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- /*
- 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.
-
- */
- // sys_win.c -- Win32 system interface code
-
- #include "quakedef.h"
- #include "winquake.h"
- #include "errno.h"
- #include "resource.h"
- #include "conproc.h"
-
- #define MINIMUM_WIN_MEMORY 0x0880000
- #define MAXIMUM_WIN_MEMORY 0x1000000
-
- #define CONSOLE_ERROR_TIMEOUT 60.0 // # of seconds to wait on Sys_Error running
- // dedicated before exiting
- #define PAUSE_SLEEP 50 // sleep time on pause or minimization
- #define NOT_FOCUS_SLEEP 20 // sleep time when not focus
-
- int starttime;
- qboolean ActiveApp, Minimized;
- qboolean WinNT;
-
- static double pfreq;
- static double curtime = 0.0;
- static double lastcurtime = 0.0;
- static int lowshift;
- qboolean isDedicated;
- static qboolean sc_return_on_enter = false;
- HANDLE hinput, houtput;
-
- static char *tracking_tag = "Clams & Mooses";
-
- static HANDLE tevent;
- static HANDLE hFile;
- static HANDLE heventParent;
- static HANDLE heventChild;
-
- void MaskExceptions (void);
- void Sys_InitFloatTime (void);
- void Sys_PushFPCW_SetHigh (void);
- void Sys_PopFPCW (void);
-
- volatile int sys_checksum;
-
-
- /*
- ================
- Sys_PageIn
- ================
- */
- void Sys_PageIn (void *ptr, int size)
- {
- byte *x;
- int j, m, n;
-
- // touch all the memory to make sure it's there. The 16-page skip is to
- // keep Win 95 from thinking we're trying to page ourselves in (we are
- // doing that, of course, but there's no reason we shouldn't)
- x = (byte *)ptr;
-
- for (n=0 ; n<4 ; n++)
- {
- for (m=0 ; m<(size - 16 * 0x1000) ; m += 4)
- {
- sys_checksum += *(int *)&x[m];
- sys_checksum += *(int *)&x[m + 16 * 0x1000];
- }
- }
- }
-
-
- /*
- ===============================================================================
-
- FILE IO
-
- ===============================================================================
- */
-
- #define MAX_HANDLES 10
- FILE *sys_handles[MAX_HANDLES];
-
- int findhandle (void)
- {
- int i;
-
- for (i=1 ; i<MAX_HANDLES ; i++)
- if (!sys_handles[i])
- return i;
- Sys_Error ("out of handles");
- return -1;
- }
-
- /*
- ================
- filelength
- ================
- */
- int filelength (FILE *f)
- {
- int pos;
- int end;
- int t;
-
- t = VID_ForceUnlockedAndReturnState ();
-
- pos = ftell (f);
- fseek (f, 0, SEEK_END);
- end = ftell (f);
- fseek (f, pos, SEEK_SET);
-
- VID_ForceLockState (t);
-
- return end;
- }
-
- int Sys_FileOpenRead (char *path, int *hndl)
- {
- FILE *f;
- int i, retval;
- int t;
-
- t = VID_ForceUnlockedAndReturnState ();
-
- i = findhandle ();
-
- f = fopen(path, "rb");
-
- if (!f)
- {
- *hndl = -1;
- retval = -1;
- }
- else
- {
- sys_handles[i] = f;
- *hndl = i;
- retval = filelength(f);
- }
-
- VID_ForceLockState (t);
-
- return retval;
- }
-
- int Sys_FileOpenWrite (char *path)
- {
- FILE *f;
- int i;
- int t;
-
- t = VID_ForceUnlockedAndReturnState ();
-
- i = findhandle ();
-
- f = fopen(path, "wb");
- if (!f)
- Sys_Error ("Error opening %s: %s", path,strerror(errno));
