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-rw-r--r--src/heretic/i_ibm.c4450
1 files changed, 2246 insertions, 2204 deletions
diff --git a/src/heretic/i_ibm.c b/src/heretic/i_ibm.c
index 566624be..2bceb7b0 100644
--- a/src/heretic/i_ibm.c
+++ b/src/heretic/i_ibm.c
@@ -1,2204 +1,2246 @@
-
-// I_IBM.C
-
-#include <dos.h>
-#include <conio.h>
-#include <stdlib.h>
-#include <stdarg.h>
-#include <graph.h>
-#include "DoomDef.h"
-#include "R_local.h"
-#include "sounds.h"
-#include "i_sound.h"
-#include "dmx.h"
-
-// Macros
-
-#define DPMI_INT 0x31
-//#define NOKBD
-//#define NOTIMER
-
-// Public Data
-
-int DisplayTicker = 0;
-
-// Code
-
-void main(int argc, char **argv)
-{
- myargc = argc;
- myargv = argv;
- D_DoomMain();
-}
-
-void I_StartupNet (void);
-void I_ShutdownNet (void);
-void I_ReadExternDriver(void);
-
-typedef struct
-{
- unsigned edi, esi, ebp, reserved, ebx, edx, ecx, eax;
- unsigned short flags, es, ds, fs, gs, ip, cs, sp, ss;
-} dpmiregs_t;
-
-extern dpmiregs_t dpmiregs;
-
-void I_ReadMouse (void);
-void I_InitDiskFlash (void);
-
-extern int usemouse, usejoystick;
-
-extern void **lumpcache;
-
-/*
-===============================================================================
-
- MUSIC & SFX API
-
-===============================================================================
-*/
-
-static channel_t channel[MAX_CHANNELS];
-
-static int rs; //the current registered song.
-int mus_song = -1;
-int mus_lumpnum;
-void *mus_sndptr;
-byte *soundCurve;
-
-extern sfxinfo_t S_sfx[];
-extern musicinfo_t S_music[];
-
-extern int snd_DesiredMusicDevice;
-extern int snd_DesiredSfxDevice;
-extern int snd_MaxVolume;
-extern int snd_MusicVolume;
-extern int snd_Channels;
-
-extern int startepisode;
-extern int startmap;
-
-int AmbChan;
-
-void S_Start(void)
-{
- int i;
-
- S_StartSong((gameepisode-1)*9 + gamemap-1, true);
-
- //stop all sounds
- for(i=0; i < snd_Channels; i++)
- {
- if(channel[i].handle)
- {
- S_StopSound(channel[i].mo);
- }
- }
- memset(channel, 0, 8*sizeof(channel_t));
-}
-
-void S_StartSong(int song, boolean loop)
-{
- if(song == mus_song)
- { // don't replay an old song
- return;
- }
- if(rs)
- {
- I_StopSong(rs);
- I_UnRegisterSong(rs);
- Z_ChangeTag(lumpcache[mus_lumpnum], PU_CACHE);
- #ifdef __WATCOMC__
- _dpmi_unlockregion(mus_sndptr, lumpinfo[mus_lumpnum].size);
- #endif
- }
- if(song < mus_e1m1 || song > NUMMUSIC)
- {
- return;
- }
- mus_lumpnum = W_GetNumForName(S_music[song].name);
- mus_sndptr = W_CacheLumpNum(mus_lumpnum, PU_MUSIC);
- #ifdef __WATCOMC__
- _dpmi_lockregion(mus_sndptr, lumpinfo[mus_lumpnum].size);
- #endif
- rs = I_RegisterSong(mus_sndptr);
- I_PlaySong(rs, loop); //'true' denotes endless looping.
- mus_song = song;
-}
-
-void S_StartSound(mobj_t *origin, int sound_id)
-{
- int dist, vol;
- int i;
- int sound;
- int priority;
- int sep;
- int angle;
- int absx;
- int absy;
-
- static int sndcount = 0;
- int chan;
-
- if(sound_id==0 || snd_MaxVolume == 0)
- return;
- if(origin == NULL)
- {
- origin = players[consoleplayer].mo;
- }
-
-// calculate the distance before other stuff so that we can throw out
-// sounds that are beyond the hearing range.
- absx = abs(origin->x-players[consoleplayer].mo->x);
- absy = abs(origin->y-players[consoleplayer].mo->y);
- dist = absx+absy-(absx > absy ? absy>>1 : absx>>1);
- dist >>= FRACBITS;
-// dist = P_AproxDistance(origin->x-viewx, origin->y-viewy)>>FRACBITS;
-
- if(dist >= MAX_SND_DIST)
- {
-// dist = MAX_SND_DIST - 1;
- return; //sound is beyond the hearing range...
- }
- if(dist < 0)
- {
- dist = 0;
- }
- priority = S_sfx[sound_id].priority;
- priority *= (10 - (dist/160));
- if(!S_StopSoundID(sound_id, priority))
- {
- return; // other sounds have greater priority
- }
- for(i=0; i<snd_Channels; i++)
- {
- if(origin->player)
- {
- i = snd_Channels;
- break; // let the player have more than one sound.
- }
- if(origin == channel[i].mo)
- { // only allow other mobjs one sound
- S_StopSound(channel[i].mo);
- break;
- }
- }
- if(i >= snd_Channels)
- {
- if(sound_id >= sfx_wind)
- {
- if(AmbChan != -1 && S_sfx[sound_id].priority <=
- S_sfx[channel[AmbChan].sound_id].priority)
- {
- return; //ambient channel already in use
- }
- else
- {
- AmbChan = -1;
- }
- }
- for(i=0; i<snd_Channels; i++)
- {
- if(channel[i].mo == NULL)
- {
- break;
- }
- }
- if(i >= snd_Channels)
- {
- //look for a lower priority sound to replace.
- sndcount++;
- if(sndcount >= snd_Channels)
- {
- sndcount = 0;
- }
- for(chan=0; chan < snd_Channels; chan++)
- {
- i = (sndcount+chan)%snd_Channels;
- if(priority >= channel[i].priority)
- {
- chan = -1; //denote that sound should be replaced.
- break;
- }
- }
- if(chan != -1)
- {
- return; //no free channels.
- }
- else //replace the lower priority sound.
- {
- if(channel[i].handle)
- {
- if(I_SoundIsPlaying(channel[i].handle))
- {
- I_StopSound(channel[i].handle);
- }
- if(S_sfx[channel[i].sound_id].usefulness > 0)
- {
- S_sfx[channel[i].sound_id].usefulness--;
- }
-
- if(AmbChan == i)
- {
- AmbChan = -1;
- }
- }
- }
- }
- }
- if(S_sfx[sound_id].lumpnum == 0)
- {
- S_sfx[sound_id].lumpnum = I_GetSfxLumpNum(&S_sfx[sound_id]);
- }
- if(S_sfx[sound_id].snd_ptr == NULL)
- {
- S_sfx[sound_id].snd_ptr = W_CacheLumpNum(S_sfx[sound_id].lumpnum,
- PU_SOUND);
- #ifdef __WATCOMC__
- _dpmi_lockregion(S_sfx[sound_id].snd_ptr,
- lumpinfo[S_sfx[sound_id].lumpnum].size);
- #endif
- }
-
- // calculate the volume based upon the distance from the sound origin.
-// vol = (snd_MaxVolume*16 + dist*(-snd_MaxVolume*16)/MAX_SND_DIST)>>9;
- vol = soundCurve[dist];
-
- if(origin == players[consoleplayer].mo)
- {
- sep = 128;
- }
- else
- {
- angle = R_PointToAngle2(players[consoleplayer].mo->x,
- players[consoleplayer].mo->y, channel[i].mo->x, channel[i].mo->y);
- angle = (angle-viewangle)>>24;
- sep = angle*2-128;
- if(sep < 64)
- sep = -sep;
- if(sep > 192)
- sep = 512-sep;
- }
-
- channel[i].pitch = (byte)(127+(M_Random()&7)-(M_Random()&7));
- channel[i].handle = I_StartSound(sound_id, S_sfx[sound_id].snd_ptr, vol, sep, channel[i].pitch, 0);
- channel[i].mo = origin;
- channel[i].sound_id = sound_id;
- channel[i].priority = priority;
- if(sound_id >= sfx_wind)
- {
- AmbChan = i;
- }
- if(S_sfx[sound_id].usefulness == -1)
- {
- S_sfx[sound_id].usefulness = 1;
- }
- else
- {
- S_sfx[sound_id].usefulness++;
- }
-}
-
-void S_StartSoundAtVolume(mobj_t *origin, int sound_id, int volume)
-{
- int dist;
- int i;
- int sep;
-
- static int sndcount;
- int chan;
-
- if(sound_id == 0 || snd_MaxVolume == 0)
- return;
- if(origin == NULL)
- {
- origin = players[consoleplayer].mo;
- }
-
- if(volume == 0)
- {
- return;
- }
- volume = (volume*(snd_MaxVolume+1)*8)>>7;
-
-// no priority checking, as ambient sounds would be the LOWEST.
- for(i=0; i<snd_Channels; i++)
- {
- if(channel[i].mo == NULL)
- {
- break;
- }
- }
- if(i >= snd_Channels)
- {
- return;
- }
- if(S_sfx[sound_id].lumpnum == 0)
- {
- S_sfx[sound_id].lumpnum = I_GetSfxLumpNum(&S_sfx[sound_id]);
- }
- if(S_sfx[sound_id].snd_ptr == NULL)
- {
- S_sfx[sound_id].snd_ptr = W_CacheLumpNum(S_sfx[sound_id].lumpnum,
- PU_SOUND);
- #ifdef __WATCOMC__
- _dpmi_lockregion(S_sfx[sound_id].snd_ptr,
- lumpinfo[S_sfx[sound_id].lumpnum].size);
- #endif
- }
- channel[i].pitch = (byte)(127-(M_Random()&3)+(M_Random()&3));
- channel[i].handle = I_StartSound(sound_id, S_sfx[sound_id].snd_ptr, volume, 128, channel[i].pitch, 0);
- channel[i].mo = origin;
- channel[i].sound_id = sound_id;
- channel[i].priority = 1; //super low priority.
- if(S_sfx[sound_id].usefulness == -1)
- {
- S_sfx[sound_id].usefulness = 1;
- }
- else
- {
- S_sfx[sound_id].usefulness++;
- }
-}
-
-boolean S_StopSoundID(int sound_id, int priority)
-{
- int i;
- int lp; //least priority
- int found;
-
- if(S_sfx[sound_id].numchannels == -1)
- {
- return(true);
- }
- lp = -1; //denote the argument sound_id
- found = 0;
- for(i=0; i<snd_Channels; i++)
- {
- if(channel[i].sound_id == sound_id && channel[i].mo)
- {
- found++; //found one. Now, should we replace it??
- if(priority >= channel[i].priority)
- { // if we're gonna kill one, then this'll be it
- lp = i;
- priority = channel[i].priority;
- }
- }
- }
- if(found < S_sfx[sound_id].numchannels)
- {
- return(true);
- }
- else if(lp == -1)
- {
- return(false); // don't replace any sounds
- }
- if(channel[lp].handle)
- {
- if(I_SoundIsPlaying(channel[lp].handle))
- {
- I_StopSound(channel[lp].handle);
- }
- if(S_sfx[channel[i].sound_id].usefulness > 0)
- {
- S_sfx[channel[i].sound_id].usefulness--;
- }
- channel[lp].mo = NULL;
- }
- return(true);
-}
-
-void S_StopSound(mobj_t *origin)
-{
- int i;
-
- for(i=0;i<snd_Channels;i++)
- {
- if(channel[i].mo == origin)
- {
- I_StopSound(channel[i].handle);
- if(S_sfx[channel[i].sound_id].usefulness > 0)
- {
- S_sfx[channel[i].sound_id].usefulness--;
- }
- channel[i].handle = 0;
- channel[i].mo = NULL;
- if(AmbChan == i)
- {
- AmbChan = -1;
- }
- }
- }
-}
-
-void S_SoundLink(mobj_t *oldactor, mobj_t *newactor)
-{
- int i;
-
- for(i=0;i<snd_Channels;i++)
- {
- if(channel[i].mo == oldactor)
- channel[i].mo = newactor;
- }
-}
-
-void S_PauseSound(void)
-{
- I_PauseSong(rs);
-}
-
-void S_ResumeSound(void)
-{
- I_ResumeSong(rs);
-}
-
-static int nextcleanup;
-
-void S_UpdateSounds(mobj_t *listener)
-{
- int i, dist, vol;
- int angle;
- int sep;
- int priority;
- int absx;
- int absy;
-
- listener = players[consoleplayer].mo;
- if(snd_MaxVolume == 0)
- {
- return;
- }
- if(nextcleanup < gametic)
- {
- for(i=0; i < NUMSFX; i++)
- {
- if(S_sfx[i].usefulness == 0 && S_sfx[i].snd_ptr)
- {
- if(lumpcache[S_sfx[i].lumpnum])
- {
- if(((memblock_t *)((byte *)(lumpcache[S_sfx[i].lumpnum])-
- sizeof(memblock_t)))->id == 0x1d4a11)
- { // taken directly from the Z_ChangeTag macro
- Z_ChangeTag2(lumpcache[S_sfx[i].lumpnum], PU_CACHE);
- #ifdef __WATCOMC__
- _dpmi_unlockregion(S_sfx[i].snd_ptr, lumpinfo[S_sfx[i].lumpnum].size);
- #endif
- }
- }
- S_sfx[i].usefulness = -1;
- S_sfx[i].snd_ptr = NULL;
- }
- }
- nextcleanup = gametic+35; //CLEANUP DEBUG cleans every second
- }
- for(i=0;i<snd_Channels;i++)
- {
- if(!channel[i].handle || S_sfx[channel[i].sound_id].usefulness == -1)
- {
- continue;
- }
- if(!I_SoundIsPlaying(channel[i].handle))
- {
- if(S_sfx[channel[i].sound_id].usefulness > 0)
- {
- S_sfx[channel[i].sound_id].usefulness--;
- }
- channel[i].handle = 0;
- channel[i].mo = NULL;
- channel[i].sound_id = 0;
- if(AmbChan == i)
- {
- AmbChan = -1;
- }
- }
- if(channel[i].mo == NULL || channel[i].sound_id == 0
- || channel[i].mo == players[consoleplayer].mo)
- {
- continue;
- }
- else
- {
- absx = abs(channel[i].mo->x-players[consoleplayer].mo->x);
- absy = abs(channel[i].mo->y-players[consoleplayer].mo->y);
- dist = absx+absy-(absx > absy ? absy>>1 : absx>>1);
- dist >>= FRACBITS;
-// dist = P_AproxDistance(channel[i].mo->x-listener->x, channel[i].mo->y-listener->y)>>FRACBITS;
-
- if(dist >= MAX_SND_DIST)
- {
- S_StopSound(channel[i].mo);
- continue;
- }
- if(dist < 0)
- dist = 0;
-
-// calculate the volume based upon the distance from the sound origin.
