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JM_FREE.C
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JM_FREE.C
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// JM_FREE.C
//
// Warning!
//
// All functions in this source file are designated usable by the memory
// manager after program initialization.
//
#include "ID_HEADS.H"
#pragma hdrstop
#include "3d_def.h"
#define SKIP_CHECKSUMS (true)
#define SHOW_CHECKSUM (false)
#if GAME_VERSION == SHAREWARE_VERSION
#define AUDIOT_CHECKSUM 0xFFF87142
#define MAPTEMP_CHECKSUM 0x000370C9
#define VGAGRAPH_CHECKSUM 0xFFFFDE44
#define DIZFILE_CHECKSUM 0x00000879l
#elif GAME_VERSION == MISSIONS_1_THR_3
#define AUDIOT_CHECKSUM 0xFFF87142
#define MAPTEMP_CHECKSUM 0x00084F1F
#define VGAGRAPH_CHECKSUM 0xFFFFDE44
#define DIZFILE_CHECKSUM 0x00000879l
#else
#define AUDIOT_CHECKSUM 0xfff912C9
#define MAPTEMP_CHECKSUM 0x00107739
#define VGAGRAPH_CHECKSUM 0xffff6C9A
#define DIZFILE_CHECKSUM 0x00000879l
#endif
#pragma warn -pro
#pragma warn -use
void SDL_SBSetDMA(byte channel);
void SDL_SetupDigi(void);
//=========================================================================
//
// FAR FREE DATA
//
//=========================================================================
#if FREE_DATA
char far JM_FREE_DATA_START[1]={0};
#endif
#if TECH_SUPPORT_VERSION
char far EnterBetaCode[]="\n TECH SUPPORT VERSION!\n\n NO DISTRIBUTING!";
#elif BETA_TEST
char far EnterBetaCode[]=" !BETA VERSION!\n DO NOT DISTRIBUTE\n UNDER PENALTY OF DEATH\n\n ENTER BETA CODE";
#endif
char far * far JHParmStrings[] = {"no386","is386",nil};
char far show_text1[]="\n SYSTEM INFO\n";
char far show_text2[]="=======================\n\n";
char far show_text3[]="-- Memory avail after game is loaded --\n\n";
char far show_text4[]=" ** Insufficient memory to run the game **";
char far show_text5[]="---- Extra Devices ----\n\n";
static char far * far ParmStrings[] = {"HIDDENCARD",""};
static byte far wolfdigimap[] =
{
// These first sounds are in the upload version
ATKIONCANNONSND, 0,
ATKCHARGEDSND, 1,
ATKBURSTRIFLESND, 2,
ATKGRENADESND, 46,
OPENDOORSND, 3,
CLOSEDOORSND, 4,
HTECHDOOROPENSND, 5,
HTECHDOORCLOSESND, 6,
INFORMANTDEATHSND, 7,
SCIENTISTHALTSND, 19,
SCIENTISTDEATHSND, 20,
GOLDSTERNHALTSND, 8,
GOLDSTERNLAUGHSND, 24,
HALTSND, 9, // Rent-A-Cop 1st sighting
RENTDEATH1SND, 10, // Rent-A-Cop Death
EXPLODE1SND, 11,
GGUARDHALTSND, 12,
GGUARDDEATHSND, 17,
PROHALTSND, 16,
PROGUARDDEATHSND, 13,
BLUEBOYDEATHSND, 18,
BLUEBOYHALTSND, 51,
SWATHALTSND, 22,
SWATDIESND, 47,
SCANHALTSND, 15,
SCANDEATHSND, 23,
PODHATCHSND, 26,
PODHALTSND, 50,
PODDEATHSND, 49,
ELECTSHOTSND, 27,
DOGBOYHALTSND, 14,
DOGBOYDEATHSND, 21,
ELECARCDAMAGESND, 25,
ELECAPPEARSND, 28,
