 84 >Time based game loop</A |
| 85 ></H2 | |
| 86 ><P | |
| 87 ><PRE | |
| 88 CLASS="PROGRAMLISTING" | |
| 89 >#define TICK_INTERVAL 30 | |
| 90 | |
| 91 Uint32 TimeLeft(void) | |
| 92 { | |
| 93 static Uint32 next_time = 0; | |
| 94 Uint32 now; | |
| 95 | |
| 96 now = SDL_GetTicks(); | |
| 97 if ( next_time <= now ) { | |
| 98 next_time = now+TICK_INTERVAL; | |
| 99 return(0); | |
| 100 } | |
| 101 return(next_time-now); | |
| 102 } | |
| 103 | |
| 104 | |
| 105 /* main game loop | |
| 106 | |
| 107 while ( game_running ) { | |
| 108 UpdateGameState(); | |
| 109 SDL_Delay(TimeLeft()); | |
| 110 } </PRE | |
| 111 ></P | |
| 112 ></DIV | |
| 113 ></DIV | |
| 114 ><DIV | |
| 115 CLASS="NAVFOOTER" | |
| 116 ><HR | |
| 117 ALIGN="LEFT" | |
| 118 WIDTH="100%"><TABLE | |
| 119 WIDTH="100%" | |
| 120 BORDER="0" | |
| 121 CELLPADDING="0" | |
| 122 CELLSPACING="0" | |
| 123 ><TR | |
| 124 ><TD | |
| 125 WIDTH="33%" | |
| 126 ALIGN="left" | |
| 127 VALIGN="top" | |
| 128 ><A | |
| 129 HREF="guidecdromexamples.html" | |
| 130 >Prev</A | |
| 131 ></TD | |
| 132 ><TD | |
| 133 WIDTH="34%" | |
| 134 ALIGN="center" | |
| 135 VALIGN="top" | |
| 136 ><A | |
| 137 HREF="index.html" | |
| 138 >Home</A | |
| 139 ></TD | |
| 140 ><TD | |
| 141 WIDTH="33%" | |
| 142 ALIGN="right" | |
| 143 VALIGN="top" | |
| 144 ><A | |
| 145 HREF="reference.html" | |
| 146 >Next</A | |
| 147 ></TD | |
| 148 ></TR | |
| 149 ><TR | |
| 150 ><TD | |
| 151 WIDTH="33%" | |
| 152 ALIGN="left" | |
| 153 VALIGN="top" | |
| 154 >CDROM Examples</TD | |
| 155 ><TD | |
| 156 WIDTH="34%" | |
| 157 ALIGN="center" | |
| 158 VALIGN="top" | |
| 159 ><A | |
| 160 HREF="guideexamples.html" | |
| 161 >Up</A | |
| 162 ></TD | |
| 163 ><TD | |
| 164 WIDTH="33%" | |
| 165 ALIGN="right" | |
| 166 VALIGN="top" | |
| 167 >SDL Reference</TD | |
| 168 ></TR | |
| 169 ></TABLE | |
| 170 ></DIV | |
| 171 ></BODY | |
| 172 ></HTML | |
| 173 > |