-// vol = (*((byte *)W_CacheLumpName("SNDCURVE", PU_CACHE)+dist)*(snd_MaxVolume*8))>>7;
- vol = soundCurve[dist];
-
- angle = R_PointToAngle2(players[consoleplayer].mo->x,
- players[consoleplayer].mo->y, channel[i].mo->x, channel[i].mo->y);
- angle = (angle-viewangle)>>24;
- sep = angle*2-128;
- if(sep < 64)
- sep = -sep;
- if(sep > 192)
- sep = 512-sep;
- I_UpdateSoundParams(channel[i].handle, vol, sep, channel[i].pitch);
- priority = S_sfx[channel[i].sound_id].priority;
- priority *= (10 - (dist>>8));
- channel[i].priority = priority;
- }
- }
-}
-
-void S_Init(void)
-{
- soundCurve = Z_Malloc(MAX_SND_DIST, PU_STATIC, NULL);
- I_StartupSound();
- if(snd_Channels > 8)
- {
- snd_Channels = 8;
- }
- I_SetChannels(snd_Channels);
- I_SetMusicVolume(snd_MusicVolume);
- S_SetMaxVolume(true);
-}
-
-void S_GetChannelInfo(SoundInfo_t *s)
-{
- int i;
- ChanInfo_t *c;
-
- s->channelCount = snd_Channels;
- s->musicVolume = snd_MusicVolume;
- s->soundVolume = snd_MaxVolume;
- for(i = 0; i < snd_Channels; i++)
- {
- c = &s->chan[i];
- c->id = channel[i].sound_id;
- c->priority = channel[i].priority;
- c->name = S_sfx[c->id].name;
- c->mo = channel[i].mo;
- c->distance = P_AproxDistance(c->mo->x-viewx, c->mo->y-viewy)
- >>FRACBITS;
- }
-}
-
-void S_SetMaxVolume(boolean fullprocess)
-{
- int i;
-
- if(!fullprocess)
- {
- soundCurve[0] = (*((byte *)W_CacheLumpName("SNDCURVE", PU_CACHE))*(snd_MaxVolume*8))>>7;
- }
- else
- {
- for(i = 0; i < MAX_SND_DIST; i++)
- {
- soundCurve[i] = (*((byte *)W_CacheLumpName("SNDCURVE", PU_CACHE)+i)*(snd_MaxVolume*8))>>7;
- }
- }
-}
-
-static boolean musicPaused;
-void S_SetMusicVolume(void)
-{
- I_SetMusicVolume(snd_MusicVolume);
- if(snd_MusicVolume == 0)
- {
- I_PauseSong(rs);
- musicPaused = true;
- }
- else if(musicPaused)
- {
- musicPaused = false;
- I_ResumeSong(rs);
- }
-}
-
-void S_ShutDown(void)
-{
- extern int tsm_ID;
- if(tsm_ID != -1)
- {
- I_StopSong(rs);
- I_UnRegisterSong(rs);
- I_ShutdownSound();
- }
-}
-
-/*
-=============================================================================
-
- CONSTANTS
-
-=============================================================================
-*/
-
-#define SC_INDEX 0x3C4
-#define SC_RESET 0
-#define SC_CLOCK 1
-#define SC_MAPMASK 2
-#define SC_CHARMAP 3
-#define SC_MEMMODE 4
-
-#define CRTC_INDEX 0x3D4
-#define CRTC_H_TOTAL 0
-#define CRTC_H_DISPEND 1
-#define CRTC_H_BLANK 2
-#define CRTC_H_ENDBLANK 3
-#define CRTC_H_RETRACE 4
-#define CRTC_H_ENDRETRACE 5
-#define CRTC_V_TOTAL 6
-#define CRTC_OVERFLOW 7
-#define CRTC_ROWSCAN 8
-#define CRTC_MAXSCANLINE 9
-#define CRTC_CURSORSTART 10
-#define CRTC_CURSOREND 11
-#define CRTC_STARTHIGH 12
-#define CRTC_STARTLOW 13
-#define CRTC_CURSORHIGH 14
-#define CRTC_CURSORLOW 15
-#define CRTC_V_RETRACE 16
-#define CRTC_V_ENDRETRACE 17
-#define CRTC_V_DISPEND 18
-#define CRTC_OFFSET 19
-#define CRTC_UNDERLINE 20
-#define CRTC_V_BLANK 21
-#define CRTC_V_ENDBLANK 22
-#define CRTC_MODE 23
-#define CRTC_LINECOMPARE 24
-
-
-#define GC_INDEX 0x3CE
-#define GC_SETRESET 0
-#define GC_ENABLESETRESET 1
-#define GC_COLORCOMPARE 2
-#define GC_DATAROTATE 3
-#define GC_READMAP 4
-#define GC_MODE 5
-#define GC_MISCELLANEOUS 6
-#define GC_COLORDONTCARE 7
-#define GC_BITMASK 8
-
-#define ATR_INDEX 0x3c0
-#define ATR_MODE 16
-#define ATR_OVERSCAN 17
-#define ATR_COLORPLANEENABLE 18
-#define ATR_PELPAN 19
-#define ATR_COLORSELECT 20
-
-#define STATUS_REGISTER_1 0x3da
-
-#define PEL_WRITE_ADR 0x3c8
-#define PEL_READ_ADR 0x3c7
-#define PEL_DATA 0x3c9
-#define PEL_MASK 0x3c6
-
-boolean grmode;
-
-//==================================================
-//
-// joystick vars
-//
-//==================================================
-
-boolean joystickpresent;
-extern unsigned joystickx, joysticky;
-boolean I_ReadJoystick (void); // returns false if not connected
-
-
-//==================================================
-
-#define VBLCOUNTER 34000 // hardware tics to a frame
-
-
-#define TIMERINT 8
-#define KEYBOARDINT 9
-
-#define CRTCOFF (_inbyte(STATUS_REGISTER_1)&1)
-#define CLI _disable()
-#define STI _enable()
-
-#define _outbyte(x,y) (outp(x,y))
-#define _outhword(x,y) (outpw(x,y))
-
-#define _inbyte(x) (inp(x))
-#define _inhword(x) (inpw(x))
-
-#define MOUSEB1 1
-#define MOUSEB2 2
-#define MOUSEB3 4
-
-boolean mousepresent;
-//static int tsm_ID = -1; // tsm init flag
-
-//===============================
-
-int ticcount;
-
-// REGS stuff used for int calls
-union REGS regs;
-struct SREGS segregs;
-
-boolean novideo; // if true, stay in text mode for debugging
-
-#define KBDQUESIZE 32
-byte keyboardque[KBDQUESIZE];
-int kbdtail, kbdhead;
-
-#define KEY_LSHIFT 0xfe
-
-#define KEY_INS (0x80+0x52)
-#define KEY_DEL (0x80+0x53)
-#define KEY_PGUP (0x80+0x49)
-#define KEY_PGDN (0x80+0x51)
-#define KEY_HOME (0x80+0x47)
-#define KEY_END (0x80+0x4f)
-
-#define SC_RSHIFT 0x36
-#define SC_LSHIFT 0x2a
-
-byte scantokey[128] =
- {
-// 0 1 2 3 4 5 6 7
-// 8 9 A B C D E F
- 0 , 27, '1', '2', '3', '4', '5', '6',
- '7', '8', '9', '0', '-', '=', KEY_BACKSPACE, 9, // 0
- 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i',
- 'o', 'p', '[', ']', 13 , KEY_RCTRL,'a', 's', // 1
- 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';',
- 39 , '`', KEY_LSHIFT,92, 'z', 'x', 'c', 'v', // 2
- 'b', 'n', 'm', ',', '.', '/', KEY_RSHIFT,'*',
- KEY_RALT,' ', 0 , KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5, // 3
- KEY_F6, KEY_F7, KEY_F8, KEY_F9, KEY_F10,0 , 0 , KEY_HOME,
- KEY_UPARROW,KEY_PGUP,'-',KEY_LEFTARROW,'5',KEY_RIGHTARROW,'+',KEY_END, //4
- KEY_DOWNARROW,KEY_PGDN,KEY_INS,KEY_DEL,0,0, 0, KEY_F11,
- KEY_F12,0 , 0 , 0 , 0 , 0 , 0 , 0, // 5
- 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
- 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0, // 6
- 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0,
- 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 // 7
- };
-
-//==========================================================================
-
-//--------------------------------------------------------------------------
-//
-// FUNC I_GetTime
-//
-// Returns time in 1/35th second tics.
-//
-//--------------------------------------------------------------------------
-
-int I_GetTime (void)
-{
-#ifdef NOTIMER
- ticcount++;
-#endif
- return(ticcount);
-}
-
-//--------------------------------------------------------------------------
-//
-// PROC I_ColorBorder
-//
-//--------------------------------------------------------------------------
-
-void I_ColorBorder(void)
-{
- int i;
-
- I_WaitVBL(1);
- _outbyte(PEL_WRITE_ADR, 0);
- for(i = 0; i < 3; i++)
- {
- _outbyte(PEL_DATA, 63);
- }
-}
-
-//--------------------------------------------------------------------------
-//
-// PROC I_UnColorBorder
-//
-//--------------------------------------------------------------------------
-
-void I_UnColorBorder(void)
-{
- int i;
-
- I_WaitVBL(1);
- _outbyte(PEL_WRITE_ADR, 0);
- for(i = 0; i < 3; i++)
- {
- _outbyte(PEL_DATA, 0);
- }
-}
-
-/*
-============================================================================
-
- USER INPUT
-
-============================================================================
-*/
-
-//--------------------------------------------------------------------------
-//
-// PROC I_WaitVBL
-//
-//--------------------------------------------------------------------------
-
-void I_WaitVBL(int vbls)
-{
- int i;
- int old;
- int stat;
-
- if(novideo)
- {
- return;
- }
- while(vbls--)
- {
- do
- {
- stat = inp(STATUS_REGISTER_1);
- if(stat&8)
- {
- break;
- }
- } while(1);
- do
- {
- stat = inp(STATUS_REGISTER_1);
- if((stat&8) == 0)
- {
- break;
- }
- } while(1);
- }
-}
-
-//--------------------------------------------------------------------------
-//
-// PROC I_SetPalette
-//
-// Palette source must use 8 bit RGB elements.
-//
-//--------------------------------------------------------------------------
-
-void I_SetPalette(byte *palette)
-{
- int i;
-
- if(novideo)
- {
- return;
- }
- I_WaitVBL(1);
- _outbyte(PEL_WRITE_ADR, 0);
- for(i = 0; i < 768; i++)
- {
- _outbyte(PEL_DATA, (gammatable[usegamma][*palette++])>>2);
- }
-}
-
-/*
-============================================================================
-
- GRAPHICS MODE
-
-============================================================================
-*/
-
-byte *pcscreen, *destscreen, *destview;
-
-
-/*
-==============
-=
-= I_Update
-=
-==============
-*/
-
-int UpdateState;
-extern int screenblocks;
-
-void I_Update (void)
-{
- int i;
- byte *dest;
- int tics;
- static int lasttic;
-
-//
-// blit screen to video
-//
- if(DisplayTicker)
- {
- if(screenblocks > 9 || UpdateState&(I_FULLSCRN|I_MESSAGES))
- {
- dest = (byte *)screen;
- }
- else
- {
- dest = (byte *)pcscreen;
- }
- tics = ticcount-lasttic;
- lasttic = ticcount;
- if(tics > 20)
- {
- tics = 20;
- }
- for(i = 0; i < tics; i++)
- {
- *dest = 0xff;
- dest += 2;
- }
- for(i = tics; i < 20; i++)
- {
- *dest = 0x00;
- dest += 2;
- }
- }
- if(UpdateState == I_NOUPDATE)
- {
- return;
- }
- if(UpdateState&I_FULLSCRN)
- {
- memcpy(pcscreen, screen, SCREENWIDTH*SCREENHEIGHT);
- UpdateState = I_NOUPDATE; // clear out all draw types
- }
- if(UpdateState&I_FULLVIEW)
- {
- if(UpdateState&I_MESSAGES && screenblocks > 7)
- {
- for(i = 0; i <
- (viewwindowy+viewheight)*SCREENWIDTH; i += SCREENWIDTH)
- {
- memcpy(pcscreen+i, screen+i, SCREENWIDTH);
- }
- UpdateState &= ~(I_FULLVIEW|I_MESSAGES);
- }
- else
- {
- for(i = viewwindowy*SCREENWIDTH+viewwindowx; i <
- (viewwindowy+viewheight)*SCREENWIDTH; i += SCREENWIDTH)
- {
- memcpy(pcscreen+i, screen+i, viewwidth);
- }
- UpdateState &= ~I_FULLVIEW;
- }
- }
- if(UpdateState&I_STATBAR)
- {
- memcpy(pcscreen+SCREENWIDTH*(SCREENHEIGHT-SBARHEIGHT),
- screen+SCREENWIDTH*(SCREENHEIGHT-SBARHEIGHT),
- SCREENWIDTH*SBARHEIGHT);
- UpdateState &= ~I_STATBAR;
- }
- if(UpdateState&I_MESSAGES)
- {
- memcpy(pcscreen, screen, SCREENWIDTH*28);
- UpdateState &= ~I_MESSAGES;
- }
-
-// memcpy(pcscreen, screen, SCREENHEIGHT*SCREENWIDTH);
-}
-
-//--------------------------------------------------------------------------
-//
-// PROC I_InitGraphics
-//
-//--------------------------------------------------------------------------
-
-void I_InitGraphics(void)
-{
- if(novideo)
- {
- return;
- }
- grmode = true;
- regs.w.ax = 0x13;
- int386(0x10, (const union REGS *)&regs, &regs);
- pcscreen = destscreen = (byte *)0xa0000;
- I_SetPalette(W_CacheLumpName("PLAYPAL", PU_CACHE));
- I_InitDiskFlash();
-}
-
-//--------------------------------------------------------------------------
-//
-// PROC I_ShutdownGraphics
-//
-//--------------------------------------------------------------------------
-
-void I_ShutdownGraphics(void)
-{
-
- if(*(byte *)0x449 == 0x13) // don't reset mode if it didn't get set
- {
- regs.w.ax = 3;
- int386(0x10, &regs, &regs); // back to text mode
- }
-}
-
-//--------------------------------------------------------------------------
-//
-// PROC I_ReadScreen
-//
-// Reads the screen currently displayed into a linear buffer.
