apps/plugins/doom/i_system.c

   1 // Emacs style mode select   -*- C++ -*-
   2 //-----------------------------------------------------------------------------
   3 //
   4 // $Id$
   5 //
   6 // Copyright (C) 1993-1996 by id Software, Inc.
   7 //
   8 // This program is free software; you can redistribute it and/or
   9 // modify it under the terms of the GNU General Public License
  10 // as published by the Free Software Foundation; either version 2
  11 // of the License, or (at your option) any later version.
  12 //
  13 // This program is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17 //
  18 // $Log: i_system.c,v $
  19 // Revision 1.9  2006-04-15 22:08:36  kkurbjun
  20 // Slight code cleanups, fixed sound parameter - now it saves.  Old configurations will be reset.
  21 //
  22 // Revision 1.8  2006-04-14 21:07:55  kkurbjun
  23 // Start of profiling support for doom.
  24 //
  25 // Revision 1.7  2006-04-04 11:16:44  dave
  26 // Correct the #ifdef logic for timer_unregister() and add a comment describing why we need to surround the use of the user timer with #ifdefs
  27 //
  28 // Revision 1.6  2006-04-03 17:32:46  dave
  29 // Clean up the (incorrect) #ifdef spaghetti for the timer.  We now have a user timer on the ipods, so we use it.
  30 //
  31 // Revision 1.5  2006-04-03 17:11:42  kkurbjun
  32 // Finishing touches
  33 //
  34 // Revision 1.4  2006-04-03 17:00:56  dave
  35 // Doom can't use the user timer at the same time as using the grayscale lib.
  36 //
  37 // Revision 1.3  2006-04-02 12:45:29  amiconn
  38 // Use TIMER_FREQ for timers in plugins. Fixes timer speed on iPod.
  39 //
  40 // Revision 1.2  2006-04-02 01:52:44  kkurbjun
  41 // Update adds prboom's high resolution support, also makes the scaling for platforms w/ resolution less then 320x200 much nicer.  IDoom's lookup table code has been removed.  Also fixed a pallete bug.  Some graphic errors are present in menu and status bar.  Also updates some headers and output formatting.
  42 //
  43 // Revision 1.1  2006-03-28 15:44:01  dave
  44 // Patch #2969 - Doom!  Currently only working on the H300.
  45 //
  46 //
  47 // DESCRIPTION:
  48 //
  49 //-----------------------------------------------------------------------------
  50
  51 #include "doomdef.h"
  52 #include "m_misc.h"
  53 #include "i_video.h"
  54 #include "i_sound.h"
  55
  56 #include "d_net.h"
  57 #include "g_game.h"
  58 #include "z_zone.h"
  59
  60 #ifdef __GNUG__
  61 #pragma implementation "i_system.h"
  62 #endif
  63 #include "i_system.h"
  64
  65 #include "rockmacros.h"
  66
  67 //
  68 // I_GetTime
  69 // returns time in 1/70th second tics
  70 //
  71
  72 /* NOTE:
  73
  74    The user timer is used to generate a 70Hz tick for Doom.  But it
  75    is unavailable for the greyscale targets (it's used by the greyscale
  76    lib) and is not implemented in the simulator - so we have to
  77    approximate it using current_tick.
  78 */
  79 #if defined(HAVE_LCD_COLOR) && !defined(SIMULATOR) && !defined(RB_PROFILE)
  80 volatile unsigned int doomtimer=0;
  81
  82 void doomtime(void)
  83 {
  84    doomtimer++;
  85 }
  86 #endif
  87
  88 int  I_GetTime (void)
  89 {
  90 #if defined(HAVE_LCD_COLOR) && !defined(SIMULATOR) && !defined(RB_PROFILE)
  91    return doomtimer;
  92 #else
  93 #if HZ==100
  94    return ((7*(*rb->current_tick))/20);
  95 #else
  96    #error FIX - I assumed HZ was 100
  97 #endif
  98 #endif
  99 }
 100
 101 //
 102 // I_Init
 103 //
 104
 105 // I was looking into this and comparing the speed versus Prboom
 106 // Turns out they are running the game much slower then I thought the game was
 107 // played.  This explains why run was unusable other then through straight stretches
 108 // The game is much slower now (in terms of game speed).
 109 void I_Init (void)
 110 {
 111 #if defined(HAVE_LCD_COLOR) && !defined(SIMULATOR) && !defined(RB_PROFILE)
 112    rb->timer_register(1, NULL, TIMER_FREQ/TICRATE, doomtime IF_COP(, CPU));
 113 #endif
 114    I_InitSound();
 115 }
 116
 117 //
 118 // I_Quit
 119 //
 120
 121 void I_Quit (void)
 122 {
 123    I_ShutdownSound();
 124    I_ShutdownMusic();
 125    I_ShutdownGraphics();
 126 #if defined(HAVE_LCD_COLOR) && !defined(SIMULATOR) && !defined(RB_PROFILE)
 127    rb->timer_unregister();
 128 #endif
 129    doomexit=1;
 130 }
 131
 132 void I_WaitVBL(int count)
 133 {
 134    rb->sleep(count);
 135 }
 136
 137 //
 138 // I_Error
 139 //
 140 extern boolean demorecording;
 141
 142 void I_Error (char *error, ...)
 143 {
 144    char p_buf[50];
 145    va_list ap;
 146
 147    va_start(ap, error);
 148    vsnprintf(p_buf,sizeof(p_buf), error, ap);
 149    va_end(ap);
 150
 151    printf("%s\n",p_buf);
 152
 153    // Shutdown. Here might be other errors.
 154    if (demorecording)
 155       G_CheckDemoStatus();
 156
 157    I_Quit();
 158    rb->sleep(HZ*2);
 159 }