mirror of
https://github.com/blendogames/thirtyflightsofloving.git
synced 2024-11-15 00:41:21 +00:00
455 lines
9.4 KiB
C
455 lines
9.4 KiB
C
/*
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===========================================================================
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Copyright (C) 1997-2001 Id Software, Inc.
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This file is part of Quake 2 source code.
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Quake 2 source code is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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Quake 2 source code is distributed in the hope that it will be
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useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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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 Quake 2 source code; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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===========================================================================
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*/
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#include <unistd.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <limits.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <sys/ipc.h>
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#include <sys/shm.h>
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#include <sys/stat.h>
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#include <string.h>
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#include <ctype.h>
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#include <sys/wait.h>
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#include <sys/mman.h>
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#include <errno.h>
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#ifdef __linux__
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#include <mntent.h>
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#endif
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#include <dlfcn.h>
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#include "../qcommon/qcommon.h"
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cvar_t *nostdout;
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unsigned sys_frame_time;
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uid_t saved_euid;
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qboolean stdin_active = true;
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int ActiveApp;
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// Knightmare- added exe / pref dirs
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static char exe_dir[MAX_OSPATH];
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static char pref_dir[MAX_OSPATH];
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static char download_dir[MAX_OSPATH];
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// =======================================================================
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// General routines
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// =======================================================================
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void Sys_ConsoleOutput (char *string)
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{
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if (nostdout && nostdout->value)
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return;
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fputs(string, stdout);
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}
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void Sys_Sleep (int msec)
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{
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if (msec < 0) return;
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usleep ((unsigned int)msec * 1000);
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}
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unsigned Sys_TickCount (void)
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{
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return clock();
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}
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void Sys_Printf (char *fmt, ...)
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{
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va_list argptr;
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char text[1024];
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unsigned char *p;
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va_start (argptr, fmt);
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// vsprintf (text, fmt, argptr);
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Q_vsnprintf (text, sizeof(text), fmt, argptr);
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va_end (argptr);
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if (strlen(text) > sizeof(text))
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Sys_Error("memory overwrite in Sys_Printf");
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if (nostdout && nostdout->value)
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return;
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for (p = (unsigned char *)text; *p; p++) {
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*p &= 0x7f;
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if ((*p > 128 || *p < 32) && *p != 10 && *p != 13 && *p != 9)
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printf("[%02x]", *p);
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else
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putc(*p, stdout);
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}
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}
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void Sys_Quit (void)
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{
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CL_Shutdown ();
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Qcommon_Shutdown ();
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fcntl (0, F_SETFL, fcntl (0, F_GETFL, 0) & ~FNDELAY);
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_exit(0);
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}
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void Sys_Init(void)
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{
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#if id386
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// Sys_SetFPCW();
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#endif
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}
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void Sys_Error (char *error, ...)
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{
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va_list argptr;
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char string[1024];
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// change stdin to non blocking
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fcntl (0, F_SETFL, fcntl (0, F_GETFL, 0) & ~FNDELAY);
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CL_Shutdown ();
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Qcommon_Shutdown ();
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va_start (argptr, error);
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// vsprintf (string, error, argptr);
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Q_vsnprintf (string, sizeof(string), error, argptr);
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va_end (argptr);
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fprintf(stderr, "Error: %s\n", string);
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_exit (1);
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}
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void Sys_Warn (char *warning, ...)
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{
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va_list argptr;
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char string[1024];
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va_start (argptr, warning);
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// vsprintf (string, warning, argptr);
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Q_vsnprintf (string, sizeof(string), warning, argptr);
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va_end (argptr);
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fprintf(stderr, "Warning: %s", string);
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}
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/*
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============
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Sys_FileTime
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returns -1 if not present
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============
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*/
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int Sys_FileTime (char *path)
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{
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struct stat buf;
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if (stat (path,&buf) == -1)
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return -1;
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return buf.st_mtime;
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}
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void floating_point_exception_handler(int whatever)
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{
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// Sys_Warn("floating point exception\n");
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signal(SIGFPE, floating_point_exception_handler);
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}
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char *Sys_ConsoleInput(void)
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{
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static char text[256];
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int len;
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fd_set fdset;
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struct timeval timeout;
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if (!dedicated || !dedicated->value)
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return NULL;
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if (!stdin_active)
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return NULL;
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FD_ZERO(&fdset);
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FD_SET(0, &fdset); // stdin
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timeout.tv_sec = 0;
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timeout.tv_usec = 0;
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if (select (1, &fdset, NULL, NULL, &timeout) == -1 || !FD_ISSET(0, &fdset))
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return NULL;
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len = read (0, text, sizeof(text));
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if (len == 0) { // eof!