- sys_handles[i] = f;
-
- VID_ForceLockState (t);
-
- return i;
- }
-
- void Sys_FileClose (int handle)
- {
- int t;
-
- t = VID_ForceUnlockedAndReturnState ();
- fclose (sys_handles[handle]);
- sys_handles[handle] = NULL;
- VID_ForceLockState (t);
- }
-
- void Sys_FileSeek (int handle, int position)
- {
- int t;
-
- t = VID_ForceUnlockedAndReturnState ();
- fseek (sys_handles[handle], position, SEEK_SET);
- VID_ForceLockState (t);
- }
-
- int Sys_FileRead (int handle, void *dest, int count)
- {
- int t, x;
-
- t = VID_ForceUnlockedAndReturnState ();
- x = fread (dest, 1, count, sys_handles[handle]);
- VID_ForceLockState (t);
- return x;
- }
-
- int Sys_FileWrite (int handle, void *data, int count)
- {
- int t, x;
-
- t = VID_ForceUnlockedAndReturnState ();
- x = fwrite (data, 1, count, sys_handles[handle]);
- VID_ForceLockState (t);
- return x;
- }
-
- int Sys_FileTime (char *path)
- {
- FILE *f;
- int t, retval;
-
- t = VID_ForceUnlockedAndReturnState ();
-
- f = fopen(path, "rb");
-
- if (f)
- {
- fclose(f);
- retval = 1;
- }
- else
- {
- retval = -1;
- }
-
- VID_ForceLockState (t);
- return retval;
- }
-
- void Sys_mkdir (char *path)
- {
- _mkdir (path);
- }
-
-
- /*
- ===============================================================================
-
- SYSTEM IO
-
- ===============================================================================
- */
-
- /*
- ================
- Sys_MakeCodeWriteable
- ================
- */
- void Sys_MakeCodeWriteable (unsigned long startaddr, unsigned long length)
- {
- DWORD flOldProtect;
-
- if (!VirtualProtect((LPVOID)startaddr, length, PAGE_READWRITE, &flOldProtect))
- Sys_Error("Protection change failed\n");
- }
-
-
- #ifndef _M_IX86
-
- void Sys_SetFPCW (void)
- {
- }
-
- void Sys_PushFPCW_SetHigh (void)
- {
- }
-
- void Sys_PopFPCW (void)
- {
- }
-
- void MaskExceptions (void)
- {
- }
-
- #endif
-
- /*
- ================
- Sys_Init
- ================
- */
- void Sys_Init (void)
- {
- LARGE_INTEGER PerformanceFreq;
- unsigned int lowpart, highpart;
- OSVERSIONINFO vinfo;
-
- MaskExceptions ();
- Sys_SetFPCW ();
-
- if (!QueryPerformanceFrequency (&PerformanceFreq))
- Sys_Error ("No hardware timer available");
-
- // get 32 out of the 64 time bits such that we have around
- // 1 microsecond resolution
- lowpart = (unsigned int)PerformanceFreq.LowPart;
- highpart = (unsigned int)PerformanceFreq.HighPart;
- lowshift = 0;
-
- while (highpart || (lowpart > 2000000.0))
- {
- lowshift++;
- lowpart >>= 1;
- lowpart |= (highpart & 1) << 31;
- highpart >>= 1;
- }
-
- pfreq = 1.0 / (double)lowpart;
-
- Sys_InitFloatTime ();
-
- vinfo.dwOSVersionInfoSize = sizeof(vinfo);
-
- if (!GetVersionEx (&vinfo))
- Sys_Error ("Couldn't get OS info");
-
- if ((vinfo.dwMajorVersion < 4) ||
- (vinfo.dwPlatformId == VER_PLATFORM_WIN32s))
- {
- Sys_Error ("WinQuake requires at least Win95 or NT 4.0");
- }
-
- if (vinfo.dwPlatformId == VER_PLATFORM_WIN32_NT)
- WinNT = true;
- else
- WinNT = false;
- }
-
-
- void Sys_Error (char *error, ...)
