The DOOM sources as originally released on December 23, 1997

linuxdoom-1.10/i_system.c

@@ -0,0 +1,183 @@
+// Emacs style mode select   -*- C++ -*- 
+//-----------------------------------------------------------------------------
+//
+// $Id:$
+//
+// Copyright (C) 1993-1996 by id Software, Inc.
+//
+// This source is available for distribution and/or modification
+// only under the terms of the DOOM Source Code License as
+// published by id Software. All rights reserved.
+//
+// The source is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
+// for more details.
+//
+// $Log:$
+//
+// DESCRIPTION:
+//
+//-----------------------------------------------------------------------------
+
+static const char
+rcsid[] = "$Id: m_bbox.c,v 1.1 1997/02/03 22:45:10 b1 Exp $";
+
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <stdarg.h>
+#include <sys/time.h>
+#include <unistd.h>
+
+#include "doomdef.h"
+#include "m_misc.h"
+#include "i_video.h"
+#include "i_sound.h"
+
+#include "d_net.h"
+#include "g_game.h"
+
+#ifdef __GNUG__
+#pragma implementation "i_system.h"
+#endif
+#include "i_system.h"
+
+
+
+
+int	mb_used = 6;
+
+
+void
+I_Tactile
+( int	on,
+  int	off,
+  int	total )
+{
+  // UNUSED.
+  on = off = total = 0;
+}
+
+ticcmd_t	emptycmd;
+ticcmd_t*	I_BaseTiccmd(void)
+{
+    return &emptycmd;
+}
+
+
+int  I_GetHeapSize (void)
+{
+    return mb_used*1024*1024;
+}
+
+byte* I_ZoneBase (int*	size)
+{
+    *size = mb_used*1024*1024;
+    return (byte *) malloc (*size);
+}
+
+
+
+//
+// I_GetTime
+// returns time in 1/70th second tics
+//
+int  I_GetTime (void)
+{
+    struct timeval	tp;
+    struct timezone	tzp;
+    int			newtics;
+    static int		basetime=0;
+  
+    gettimeofday(&tp, &tzp);
+    if (!basetime)
+	basetime = tp.tv_sec;
+    newtics = (tp.tv_sec-basetime)*TICRATE + tp.tv_usec*TICRATE/1000000;
+    return newtics;
+}
+
+
+
+//
+// I_Init
+//
+void I_Init (void)
+{
+    I_InitSound();
+    //  I_InitGraphics();
+}
+
+//
+// I_Quit
+//
+void I_Quit (void)
+{
+    D_QuitNetGame ();
+    I_ShutdownSound();
+    I_ShutdownMusic();
+    M_SaveDefaults ();
+    I_ShutdownGraphics();
+    exit(0);
+}
+
+void I_WaitVBL(int count)
+{
+#ifdef SGI
+    sginap(1);                                           
+#else
+#ifdef SUN
+    sleep(0);
+#else
+    usleep (count * (1000000/70) );                                
+#endif
+#endif
+}
+
+void I_BeginRead(void)
+{
+}
+
+void I_EndRead(void)
+{
+}
+
+byte*	I_AllocLow(int length)
+{
+    byte*	mem;
+        
+    mem = (byte *)malloc (length);
+    memset (mem,0,length);
+    return mem;
+}
+
+
+//
+// I_Error
+//
+extern boolean demorecording;
+
+void I_Error (char *error, ...)
+{
+    va_list	argptr;
+
+    // Message first.
+    va_start (argptr,error);
+    fprintf (stderr, "Error: ");
+    vfprintf (stderr,error,argptr);
+    fprintf (stderr, "\n");
+    va_end (argptr);
+
+    fflush( stderr );
+
+    // Shutdown. Here might be other errors.
+    if (demorecording)
+	G_CheckDemoStatus();
+
+    D_QuitNetGame ();
+    I_ShutdownGraphics();
+    
+    exit(-1);
+}