161 lines
3.8 KiB
C
161 lines
3.8 KiB
C
/*
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Copyright (C) 1996-2001 Id Software, Inc.
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Copyright (C) 2002-2005 John Fitzgibbons and others
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Copyright (C) 2007-2008 Kristian Duske
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Copyright (C) 2010-2014 QuakeSpasm developers
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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 the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "q_defs.h"
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#include <SDL.h>
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#include <stdio.h>
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/* need at least SDL_2.0.0 */
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#define SDL_MIN_X 2
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#define SDL_MIN_Y 0
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#define SDL_MIN_Z 0
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#define SDL_REQUIREDVERSION (SDL_VERSIONNUM(SDL_MIN_X,SDL_MIN_Y,SDL_MIN_Z))
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#define SDL_NEW_VERSION_REJECT (SDL_VERSIONNUM(3,0,0))
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static void Sys_AtExit(void)
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{
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SDL_Quit();
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}
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static void Sys_InitSDL(void)
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{
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SDL_version v;
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SDL_version *sdl_version = &v;
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SDL_GetVersion(&v);
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Sys_Printf("SDL version %" PRIi32 ".%" PRIi32 ".%" PRIi32 "\n", sdl_version->major, sdl_version->minor, sdl_version->patch);
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if(SDL_VERSIONNUM(sdl_version->major, sdl_version->minor, sdl_version->patch) < SDL_REQUIREDVERSION)
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Sys_Error("Need at least v%" PRIi32 ".%" PRIi32 ".%" PRIi32 " of SDL to run. Exiting.", SDL_MIN_X, SDL_MIN_Y, SDL_MIN_Z);
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if(SDL_VERSIONNUM(sdl_version->major, sdl_version->minor, sdl_version->patch) >= SDL_NEW_VERSION_REJECT)
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Sys_Error("Detected SDL is too new. Exiting.");
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if(SDL_Init(0) < 0)
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Sys_Error("Couldn't init SDL: %s", SDL_GetError());
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atexit(Sys_AtExit);
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}
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#define DEFAULT_MEMORY (256 * 1024 * 1024) // ericw -- was 72MB (64-bit) / 64MB (32-bit)
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static quakeparms_t parms;
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// On OS X we call SDL_main from the launcher, but SDL2 doesn't redefine main
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// as SDL_main on OS X anymore, so we do it ourselves.
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#if PLATFORM_IS(OSX)
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#define main SDL_main
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#endif
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int32_t main(int32_t argc, char *argv[])
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{
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int32_t t;
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double time, oldtime, newtime;
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host_parms = &parms;
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parms.basedir = ".";
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parms.argc = argc;
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parms.argv = argv;
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parms.errstate = 0;
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COM_InitArgv(parms.argc, parms.argv);
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isDedicated = (COM_CheckParm("-dedicated") != 0);
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Sys_InitSDL();
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Sys_Init();
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parms.memsize = DEFAULT_MEMORY;
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if(COM_CheckParm("-heapsize"))
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{
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t = COM_CheckParm("-heapsize") + 1;
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if(t < com_argc)
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parms.memsize = Q_atoi(com_argv[t]) * 1024;
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}
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parms.membase = malloc(parms.memsize);
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if(!parms.membase)
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Sys_Error("Not enough memory free for heap. You need 256MiB.\n");
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Sys_Printf(ENGINE_NAME " " VERSION " (c) id Software, John Fitzgibbons, "
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"SleepwalkR, Baker, Ozkan Sezer, Eric Wasylishen, "
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"Alison Watson, et al.\n");
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Host_Init();
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oldtime = Sys_DoubleTime();
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if(isDedicated)
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{
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while(1)
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{
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newtime = Sys_DoubleTime();
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time = newtime - oldtime;
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while(time < sys_ticrate.value)
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{
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SDL_Delay(1);
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newtime = Sys_DoubleTime();
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time = newtime - oldtime;
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}
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Host_Frame(time);
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oldtime = newtime;
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}
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}
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else
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while(1)
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{
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/* If we have no input focus at all, sleep a bit */
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if(!VID_HasMouseOrInputFocus() || cl.paused)
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{
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SDL_Delay(16);
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}
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/* If we're minimised, sleep a bit more */
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if(VID_IsMinimized())
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{
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scr_skipupdate = 1;
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SDL_Delay(32);
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}
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else
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{
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scr_skipupdate = 0;
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}
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newtime = Sys_DoubleTime();
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time = newtime - oldtime;
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Host_Frame(time);
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if(time < sys_throttle.value && !cls.timedemo)
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SDL_Delay(1);
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oldtime = newtime;
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}
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return 0;
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}
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