-//
-//--------------------------------------------------------------------------
-
-void I_ReadScreen(byte *scr)
-{
- memcpy(scr, screen, SCREENWIDTH*SCREENHEIGHT);
-}
-
-
-//===========================================================================
-
-/*
-===================
-=
-= I_StartTic
-=
-// called by D_DoomLoop
-// called before processing each tic in a frame
-// can call D_PostEvent
-// asyncronous interrupt functions should maintain private ques that are
-// read by the syncronous functions to be converted into events
-===================
-*/
-
-/*
- OLD STARTTIC STUFF
-
-void I_StartTic (void)
-{
- int k;
- event_t ev;
-
-
- I_ReadMouse ();
-
-//
-// keyboard events
-//
- while (kbdtail < kbdhead)
- {
- k = keyboardque[kbdtail&(KBDQUESIZE-1)];
-
-// if (k==14)
-// I_Error ("exited");
-
- kbdtail++;
-
- // extended keyboard shift key bullshit
- if ( (k&0x7f)==KEY_RSHIFT )
- {
- if ( keyboardque[(kbdtail-2)&(KBDQUESIZE-1)]==0xe0 )
- continue;
- k &= 0x80;
- k |= KEY_RSHIFT;
- }
-
- if (k==0xe0)
- continue; // special / pause keys
- if (keyboardque[(kbdtail-2)&(KBDQUESIZE-1)] == 0xe1)
- continue; // pause key bullshit
-
- if (k==0xc5 && keyboardque[(kbdtail-2)&(KBDQUESIZE-1)] == 0x9d)
- {
- ev.type = ev_keydown;
- ev.data1 = KEY_PAUSE;
- D_PostEvent (&ev);
- continue;
- }
-
- if (k&0x80)
- ev.type = ev_keyup;
- else
- ev.type = ev_keydown;
- k &= 0x7f;
-
- ev.data1 = k;
- //ev.data1 = scantokey[k];
-
- D_PostEvent (&ev);
- }
-}
-*/
-
-#define SC_UPARROW 0x48
-#define SC_DOWNARROW 0x50
-#define SC_LEFTARROW 0x4b
-#define SC_RIGHTARROW 0x4d
-
-void I_StartTic (void)
-{
- int k;
- event_t ev;
-
-
- I_ReadMouse ();
-
-//
-// keyboard events
-//
- while (kbdtail < kbdhead)
- {
- k = keyboardque[kbdtail&(KBDQUESIZE-1)];
- kbdtail++;
-
- // extended keyboard shift key bullshit
- if ( (k&0x7f)==SC_LSHIFT || (k&0x7f)==SC_RSHIFT )
- {
- if ( keyboardque[(kbdtail-2)&(KBDQUESIZE-1)]==0xe0 )
- continue;
- k &= 0x80;
- k |= SC_RSHIFT;
- }
-
- if (k==0xe0)
- continue; // special / pause keys
- if (keyboardque[(kbdtail-2)&(KBDQUESIZE-1)] == 0xe1)
- continue; // pause key bullshit
-
- if (k==0xc5 && keyboardque[(kbdtail-2)&(KBDQUESIZE-1)] == 0x9d)
- {
- ev.type = ev_keydown;
- ev.data1 = KEY_PAUSE;
- D_PostEvent (&ev);
- continue;
- }
-
- if (k&0x80)
- ev.type = ev_keyup;
- else
- ev.type = ev_keydown;
- k &= 0x7f;
- switch (k)
- {
- case SC_UPARROW:
- ev.data1 = KEY_UPARROW;
- break;
- case SC_DOWNARROW:
- ev.data1 = KEY_DOWNARROW;
- break;
- case SC_LEFTARROW:
- ev.data1 = KEY_LEFTARROW;
- break;
- case SC_RIGHTARROW:
- ev.data1 = KEY_RIGHTARROW;
- break;
- default:
- ev.data1 = scantokey[k];
- break;
- }
- D_PostEvent (&ev);
- }
-
-}
-
-
-void I_ReadKeys (void)
-{
- int k;
- event_t ev;
-
-
- while (1)
- {
- while (kbdtail < kbdhead)
- {
- k = keyboardque[kbdtail&(KBDQUESIZE-1)];
- kbdtail++;
- printf ("0x%x\n",k);
- if (k == 1)
- I_Quit ();
- }
- }
-}
-
-/*
-===============
-=
-= I_StartFrame
-=
-===============
-*/
-
-void I_StartFrame (void)
-{
- I_JoystickEvents ();
- I_ReadExternDriver();
-}
-
-/*
-============================================================================
-
- TIMER INTERRUPT
-
-============================================================================
-*/
-
-void I_ColorBlack (int r, int g, int b)
-{
-_outbyte (PEL_WRITE_ADR,0);
-_outbyte(PEL_DATA,r);
-_outbyte(PEL_DATA,g);
-_outbyte(PEL_DATA,b);
-}
-
-
-/*
-================
-=
-= I_TimerISR
-=
-================
-*/
-
-int I_TimerISR (void)
-{
- ticcount++;
- return 0;
-}
-
-/*
-============================================================================
-
- KEYBOARD
-
-============================================================================
-*/
-
-void (__interrupt __far *oldkeyboardisr) () = NULL;
-
-int lastpress;
-
-/*
-================
-=
-= I_KeyboardISR
-=
-================
-*/
-
-void __interrupt I_KeyboardISR (void)
-{
-// Get the scan code
-
- keyboardque[kbdhead&(KBDQUESIZE-1)] = lastpress = _inbyte(0x60);
- kbdhead++;
-
-// acknowledge the interrupt
-
- _outbyte(0x20,0x20);
-}
-
-
-
-/*
-===============
-=
-= I_StartupKeyboard
-=
-===============
-*/
-
-void I_StartupKeyboard (void)
-{
-#ifndef NOKBD
- oldkeyboardisr = _dos_getvect(KEYBOARDINT);
- _dos_setvect (0x8000 | KEYBOARDINT, I_KeyboardISR);
-#endif
-
-//I_ReadKeys ();
-}
-
-
-void I_ShutdownKeyboard (void)
-{
- if (oldkeyboardisr)
- _dos_setvect (KEYBOARDINT, oldkeyboardisr);
- *(short *)0x41c = *(short *)0x41a; // clear bios key buffer
-}
-
-
-
-/*
-============================================================================
-
- MOUSE
-
-============================================================================
-*/
-
-
-int I_ResetMouse (void)
-{
- regs.w.ax = 0; // reset
- int386 (0x33, &regs, &regs);
- return regs.w.ax;
-}
-
-
-
-/*
-================
-=
-= StartupMouse
-=
-================
-*/
-
-void I_StartupCyberMan(void);
-
-void I_StartupMouse (void)
-{
- int (far *function)();
-
- //
- // General mouse detection
- //
- mousepresent = 0;
- if ( M_CheckParm ("-nomouse") || !usemouse )
- return;
-
- if (I_ResetMouse () != 0xffff)
- {
- tprintf ("Mouse: not present ",0);
- return;
- }
- tprintf ("Mouse: detected ",0);
-
- mousepresent = 1;
-
- I_StartupCyberMan();
-}
-
-
-/*
-================
-=
-= ShutdownMouse
-=
-================
-*/
-
-void I_ShutdownMouse (void)
-{
- if (!mousepresent)
- return;
-
- I_ResetMouse ();
-}
-
-
-/*
-================
-=
-= I_ReadMouse
-=
-================
-*/
-
-void I_ReadMouse (void)
-{
- event_t ev;
-
-//
-// mouse events
-//
- if (!mousepresent)
- return;
-
- ev.type = ev_mouse;
-
- memset (&dpmiregs,0,sizeof(dpmiregs));
- dpmiregs.eax = 3; // read buttons / position
- DPMIInt (0x33);
- ev.data1 = dpmiregs.ebx;
-
- dpmiregs.eax = 11; // read counters
- DPMIInt (0x33);
- ev.data2 = (short)dpmiregs.ecx;
- ev.data3 = -(short)dpmiregs.edx;
-
- D_PostEvent (&ev);
-}
-
-/*
-============================================================================
-
- JOYSTICK
-
-============================================================================
-*/
-
-int joyxl, joyxh, joyyl, joyyh;
-
-boolean WaitJoyButton (void)
-{
- int oldbuttons, buttons;
-
- oldbuttons = 0;
- do
- {
- I_WaitVBL (1);
- buttons = ((inp(0x201) >> 4)&1)^1;
- if (buttons != oldbuttons)
- {
- oldbuttons = buttons;
- continue;
- }
-
- if ( (lastpress& 0x7f) == 1 )
- {
- joystickpresent = false;
- return false;
- }
- } while ( !buttons);
-
- do
- {
- I_WaitVBL (1);
- buttons = ((inp(0x201) >> 4)&1)^1;
- if (buttons != oldbuttons)
- {
- oldbuttons = buttons;
- continue;
- }
-
- if ( (lastpress& 0x7f) == 1 )
- {
- joystickpresent = false;
- return false;
- }
- } while ( buttons);
-
- return true;
-}
-
-
-
-/*
-===============
-=
-= I_StartupJoystick
-=
-===============
-*/
-
-int basejoyx, basejoyy;
-
-void I_StartupJoystick (void)
-{
- int buttons;
- int count;
- int centerx, centery;
-
- joystickpresent = 0;
- if ( M_CheckParm ("-nojoy") || !usejoystick )
- return;
-
- if (!I_ReadJoystick ())
- {
- joystickpresent = false;
- tprintf ("joystick not found ",0);
- return;
- }
- printf("joystick found\n");
- joystickpresent = true;
-
- printf("CENTER the joystick and press button 1:");
- if (!WaitJoyButton ())
- return;
- I_ReadJoystick ();
- centerx = joystickx;
- centery = joysticky;
-
- printf("\nPush the joystick to the UPPER LEFT corner and press button 1:");
- if (!WaitJoyButton ())
- return;
- I_ReadJoystick ();
- joyxl = (centerx + joystickx)/2;
- joyyl = (centerx + joysticky)/2;
-
- printf("\nPush the joystick to the LOWER RIGHT corner and press button 1:");
- if (!WaitJoyButton ())
- return;
- I_ReadJoystick ();
- joyxh = (centerx + joystickx)/2;
- joyyh = (centery + joysticky)/2;
- printf("\n");
-}
-
-/*
-===============
-=
-= I_JoystickEvents
-=
-===============
-*/
-
-void I_JoystickEvents (void)
-{
- event_t ev;
-
-//
-// joystick events
-//
- if (!joystickpresent)
- return;
-
- I_ReadJoystick ();
- ev.type = ev_joystick;
- ev.data1 = ((inp(0x201) >> 4)&15)^15;
-
- if (joystickx < joyxl)
- ev.data2 = -1;
- else if (joystickx > joyxh)
- ev.data2 = 1;
- else
- ev.data2 = 0;
- if (joysticky < joyyl)
- ev.data3 = -1;
- else if (joysticky > joyyh)
- ev.data3 = 1;
- else
- ev.data3 = 0;
-
- D_PostEvent (&ev);
-}
-
-
-
-/*
-============================================================================
-
- DPMI STUFF
-
-============================================================================
-*/
-
-#define REALSTACKSIZE 1024
-
-dpmiregs_t dpmiregs;
-
-unsigned realstackseg;
-
-void I_DivException (void);
-int I_SetDivException (void);
-
-void DPMIFarCall (void)
-{
- segread (&segregs);
- regs.w.ax = 0x301;
- regs.w.bx = 0;
- regs.w.cx = 0;
- regs.x.edi = (unsigned)&dpmiregs;
- segregs.es = segregs.ds;
- int386x( DPMI_INT, &regs, &regs, &segregs );
-}
-
-
-void DPMIInt (int i)
-{
- dpmiregs.ss = realstackseg;
- dpmiregs.sp = REALSTACKSIZE-4;
-
- segread (&segregs);
- regs.w.ax = 0x300;
- regs.w.bx = i;
- regs.w.cx = 0;
- regs.x.edi = (unsigned)&dpmiregs;
- segregs.es = segregs.ds;
- int386x( DPMI_INT, &regs, &regs, &segregs );
-}
-
-
-/*
-==============
-=
-= I_StartupDPMI
-=
-==============
-*/
-
-void I_StartupDPMI (void)
-{
- extern char __begtext;
- extern char ___argc;
- int n,d;
-
-//
-// allocate a decent stack for real mode ISRs
-//
- realstackseg = (int)I_AllocLow (1024) >> 4;
-
-//
-// lock the entire program down
-//
-
-// _dpmi_lockregion (&__begtext, &___argc - &__begtext);
-
-
-//
-// catch divide by 0 exception
-//
-#if 0
- segread(&segregs);
- regs.w.ax = 0x0203; // DPMI set processor exception handler vector
- regs.w.bx = 0; // int 0
- regs.w.cx = segregs.cs;
- regs.x.edx = (int)&I_DivException;
- printf ("%x : %x\n",regs.w.cx, regs.x.edx);
- int386( DPMI_INT, &regs, &regs);
-#endif
-
-#if 0
- n = I_SetDivException ();
- printf ("return: %i\n",n);
- n = 100;
- d = 0;
- printf ("100 / 0 = %i\n",n/d);
-
-exit (1);
-#endif
-}
-
-
-
-/*
-============================================================================
-
- TIMER INTERRUPT
-
-============================================================================
-*/
-
-void (__interrupt __far *oldtimerisr) ();
-
-
-void IO_ColorBlack (int r, int g, int b)
-{
-_outbyte (PEL_WRITE_ADR,0);
-_outbyte(PEL_DATA,r);
-_outbyte(PEL_DATA,g);
-_outbyte(PEL_DATA,b);
-}
-
-
-/*
-================
-=
-= IO_TimerISR
-=
-================
-*/
-
-//void __interrupt IO_TimerISR (void)
-
-void __interrupt __far IO_TimerISR (void)
-{
- ticcount++;
- _outbyte(0x20,0x20); // Ack the interrupt
-}
-
-/*
-=====================
-=
-= IO_SetTimer0
-=
-= Sets system timer 0 to the specified speed
-=
-=====================
-*/
-
-void IO_SetTimer0(int speed)
-{
- if (speed > 0 && speed < 150)
- I_Error ("INT_SetTimer0: %i is a bad value",speed);
-
- _outbyte(0x43,0x36); // Change timer 0
- _outbyte(0x40,speed);
- _outbyte(0x40,speed >> 8);
-}
-
-
-
-/*
-===============
-=
-= IO_StartupTimer
-=
-===============
-*/
-
-void IO_StartupTimer (void)
-{
- oldtimerisr = _dos_getvect(TIMERINT);
-
- _dos_setvect (0x8000 | TIMERINT, IO_TimerISR);
- IO_SetTimer0 (VBLCOUNTER);
-}
-
-void IO_ShutdownTimer (void)
-{
- if (oldtimerisr)
- {
- IO_SetTimer0 (0); // back to 18.4 ips
- _dos_setvect (TIMERINT, oldtimerisr);
- }
-}
-
-//===========================================================================
-
-
-/*
-===============
-=
-= I_Init
-=
-= hook interrupts and set graphics mode
-=
-===============
-*/
-
-void I_Init (void)
-{
- extern void I_StartupTimer(void);
-
- novideo = M_CheckParm("novideo");
- tprintf("I_StartupDPMI",1);
- I_StartupDPMI();
- tprintf("I_StartupMouse ",1);
- I_StartupMouse();
-// tprintf("I_StartupJoystick ",1);
-// I_StartupJoystick();
-// tprintf("I_StartupKeyboard ",1);
-// I_StartupKeyboard();
- tprintf("S_Init... ",1);
- S_Init();
- //IO_StartupTimer();
- S_Start();
-}
-
-
-/*
-===============
-=
-= I_Shutdown
-=
-= return to default system state
-=
-===============
-*/
-
-void I_Shutdown (void)
-{
- I_ShutdownGraphics ();
- IO_ShutdownTimer ();
- S_ShutDown ();
- I_ShutdownMouse ();
- I_ShutdownKeyboard ();
-
- IO_SetTimer0 (0);
-}
-
-
-/*
-================
-=
-= I_Error
-=
-================
-*/
-
-void I_Error (char *error, ...)