- {
- va_list argptr;
- char text[1024], text2[1024];
- char *text3 = "Press Enter to exit\n";
- char *text4 = "***********************************\n";
- char *text5 = "\n";
- DWORD dummy;
- double starttime;
- static int in_sys_error0 = 0;
- static int in_sys_error1 = 0;
- static int in_sys_error2 = 0;
- static int in_sys_error3 = 0;
-
- if (!in_sys_error3)
- {
- in_sys_error3 = 1;
- VID_ForceUnlockedAndReturnState ();
- }
-
- va_start (argptr, error);
- vsprintf (text, error, argptr);
- va_end (argptr);
-
- if (isDedicated)
- {
- va_start (argptr, error);
- vsprintf (text, error, argptr);
- va_end (argptr);
-
- sprintf (text2, "ERROR: %s\n", text);
- WriteFile (houtput, text5, strlen (text5), &dummy, NULL);
- WriteFile (houtput, text4, strlen (text4), &dummy, NULL);
- WriteFile (houtput, text2, strlen (text2), &dummy, NULL);
- WriteFile (houtput, text3, strlen (text3), &dummy, NULL);
- WriteFile (houtput, text4, strlen (text4), &dummy, NULL);
-
-
- starttime = Sys_FloatTime ();
- sc_return_on_enter = true; // so Enter will get us out of here
-
- while (!Sys_ConsoleInput () &&
- ((Sys_FloatTime () - starttime) < CONSOLE_ERROR_TIMEOUT))
- {
- }
- }
- else
- {
- // switch to windowed so the message box is visible, unless we already
- // tried that and failed
- if (!in_sys_error0)
- {
- in_sys_error0 = 1;
- VID_SetDefaultMode ();
- MessageBox(NULL, text, "Quake Error",
- MB_OK | MB_SETFOREGROUND | MB_ICONSTOP);
- }
- else
- {
- MessageBox(NULL, text, "Double Quake Error",
- MB_OK | MB_SETFOREGROUND | MB_ICONSTOP);
- }
- }
-
- if (!in_sys_error1)
- {
- in_sys_error1 = 1;
- Host_Shutdown ();
- }
-
- // shut down QHOST hooks if necessary
- if (!in_sys_error2)
- {
- in_sys_error2 = 1;
- DeinitConProc ();
- }
-
- exit (1);
- }
-
- void Sys_Printf (char *fmt, ...)
- {
- va_list argptr;
- char text[1024];
- DWORD dummy;
-
- if (isDedicated)
- {
- va_start (argptr,fmt);
- vsprintf (text, fmt, argptr);
- va_end (argptr);
-
- WriteFile(houtput, text, strlen (text), &dummy, NULL);
- }
- }
-
- void Sys_Quit (void)
- {
-
- VID_ForceUnlockedAndReturnState ();
-
- Host_Shutdown();
-
- if (tevent)
- CloseHandle (tevent);
-
- if (isDedicated)
- FreeConsole ();
-
- // shut down QHOST hooks if necessary
- DeinitConProc ();
-
- exit (0);
- }
-
-
- /*
- ================
- Sys_FloatTime
- ================
- */
- double Sys_FloatTime (void)
- {
- static int sametimecount;
- static unsigned int oldtime;
- static int first = 1;
- LARGE_INTEGER PerformanceCount;
- unsigned int temp, t2;
- double time;
-
- Sys_PushFPCW_SetHigh ();
-
- QueryPerformanceCounter (&PerformanceCount);
-
- temp = ((unsigned int)PerformanceCount.LowPart >> lowshift) |
- ((unsigned int)PerformanceCount.HighPart << (32 - lowshift));
-
- if (first)
- {
- oldtime = temp;
- first = 0;
- }
- else
- {
- // check for turnover or backward time
- if ((temp <= oldtime) && ((oldtime - temp) < 0x10000000))
- {
- oldtime = temp; // so we can't get stuck
- }
- else
- {
- t2 = temp - oldtime;
-
- time = (double)t2 * pfreq;
- oldtime = temp;
-
- curtime += time;
-
- if (curtime == lastcurtime)
- {
- sametimecount++;
-
- if (sametimecount > 100000)
- {
- curtime += 1.0;
- sametimecount = 0;
- }
- }
- else
- {
- sametimecount = 0;
- }
-
- lastcurtime = curtime;
- }
- }
-
- Sys_PopFPCW ();
-
- return curtime;
- }
-
-
- /*
- ================
- Sys_InitFloatTime