ELECDIESND, 29,
INFORMDEATH2SND, 39, // Informant Death #2
RENTDEATH2SND, 34, // Rent-A-Cop Death #2
PRODEATH2SND, 42, // PRO Death #2
SWATDEATH2SND, 48, // SWAT Death #2
SCIDEATH2SND, 53, // Gen. Sci Death #2
LIQUIDDIESND, 30,
GURNEYSND, 31,
GURNEYDEATHSND, 41,
WARPINSND, 32,
WARPOUTSND, 33,
EXPLODE2SND, 35,
LCANHALTSND, 36,
LCANDEATHSND, 37,
// RENTDEATH3SND, 38, // Rent-A-Cop Death #3
INFORMDEATH3SND, 40, // Informant Death #3
// PRODEATH3SND, 43, // PRO Death #3
// SWATDEATH3SND, 52, // Swat Guard #3
SCIDEATH3SND, 54, // Gen. Sci Death #3
LCANBREAKSND, 44,
SCANBREAKSND, 45,
CLAWATTACKSND, 56,
SPITATTACKSND, 55,
PUNCHATTACKSND, 57,
LASTSOUND
};
#if 0
static byte far wolfdigimap[] =
{
// These first sounds are in the upload version
ATKIONCANNONSND, 0,
ATKCHARGEDSND, 1,
ATKBURSTRIFLESND, 2,
ATKGRENADESND, 46,
OPENDOORSND, 3,
CLOSEDOORSND, 4,
HTECHDOOROPENSND, 5,
HTECHDOORCLOSESND, 6,
INFORMANTDEATHSND, 7,
SCIENTISTHALTSND, 19,
SCIENTISTDEATHSND, 20,
GOLDSTERNHALTSND, 8,
GOLDSTERNLAUGHSND, 24,
HALTSND, 9, // Rent-A-Cop 1st sighting
RENTDEATH1SND, 10, // Rent-A-Cop Death
EXPLODE1SND, 11,
GGUARDHALTSND, 12,
GGUARDDEATHSND, 17,
PROHALTSND, 16,
PROGUARDDEATHSND, 13,
BLUEBOYDEATHSND, 18,
BLUEBOYHALTSND, 51,
SWATHALTSND, 22,
SWATDIESND, 47,
SCANHALTSND, 15,
SCANDEATHSND, 23,
PODHATCHSND, 26,
PODHALTSND, 50,
PODDEATHSND, 49,
ELECTSHOTSND, 27,
DOGBOYHALTSND, 14,
DOGBOYDEATHSND, 21,
ELECARCDAMAGESND, 25,
ELECAPPEARSND, 28,
ELECDIESND, 29,
INFORMDEATH2SND, 39, // Informant Death #2
RENTDEATH2SND, 34, // Rent-A-Cop Death #2
PRODEATH2SND, 42, // PRO Death #2
SWATDEATH2SND, 48, // SWAT Death #2
SCIDEATH2SND, 53, // Gen. Sci Death #2
LIQUIDDIESND, 30,
GURNEYSND, 31,
GURNEYDEATHSND, 41,
WARPINSND, 32,
WARPOUTSND, 33,
EXPLODE2SND, 35,
LCANHALTSND, 36,
LCANDEATHSND, 37,
// RENTDEATH3SND, 38, // Rent-A-Cop Death #3
INFORMDEATH3SND, 40, // Informant Death #3
// PRODEATH3SND, 43, // PRO Death #3
// SWATDEATH3SND, 52, // Swat Guard #3
SCIDEATH3SND, 54, // Gen. Sci Death #3
LCANBREAKSND, 44,
SCANBREAKSND, 45,
CLAWATTACKSND, 56,
SPITATTACKSND, 55,
PUNCHATTACKSND, 57,
LASTSOUND
};
#endif
char far cinfo_text[]= "\n"
"Planet Strike\n"
"Copyright (c) 1993 - JAM Productions, Inc.\n"
"All rights reserved.\n";
#if BETA_TEST
char far dver_text[]="Download the latest version pal!";
#endif
#if FREE_DATA
char far JM_FREE_DATA_END[1]={0};
#endif
extern byte far colormap[];
byte far * lightsource;
//=========================================================================
//
// FREE FUNCTIONS
//
//=========================================================================
#if FREE_FUNCTIONS
// This function is used as a label for the start of the
// functions used by the memory manager.