-{
- union REGS regs;
-
- va_list argptr;
-
- D_QuitNetGame ();
- I_Shutdown ();
- va_start (argptr,error);
- regs.x.eax = 0x3;
- int386(0x10, &regs, &regs);
- vprintf (error,argptr);
- va_end (argptr);
- printf ("\n");
- exit (1);
-}
-
-//--------------------------------------------------------------------------
-//
-// I_Quit
-//
-// Shuts down net game, saves defaults, prints the exit text message,
-// goes to text mode, and exits.
-//
-//--------------------------------------------------------------------------
-
-void I_Quit(void)
-{
- byte *scr;
- char *lumpName;
- int r;
-
- D_QuitNetGame();
- M_SaveDefaults();
- scr = (byte *)W_CacheLumpName("ENDTEXT", PU_CACHE);
- I_Shutdown();
- memcpy((void *)0xb8000, scr, 80*25*2);
- regs.w.ax = 0x0200;
- regs.h.bh = 0;
- regs.h.dl = 0;
- regs.h.dh = 23;
- int386(0x10, (const union REGS *)&regs, &regs); // Set text pos
- _settextposition(24, 1);
- exit(0);
-}
-
-/*
-===============
-=
-= I_ZoneBase
-=
-===============
-*/
-
-byte *I_ZoneBase (int *size)
-{
- int meminfo[32];
- int heap;
- int i;
- int block;
- byte *ptr;
-
- memset (meminfo,0,sizeof(meminfo));
- segread(&segregs);
- segregs.es = segregs.ds;
- regs.w.ax = 0x500; // get memory info
- regs.x.edi = (int)&meminfo;
- int386x( 0x31, &regs, &regs, &segregs );
-
- heap = meminfo[0];
- printf ("DPMI memory: 0x%x, ",heap);
-
- do
- {
- heap -= 0x10000; // leave 64k alone
- if (heap > 0x800000)
- heap = 0x800000;
- ptr = malloc (heap);
- } while (!ptr);
-
- printf ("0x%x allocated for zone\n", heap);
- if (heap < 0x180000)
- I_Error ("Insufficient DPMI memory!");
-#if 0
- regs.w.ax = 0x501; // allocate linear block
- regs.w.bx = heap>>16;
- regs.w.cx = heap&0xffff;
- int386( 0x31, &regs, &regs);
- if (regs.w.cflag)
- I_Error ("Couldn't allocate DPMI memory!");
-
- block = (regs.w.si << 16) + regs.w.di;
-#endif
-
- *size = heap;
- return ptr;
-}
-
-/*
-=============================================================================
-
- DISK ICON FLASHING
-
-=============================================================================
-*/
-
-void I_InitDiskFlash (void)
-{
-#if 0
- void *pic;
- byte *temp;
-
- pic = W_CacheLumpName ("STDISK",PU_CACHE);
- temp = destscreen;
- destscreen = (byte *)0xac000;
- V_DrawPatchDirect (SCREENWIDTH-16,SCREENHEIGHT-16,0,pic);
- destscreen = temp;
-#endif
-}
-
-// draw disk icon
-void I_BeginRead (void)
-{
-#if 0
- byte *src,*dest;
- int y;
-
- if (!grmode)
- return;
-
-// write through all planes
- outp (SC_INDEX,SC_MAPMASK);
- outp (SC_INDEX+1,15);
-// set write mode 1
- outp (GC_INDEX,GC_MODE);
- outp (GC_INDEX+1,inp(GC_INDEX+1)|1);
-
-// copy to backup
- src = currentscreen + 184*80 + 304/4;
- dest = (byte *)0xac000 + 184*80 + 288/4;
- for (y=0 ; y<16 ; y++)
- {
- dest[0] = src[0];
- dest[1] = src[1];
- dest[2] = src[2];
- dest[3] = src[3];
- src += 80;
- dest += 80;
- }
-
-// copy disk over
- dest = currentscreen + 184*80 + 304/4;
- src = (byte *)0xac000 + 184*80 + 304/4;
- for (y=0 ; y<16 ; y++)
- {
- dest[0] = src[0];
- dest[1] = src[1];
- dest[2] = src[2];
- dest[3] = src[3];
- src += 80;
- dest += 80;
- }
-
-
-// set write mode 0
- outp (GC_INDEX,GC_MODE);
- outp (GC_INDEX+1,inp(GC_INDEX+1)&~1);
-#endif
-}
-
-// erase disk icon
-void I_EndRead (void)
-{
-#if 0
- byte *src,*dest;
- int y;
-
- if (!grmode)
- return;
-
-// write through all planes
- outp (SC_INDEX,SC_MAPMASK);
- outp (SC_INDEX+1,15);
-// set write mode 1
- outp (GC_INDEX,GC_MODE);
- outp (GC_INDEX+1,inp(GC_INDEX+1)|1);
-
-
-// copy disk over
- dest = currentscreen + 184*80 + 304/4;
- src = (byte *)0xac000 + 184*80 + 288/4;
- for (y=0 ; y<16 ; y++)
- {
- dest[0] = src[0];
- dest[1] = src[1];
- dest[2] = src[2];
- dest[3] = src[3];
- src += 80;
- dest += 80;
- }
-
-// set write mode 0
- outp (GC_INDEX,GC_MODE);
- outp (GC_INDEX+1,inp(GC_INDEX+1)&~1);
-#endif
-}
-
-
-
-/*
-=============
-=
-= I_AllocLow
-=
-=============
-*/
-
-byte *I_AllocLow (int length)
-{
- byte *mem;
-
- // DPMI call 100h allocates DOS memory
- segread(&segregs);
- regs.w.ax = 0x0100; // DPMI allocate DOS memory
- regs.w.bx = (length+15) / 16;
- int386( DPMI_INT, &regs, &regs);
-// segment = regs.w.ax;
-// selector = regs.w.dx;
- if (regs.w.cflag != 0)
- I_Error ("I_AllocLow: DOS alloc of %i failed, %i free",
- length, regs.w.bx*16);
-
-
- mem = (void *) ((regs.x.eax & 0xFFFF) << 4);
-
- memset (mem,0,length);
- return mem;
-}
-
-/*
-============================================================================
-
- NETWORKING
-
-============================================================================
-*/
-
-/* // FUCKED LINES
-typedef struct
-{
- char priv[508];
-} doomdata_t;
-*/ // FUCKED LINES
-
-#define DOOMCOM_ID 0x12345678l
-
-/* // FUCKED LINES
-typedef struct
-{
- long id;
- short intnum; // DOOM executes an int to execute commands
-
-// communication between DOOM and the driver
- short command; // CMD_SEND or CMD_GET
- short remotenode; // dest for send, set by get (-1 = no packet)
- short datalength; // bytes in doomdata to be sent
-
-// info common to all nodes
- short numnodes; // console is allways node 0
- short ticdup; // 1 = no duplication, 2-5 = dup for slow nets
- short extratics; // 1 = send a backup tic in every packet
- short deathmatch; // 1 = deathmatch
- short savegame; // -1 = new game, 0-5 = load savegame
- short episode; // 1-3
- short map; // 1-9
- short skill; // 1-5
-
-// info specific to this node
- short consoleplayer;
- short numplayers;
- short angleoffset; // 1 = left, 0 = center, -1 = right
- short drone; // 1 = drone
-
-// packet data to be sent
- doomdata_t data;
-} doomcom_t;
-*/ // FUCKED LINES
-
-extern doomcom_t *doomcom;
-
-/*
-====================
-=
-= I_InitNetwork
-=
-====================
-*/
-
-void I_InitNetwork (void)
-{
- int i;
-
- i = M_CheckParm ("-net");
- if (!i)
- {
- //
- // single player game
- //
- doomcom = malloc (sizeof (*doomcom) );
- memset (doomcom, 0, sizeof(*doomcom) );
- netgame = false;
- doomcom->id = DOOMCOM_ID;
- doomcom->numplayers = doomcom->numnodes = 1;
- doomcom->deathmatch = false;
- doomcom->consoleplayer = 0;
- doomcom->ticdup = 1;
- doomcom->extratics = 0;
- return;
- }
-
- netgame = true;
- doomcom = (doomcom_t *)atoi(myargv[i+1]);
-//DEBUG
-doomcom->skill = startskill;
-doomcom->episode = startepisode;
-doomcom->map = startmap;
-doomcom->deathmatch = deathmatch;
-
-}
-
-void I_NetCmd (void)
-{
- if (!netgame)
- I_Error ("I_NetCmd when not in netgame");
- DPMIInt (doomcom->intnum);
-}
-
-int i_Vector;
-externdata_t *i_ExternData;
-boolean useexterndriver;
-
-//=========================================================================
-//
-// I_CheckExternDriver
-//
-// Checks to see if a vector, and an address for an external driver
-// have been passed.
-//=========================================================================
-
-void I_CheckExternDriver(void)
-{
- int i;
-
- if(!(i = M_CheckParm("-externdriver")))
- {
- return;
- }
- i_ExternData = (externdata_t *)atoi(myargv[i+1]);
- i_Vector = i_ExternData->vector;
-
- useexterndriver = true;
-}
-
-//=========================================================================
-//
-// I_ReadExternDriver
-//
-// calls the external interrupt, which should then update i_ExternDriver
-//=========================================================================
-
-void I_ReadExternDriver(void)
-{
- event_t ev;
-
- if(useexterndriver)
- {
- DPMIInt(i_Vector);
- }
-}
+// Emacs style mode select -*- C++ -*-
+//-----------------------------------------------------------------------------
+//
+// Copyright(C) 1993-1996 Id Software, Inc.
+// Copyright(C) 1993-2008 Raven Software
+//
+// 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.
+//
+//-----------------------------------------------------------------------------
+
+// I_IBM.C
+
+#include <dos.h>
+#include <conio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <graph.h>
+#include "DoomDef.h"
+#include "R_local.h"
+#include "sounds.h"
+#include "i_sound.h"
+#include "dmx.h"
+
+// Macros
+
+#define DPMI_INT 0x31
+//#define NOKBD
+//#define NOTIMER
+
+// Public Data
+
+int DisplayTicker = 0;
+
+// Code
+
+void main(int argc, char **argv)
+{
+ myargc = argc;
+ myargv = argv;
+ D_DoomMain();
+}
+
+void I_StartupNet(void);
+void I_ShutdownNet(void);
+void I_ReadExternDriver(void);
+
+typedef struct
+{
+ unsigned edi, esi, ebp, reserved, ebx, edx, ecx, eax;
+ unsigned short flags, es, ds, fs, gs, ip, cs, sp, ss;
+} dpmiregs_t;
+
+extern dpmiregs_t dpmiregs;
+
+void I_ReadMouse(void);
+void I_InitDiskFlash(void);
+
+extern int usemouse, usejoystick;
+
+extern void **lumpcache;
+
+/*
+===============================================================================
+
+ MUSIC & SFX API
+
+===============================================================================
+*/
+
+static channel_t channel[MAX_CHANNELS];
+
+static int rs; //the current registered song.
