mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-10 15:22:04 +00:00
154 lines
3.1 KiB
C
154 lines
3.1 KiB
C
/*
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sys_sdl.c
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(description)
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#ifdef HAVE_FCNTL_H
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# include <fcntl.h>
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#else
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# include <sys/fcntl.h>
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#endif
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#include <SDL.h>
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#include <SDL_main.h>
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#include "QF/cvar.h"
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#include "QF/qargs.h"
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#include "QF/sys.h"
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#include "nq/include/client.h"
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#include "nq/include/host.h"
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#ifdef _WIN32
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# include "winquake.h"
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#endif
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int qf_sdl_link;
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qboolean isDedicated = false;
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static void
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startup (void)
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{
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#ifdef _WIN32
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OSVERSIONINFO vinfo;
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Sys_MaskFPUExceptions ();
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// make sure the timer is high precision, otherwise NT gets 18ms resolution
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timeBeginPeriod (1);
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vinfo.dwOSVersionInfoSize = sizeof (vinfo);
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if (!GetVersionEx (&vinfo))
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Sys_Error ("Couldn't get OS info");
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if ((vinfo.dwMajorVersion < 4)
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|| (vinfo.dwPlatformId == VER_PLATFORM_WIN32s)) {
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Sys_Error ("This version of " PACKAGE_NAME
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" requires at least Win95 or NT 4.0");
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}
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#endif
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}
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static void
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shutdown_f (void *data)
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{
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#ifndef _WIN32
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// change stdin to blocking
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fcntl (0, F_SETFL, fcntl (0, F_GETFL, 0) & ~O_NONBLOCK);
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fflush (stdout);
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#endif
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}
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#ifndef SDL_main
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# define SDL_main main
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#endif
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int
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SDL_main (int argc, char *argv[])
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{
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double time, oldtime, newtime;
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startup ();
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memset (&host_parms, 0, sizeof (host_parms));
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COM_InitArgv (argc, (const char **) argv);
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host_parms.argc = com_argc;
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host_parms.argv = com_argv;
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isDedicated = (COM_CheckParm ("-dedicated") != 0);
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Sys_RegisterShutdown (Host_Shutdown, 0);
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Sys_RegisterShutdown (shutdown_f, 0);
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Host_Init ();
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#ifndef _WIN32
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if (!sys_nostdout->int_val) {
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fcntl (0, F_SETFL, fcntl (0, F_GETFL, 0) | O_NONBLOCK);
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Sys_Printf ("Quake -- Version %s\n", NQ_VERSION);
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}
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#else
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// hack to prevent gcc suggesting noreturn
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if (!sys_nostdout) {
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return 1;
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}
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#endif
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oldtime = Sys_DoubleTime () - 0.1;
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while (1) { // Main message loop
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// find time spent rendering last frame
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newtime = Sys_DoubleTime ();
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time = newtime - oldtime;
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if (cls.state == ca_dedicated) { // play vcrfiles at max speed
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if (time < sys_ticrate->value && (!vcrFile || recording)) {
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usleep (1);
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continue; // not time to run a server-only tic yet
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}
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time = sys_ticrate->value;
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}
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if (time > sys_ticrate->value * 2)
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oldtime = newtime;
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else
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oldtime += time;
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Host_Frame (time);
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}
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}
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