catacombapocalypse/GELIB.C

/* Catacomb Apocalypse Source Code
 * Copyright (C) 1993-2014 Flat Rock 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.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include <dos.h>
#include <conio.h>
#include <stdio.h>
#include <dir.h>
#include "mem.h"
#include "string.h"
#include "time.h"
#include "stdarg.h"
#include "io.h"

#include "DEF.H"
#include "gelib.h"
#include "sl_file.h"


#define MAX_GAMELIST_NAMES 20
#define FNAME_LEN				9

////////////////////////////////////////////////////////////////////////////
//
// Global variables
//
boolean InLoadSaveGame = false;
//AudioDeviceType ge_DigiMode;
boolean ConserveMemory = false;
char GameListNames[MAX_GAMELIST_NAMES+1][FNAME_LEN],current_disk=1;
short NumGames;
short PPT_LeftEdge=0,PPT_RightEdge=320;
boolean LeaveDriveOn=false,ge_textmode=true;
char Filename[FILENAME_LEN+1], ID[sizeof(GAMENAME)], VER[sizeof(SAVEVER_DATA)];
short wall_anim_delay,wall_anim_time = 7;
BufferedIO lzwBIO;





////////////////////////////////////////////////////////////////////////////
//
// CalibrateJoystick()
//
void CalibrateJoystick(short joynum)
{
	word	minx,maxx,
			miny,maxy;

	IN_ClearKeysDown();

	VW_HideCursor();

	VW_FixRefreshBuffer();
	CenterWindow(30,8);

	US_Print("\n");
	US_CPrintLine("Move joystick to the upper-left");
	US_CPrintLine("and press one of the buttons.");
	VW_UpdateScreen();

	while ((LastScan != sc_Escape) && !IN_GetJoyButtonsDB(joynum));
	if (LastScan == sc_Escape)
		return;

	IN_GetJoyAbs(joynum,&minx,&miny);
	while (IN_GetJoyButtonsDB(joynum));

	US_Print("\n");
	US_CPrintLine("Move joystick to the lower-right");
	US_CPrintLine("and press one of the buttons.");
	VW_UpdateScreen();

	while ((LastScan != sc_Escape) && !IN_GetJoyButtonsDB(joynum));
	if (LastScan == sc_Escape)
		return;

	IN_GetJoyAbs(joynum,&maxx,&maxy);
	if ((minx == maxx) && (miny == maxy))
		return;

	IN_SetupJoy(joynum,minx,maxx,miny,maxy);

	while (IN_GetJoyButtonsDB(joynum));
	if (LastScan)
		IN_ClearKeysDown();

	JoystickCalibrated = true;
}

////////////////////////////////////////////////////////////////////////////
//
// WaitKeyVBL()
//
void WaitKeyVBL(short key, short vbls)
{
	while (vbls--)
	{
		VW_WaitVBL(1);
		IN_ReadControl(0,&control);
		if ((control.button0|control.button1)||(Keyboard[key]))
			break;
	}
}

////////////////////////////////////////////////////////////////////////////
//
// MoveScreen()
//
// panadjust must be saved and restored if MoveScreen is being called from
// inside a level.
//
void MoveScreen(short x, short y)
{
	unsigned address;

	address = (y*linewidth)+(x/8);
	VW_SetScreen(address,0);
	bufferofs = displayofs = address;
	panadjust=0;
}

////////////////////////////////////////////////////////////////////////////
//
// MoveGfxDst()
//
void MoveGfxDst(short x, short y)
{
	unsigned address;

	address = (y*linewidth)+(x/8);
	bufferofs = displayofs = address;
}

#if 0

#if GRAPHIC_PIRATE

///////////////////////////////////////////////////////////////////////////
//
// DoPiracy() - Graphics piracy code...
//
void DoPiracy()
{
	struct Shape Pirate1Shp;
	struct Shape Pirate2Shp;

	VW_SetScreenMode (EGA320GR);
	VW_ClearVideo(BLACK);

	// Load shapes...
	//
	if (LoadShape("PIRATE1E."EXT,&Pirate1Shp))
		TrashProg("Can't load PIRATE1E.BIO");

	if (LoadShape("PIRATE2E."EXT,&Pirate2Shp))
		TrashProg("Can't load PIRATE2E.BIO");

	// Deal with shapes...
	//
	VW_SetLineWidth(40);

	VW_FadeOut();

	MoveScreen(0,0);
	UnpackEGAShapeToScreen(&Pirate1Shp,(linewidth-Pirate1Shp.BPR)<<2,0);

	MoveScreen(0,200);
	UnpackEGAShapeToScreen(&Pirate2Shp,(linewidth-Pirate2Shp.BPR)<<2,0);

	MoveScreen(0,0);
	VW_FadeIn();
	WaitKeyVBL(57,200);
	while (Keyboard[57]);

	SD_PlaySound(GOOD_PICKSND);

	MoveScreen(0,200);
	WaitKeyVBL(57,300);
	while (Keyboard[57]);
	VW_FadeOut();

	FreeShape(&Pirate1Shp);
	FreeShape(&Pirate2Shp);
}

#else

///////////////////////////////////////////////////////////////////////////
//
// DoPiracy() - Text-based piracy code...
//
void DoPiracy()
{
}