+int mus_song = -1;
+int mus_lumpnum;
+void *mus_sndptr;
+byte *soundCurve;
+
+extern sfxinfo_t S_sfx[];
+extern musicinfo_t S_music[];
+
+extern int snd_DesiredMusicDevice;
+extern int snd_DesiredSfxDevice;
+extern int snd_MaxVolume;
+extern int snd_MusicVolume;
+extern int snd_Channels;
+
+extern int startepisode;
+extern int startmap;
+
+int AmbChan;
+
+void S_Start(void)
+{
+ int i;
+
+ S_StartSong((gameepisode - 1) * 9 + gamemap - 1, true);
+
+ //stop all sounds
+ for (i = 0; i < snd_Channels; i++)
+ {
+ if (channel[i].handle)
+ {
+ S_StopSound(channel[i].mo);
+ }
+ }
+ memset(channel, 0, 8 * sizeof(channel_t));
+}
+
+void S_StartSong(int song, boolean loop)
+{
+ if (song == mus_song)
+ { // don't replay an old song
+ return;
+ }
+ if (rs)
+ {
+ I_StopSong(rs);
+ I_UnRegisterSong(rs);
+ Z_ChangeTag(lumpcache[mus_lumpnum], PU_CACHE);
+#ifdef __WATCOMC__
+ _dpmi_unlockregion(mus_sndptr, lumpinfo[mus_lumpnum].size);
+#endif
+ }
+ if (song < mus_e1m1 || song > NUMMUSIC)
+ {
+ return;
+ }
+ mus_lumpnum = W_GetNumForName(S_music[song].name);
+ mus_sndptr = W_CacheLumpNum(mus_lumpnum, PU_MUSIC);
+#ifdef __WATCOMC__
+ _dpmi_lockregion(mus_sndptr, lumpinfo[mus_lumpnum].size);
+#endif
+ rs = I_RegisterSong(mus_sndptr);
+ I_PlaySong(rs, loop); //'true' denotes endless looping.
+ mus_song = song;
+}
+
+void S_StartSound(mobj_t * origin, int sound_id)
+{
+ int dist, vol;
+ int i;
+ int sound;
+ int priority;
+ int sep;
+ int angle;
+ int absx;
+ int absy;
+
+ static int sndcount = 0;
+ int chan;
+
+ if (sound_id == 0 || snd_MaxVolume == 0)
+ return;
+ if (origin == NULL)
+ {
+ origin = players[consoleplayer].mo;
+ }
+
+// calculate the distance before other stuff so that we can throw out
+// sounds that are beyond the hearing range.
+ absx = abs(origin->x - players[consoleplayer].mo->x);
+ absy = abs(origin->y - players[consoleplayer].mo->y);
+ dist = absx + absy - (absx > absy ? absy >> 1 : absx >> 1);
+ dist >>= FRACBITS;
+// dist = P_AproxDistance(origin->x-viewx, origin->y-viewy)>>FRACBITS;
+
+ if (dist >= MAX_SND_DIST)
+ {
+// dist = MAX_SND_DIST - 1;
+ return; //sound is beyond the hearing range...
+ }
+ if (dist < 0)
+ {
+ dist = 0;
+ }
+ priority = S_sfx[sound_id].priority;
+ priority *= (10 - (dist / 160));
+ if (!S_StopSoundID(sound_id, priority))
+ {
+ return; // other sounds have greater priority
+ }
+ for (i = 0; i < snd_Channels; i++)
+ {
+ if (origin->player)
+ {
+ i = snd_Channels;
+ break; // let the player have more than one sound.
+ }
+ if (origin == channel[i].mo)
+ { // only allow other mobjs one sound
+ S_StopSound(channel[i].mo);
+ break;
+ }
+ }
+ if (i >= snd_Channels)
+ {
+ if (sound_id >= sfx_wind)
+ {
+ if (AmbChan != -1 && S_sfx[sound_id].priority <=
+ S_sfx[channel[AmbChan].sound_id].priority)
+ {
+ return; //ambient channel already in use
+ }
+ else
+ {
+ AmbChan = -1;
+ }
+ }
+ for (i = 0; i < snd_Channels; i++)
+ {
+ if (channel[i].mo == NULL)
+ {
+ break;
+ }
+ }
+ if (i >= snd_Channels)
+ {
+ //look for a lower priority sound to replace.
+ sndcount++;
+ if (sndcount >= snd_Channels)
+ {
+ sndcount = 0;
+ }
+ for (chan = 0; chan < snd_Channels; chan++)
+ {
+ i = (sndcount + chan) % snd_Channels;
+ if (priority >= channel[i].priority)
+ {
+ chan = -1; //denote that sound should be replaced.
+ break;
+ }
+ }
+ if (chan != -1)
+ {
+ return; //no free channels.
+ }
+ else //replace the lower priority sound.
+ {
+ if (channel[i].handle)
+ {
+ if (I_SoundIsPlaying(channel[i].handle))
+ {
+ I_StopSound(channel[i].handle);
+ }
+ if (S_sfx[channel[i].sound_id].usefulness > 0)
+ {
+ S_sfx[channel[i].sound_id].usefulness--;
+ }
+
+ if (AmbChan == i)
+ {
+ AmbChan = -1;
+ }
+ }
+ }
+ }
+ }
+ if (S_sfx[sound_id].lumpnum == 0)
+ {
+ S_sfx[sound_id].lumpnum = I_GetSfxLumpNum(&S_sfx[sound_id]);
+ }
+ if (S_sfx[sound_id].snd_ptr == NULL)
+ {
+ S_sfx[sound_id].snd_ptr = W_CacheLumpNum(S_sfx[sound_id].lumpnum,
+ PU_SOUND);
+#ifdef __WATCOMC__
+ _dpmi_lockregion(S_sfx[sound_id].snd_ptr,
+ lumpinfo[S_sfx[sound_id].lumpnum].size);
+#endif
+ }
+
+ // calculate the volume based upon the distance from the sound origin.
+// vol = (snd_MaxVolume*16 + dist*(-snd_MaxVolume*16)/MAX_SND_DIST)>>9;
+ vol = soundCurve[dist];
+
+ if (origin == players[consoleplayer].mo)
+ {
+ sep = 128;
+ }
+ else
+ {
+ angle = R_PointToAngle2(players[consoleplayer].mo->x,
+ players[consoleplayer].mo->y,
+ channel[i].mo->x, channel[i].mo->y);
+ angle = (angle - viewangle) >> 24;
+ sep = angle * 2 - 128;
+ if (sep < 64)
+ sep = -sep;
+ if (sep > 192)
+ sep = 512 - sep;
+ }
+
+ channel[i].pitch = (byte) (127 + (M_Random() & 7) - (M_Random() & 7));
+ channel[i].handle =
+ I_StartSound(sound_id, S_sfx[sound_id].snd_ptr, vol, sep,
+ channel[i].pitch, 0);
+ channel[i].mo = origin;
+ channel[i].sound_id = sound_id;
+ channel[i].priority = priority;
+ if (sound_id >= sfx_wind)
+ {
+ AmbChan = i;
+ }
+ if (S_sfx[sound_id].usefulness == -1)
+ {
+ S_sfx[sound_id].usefulness = 1;
+ }
+ else
+ {
+ S_sfx[sound_id].usefulness++;
+ }
+}
+
+void S_StartSoundAtVolume(mobj_t * origin, int sound_id, int volume)
+{
+ int dist;
+ int i;
+ int sep;
+
+ static int sndcount;
+ int chan;
+
+ if (sound_id == 0 || snd_MaxVolume == 0)
+ return;
+ if (origin == NULL)
+ {
+ origin = players[consoleplayer].mo;
+ }
+
+ if (volume == 0)
+ {
+ return;
+ }
+ volume = (volume * (snd_MaxVolume + 1) * 8) >> 7;
+
+// no priority checking, as ambient sounds would be the LOWEST.
+ for (i = 0; i < snd_Channels; i++)
+ {
+ if (channel[i].mo == NULL)
+ {
+ break;
+ }
+ }
+ if (i >= snd_Channels)
+ {
+ return;
+ }
+ if (S_sfx[sound_id].lumpnum == 0)
+ {
+ S_sfx[sound_id].lumpnum = I_GetSfxLumpNum(&S_sfx[sound_id]);
+ }
+ if (S_sfx[sound_id].snd_ptr == NULL)
+ {
+ S_sfx[sound_id].snd_ptr = W_CacheLumpNum(S_sfx[sound_id].lumpnum,
+ PU_SOUND);
+#ifdef __WATCOMC__
+ _dpmi_lockregion(S_sfx[sound_id].snd_ptr,
+ lumpinfo[S_sfx[sound_id].lumpnum].size);
+#endif
+ }
+ channel[i].pitch = (byte) (127 - (M_Random() & 3) + (M_Random() & 3));
+ channel[i].handle =
+ I_StartSound(sound_id, S_sfx[sound_id].snd_ptr, volume, 128,
+ channel[i].pitch, 0);
+ channel[i].mo = origin;
+ channel[i].sound_id = sound_id;
+ channel[i].priority = 1; //super low priority.
+ if (S_sfx[sound_id].usefulness == -1)
+ {
+ S_sfx[sound_id].usefulness = 1;
+ }
+ else
+ {
+ S_sfx[sound_id].usefulness++;
+ }
+}
+
+boolean S_StopSoundID(int sound_id, int priority)
+{
+ int i;
+ int lp; //least priority
+ int found;
+
+ if (S_sfx[sound_id].numchannels == -1)
+ {
+ return (true);
+ }
+ lp = -1; //denote the argument sound_id
+ found = 0;
+ for (i = 0; i < snd_Channels; i++)
+ {
+ if (channel[i].sound_id == sound_id && channel[i].mo)
+ {
+ found++; //found one. Now, should we replace it??
+ if (priority >= channel[i].priority)
+ { // if we're gonna kill one, then this'll be it
+ lp = i;
+ priority = channel[i].priority;
+ }
+ }
+ }
+ if (found < S_sfx[sound_id].numchannels)
+ {
+ return (true);
+ }
+ else if (lp == -1)
+ {
+ return (false); // don't replace any sounds
+ }
+ if (channel[lp].handle)
+ {
+ if (I_SoundIsPlaying(channel[lp].handle))
+ {
+ I_StopSound(channel[lp].handle);
+ }
+ if (S_sfx[channel[i].sound_id].usefulness > 0)
+ {
+ S_sfx[channel[i].sound_id].usefulness--;
+ }
+ channel[lp].mo = NULL;
+ }
+ return (true);
+}
+
+void S_StopSound(mobj_t * origin)
+{
+ int i;
+
+ for (i = 0; i < snd_Channels; i++)
+ {
+ if (channel[i].mo == origin)
+ {
+ I_StopSound(channel[i].handle);
+ if (S_sfx[channel[i].sound_id].usefulness > 0)
+ {
+ S_sfx[channel[i].sound_id].usefulness--;
+ }
+ channel[i].handle = 0;
+ channel[i].mo = NULL;
+ if (AmbChan == i)
+ {
+ AmbChan = -1;
+ }
+ }
+ }
+}
+
+void S_SoundLink(mobj_t * oldactor, mobj_t * newactor)
+{
+ int i;
+
+ for (i = 0; i < snd_Channels; i++)
+ {
+ if (channel[i].mo == oldactor)
+ channel[i].mo = newactor;
+ }
+}
+
+void S_PauseSound(void)
+{
+ I_PauseSong(rs);
+}
+
+void S_ResumeSound(void)
+{
+ I_ResumeSong(rs);
+}
+
+static int nextcleanup;
+
+void S_UpdateSounds(mobj_t * listener)
+{
+ int i, dist, vol;
+ int angle;
+ int sep;
+ int priority;
+ int absx;
+ int absy;
+
+ listener = players[consoleplayer].mo;
+ if (snd_MaxVolume == 0)
+ {
+ return;
+ }
+ if (nextcleanup < gametic)
+ {
+ for (i = 0; i < NUMSFX; i++)
+ {
+ if (S_sfx[i].usefulness == 0 && S_sfx[i].snd_ptr)
+ {
+ if (lumpcache[S_sfx[i].lumpnum])
+ {
+ if (((memblock_t
+ *) ((byte *) (lumpcache[S_sfx[i].lumpnum]) -
+ sizeof(memblock_t)))->id == 0x1d4a11)
+ { // taken directly from the Z_ChangeTag macro
+ Z_ChangeTag2(lumpcache[S_sfx[i].lumpnum], PU_CACHE);
+#ifdef __WATCOMC__
+ _dpmi_unlockregion(S_sfx[i].snd_ptr,
+ lumpinfo[S_sfx[i].lumpnum].size);
+#endif
+ }
+ }
+ S_sfx[i].usefulness = -1;
+ S_sfx[i].snd_ptr = NULL;
+ }
+ }
+ nextcleanup = gametic + 35; //CLEANUP DEBUG cleans every second
+ }
+ for (i = 0; i < snd_Channels; i++)
+ {
+ if (!channel[i].handle || S_sfx[channel[i].sound_id].usefulness == -1)
+ {
+ continue;
+ }
+ if (!I_SoundIsPlaying(channel[i].handle))
+ {
+ if (S_sfx[channel[i].sound_id].usefulness > 0)
+ {
+ S_sfx[channel[i].sound_id].usefulness--;
+ }
+ channel[i].handle = 0;
+ channel[i].mo = NULL;
+ channel[i].sound_id = 0;
+ if (AmbChan == i)
+ {
+ AmbChan = -1;
+ }
+ }
+ if (channel[i].mo == NULL || channel[i].sound_id == 0
+ || channel[i].mo == players[consoleplayer].mo)
+ {
+ continue;
+ }
+ else
+ {
+ absx = abs(channel[i].mo->x - players[consoleplayer].mo->x);
+ absy = abs(channel[i].mo->y - players[consoleplayer].mo->y);
+ dist = absx + absy - (absx > absy ? absy >> 1 : absx >> 1);
+ dist >>= FRACBITS;
+// dist = P_AproxDistance(channel[i].mo->x-listener->x, channel[i].mo->y-listener->y)>>FRACBITS;
+
+ if (dist >= MAX_SND_DIST)
+ {
+ S_StopSound(channel[i].mo);
+ continue;
+ }
+ if (dist < 0)
+ dist = 0;
+
+// calculate the volume based upon the distance from the sound origin.