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stdin_active = false;
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return NULL;
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}
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if (len < 1)
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return NULL;
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text[len-1] = 0; // rip off the /n and terminate
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return text;
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}
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// Knightmare added
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void Sys_ShowConsole (qboolean show)
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{
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}
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/*****************************************************************************/
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static void *game_library;
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/*
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=================
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Sys_UnloadGame
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=================
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*/
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void Sys_UnloadGame (void)
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{
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if (game_library)
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dlclose (game_library);
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game_library = NULL;
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}
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/*
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=================
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Sys_GetGameAPI
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Loads the game dll
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=================
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*/
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void *Sys_GetGameAPI (void *parms)
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{
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void *(*GetGameAPI) (void *);
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char name[MAX_OSPATH];
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char curpath[MAX_OSPATH];
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char *path;
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// Knightmare- changed game library name for better cohabitation
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#ifdef __i386__
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const char *gamename = "kmq2gamei386.so";
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#elif defined __alpha__
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const char *gamename = "kmq2gameaxp.so";
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#elif defined __x86_64__
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const char *gamename = "kmq2gamex86_64.so";
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#elif defined __powerpc__
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const char *gamename = "kmq2gameppc.so";
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#elif defined __sparc__
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const char *gamename = "kmq2gamesparc.so";
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#else
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#error Unknown arch
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#endif
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setreuid(getuid(), getuid());
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setegid(getgid());
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if (game_library)
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Com_Error (ERR_FATAL, "Sys_GetGameAPI without Sys_UnloadingGame");
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getcwd(curpath, sizeof(curpath));
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Com_Printf("------- Loading %s -------\n", gamename);
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// now run through the search paths
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path = NULL;
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while (1)
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{
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path = FS_NextPath (path);
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if (!path)
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return NULL; // couldn't find one anywhere
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sprintf (name, "%s/%s/%s", curpath, path, gamename);
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game_library = dlopen (name, RTLD_LAZY );
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if (game_library)
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{
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Com_Printf ("LoadLibrary (%s)\n",name);
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break;
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}
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}
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GetGameAPI = (void *)dlsym (game_library, "GetGameAPI");
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if (!GetGameAPI)
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{
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Sys_UnloadGame ();
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return NULL;
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}
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return GetGameAPI (parms);
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}
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/*****************************************************************************/
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void Sys_AppActivate (void)
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{
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}
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void HandleEvents(void);
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void Sys_SendKeyEvents (void)
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{
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#ifndef DEDICATED_ONLY
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HandleEvents();
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#endif
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// grab frame time
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sys_frame_time = Sys_Milliseconds();
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}
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/*****************************************************************************/
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// Knightmare- adapted from DK 1.3 Linux port
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const char* Sys_ExeDir(void)
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{
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return exe_dir;
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}
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const char* Sys_PrefDir(void)
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{
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return pref_dir;
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}
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const char* Sys_DownloadDir(void)
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{
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return download_dir;
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}
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static void Init_ExeDir (const char* argv0)
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{
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#if 1
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memset(exe_dir, 0, sizeof(exe_dir));
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Q_snprintfz(exe_dir, sizeof(exe_dir), ".");
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#else
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char buf[MAX_OSPATH] = {0};
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const char *lastSlash;
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static int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1};
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size_t buflen;
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size_t len = lastSlash ? (lastSlash - buf) : 0;
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memset(exe_dir, 0, sizeof(exe_dir));
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#ifdef __linux__
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readlink("/proc/self/exe", buf, MAX_OSPATH-1);
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#elif __FreeBSD__
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sysctl(mib, sizeof(mib)/sizeof(*mib), buf, &buflen, NULL, 0);
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#endif
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if (!*buf)
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{
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printf("WARNING: Couldn't get path to executable, reading from argv[0]!\n");
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if (strlen(argv0) < sizeof(buf))
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{
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Q_strncpyz(buf, sizeof(buf), argv0);
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}
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else
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{
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buf[0] = '\0';
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}
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}
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// starting at the last slash the executable name begins - we only want the path up to there
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lastSlash = strrchr(buf, '/');
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len = lastSlash ? (lastSlash - buf) : 0;
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if (lastSlash == NULL || len >= sizeof(exe_dir) || len == 0)
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{
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printf("WARNING: Couldn't get path to executable! Defaulting to \".\"!\n");
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Q_snprintfz(exe_dir, sizeof(exe_dir), ".");
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}
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else
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{
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memcpy(exe_dir, buf, len);
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}
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#endif
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}
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static void Sys_InitPrefDir (void)
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{
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char *pp = getenv("XDG_DATA_HOME");
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memset(pref_dir, 0, sizeof(pref_dir));
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if (pp == NULL)
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{
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Q_snprintfz(pref_dir, sizeof(pref_dir), "%s/.local/share/Daikatana", getenv("HOME"));
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return;
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}
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if (strlen(pp) >= sizeof(pref_dir) - 1)
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{
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printf("WARNING: $XDG_DATA_HOME contains a too long path, defaulting to installation dir!\n");
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Q_strncpyz(pref_dir, sizeof(pref_dir), exe_dir);
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Q_strncpyz (download_dir, sizeof(download_dir), exe_dir);
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return;
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}
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Q_strncpyz (pref_dir, sizeof(pref_dir), pp);
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Q_strncpyz (download_dir, sizeof(download_dir), pp);
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}
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// end Knightmare
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/*****************************************************************************/
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int main (int argc, char **argv)
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{
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int time, oldtime, newtime;
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// go back to real user for config loads
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saved_euid = geteuid();
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seteuid(getuid());
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printf ("\n");
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printf ("========= Initialization =================\n");
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printf ("KMQuake2 -- Version 0.20\n");
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printf ("Linux Port by QuDos\n");
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printf ("http://qudos.quakedev.com/\n");
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printf ("Compiled: "__DATE__" -- "__TIME__"\n");
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printf ("==========================================\n\n");
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// Knightmare- init exe/pref dirs
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Init_ExeDir(argv[0]);
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Sys_InitPrefDir();
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Qcommon_Init(argc, argv);
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fcntl(0, F_SETFL, fcntl (0, F_GETFL, 0) | FNDELAY);
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nostdout = Cvar_Get("nostdout", "0", 0);
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if (!nostdout->value) {
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fcntl(0, F_SETFL, fcntl (0, F_GETFL, 0) | FNDELAY);
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// printf ("Linux Quake II -- Version %0.3f\n", KMQUAKE2_VERSION);
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}
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oldtime = Sys_Milliseconds ();
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while (1)
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{
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// find time spent rendering last frame
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do {
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newtime = Sys_Milliseconds ();
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time = newtime - oldtime;
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} while (time < 1);
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Qcommon_Frame (time);
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oldtime = newtime;
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}
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}
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