//
void JM_FREE_START()
{
}
#endif
// ------------------ ID Software 'startup' functions ---------------------
/*
======================
=
= CA_Startup
=
= Open all files and load in headers
=
======================
*/
void CA_Startup (void)
{
#ifdef PROFILE
unlink ("PROFILE.TXT");
profilehandle = open("PROFILE.TXT", O_CREAT | O_WRONLY | O_TEXT);
#endif
CAL_SetupMapFile ();
CAL_SetupGrFile ();
CAL_SetupAudioFile ();
mapon = -1;
ca_levelbit = 1;
ca_levelnum = 0;
}
//#if !IN_DEVELOPMENT
extern boolean IN_Started;
extern char far * far IN_ParmStrings[];
extern boolean INL_StartJoy(word joy);
extern boolean INL_StartMouse(void);
extern void INL_StartKbd(void);
///////////////////////////////////////////////////////////////////////////
//
// INL_StartJoy() - Detects & auto-configures the specified joystick
// The auto-config assumes the joystick is centered
//
///////////////////////////////////////////////////////////////////////////
boolean
INL_StartJoy(word joy)
{
word x,y;
IN_GetJoyAbs(joy,&x,&y);
if
(
((x == 0) || (x > MaxJoyValue - 10))
|| ((y == 0) || (y > MaxJoyValue - 10))
)
return(false);
else
{
IN_SetupJoy(joy,0,x * 2,0,y * 2);
return(true);
}
}
///////////////////////////////////////////////////////////////////////////
//
// IN_Startup() - Starts up the Input Mgr
//
///////////////////////////////////////////////////////////////////////////
void
IN_Startup(void)
{
boolean checkjoys,checkmouse,checkNG;
word i;
if (IN_Started)
return;
checkjoys = true;
checkmouse = true;
checkNG = false;
for (i = 1;i < _argc;i++)
{
switch (US_CheckParm(_argv[i],IN_ParmStrings))
{
case 0:
checkjoys = false;
break;
case 1:
checkmouse = false;
break;
case 2:
checkNG = true;
break;
}
}
if (checkNG)
{
#define WORD_CODE(c1,c2) ((c2)|(c1<<8))
NGjoy(0xf0);
if ((_AX==WORD_CODE('S','G')) && _BX)
NGinstalled=true;
}
INL_StartKbd();
MousePresent = checkmouse? INL_StartMouse() : false;
for (i = 0;i < MaxJoys;i++)
JoysPresent[i] = checkjoys? INL_StartJoy(i) : false;
IN_Started = true;
}
//#endif
/*
===================
=
= MM_Startup
=
= Grabs all space from turbo with malloc/farmalloc
= Allocates bufferseg misc buffer
=
===================
*/
extern boolean mmstarted,bombonerror;
extern mmblocktype far mmblocks[], far *mmhead, far *mmfree,
far *mmnew, far *mmrover;
extern void far *farheap;
extern void *nearheap;
void MM_Startup (void)
{
int i;
unsigned long length;
void far *start;
unsigned segstart,seglength,endfree;
if (mmstarted)
MM_Shutdown ();
mmstarted = true;
bombonerror = true;
//
// set up the linked list (everything in the free list;
//
mmhead = NULL;
mmfree = &mmblocks[0];
for (i=0;i<MAXBLOCKS-1;i++)
mmblocks[i].next = &mmblocks[i+1];
mmblocks[i].next = NULL;
//
// locked block of all memory until we punch out free space
//
GETNEWBLOCK;
mmhead = mmnew; // this will allways be the first node
mmnew->start = 0;
mmnew->length = 0xffff;
mmnew->attributes = LOCKBIT;
mmnew->next = NULL;
mmrover = mmhead;
//
// get all available near conventional memory segments
//
length=coreleft();
start = (void far *)(nearheap = malloc(length));