+// vol = (*((byte *)W_CacheLumpName("SNDCURVE", PU_CACHE)+dist)*(snd_MaxVolume*8))>>7;
+ vol = soundCurve[dist];
+
+ angle = R_PointToAngle2(players[consoleplayer].mo->x,
+ players[consoleplayer].mo->y,
+ channel[i].mo->x, channel[i].mo->y);
+ angle = (angle - viewangle) >> 24;
+ sep = angle * 2 - 128;
+ if (sep < 64)
+ sep = -sep;
+ if (sep > 192)
+ sep = 512 - sep;
+ I_UpdateSoundParams(channel[i].handle, vol, sep,
+ channel[i].pitch);
+ priority = S_sfx[channel[i].sound_id].priority;
+ priority *= (10 - (dist >> 8));
+ channel[i].priority = priority;
+ }
+ }
+}
+
+void S_Init(void)
+{
+ soundCurve = Z_Malloc(MAX_SND_DIST, PU_STATIC, NULL);
+ I_StartupSound();
+ if (snd_Channels > 8)
+ {
+ snd_Channels = 8;
+ }
+ I_SetChannels(snd_Channels);
+ I_SetMusicVolume(snd_MusicVolume);
+ S_SetMaxVolume(true);
+}
+
+void S_GetChannelInfo(SoundInfo_t * s)
+{
+ int i;
+ ChanInfo_t *c;
+
+ s->channelCount = snd_Channels;
+ s->musicVolume = snd_MusicVolume;
+ s->soundVolume = snd_MaxVolume;
+ for (i = 0; i < snd_Channels; i++)
+ {
+ c = &s->chan[i];
+ c->id = channel[i].sound_id;
+ c->priority = channel[i].priority;
+ c->name = S_sfx[c->id].name;
+ c->mo = channel[i].mo;
+ c->distance = P_AproxDistance(c->mo->x - viewx, c->mo->y - viewy)
+ >> FRACBITS;
+ }
+}
+
+void S_SetMaxVolume(boolean fullprocess)
+{
+ int i;
+
+ if (!fullprocess)
+ {
+ soundCurve[0] =
+ (*((byte *) W_CacheLumpName("SNDCURVE", PU_CACHE)) *
+ (snd_MaxVolume * 8)) >> 7;
+ }
+ else
+ {
+ for (i = 0; i < MAX_SND_DIST; i++)
+ {
+ soundCurve[i] =
+ (*((byte *) W_CacheLumpName("SNDCURVE", PU_CACHE) + i) *
+ (snd_MaxVolume * 8)) >> 7;
+ }
+ }
+}
+
+static boolean musicPaused;
+void S_SetMusicVolume(void)
+{
+ I_SetMusicVolume(snd_MusicVolume);
+ if (snd_MusicVolume == 0)
+ {
+ I_PauseSong(rs);
+ musicPaused = true;
+ }
+ else if (musicPaused)
+ {
+ musicPaused = false;
+ I_ResumeSong(rs);
+ }
+}
+
+void S_ShutDown(void)
+{
+ extern int tsm_ID;
+ if (tsm_ID != -1)
+ {
+ I_StopSong(rs);
+ I_UnRegisterSong(rs);
+ I_ShutdownSound();
+ }
+}
+
+/*
+=============================================================================
+
+ CONSTANTS
+
+=============================================================================
+*/
+
+#define SC_INDEX 0x3C4
+#define SC_RESET 0
+#define SC_CLOCK 1
+#define SC_MAPMASK 2
+#define SC_CHARMAP 3
+#define SC_MEMMODE 4
+
+#define CRTC_INDEX 0x3D4
+#define CRTC_H_TOTAL 0
+#define CRTC_H_DISPEND 1
+#define CRTC_H_BLANK 2
+#define CRTC_H_ENDBLANK 3
+#define CRTC_H_RETRACE 4
+#define CRTC_H_ENDRETRACE 5
+#define CRTC_V_TOTAL 6
+#define CRTC_OVERFLOW 7
+#define CRTC_ROWSCAN 8
+#define CRTC_MAXSCANLINE 9
+#define CRTC_CURSORSTART 10
+#define CRTC_CURSOREND 11
+#define CRTC_STARTHIGH 12
+#define CRTC_STARTLOW 13
+#define CRTC_CURSORHIGH 14
+#define CRTC_CURSORLOW 15
+#define CRTC_V_RETRACE 16
+#define CRTC_V_ENDRETRACE 17
+#define CRTC_V_DISPEND 18
+#define CRTC_OFFSET 19
+#define CRTC_UNDERLINE 20
+#define CRTC_V_BLANK 21
+#define CRTC_V_ENDBLANK 22
+#define CRTC_MODE 23
+#define CRTC_LINECOMPARE 24
+
+
+#define GC_INDEX 0x3CE
+#define GC_SETRESET 0
+#define GC_ENABLESETRESET 1
+#define GC_COLORCOMPARE 2
+#define GC_DATAROTATE 3
+#define GC_READMAP 4
+#define GC_MODE 5
+#define GC_MISCELLANEOUS 6
+#define GC_COLORDONTCARE 7
+#define GC_BITMASK 8
+
+#define ATR_INDEX 0x3c0
+#define ATR_MODE 16
+#define ATR_OVERSCAN 17
+#define ATR_COLORPLANEENABLE 18
+#define ATR_PELPAN 19
+#define ATR_COLORSELECT 20
+
+#define STATUS_REGISTER_1 0x3da
+
+#define PEL_WRITE_ADR 0x3c8
+#define PEL_READ_ADR 0x3c7
+#define PEL_DATA 0x3c9
+#define PEL_MASK 0x3c6
+
+boolean grmode;
+
+//==================================================
+//
+// joystick vars
+//
+//==================================================
+
+boolean joystickpresent;
+extern unsigned joystickx, joysticky;
+boolean I_ReadJoystick(void); // returns false if not connected
+
+
+//==================================================
+
+#define VBLCOUNTER 34000 // hardware tics to a frame
+
+
+#define TIMERINT 8
+#define KEYBOARDINT 9
+
+#define CRTCOFF (_inbyte(STATUS_REGISTER_1)&1)
+#define CLI _disable()
+#define STI _enable()
+
+#define _outbyte(x,y) (outp(x,y))
+#define _outhword(x,y) (outpw(x,y))
+
+#define _inbyte(x) (inp(x))
+#define _inhword(x) (inpw(x))
+
+#define MOUSEB1 1
+#define MOUSEB2 2
+#define MOUSEB3 4
+
+boolean mousepresent;
+//static int tsm_ID = -1; // tsm init flag
+
+//===============================
+
+int ticcount;
+
+// REGS stuff used for int calls
+union REGS regs;
+struct SREGS segregs;
+
+boolean novideo; // if true, stay in text mode for debugging
+
+#define KBDQUESIZE 32
+byte keyboardque[KBDQUESIZE];
+int kbdtail, kbdhead;
+
+#define KEY_LSHIFT 0xfe
+
+#define KEY_INS (0x80+0x52)
+#define KEY_DEL (0x80+0x53)
+#define KEY_PGUP (0x80+0x49)
+#define KEY_PGDN (0x80+0x51)
+#define KEY_HOME (0x80+0x47)
+#define KEY_END (0x80+0x4f)
+
+#define SC_RSHIFT 0x36
+#define SC_LSHIFT 0x2a
+
+byte scantokey[128] = {
+// 0 1 2 3 4 5 6 7
+// 8 9 A B C D E F
+ 0, 27, '1', '2', '3', '4', '5', '6',
+ '7', '8', '9', '0', '-', '=', KEY_BACKSPACE, 9, // 0
+ 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i',
+ 'o', 'p', '[', ']', 13, KEY_RCTRL, 'a', 's', // 1
+ 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';',
+ 39, '`', KEY_LSHIFT, 92, 'z', 'x', 'c', 'v', // 2
+ 'b', 'n', 'm', ',', '.', '/', KEY_RSHIFT, '*',
+ KEY_RALT, ' ', 0, KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5, // 3
+ KEY_F6, KEY_F7, KEY_F8, KEY_F9, KEY_F10, 0, 0, KEY_HOME,
+ KEY_UPARROW, KEY_PGUP, '-', KEY_LEFTARROW, '5', KEY_RIGHTARROW, '+', KEY_END, //4
+ KEY_DOWNARROW, KEY_PGDN, KEY_INS, KEY_DEL, 0, 0, 0, KEY_F11,
+ KEY_F12, 0, 0, 0, 0, 0, 0, 0, // 5
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, // 6
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0 // 7
+};
+
+//==========================================================================
+
+//--------------------------------------------------------------------------
+//
+// FUNC I_GetTime
+//
+// Returns time in 1/35th second tics.
+//
+//--------------------------------------------------------------------------
+
+int I_GetTime(void)
+{
+#ifdef NOTIMER
+ ticcount++;
+#endif
+ return (ticcount);
+}
+
+//--------------------------------------------------------------------------
+//
+// PROC I_ColorBorder
+//
+//--------------------------------------------------------------------------
+
+void I_ColorBorder(void)
+{
+ int i;
+
+ I_WaitVBL(1);
+ _outbyte(PEL_WRITE_ADR, 0);
+ for (i = 0; i < 3; i++)
+ {
+ _outbyte(PEL_DATA, 63);
+ }
+}
+
+//--------------------------------------------------------------------------
+//
+// PROC I_UnColorBorder
+//
+//--------------------------------------------------------------------------
+
+void I_UnColorBorder(void)
+{
+ int i;
+
+ I_WaitVBL(1);
+ _outbyte(PEL_WRITE_ADR, 0);
+ for (i = 0; i < 3; i++)
+ {
+ _outbyte(PEL_DATA, 0);
+ }
+}
+
+/*
+============================================================================
+
+ USER INPUT
+
+============================================================================
+*/
+
+//--------------------------------------------------------------------------
+//
+// PROC I_WaitVBL
+//
+//--------------------------------------------------------------------------
+
+void I_WaitVBL(int vbls)
+{
+ int i;
+ int old;
+ int stat;
+
+ if (novideo)
+ {
+ return;
+ }
+ while (vbls--)
+ {
+ do
+ {
+ stat = inp(STATUS_REGISTER_1);
+ if (stat & 8)
+ {
+ break;
+ }
+ }
+ while (1);
+ do
+ {
+ stat = inp(STATUS_REGISTER_1);
+ if ((stat & 8) == 0)
+ {
+ break;
+ }
+ }
+ while (1);
+ }
+}
+
+//--------------------------------------------------------------------------
+//
+// PROC I_SetPalette
+//
+// Palette source must use 8 bit RGB elements.
+//
+//--------------------------------------------------------------------------
+
+void I_SetPalette(byte * palette)
+{
+ int i;
+
+ if (novideo)
+ {
+ return;
+ }
+ I_WaitVBL(1);
+ _outbyte(PEL_WRITE_ADR, 0);
+ for (i = 0; i < 768; i++)
+ {
+ _outbyte(PEL_DATA, (gammatable[usegamma][*palette++]) >> 2);
+ }
+}
+
+/*
+============================================================================
+
+ GRAPHICS MODE
+
+============================================================================
+*/
+
+byte *pcscreen, *destscreen, *destview;
+
+
+/*
+==============
+=
+= I_Update
+=
+==============
+*/
+
+int UpdateState;
+extern int screenblocks;
+
+void I_Update(void)
+{
+ int i;
+ byte *dest;
+ int tics;
+ static int lasttic;
+
+//
+// blit screen to video
+//
+ if (DisplayTicker)
+ {
+ if (screenblocks > 9 || UpdateState & (I_FULLSCRN | I_MESSAGES))
+ {
+ dest = (byte *) screen;
+ }
+ else
+ {
+ dest = (byte *) pcscreen;
+ }
+ tics = ticcount - lasttic;
+ lasttic = ticcount;
+ if (tics > 20)
+ {
+ tics = 20;
+ }
+ for (i = 0; i < tics; i++)
+ {
+ *dest = 0xff;
+ dest += 2;
+ }
+ for (i = tics; i < 20; i++)
+ {
+ *dest = 0x00;
+ dest += 2;
+ }
+ }
+ if (UpdateState == I_NOUPDATE)
+ {
+ return;
+ }
+ if (UpdateState & I_FULLSCRN)
+ {
+ memcpy(pcscreen, screen, SCREENWIDTH * SCREENHEIGHT);
+ UpdateState = I_NOUPDATE; // clear out all draw types
+ }
+ if (UpdateState & I_FULLVIEW)
+ {
+ if (UpdateState & I_MESSAGES && screenblocks > 7)
+ {
+ for (i = 0; i <
+ (viewwindowy + viewheight) * SCREENWIDTH; i += SCREENWIDTH)
+ {
+ memcpy(pcscreen + i, screen + i, SCREENWIDTH);
+ }
+ UpdateState &= ~(I_FULLVIEW | I_MESSAGES);
+ }
+ else
+ {
+ for (i = viewwindowy * SCREENWIDTH + viewwindowx; i <
+ (viewwindowy + viewheight) * SCREENWIDTH; i += SCREENWIDTH)
+ {
+ memcpy(pcscreen + i, screen + i, viewwidth);
+ }
+ UpdateState &= ~I_FULLVIEW;
+ }
+ }
+ if (UpdateState & I_STATBAR)
+ {
+ memcpy(pcscreen + SCREENWIDTH * (SCREENHEIGHT - SBARHEIGHT),
+ screen + SCREENWIDTH * (SCREENHEIGHT - SBARHEIGHT),
+ SCREENWIDTH * SBARHEIGHT);
+ UpdateState &= ~I_STATBAR;
+ }
+ if (UpdateState & I_MESSAGES)
+ {
+ memcpy(pcscreen, screen, SCREENWIDTH * 28);
+ UpdateState &= ~I_MESSAGES;
+ }
+
+// memcpy(pcscreen, screen, SCREENHEIGHT*SCREENWIDTH);
+}
+
+//--------------------------------------------------------------------------
+//
+// PROC I_InitGraphics
+//
+//--------------------------------------------------------------------------
+
+void I_InitGraphics(void)
+{
+ if (novideo)
+ {
+ return;
+ }
+ grmode = true;
+ regs.w.ax = 0x13;
+ int386(0x10, (const union REGS *) &regs, &regs);
+ pcscreen = destscreen = (byte *) 0xa0000;
+ I_SetPalette(W_CacheLumpName("PLAYPAL", PU_CACHE));
+ I_InitDiskFlash();
+}
+
+//--------------------------------------------------------------------------
+//
+// PROC I_ShutdownGraphics
+//
+//--------------------------------------------------------------------------
+
+void I_ShutdownGraphics(void)
+{
+
+ if (*(byte *) 0x449 == 0x13) // don't reset mode if it didn't get set
+ {
+ regs.w.ax = 3;
+ int386(0x10, &regs, &regs); // back to text mode
+ }
+}
+
+//--------------------------------------------------------------------------
+//
+// PROC I_ReadScreen
+//
+// Reads the screen currently displayed into a linear buffer.