- ================
- */
- void Sys_InitFloatTime (void)
- {
- int j;
-
- Sys_FloatTime ();
-
- j = COM_CheckParm("-starttime");
-
- if (j)
- {
- curtime = (double) (Q_atof(com_argv[j+1]));
- }
- else
- {
- curtime = 0.0;
- }
-
- lastcurtime = curtime;
- }
-
-
- char *Sys_ConsoleInput (void)
- {
- static char text[256];
- static int len;
- INPUT_RECORD recs[1024];
- int count;
- int i, dummy;
- int ch, numread, numevents;
-
- if (!isDedicated)
- return NULL;
-
-
- for ( ;; )
- {
- if (!GetNumberOfConsoleInputEvents (hinput, &numevents))
- Sys_Error ("Error getting # of console events");
-
- if (numevents <= 0)
- break;
-
- if (!ReadConsoleInput(hinput, recs, 1, &numread))
- Sys_Error ("Error reading console input");
-
- if (numread != 1)
- Sys_Error ("Couldn't read console input");
-
- if (recs[0].EventType == KEY_EVENT)
- {
- if (!recs[0].Event.KeyEvent.bKeyDown)
- {
- ch = recs[0].Event.KeyEvent.uChar.AsciiChar;
-
- switch (ch)
- {
- case '\r':
- WriteFile(houtput, "\r\n", 2, &dummy, NULL);
-
- if (len)
- {
- text[len] = 0;
- len = 0;
- return text;
- }
- else if (sc_return_on_enter)
- {
- // special case to allow exiting from the error handler on Enter
- text[0] = '\r';
- len = 0;
- return text;
- }
-
- break;
-
- case '\b':
- WriteFile(houtput, "\b \b", 3, &dummy, NULL);
- if (len)
- {
- len--;
- }
- break;
-
- default:
- if (ch >= ' ')
- {
- WriteFile(houtput, &ch, 1, &dummy, NULL);
- text[len] = ch;
- len = (len + 1) & 0xff;
- }
-
- break;
-
- }
- }
- }
- }
-
- return NULL;
- }
-
- void Sys_Sleep (void)
- {
- Sleep (1);
- }
-
-
- void Sys_SendKeyEvents (void)
- {
- MSG msg;
-
- while (PeekMessage (&msg, NULL, 0, 0, PM_NOREMOVE))
- {
- // we always update if there are any event, even if we're paused
- scr_skipupdate = 0;
-
- if (!GetMessage (&msg, NULL, 0, 0))
- Sys_Quit ();
-
- TranslateMessage (&msg);
- DispatchMessage (&msg);
- }
- }
-
-
- /*
- ==============================================================================
-
- WINDOWS CRAP
-
- ==============================================================================
- */
-
-
- /*
- ==================
- WinMain
- ==================
- */
- void SleepUntilInput (int time)
- {
-
- MsgWaitForMultipleObjects(1, &tevent, FALSE, time, QS_ALLINPUT);
- }
-
-
- /*
- ==================
- WinMain
- ==================
- */
- HINSTANCE global_hInstance;
- int global_nCmdShow;
- char *argv[MAX_NUM_ARGVS];
- static char *empty_string = "";
- HWND hwnd_dialog;
-
-
- int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
- {
- MSG msg;
- quakeparms_t parms;
- double time, oldtime, newtime;
- MEMORYSTATUS lpBuffer;
- static char cwd[1024];
- int t;
- RECT rect;
-
- /* previous instances do not exist in Win32 */
- if (hPrevInstance)
- return 0;
-
- global_hInstance = hInstance;
- global_nCmdShow = nCmdShow;
-
- lpBuffer.dwLength = sizeof(MEMORYSTATUS);
- GlobalMemoryStatus (&lpBuffer);
-
- if (!GetCurrentDirectory (sizeof(cwd), cwd))
- Sys_Error ("Couldn't determine current directory");
-
- if (cwd[Q_strlen(cwd)-1] == '/')
- cwd[Q_strlen(cwd)-1] = 0;
-
- parms.basedir = cwd;
- parms.cachedir = NULL;
-
- parms.argc = 1;
- argv[0] = empty_string;
-
- while (*lpCmdLine && (parms.argc < MAX_NUM_ARGVS))
- {
- while (*lpCmdLine && ((*lpCmdLine <= 32) || (*lpCmdLine > 126)))
- lpCmdLine++;
-
- if (*lpCmdLine)
- {
- argv[parms.argc] = lpCmdLine;