length -= 16-(FP_OFF(start)&15);
length -= SAVENEARHEAP;
seglength = length / 16; // now in paragraphs
segstart = FP_SEG(start)+(FP_OFF(start)+15)/16;
MML_UseSpace (segstart,seglength);
mminfo.nearheap = length;
//
// get all available far conventional memory segments
//
length=farcoreleft();
start = farheap = farmalloc(length);
length -= 16-(FP_OFF(start)&15);
length -= SAVEFARHEAP;
seglength = length / 16; // now in paragraphs
segstart = FP_SEG(start)+(FP_OFF(start)+15)/16;
MML_UseSpace (segstart,seglength);
mminfo.farheap = length;
mminfo.mainmem = mminfo.nearheap + mminfo.farheap;
// __SEGS_AVAILABLE__ = (long)(mminfo.EMSmem + mminfo.XMSmem + mminfo.mainmem) / 16;
//
// allocate the misc buffer
//
mmrover = mmhead; // start looking for space after low block
MM_GetPtr (&bufferseg,BUFFERSIZE);
}
//
// PML_StartupEMS() - Sets up EMS for Page Mgr's use
// Checks to see if EMS driver is present
// Verifies that EMS hardware is present
// Make sure that EMS version is 3.2 or later
// If there's more than our minimum (2 pages) available, allocate it (up
// to the maximum we need)
//
#if !DUAL_SWAP_FILES
char EMMDriverName[9] = "EMMXXXX0";
extern word EMSAvail,EMSPagesAvail,EMSHandle,
EMSPageFrame,EMSPhysicalPage;
extern EMSListStruct EMSList[];
boolean
PML_StartupEMS(void)
{
int i;
long size;
EMSPresent = false; // Assume that we'll fail
EMSAvail = 0;
_DX = (word)EMMDriverName;
_AX = 0x3d00;
geninterrupt(0x21); // try to open EMMXXXX0 device
asm jnc gothandle
goto error;
gothandle:
_BX = _AX;
_AX = 0x4400;
geninterrupt(0x21); // get device info
asm jnc gotinfo;
goto error;
gotinfo:
asm and dx,0x80
if (!_DX)
goto error;
_AX = 0x4407;
geninterrupt(0x21); // get status
asm jc error
if (!_AL)
goto error;
_AH = 0x3e;
geninterrupt(0x21); // close handle
_AH = EMS_STATUS;
geninterrupt(EMS_INT);
if (_AH)
goto error; // make sure EMS hardware is present
_AH = EMS_VERSION;
geninterrupt(EMS_INT);
if (_AH || (_AL < 0x32)) // only work on EMS 3.2 or greater (silly, but...)
goto error;
_AH = EMS_GETFRAME;
geninterrupt(EMS_INT);
if (_AH)
goto error; // find the page frame address
EMSPageFrame = _BX;
_AH = EMS_GETPAGES;
geninterrupt(EMS_INT);
if (_AH)
goto error;
if (_BX < 2)
goto error; // Require at least 2 pages (32k)
EMSAvail = _BX;
// Don't hog all available EMS
size = EMSAvail * (long)EMSPageSize;
if (size - (EMSPageSize * 2) > (ChunksInFile * (long)PMPageSize))
{
size = (ChunksInFile * (long)PMPageSize) + EMSPageSize;
EMSAvail = size / EMSPageSize;
}
_AH = EMS_ALLOCPAGES;
_BX = EMSAvail;
geninterrupt(EMS_INT);
if (_AH)
goto error;
EMSHandle = _DX;
mminfo.EMSmem += EMSAvail * (long)EMSPageSize;
// Initialize EMS mapping cache
for (i = 0;i < EMSFrameCount;i++)
EMSList[i].baseEMSPage = -1;
EMSPresent = true; // We have EMS
error:
return(EMSPresent);
}
//
// PML_StartupXMS() - Starts up XMS for the Page Mgr's use
// Checks for presence of an XMS driver
// Makes sure that there's at least a page of XMS available
// Allocates any remaining XMS (rounded down to the nearest page size)
//