+//
+//--------------------------------------------------------------------------
+
+void I_ReadScreen(byte * scr)
+{
+ memcpy(scr, screen, SCREENWIDTH * SCREENHEIGHT);
+}
+
+
+//===========================================================================
+
+/*
+===================
+=
+= I_StartTic
+=
+// called by D_DoomLoop
+// called before processing each tic in a frame
+// can call D_PostEvent
+// asyncronous interrupt functions should maintain private ques that are
+// read by the syncronous functions to be converted into events
+===================
+*/
+
+/*
+ OLD STARTTIC STUFF
+
+void I_StartTic (void)
+{
+ int k;
+ event_t ev;
+
+
+ I_ReadMouse ();
+
+//
+// keyboard events
+//
+ while (kbdtail < kbdhead)
+ {
+ k = keyboardque[kbdtail&(KBDQUESIZE-1)];
+
+// if (k==14)
+// I_Error ("exited");
+
+ kbdtail++;
+
+ // extended keyboard shift key bullshit
+ if ( (k&0x7f)==KEY_RSHIFT )
+ {
+ if ( keyboardque[(kbdtail-2)&(KBDQUESIZE-1)]==0xe0 )
+ continue;
+ k &= 0x80;
+ k |= KEY_RSHIFT;
+ }
+
+ if (k==0xe0)
+ continue; // special / pause keys
+ if (keyboardque[(kbdtail-2)&(KBDQUESIZE-1)] == 0xe1)
+ continue; // pause key bullshit
+
+ if (k==0xc5 && keyboardque[(kbdtail-2)&(KBDQUESIZE-1)] == 0x9d)
+ {
+ ev.type = ev_keydown;
+ ev.data1 = KEY_PAUSE;
+ D_PostEvent (&ev);
+ continue;
+ }
+
+ if (k&0x80)
+ ev.type = ev_keyup;
+ else
+ ev.type = ev_keydown;
+ k &= 0x7f;
+
+ ev.data1 = k;
+ //ev.data1 = scantokey[k];
+
+ D_PostEvent (&ev);
+ }
+}
+*/
+
+#define SC_UPARROW 0x48
+#define SC_DOWNARROW 0x50
+#define SC_LEFTARROW 0x4b
+#define SC_RIGHTARROW 0x4d
+
+void I_StartTic(void)
+{
+ int k;
+ event_t ev;
+
+
+ I_ReadMouse();
+
+//
+// keyboard events
+//
+ while (kbdtail < kbdhead)
+ {
+ k = keyboardque[kbdtail & (KBDQUESIZE - 1)];
+ kbdtail++;
+
+ // extended keyboard shift key bullshit
+ if ((k & 0x7f) == SC_LSHIFT || (k & 0x7f) == SC_RSHIFT)
+ {
+ if (keyboardque[(kbdtail - 2) & (KBDQUESIZE - 1)] == 0xe0)
+ continue;
+ k &= 0x80;
+ k |= SC_RSHIFT;
+ }
+
+ if (k == 0xe0)
+ continue; // special / pause keys
+ if (keyboardque[(kbdtail - 2) & (KBDQUESIZE - 1)] == 0xe1)
+ continue; // pause key bullshit
+
+ if (k == 0xc5
+ && keyboardque[(kbdtail - 2) & (KBDQUESIZE - 1)] == 0x9d)
+ {
+ ev.type = ev_keydown;
+ ev.data1 = KEY_PAUSE;
+ D_PostEvent(&ev);
+ continue;
+ }
+
+ if (k & 0x80)
+ ev.type = ev_keyup;
+ else
+ ev.type = ev_keydown;
+ k &= 0x7f;
+ switch (k)
+ {
+ case SC_UPARROW:
+ ev.data1 = KEY_UPARROW;
+ break;
+ case SC_DOWNARROW:
+ ev.data1 = KEY_DOWNARROW;
+ break;
+ case SC_LEFTARROW:
+ ev.data1 = KEY_LEFTARROW;
+ break;
+ case SC_RIGHTARROW:
+ ev.data1 = KEY_RIGHTARROW;
+ break;
+ default:
+ ev.data1 = scantokey[k];
+ break;
+ }
+ D_PostEvent(&ev);
+ }
+
+}
+
+
+void I_ReadKeys(void)
+{
+ int k;
+ event_t ev;
+
+
+ while (1)
+ {
+ while (kbdtail < kbdhead)
+ {
+ k = keyboardque[kbdtail & (KBDQUESIZE - 1)];
+ kbdtail++;
+ printf("0x%x\n", k);
+ if (k == 1)
+ I_Quit();
+ }
+ }
+}
+
+/*
+===============
+=
+= I_StartFrame
+=
+===============
+*/
+
+void I_StartFrame(void)
+{
+ I_JoystickEvents();
+ I_ReadExternDriver();
+}
+
+/*
+============================================================================
+
+ TIMER INTERRUPT
+
+============================================================================
+*/
+
+void I_ColorBlack(int r, int g, int b)
+{
+ _outbyte(PEL_WRITE_ADR, 0);
+ _outbyte(PEL_DATA, r);
+ _outbyte(PEL_DATA, g);
+ _outbyte(PEL_DATA, b);
+}
+
+
+/*
+================
+=
+= I_TimerISR
+=
+================
+*/
+
+int I_TimerISR(void)
+{
+ ticcount++;
+ return 0;
+}
+
+/*
+============================================================================
+
+ KEYBOARD
+
+============================================================================
+*/
+
+void (__interrupt __far * oldkeyboardisr) () = NULL;
+
+int lastpress;
+
+/*
+================
+=
+= I_KeyboardISR
+=
+================
+*/
+
+void __interrupt I_KeyboardISR(void)
+{
+// Get the scan code
+
+ keyboardque[kbdhead & (KBDQUESIZE - 1)] = lastpress = _inbyte(0x60);
+ kbdhead++;
+
+// acknowledge the interrupt
+
+ _outbyte(0x20, 0x20);
+}
+
+
+
+/*
+===============
+=
+= I_StartupKeyboard
+=
+===============
+*/
+
+void I_StartupKeyboard(void)
+{
+#ifndef NOKBD
+ oldkeyboardisr = _dos_getvect(KEYBOARDINT);
+ _dos_setvect(0x8000 | KEYBOARDINT, I_KeyboardISR);
+#endif
+
+//I_ReadKeys ();
+}
+
+
+void I_ShutdownKeyboard(void)
+{
+ if (oldkeyboardisr)
+ _dos_setvect(KEYBOARDINT, oldkeyboardisr);
+ *(short *) 0x41c = *(short *) 0x41a; // clear bios key buffer
+}
+
+
+
+/*
+============================================================================
+
+ MOUSE
+
+============================================================================
+*/
+
+
+int I_ResetMouse(void)
+{
+ regs.w.ax = 0; // reset
+ int386(0x33, &regs, &regs);
+ return regs.w.ax;
+}
+
+
+
+/*
+================
+=
+= StartupMouse
+=
+================
+*/
+
+void I_StartupCyberMan(void);
+
+void I_StartupMouse(void)
+{
+ int (far * function) ();
+
+ //
+ // General mouse detection
+ //
+ mousepresent = 0;
+ if (M_CheckParm("-nomouse") || !usemouse)
+ return;
+
+ if (I_ResetMouse() != 0xffff)
+ {
+ tprintf("Mouse: not present ", 0);
+ return;
+ }
+ tprintf("Mouse: detected ", 0);
+
+ mousepresent = 1;
+
+ I_StartupCyberMan();
+}
+
+
+/*
+================
+=
+= ShutdownMouse
+=
+================
+*/
+
+void I_ShutdownMouse(void)
+{
+ if (!mousepresent)
+ return;
+
+ I_ResetMouse();
+}
+
+
+/*
+================
+=
+= I_ReadMouse
+=
+================
+*/
+
+void I_ReadMouse(void)
+{
+ event_t ev;
+
+//
+// mouse events
+//
+ if (!mousepresent)
+ return;
+
+ ev.type = ev_mouse;
+
+ memset(&dpmiregs, 0, sizeof(dpmiregs));
+ dpmiregs.eax = 3; // read buttons / position
+ DPMIInt(0x33);
+ ev.data1 = dpmiregs.ebx;
+
+ dpmiregs.eax = 11; // read counters
+ DPMIInt(0x33);
+ ev.data2 = (short) dpmiregs.ecx;
+ ev.data3 = -(short) dpmiregs.edx;
+
+ D_PostEvent(&ev);
+}
+
+/*
+============================================================================
+
+ JOYSTICK
+
+============================================================================
+*/
+
+int joyxl, joyxh, joyyl, joyyh;
+
+boolean WaitJoyButton(void)
+{
+ int oldbuttons, buttons;
+
+ oldbuttons = 0;
+ do
+ {
+ I_WaitVBL(1);
+ buttons = ((inp(0x201) >> 4) & 1) ^ 1;
+ if (buttons != oldbuttons)
+ {
+ oldbuttons = buttons;
+ continue;
+ }
+
+ if ((lastpress & 0x7f) == 1)
+ {
+ joystickpresent = false;
+ return false;
+ }
+ }
+ while (!buttons);
+
+ do
+ {
+ I_WaitVBL(1);
+ buttons = ((inp(0x201) >> 4) & 1) ^ 1;
+ if (buttons != oldbuttons)
+ {
+ oldbuttons = buttons;
+ continue;
+ }
+
+ if ((lastpress & 0x7f) == 1)
+ {
+ joystickpresent = false;
+ return false;
+ }
+ }
+ while (buttons);
+
+ return true;
+}
+
+
+
+/*
+===============
+=
+= I_StartupJoystick
+=
+===============
+*/
+
+int basejoyx, basejoyy;
+
+void I_StartupJoystick(void)
+{
+ int buttons;
+ int count;
+ int centerx, centery;
+
+ joystickpresent = 0;
+ if (M_CheckParm("-nojoy") || !usejoystick)
+ return;
+
+ if (!I_ReadJoystick())
+ {
+ joystickpresent = false;
+ tprintf("joystick not found ", 0);
+ return;
+ }
+ printf("joystick found\n");
+ joystickpresent = true;
+
+ printf("CENTER the joystick and press button 1:");
+ if (!WaitJoyButton())
+ return;
+ I_ReadJoystick();
+ centerx = joystickx;
+ centery = joysticky;
+
+ printf
+ ("\nPush the joystick to the UPPER LEFT corner and press button 1:");
+ if (!WaitJoyButton())
+ return;
+ I_ReadJoystick();
+ joyxl = (centerx + joystickx) / 2;
+ joyyl = (centerx + joysticky) / 2;
+
+ printf
+ ("\nPush the joystick to the LOWER RIGHT corner and press button 1:");
+ if (!WaitJoyButton())
+ return;
+ I_ReadJoystick();
+ joyxh = (centerx + joystickx) / 2;
+ joyyh = (centery + joysticky) / 2;
+ printf("\n");
+}
+
+/*
+===============
+=
+= I_JoystickEvents
+=
+===============
+*/
+
+void I_JoystickEvents(void)
+{
+ event_t ev;
+
+//
+// joystick events
+//
+ if (!joystickpresent)
+ return;
+
+ I_ReadJoystick();
+ ev.type = ev_joystick;
+ ev.data1 = ((inp(0x201) >> 4) & 15) ^ 15;
+
+ if (joystickx < joyxl)
+ ev.data2 = -1;
+ else if (joystickx > joyxh)
+ ev.data2 = 1;
+ else
+ ev.data2 = 0;
+ if (joysticky < joyyl)
+ ev.data3 = -1;
+ else if (joysticky > joyyh)
+ ev.data3 = 1;
+ else
+ ev.data3 = 0;
+
+ D_PostEvent(&ev);
+}
+
+
+
+/*
+============================================================================
+
+ DPMI STUFF
+
+============================================================================
+*/
+
+#define REALSTACKSIZE 1024
+
+dpmiregs_t dpmiregs;
+
+unsigned realstackseg;
+
+void I_DivException(void);
+int I_SetDivException(void);
+
+void DPMIFarCall(void)
+{
+ segread(&segregs);
+ regs.w.ax = 0x301;
+ regs.w.bx = 0;
+ regs.w.cx = 0;
+ regs.x.edi = (unsigned) &dpmiregs;
+ segregs.es = segregs.ds;
+ int386x(DPMI_INT, &regs, &regs, &segregs);
+}
+
+
+void DPMIInt(int i)
+{
+ dpmiregs.ss = realstackseg;
+ dpmiregs.sp = REALSTACKSIZE - 4;
+
+ segread(&segregs);
+ regs.w.ax = 0x300;
+ regs.w.bx = i;
+ regs.w.cx = 0;
+ regs.x.edi = (unsigned) &dpmiregs;
+ segregs.es = segregs.ds;
+ int386x(DPMI_INT, &regs, &regs, &segregs);
+}
+
+
+/*
+==============
+=
+= I_StartupDPMI
+=
+==============
+*/
+
+void I_StartupDPMI(void)
+{
+ extern char __begtext;
+ extern char ___argc;
+ int n, d;
+
+//
+// allocate a decent stack for real mode ISRs
+//
+ realstackseg = (int) I_AllocLow(1024) >> 4;
+
+//
+// lock the entire program down
+//
+
+// _dpmi_lockregion (&__begtext, &___argc - &__begtext);
+
+
+//
+// catch divide by 0 exception
+//
+#if 0
+ segread(&segregs);
+ regs.w.ax = 0x0203; // DPMI set processor exception handler vector
+ regs.w.bx = 0; // int 0
+ regs.w.cx = segregs.cs;
+ regs.x.edx = (int) &I_DivException;
+ printf("%x : %x\n", regs.w.cx, regs.x.edx);
+ int386(DPMI_INT, &regs, &regs);
+#endif
+
+#if 0
+ n = I_SetDivException();
+ printf("return: %i\n", n);
+ n = 100;
+ d = 0;
+ printf("100 / 0 = %i\n", n / d);
+
+ exit(1);
+#endif
+}
+
+
+
+/*
+============================================================================
+
+ TIMER INTERRUPT
+
+============================================================================
+*/
+
+void (__interrupt __far * oldtimerisr) ();
+
+
+void IO_ColorBlack(int r, int g, int b)
+{
+ _outbyte(PEL_WRITE_ADR, 0);
+ _outbyte(PEL_DATA, r);
+ _outbyte(PEL_DATA, g);
+ _outbyte(PEL_DATA, b);
+}
+
+
+/*
+================
+=
+= IO_TimerISR
+=
+================
+*/
+
+//void __interrupt IO_TimerISR (void)
+
+void __interrupt __far IO_TimerISR(void)
+{
+ ticcount++;
+ _outbyte(0x20, 0x20); // Ack the interrupt
+}
+
+/*
+=====================
+=
+= IO_SetTimer0
+=
+= Sets system timer 0 to the specified speed
+=
+=====================
+*/
+
+void IO_SetTimer0(int speed)
+{
+ if (speed > 0 && speed < 150)
+ I_Error("INT_SetTimer0: %i is a bad value", speed);
+
+ _outbyte(0x43, 0x36); // Change timer 0
+ _outbyte(0x40, speed);
+ _outbyte(0x40, speed >> 8);
+}
+
+
+
+/*
+===============
+=
+= IO_StartupTimer
+=
+===============
+*/
+
+void IO_StartupTimer(void)
+{
+ oldtimerisr = _dos_getvect(TIMERINT);
+
+ _dos_setvect(0x8000 | TIMERINT, IO_TimerISR);
+ IO_SetTimer0(VBLCOUNTER);
+}
+
+void IO_ShutdownTimer(void)
+{
+ if (oldtimerisr)
+ {
+ IO_SetTimer0(0); // back to 18.4 ips
+ _dos_setvect(TIMERINT, oldtimerisr);
+ }
+}
+
+//===========================================================================
+
+
+/*
+===============
+=
+= I_Init
+=
+= hook interrupts and set graphics mode
+=
+===============
+*/
+
+void I_Init(void)
+{
+ extern void I_StartupTimer(void);
+
+ novideo = M_CheckParm("novideo");
+ tprintf("I_StartupDPMI", 1);
+ I_StartupDPMI();
+ tprintf("I_StartupMouse ", 1);
+ I_StartupMouse();
+// tprintf("I_StartupJoystick ",1);
+// I_StartupJoystick();
+// tprintf("I_StartupKeyboard ",1);
+// I_StartupKeyboard();
+ tprintf("S_Init... ", 1);
+ S_Init();
+ //IO_StartupTimer();
+ S_Start();
+}
+
+
+/*
+===============
+=
+= I_Shutdown
+=
+= return to default system state
+=
+===============
+*/
+
+void I_Shutdown(void)
+{
+ I_ShutdownGraphics();
+ IO_ShutdownTimer();
+ S_ShutDown();
+ I_ShutdownMouse();
+ I_ShutdownKeyboard();
+
+ IO_SetTimer0(0);
+}
+
+
+/*
+================
+=
+= I_Error
+=
+================
+*/
+
+void I_Error(char *error, ...)