- parms.argc++;
-
- while (*lpCmdLine && ((*lpCmdLine > 32) && (*lpCmdLine <= 126)))
- lpCmdLine++;
-
- if (*lpCmdLine)
- {
- *lpCmdLine = 0;
- lpCmdLine++;
- }
-
- }
- }
-
- parms.argv = argv;
-
- COM_InitArgv (parms.argc, parms.argv);
-
- parms.argc = com_argc;
- parms.argv = com_argv;
-
- isDedicated = (COM_CheckParm ("-dedicated") != 0);
-
- if (!isDedicated)
- {
- hwnd_dialog = CreateDialog(hInstance, MAKEINTRESOURCE(IDD_DIALOG1), NULL, NULL);
-
- if (hwnd_dialog)
- {
- if (GetWindowRect (hwnd_dialog, &rect))
- {
- if (rect.left > (rect.top * 2))
- {
- SetWindowPos (hwnd_dialog, 0,
- (rect.left / 2) - ((rect.right - rect.left) / 2),
- rect.top, 0, 0,
- SWP_NOZORDER | SWP_NOSIZE);
- }
- }
-
- ShowWindow (hwnd_dialog, SW_SHOWDEFAULT);
- UpdateWindow (hwnd_dialog);
- SetForegroundWindow (hwnd_dialog);
- }
- }
-
- // take the greater of all the available memory or half the total memory,
- // but at least 8 Mb and no more than 16 Mb, unless they explicitly
- // request otherwise
- parms.memsize = lpBuffer.dwAvailPhys;
-
- if (parms.memsize < MINIMUM_WIN_MEMORY)
- parms.memsize = MINIMUM_WIN_MEMORY;
-
- if (parms.memsize < (lpBuffer.dwTotalPhys >> 1))
- parms.memsize = lpBuffer.dwTotalPhys >> 1;
-
- if (parms.memsize > MAXIMUM_WIN_MEMORY)
- parms.memsize = MAXIMUM_WIN_MEMORY;
-
- if (COM_CheckParm ("-heapsize"))
- {
- t = COM_CheckParm("-heapsize") + 1;
-
- if (t < com_argc)
- parms.memsize = Q_atoi (com_argv[t]) * 1024;
- }
-
- parms.membase = malloc (parms.memsize);
-
- if (!parms.membase)
- Sys_Error ("Not enough memory free; check disk space\n");
-
- Sys_PageIn (parms.membase, parms.memsize);
-
- tevent = CreateEvent(NULL, FALSE, FALSE, NULL);
-
- if (!tevent)
- Sys_Error ("Couldn't create event");
-
- if (isDedicated)
- {
- if (!AllocConsole ())
- {
- Sys_Error ("Couldn't create dedicated server console");
- }
-
- hinput = GetStdHandle (STD_INPUT_HANDLE);
- houtput = GetStdHandle (STD_OUTPUT_HANDLE);
-
- // give QHOST a chance to hook into the console
- if ((t = COM_CheckParm ("-HFILE")) > 0)
- {
- if (t < com_argc)
- hFile = (HANDLE)Q_atoi (com_argv[t+1]);
- }
-
- if ((t = COM_CheckParm ("-HPARENT")) > 0)
- {
- if (t < com_argc)
- heventParent = (HANDLE)Q_atoi (com_argv[t+1]);
- }
-
- if ((t = COM_CheckParm ("-HCHILD")) > 0)
- {
- if (t < com_argc)
- heventChild = (HANDLE)Q_atoi (com_argv[t+1]);
- }
-
- InitConProc (hFile, heventParent, heventChild);
- }
-
- Sys_Init ();
-
- // because sound is off until we become active
- S_BlockSound ();
-
- Sys_Printf ("Host_Init\n");
- Host_Init (&parms);
-
- oldtime = Sys_FloatTime ();
-
- /* main window message loop */
- while (1)
- {
- if (isDedicated)
- {
- newtime = Sys_FloatTime ();
- time = newtime - oldtime;
-
- while (time < sys_ticrate.value )
- {
- Sys_Sleep();
- newtime = Sys_FloatTime ();
- time = newtime - oldtime;
- }
- }
- else
- {
- // yield the CPU for a little while when paused, minimized, or not the focus
- if ((cl.paused && (!ActiveApp && !DDActive)) || Minimized || block_drawing)
- {
- SleepUntilInput (PAUSE_SLEEP);
- scr_skipupdate = 1; // no point in bothering to draw
- }
- else if (!ActiveApp && !DDActive)
- {
- SleepUntilInput (NOT_FOCUS_SLEEP);
- }
-
- newtime = Sys_FloatTime ();
- time = newtime - oldtime;
- }
-
- Host_Frame (time);
- oldtime = newtime;
- }
-
- /* return success of application */
- return TRUE;
- }
-
-