extern boolean XMSPresent;
extern word XMSAvail,XMSPagesAvail,XMSHandle;
extern longword XMSDriver;
extern int XMSProtectPage;
boolean
PML_StartupXMS(void)
{
XMSPresent = false; // Assume failure
XMSAvail = 0;
asm mov ax,0x4300
asm int XMS_INT // Check for presence of XMS driver
if (_AL != 0x80)
goto error;
asm mov ax,0x4310
asm int XMS_INT // Get address of XMS driver
asm mov [WORD PTR XMSDriver],bx
asm mov [WORD PTR XMSDriver+2],es // function pointer to XMS driver
XMS_CALL(XMS_QUERYFREE); // Find out how much XMS is available
XMSAvail = _AX;
if (!_AX) // AJR: bugfix 10/8/92
goto error;
XMSAvail &= ~(PMPageSizeKB - 1); // Round off to nearest page size
if (XMSAvail < (PMPageSizeKB * 2)) // Need at least 2 pages
goto error;
_DX = XMSAvail;
XMS_CALL(XMS_ALLOC); // And do the allocation
XMSHandle = _DX;
if (!_AX) // AJR: bugfix 10/8/92
{
XMSAvail = 0;
goto error;
}
mminfo.XMSmem += XMSAvail * 1024;
XMSPresent = true;
error:
return(XMSPresent);
}
//
//
// PML_StartupMainMem() - Allocates as much main memory as is possible for
// the Page Mgr. The memory is allocated as non-purgeable, so if it's
// necessary to make requests of the Memory Mgr, PM_UnlockMainMem()
// needs to be called.
//
extern boolean MainPresent;
extern memptr MainMemPages[PMMaxMainMem];
extern PMBlockAttr MainMemUsed[PMMaxMainMem];
extern int MainPagesAvail;
void
PML_StartupMainMem(void)
{
int i,n;
memptr *p;
MainPagesAvail = 0;
MM_BombOnError(false);
for (i = 0,p = MainMemPages;i < PMMaxMainMem;i++,p++)
{
MM_GetPtr(p,PMPageSize);
if (mmerror)
break;
MainPagesAvail++;
MainMemUsed[i] = pmba_Allocated;
}
MM_BombOnError(true);
if (mmerror)
mmerror = false;
if (MainPagesAvail < PMMinMainMem)
PM_ERROR(PML_STARTUPMAINMEM_LOW);
MainPresent = true;
}
//
// PM_Startup() - Start up the Page Mgr
//
extern boolean PMStarted;
extern char far * far PM_ParmStrings[];
void
PM_Startup(void)
{
boolean nomain,noems,noxms;
int i;
if (PMStarted)
return;
nomain = noems = noxms = false;
for (i = 1;i < _argc;i++)
{
switch (US_CheckParm(_argv[i],PM_ParmStrings))
{
case 0:
nomain = true;
break;
case 1:
noems = true;
break;
case 2:
noxms = true;
break;
}
}
OpenPageFile();
if (!noems)
PML_StartupEMS();
if (!noxms)
PML_StartupXMS();
if (nomain && !EMSPresent)
PM_ERROR(PM_STARTUP_NO_MAIN_EMS);
else
PML_StartupMainMem();
PM_Reset();
PMStarted = true;
}
#endif
///////////////////////////////////////////////////////////////////////////
//
// US_Startup() - Starts the User Mgr
//
///////////////////////////////////////////////////////////////////////////
extern boolean US_Started;
extern char far * far US_ParmStrings[];
extern char far * far US_ParmStrings2[];
extern int USL_HardError(word errval,int ax,int bp,int si);
void
US_Startup(void)
{
int i,n;
if (US_Started)
return;
harderr(USL_HardError); // Install the fatal error handler
US_InitRndT(true); // Initialize the random number generator
for (i = 1;i < _argc;i++)
{
switch (US_CheckParm(_argv[i],US_ParmStrings2))
{
case 0:
compatability = true;
break;
case 1:
compatability = false;
break;
}
}