+{
+ union REGS regs;
+
+ va_list argptr;
+
+ D_QuitNetGame();
+ I_Shutdown();
+ va_start(argptr, error);
+ regs.x.eax = 0x3;
+ int386(0x10, &regs, &regs);
+ vprintf(error, argptr);
+ va_end(argptr);
+ printf("\n");
+ exit(1);
+}
+
+//--------------------------------------------------------------------------
+//
+// I_Quit
+//
+// Shuts down net game, saves defaults, prints the exit text message,
+// goes to text mode, and exits.
+//
+//--------------------------------------------------------------------------
+
+void I_Quit(void)
+{
+ byte *scr;
+ char *lumpName;
+ int r;
+
+ D_QuitNetGame();
+ M_SaveDefaults();
+ scr = (byte *) W_CacheLumpName("ENDTEXT", PU_CACHE);
+ I_Shutdown();
+ memcpy((void *) 0xb8000, scr, 80 * 25 * 2);
+ regs.w.ax = 0x0200;
+ regs.h.bh = 0;
+ regs.h.dl = 0;
+ regs.h.dh = 23;
+ int386(0x10, (const union REGS *) &regs, &regs); // Set text pos
+ _settextposition(24, 1);
+ exit(0);
+}
+
+/*
+===============
+=
+= I_ZoneBase
+=
+===============
+*/
+
+byte *I_ZoneBase(int *size)
+{
+ int meminfo[32];
+ int heap;
+ int i;
+ int block;
+ byte *ptr;
+
+ memset(meminfo, 0, sizeof(meminfo));
+ segread(&segregs);
+ segregs.es = segregs.ds;
+ regs.w.ax = 0x500; // get memory info
+ regs.x.edi = (int) &meminfo;
+ int386x(0x31, &regs, &regs, &segregs);
+
+ heap = meminfo[0];
+ printf("DPMI memory: 0x%x, ", heap);
+
+ do
+ {
+ heap -= 0x10000; // leave 64k alone
+ if (heap > 0x800000)
+ heap = 0x800000;
+ ptr = malloc(heap);
+ }
+ while (!ptr);
+
+ printf("0x%x allocated for zone\n", heap);
+ if (heap < 0x180000)
+ I_Error("Insufficient DPMI memory!");
+#if 0
+ regs.w.ax = 0x501; // allocate linear block
+ regs.w.bx = heap >> 16;
+ regs.w.cx = heap & 0xffff;
+ int386(0x31, &regs, &regs);
+ if (regs.w.cflag)
+ I_Error("Couldn't allocate DPMI memory!");
+
+ block = (regs.w.si << 16) + regs.w.di;
+#endif
+
+ *size = heap;
+ return ptr;
+}
+
+/*
+=============================================================================
+
+ DISK ICON FLASHING
+
+=============================================================================
+*/
+
+void I_InitDiskFlash(void)
+{
+#if 0
+ void *pic;
+ byte *temp;
+
+ pic = W_CacheLumpName("STDISK", PU_CACHE);
+ temp = destscreen;
+ destscreen = (byte *) 0xac000;
+ V_DrawPatchDirect(SCREENWIDTH - 16, SCREENHEIGHT - 16, 0, pic);
+ destscreen = temp;
+#endif
+}
+
+// draw disk icon
+void I_BeginRead(void)
+{
+#if 0
+ byte *src, *dest;
+ int y;
+
+ if (!grmode)
+ return;
+
+// write through all planes
+ outp(SC_INDEX, SC_MAPMASK);
+ outp(SC_INDEX + 1, 15);
+// set write mode 1
+ outp(GC_INDEX, GC_MODE);
+ outp(GC_INDEX + 1, inp(GC_INDEX + 1) | 1);
+
+// copy to backup
+ src = currentscreen + 184 * 80 + 304 / 4;
+ dest = (byte *) 0xac000 + 184 * 80 + 288 / 4;
+ for (y = 0; y < 16; y++)
+ {
+ dest[0] = src[0];
+ dest[1] = src[1];
+ dest[2] = src[2];
+ dest[3] = src[3];
+ src += 80;
+ dest += 80;
+ }
+
+// copy disk over
+ dest = currentscreen + 184 * 80 + 304 / 4;
+ src = (byte *) 0xac000 + 184 * 80 + 304 / 4;
+ for (y = 0; y < 16; y++)
+ {
+ dest[0] = src[0];
+ dest[1] = src[1];
+ dest[2] = src[2];
+ dest[3] = src[3];
+ src += 80;
+ dest += 80;
+ }
+
+
+// set write mode 0
+ outp(GC_INDEX, GC_MODE);
+ outp(GC_INDEX + 1, inp(GC_INDEX + 1) & ~1);
+#endif
+}
+
+// erase disk icon
+void I_EndRead(void)
+{
+#if 0
+ byte *src, *dest;
+ int y;
+
+ if (!grmode)
+ return;
+
+// write through all planes
+ outp(SC_INDEX, SC_MAPMASK);
+ outp(SC_INDEX + 1, 15);
+// set write mode 1
+ outp(GC_INDEX, GC_MODE);
+ outp(GC_INDEX + 1, inp(GC_INDEX + 1) | 1);
+
+
+// copy disk over
+ dest = currentscreen + 184 * 80 + 304 / 4;
+ src = (byte *) 0xac000 + 184 * 80 + 288 / 4;
+ for (y = 0; y < 16; y++)
+ {
+ dest[0] = src[0];
+ dest[1] = src[1];
+ dest[2] = src[2];
+ dest[3] = src[3];
+ src += 80;
+ dest += 80;
+ }
+
+// set write mode 0
+ outp(GC_INDEX, GC_MODE);
+ outp(GC_INDEX + 1, inp(GC_INDEX + 1) & ~1);
+#endif
+}
+
+
+
+/*
+=============
+=
+= I_AllocLow
+=
+=============
+*/
+
+byte *I_AllocLow(int length)
+{
+ byte *mem;
+
+ // DPMI call 100h allocates DOS memory
+ segread(&segregs);
+ regs.w.ax = 0x0100; // DPMI allocate DOS memory
+ regs.w.bx = (length + 15) / 16;
+ int386(DPMI_INT, &regs, &regs);
+// segment = regs.w.ax;
+// selector = regs.w.dx;
+ if (regs.w.cflag != 0)
+ I_Error("I_AllocLow: DOS alloc of %i failed, %i free",
+ length, regs.w.bx * 16);
+
+
+ mem = (void *) ((regs.x.eax & 0xFFFF) << 4);
+
+ memset(mem, 0, length);
+ return mem;
+}
+
+/*
+============================================================================
+
+ NETWORKING
+
+============================================================================
+*/
+
+/* // FUCKED LINES
+typedef struct
+{
+ char priv[508];
+ } doomdata_t;
+*/// FUCKED LINES
+
+#define DOOMCOM_ID 0x12345678l
+
+/* // FUCKED LINES
+typedef struct
+{
+ long id;
+ short intnum; // DOOM executes an int to execute commands
+
+// communication between DOOM and the driver
+ short command; // CMD_SEND or CMD_GET
+ short remotenode; // dest for send, set by get (-1 = no packet)
+ short datalength; // bytes in doomdata to be sent
+
+// info common to all nodes
+ short numnodes; // console is allways node 0
+ short ticdup; // 1 = no duplication, 2-5 = dup for slow nets
+ short extratics; // 1 = send a backup tic in every packet
+ short deathmatch; // 1 = deathmatch
+ short savegame; // -1 = new game, 0-5 = load savegame
+ short episode; // 1-3
+ short map; // 1-9
+ short skill; // 1-5
+
+// info specific to this node
+ short consoleplayer;
+ short numplayers;
+ short angleoffset; // 1 = left, 0 = center, -1 = right
+ short drone; // 1 = drone
+
+// packet data to be sent
+ doomdata_t data;
+ } doomcom_t;
+*/// FUCKED LINES
+
+extern doomcom_t *doomcom;
+
+/*
+====================
+=
+= I_InitNetwork
+=
+====================
+*/
+
+void I_InitNetwork(void)
+{
+ int i;
+
+ i = M_CheckParm("-net");
+ if (!i)
+ {
+ //
+ // single player game
+ //
+ doomcom = malloc(sizeof(*doomcom));
+ memset(doomcom, 0, sizeof(*doomcom));
+ netgame = false;
+ doomcom->id = DOOMCOM_ID;
+ doomcom->numplayers = doomcom->numnodes = 1;
+ doomcom->deathmatch = false;
+ doomcom->consoleplayer = 0;
+ doomcom->ticdup = 1;
+ doomcom->extratics = 0;
+ return;
+ }
+
+ netgame = true;
+ doomcom = (doomcom_t *) atoi(myargv[i + 1]);
+//DEBUG
+ doomcom->skill = startskill;
+ doomcom->episode = startepisode;
+ doomcom->map = startmap;
+ doomcom->deathmatch = deathmatch;
+
+}
+
+void I_NetCmd(void)
+{
+ if (!netgame)
+ I_Error("I_NetCmd when not in netgame");
+ DPMIInt(doomcom->intnum);
+}
+
+int i_Vector;
+externdata_t *i_ExternData;
+boolean useexterndriver;
+
+//=========================================================================
+//
+// I_CheckExternDriver
+//
+// Checks to see if a vector, and an address for an external driver
+// have been passed.
+//=========================================================================
+
+void I_CheckExternDriver(void)
+{
+ int i;
+
+ if (!(i = M_CheckParm("-externdriver")))
+ {
+ return;
+ }
+ i_ExternData = (externdata_t *) atoi(myargv[i + 1]);
+ i_Vector = i_ExternData->vector;
+
+ useexterndriver = true;
+}
+
+//=========================================================================
+//
+// I_ReadExternDriver
+//
+// calls the external interrupt, which should then update i_ExternDriver
+//=========================================================================
+
+void I_ReadExternDriver(void)
+{
+ event_t ev;
+
+ if (useexterndriver)
+ {
+ DPMIInt(i_Vector);
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-05 23:20:39 +0000