Mercurial > sdl-ios-xcode
annotate docs/html/guidetimeexamples.html @ 641:df178851293b
Date: 28 Jun 2003 22:42:52 +0100
From: Alan Swanson
Subject: Re: [SDL] New XFree 4.3 Video Mode Patch
I have a wee amendment that moves the qsort in set_best_resolution
to only occur after failing to find an exact match only. This would
make absolutely sure we get a user set mode.
While I've never had any problems for my normal resolutions (1280x1024,
1024x768, 800x600 & 640,480) while closely examining the output from
qsort I've noticed it doesn't seem to sort the modes fully. These is
one definite wrong at 1152x768 and a few that just look wrong to me.
From a program (attached) I made to examine this more easily. X has
sorted its mode list using the same method as ours (plus frequency),
and our user modes get inserted without any other movement.
On the patch I've made I've also changed cmpmodes to sort on vertical
resolution and then horizontal. Ie vertical is now most significant
bit.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 28 Jun 2003 21:52:26 +0000 |
| parents | e5bc29de3f0a |
| children | 355632dca928 |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >Time Examples</TITLE | |
| 5 ><META | |
| 6 NAME="GENERATOR" | |
|
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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 | |
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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 | |
|
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91 static Uint32 next_time; |
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92 |
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93 Uint32 time_left(void) |
| 0 | 94 { |
| 95 Uint32 now; | |
| 96 | |
| 97 now = SDL_GetTicks(); | |
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98 if(next_time <= now) |
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99 return 0; |
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100 else |
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101 return next_time - now; |
| 0 | 102 } |
| 103 | |
| 104 | |
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105 /* main game loop */ |
| 0 | 106 |
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107 next_time = SDL_GetTicks() + TICK_INTERVAL; |
| 0 | 108 while ( game_running ) { |
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109 update_game_state(); |
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110 SDL_Delay(time_left()); |
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111 next_time += TICK_INTERVAL; |
| 0 | 112 } </PRE |
| 113 ></P | |
| 114 ></DIV | |
| 115 ></DIV | |
| 116 ><DIV | |
| 117 CLASS="NAVFOOTER" | |
| 118 ><HR | |
| 119 ALIGN="LEFT" | |
| 120 WIDTH="100%"><TABLE | |
| 121 WIDTH="100%" | |
| 122 BORDER="0" | |
| 123 CELLPADDING="0" | |
| 124 CELLSPACING="0" | |
| 125 ><TR | |
| 126 ><TD | |
| 127 WIDTH="33%" | |
| 128 ALIGN="left" | |
| 129 VALIGN="top" | |
| 130 ><A | |
| 131 HREF="guidecdromexamples.html" | |
| 132 >Prev</A | |
| 133 ></TD | |
| 134 ><TD | |
| 135 WIDTH="34%" | |
| 136 ALIGN="center" | |
| 137 VALIGN="top" | |
| 138 ><A | |
| 139 HREF="index.html" | |
| 140 >Home</A | |
| 141 ></TD | |
| 142 ><TD | |
| 143 WIDTH="33%" | |
| 144 ALIGN="right" | |
| 145 VALIGN="top" | |
| 146 ><A | |
| 147 HREF="reference.html" | |
| 148 >Next</A | |
| 149 ></TD | |
| 150 ></TR | |
| 151 ><TR | |
| 152 ><TD | |
| 153 WIDTH="33%" | |
| 154 ALIGN="left" | |
| 155 VALIGN="top" | |
| 156 >CDROM Examples</TD | |
| 157 ><TD | |
| 158 WIDTH="34%" | |
| 159 ALIGN="center" | |
| 160 VALIGN="top" | |
| 161 ><A | |
| 162 HREF="guideexamples.html" | |
| 163 >Up</A | |
| 164 ></TD | |
| 165 ><TD | |
| 166 WIDTH="33%" | |
| 167 ALIGN="right" | |
| 168 VALIGN="top" | |
| 169 >SDL Reference</TD | |
| 170 ></TR | |
| 171 ></TABLE | |
| 172 ></DIV | |
| 173 ></BODY | |
| 174 ></HTML | |
| 175 > |