// Check for TED launching here
for (i = 1;i < _argc;i++)
{
n = US_CheckParm(_argv[i],US_ParmStrings);
switch(n)
{
case 0:
#if 0
tedlevelnum = atoi(_argv[i + 1]);
// if (tedlevelnum >= 0)
tedlevel = true;
#endif
break;
// case 1:
// NoWait = true;
// break;
}
}
US_Started = true;
}
/*
=======================
=
= VL_Startup // WOLFENSTEIN HACK
=
=======================
*/
void VL_Startup (void)
{
int i,videocard;
asm cld;
videocard = VL_VideoID ();
for (i = 1;i < _argc;i++)
if (US_CheckParm(_argv[i],ParmStrings) == 0)
{
videocard = 5;
break;
}
if (videocard != 5)
Quit ("Improper video card! Try the -HIDDENCARD command line parameter!");
}
#if !RESTART_PICTURE_PAUSE
/*
=======================
=
= VL_SetVGAPlaneMode
=
=======================
*/
void VL_SetVGAPlaneMode (void)
{
asm mov ax,0x13
asm int 0x10
VL_DePlaneVGA ();
VGAMAPMASK(15);
VL_SetLineWidth (40);
}
/*
=================
=
= VL_ClearVideo
=
= Fill the entire video buffer with a given color
=
=================
*/
void VL_ClearVideo (byte color)
{
asm mov dx,GC_INDEX
asm mov al,GC_MODE
asm out dx,al
asm inc dx
asm in al,dx
asm and al,0xfc // write mode 0 to store directly to video
asm out dx,al
asm mov dx,SC_INDEX
asm mov ax,SC_MAPMASK+15*256
asm out dx,ax // write through all four planes
asm mov ax,SCREENSEG
asm mov es,ax
asm mov al,[color]
asm mov ah,al
asm mov cx,0x8000 // 0x8000 words, clearing 8 video bytes/word
asm xor di,di
asm rep stosw
}
/*
=================
=
= VL_DePlaneVGA
=
=================
*/
void VL_DePlaneVGA (void)
{
//
// change CPU addressing to non linear mode
//
//
// turn off chain 4 and odd/even
//
outportb (SC_INDEX,SC_MEMMODE);
outportb (SC_INDEX+1,(inportb(SC_INDEX+1)&~8)|4);
outportb (SC_INDEX,SC_MAPMASK); // leave this set throughought
//
// turn off odd/even and set write mode 0
//
outportb (GC_INDEX,GC_MODE);
outportb (GC_INDEX+1,inportb(GC_INDEX+1)&~0x13);
//
// turn off chain
//
outportb (GC_INDEX,GC_MISCELLANEOUS);
outportb (GC_INDEX+1,inportb(GC_INDEX+1)&~2);
//
// clear the entire buffer space, because int 10h only did 16 k / plane
//
VL_ClearVideo (0);
//
// change CRTC scanning from doubleword to byte mode, allowing >64k scans
//
outportb (CRTC_INDEX,CRTC_UNDERLINE);
outportb (CRTC_INDEX+1,inportb(CRTC_INDEX+1)&~0x40);
outportb (CRTC_INDEX,CRTC_MODE);
outportb (CRTC_INDEX+1,inportb(CRTC_INDEX+1)|0x40);
}
/*
====================
=
= VL_SetLineWidth
=
= Line witdh is in WORDS, 40 words is normal width for vgaplanegr
=
====================
*/
void VL_SetLineWidth (unsigned width)
{
int i,offset;
//
// set wide virtual screen
//
outport (CRTC_INDEX,CRTC_OFFSET+width*256);
//
// set up lookup tables
//
linewidth = width*2;
offset = 0;
for (i=0;i<MAXSCANLINES;i++)
{
ylookup[i]=offset;
offset += linewidth;
}
}
#endif
/*
==================
=
= BuildTables
=
= Calculates:
=
= scale projection constant
= sintable/costable overlapping fractional tables
=
==================
*/
const float radtoint = (float)FINEANGLES/2/PI;
void BuildTables (void)
{
int i;
float angle,anglestep;
double tang;
fixed value;
byte far * temp;