Initial revision

source/sys_unix.c

@@ -0,0 +1,283 @@
+/*
+Copyright (C) 1996-1997 Id Software, Inc.
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  
+
+See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+*/
+#include <sys/types.h>
+#include "qwsvdef.h"
+
+#ifdef NeXT
+#include <libc.h>
+#endif
+
+#if defined(__linux__) || defined(sun)
+#include <sys/stat.h>
+#include <unistd.h>
+#include <sys/time.h>
+#include <errno.h>
+#else
+#include <sys/dir.h>
+#endif
+
+cvar_t	sys_nostdout = {"sys_nostdout","0"};
+cvar_t	sys_extrasleep = {"sys_extrasleep","0"};
+
+qboolean	stdin_ready;
+
+/*
+===============================================================================
+
+				REQUIRED SYS FUNCTIONS
+
+===============================================================================
+*/
+
+/*
+============
+Sys_FileTime
+
+returns -1 if not present
+============
+*/
+int	Sys_FileTime (char *path)
+{
+	struct	stat	buf;
+	
+	if (stat (path,&buf) == -1)
+		return -1;
+	
+	return buf.st_mtime;
+}
+
+
+/*
+============
+Sys_mkdir
+
+============
+*/
+void Sys_mkdir (char *path)
+{
+	if (mkdir (path, 0777) != -1)
+		return;
+	if (errno != EEXIST)
+		Sys_Error ("mkdir %s: %s",path, strerror(errno)); 
+}
+
+
+/*
+================
+Sys_DoubleTime
+================
+*/
+double Sys_DoubleTime (void)
+{
+	struct timeval tp;
+	struct timezone tzp;
+	static int		secbase;
+
+	gettimeofday(&tp, &tzp);
+	
+	if (!secbase)
+	{
+		secbase = tp.tv_sec;
+		return tp.tv_usec/1000000.0;
+	}
+	
+	return (tp.tv_sec - secbase) + tp.tv_usec/1000000.0;
+}
+
+/*
+================
+Sys_Error
+================
+*/
+void Sys_Error (char *error, ...)
+{
+	va_list		argptr;
+	char		string[1024];
+	
+	va_start (argptr,error);
+	vsprintf (string,error,argptr);
+	va_end (argptr);
+	printf ("Fatal error: %s\n",string);
+	
+	exit (1);
+}
+
+/*
+================
+Sys_Printf
+================
+*/
+void Sys_Printf (char *fmt, ...)
+{
+	va_list		argptr;
+	static char		text[2048];
+	unsigned char		*p;
+
+	va_start (argptr,fmt);
+	vsprintf (text,fmt,argptr);
+	va_end (argptr);
+
+	if (strlen(text) > sizeof(text))
+		Sys_Error("memory overwrite in Sys_Printf");
+
+    if (sys_nostdout.value)
+        return;
+
+	for (p = (unsigned char *)text; *p; p++) {
+		*p &= 0x7f;
+		if ((*p > 128 || *p < 32) && *p != 10 && *p != 13 && *p != 9)
+			printf("[%02x]", *p);
+		else
+			putc(*p, stdout);
+	}
+	fflush(stdout);
+}
+
+
+/*
+================
+Sys_Quit
+================
+*/
+void Sys_Quit (void)
+{
+	exit (0);		// appkit isn't running
+}
+
+static int do_stdin = 1;
+
+/*
+================
+Sys_ConsoleInput
+
+Checks for a complete line of text typed in at the console, then forwards
+it to the host command processor
+================
+*/
+char *Sys_ConsoleInput (void)
+{
+	static char	text[256];
+	int		len;
+
+	if (!stdin_ready || !do_stdin)
+		return NULL;		// the select didn't say it was ready
+	stdin_ready = false;
+
+	len = read (0, text, sizeof(text));
+	if (len == 0) {
+		// end of file
+		do_stdin = 0;
+		return NULL;
+	}
+	if (len < 1)
+		return NULL;
+	text[len-1] = 0;	// rip off the /n and terminate
+	
+	return text;
+}
+
+/*
+=============
+Sys_Init
+
+Quake calls this so the system can register variables before host_hunklevel
+is marked
+=============
+*/
+void Sys_Init (void)
+{
+	Cvar_RegisterVariable (&sys_nostdout);
+	Cvar_RegisterVariable (&sys_extrasleep);
+}
+
+/*
+=============
+main
+=============
+*/
+void main(int argc, char *argv[])
+{
+	double			time, oldtime, newtime;
+	quakeparms_t	parms;
+	fd_set	fdset;
+	extern	int		net_socket;
+    struct timeval timeout;
+	int j;
+
+	memset (&parms, 0, sizeof(parms));
+
+	COM_InitArgv (argc, argv);	
+	parms.argc = com_argc;
+	parms.argv = com_argv;
+
+	parms.memsize = 16*1024*1024;
+
+	j = COM_CheckParm("-mem");
+	if (j)
+		parms.memsize = (int) (Q_atof(com_argv[j+1]) * 1024 * 1024);
+	if ((parms.membase = malloc (parms.memsize)) == NULL)
+		Sys_Error("Can't allocate %ld\n", parms.memsize);
+
+	parms.basedir = ".";
+
+/*
+	if (Sys_FileTime ("id1/pak0.pak") != -1)
+	else
+		parms.basedir = "/raid/quake/v2";
+*/
+
+	SV_Init (&parms);
+
+// run one frame immediately for first heartbeat
+	SV_Frame (0.1);		
+
+//
+// main loop
+//
+	oldtime = Sys_DoubleTime () - 0.1;
+	while (1)
+	{
+	// select on the net socket and stdin
+	// the only reason we have a timeout at all is so that if the last
+	// connected client times out, the message would not otherwise
+	// be printed until the next event.
+		FD_ZERO(&fdset);
+		if (do_stdin)
+			FD_SET(0, &fdset);
+		FD_SET(net_socket, &fdset);
+		timeout.tv_sec = 1;
+		timeout.tv_usec = 0;
+		if (select (net_socket+1, &fdset, NULL, NULL, &timeout) == -1)
+			continue;
+		stdin_ready = FD_ISSET(0, &fdset);
+
+	// find time passed since last cycle
+		newtime = Sys_DoubleTime ();
+		time = newtime - oldtime;
+		oldtime = newtime;
+		
+		SV_Frame (time);		
+		
+	// extrasleep is just a way to generate a fucked up connection on purpose
+		if (sys_extrasleep.value)
+			usleep (sys_extrasleep.value);
+	}	
+}
+