#endif
#endif

//--------------------------------------------------------------------------
// BlackPalette()
//--------------------------------------------------------------------------
void BlackPalette()
{
	extern char colors[7][17];

	_ES=FP_SEG(&colors[0]);
	_DX=FP_OFF(&colors[0]);
	_AX=0x1002;
	geninterrupt(0x10);
	screenfaded = true;
}

//--------------------------------------------------------------------------
// ColoredPalette()
//--------------------------------------------------------------------------
void ColoredPalette()
{
	extern char colors[7][17];

	_ES=FP_SEG(&colors[3]);
	_DX=FP_OFF(&colors[3]);
	_AX=0x1002;
	geninterrupt(0x10);
	screenfaded = false;
}

////////////////////////////////////////////////////////////////////////////
//
// Verify()
//
long Verify(char *filename)
{
	int handle;
	long size;

	if ((handle=open(filename,O_BINARY))==-1)
		return (0);
	size=filelength(handle);
	close(handle);
	return(size);
}

///////////////////////////////////////////////////////////////////////////
//
//	GE_SaveGame
//
//	Handles user i/o for saving a game
//
///////////////////////////////////////////////////////////////////////////

void GE_SaveGame()
{
	boolean GettingFilename=true;
//	char Filename[FILENAME_LEN+1]; //, ID[sizeof(GAMENAME)], VER[sizeof(SAVEVER_DATA)];
	int handle;
	struct dfree dfree;
	long davail;

	VW_FixRefreshBuffer();
	ReadGameList();
	while (GettingFilename)
	{
		DisplayGameList(2,7,3,10);
		US_DrawWindow(5,1,30,3);
		memset(Filename,0,sizeof(Filename));
		US_CPrint("Enter name to SAVE this game:");
		VW_UpdateScreen();
		if (screenfaded)
			VW_FadeIn();
		if (!US_LineInput((linewidth<<2)-32,20,Filename,"",true,8,0))
			goto EXIT_FUNC;
		if (!strlen(Filename))
			goto EXIT_FUNC;
		getdfree(getdisk()+1,&dfree);
		davail = (long)dfree.df_avail*(long)dfree.df_bsec*(long)dfree.df_sclus;
		if (davail < 10000)
		{
			US_CenterWindow(22,4);
			US_Print("\n");
			US_CPrintLine("Disk Full: Can't save game.");
			US_CPrintLine("Try inserting another disk.");
			VW_UpdateScreen();

			IN_Ack();
		}
		else
		{
			strcat(Filename,".SAV");
			GettingFilename = false;
			if (Verify(Filename))								// FILE EXISTS
			{
				US_CenterWindow(22,4);
				US_CPrintLine("That file already exists...");
				US_CPrintLine("Overwrite it ????");
				US_CPrintLine("(Y)es or (N)o?");
				VW_UpdateScreen();

				while((!Keyboard[21]) && (!Keyboard[49]) && !Keyboard[27]);

				if (Keyboard[27])
					goto EXIT_FUNC;
				if (Keyboard[49])
				{
					GettingFilename = true;
					VW_UpdateScreen();
				}
			}
		}
	}

	handle = open(Filename,O_RDWR|O_CREAT|O_BINARY,S_IREAD|S_IWRITE);
	if (handle==-1)
		goto EXIT_FUNC;

	if ((!CA_FarWrite(handle,(void far *)GAMENAME,sizeof(GAMENAME))) || (!CA_FarWrite(handle,(void far *)SAVEVER_DATA,sizeof(SAVEVER_DATA))))
	{
		if (!screenfaded)
			VW_FadeOut();

		return;
	}

	if (!USL_SaveGame(handle))
		Quit("Save game error");



EXIT_FUNC:;

	if (handle!=-1)
		close(handle);

	if (handle==-1)
	{
		remove(Filename);
		US_CenterWindow(22,6);
		US_CPrintLine("DISK ERROR");
		US_CPrintLine("Check: Write protect...");
		US_CPrintLine("File name...");
		US_CPrintLine("Bytes free on disk...");
		US_CPrintLine("Press SPACE to continue.");
		VW_UpdateScreen();
		while (!Keyboard[57]);
		while (Keyboard[57]);
	}

	while (Keyboard[1]);

	if (!screenfaded)
		VW_FadeOut();
}


///////////////////////////////////////////////////////////////////////////
//
//	GE_LoadGame
//
//	Handles user i/o for loading a game
//
///////////////////////////////////////////////////////////////////////////

boolean GE_LoadGame()
{
	boolean GettingFilename=true,rt_code=false;
	int handle;

	IN_ClearKeysDown();
	memset(ID,0,sizeof(ID));
	memset(VER,0,sizeof(VER));
	VW_FixRefreshBuffer();
	ReadGameList();
	while (GettingFilename)
	{
		DisplayGameList(2,7,3,10);
		US_DrawWindow(5,1,30,3);
		memset(Filename,0,sizeof(Filename));
		US_CPrint("Enter name of game to RESTORE:");
		VW_UpdateScreen();
		if (screenfaded)
			VW_FadeIn();
		if (!US_LineInput((linewidth<<2)-32,20,Filename,"",true,8,0))
			goto EXIT_FUNC;
		strcat(Filename,".SAV");
		GettingFilename = false;

		if (!Verify(Filename))								// FILE DOESN'T EXIST
		{
			US_CenterWindow(22,3);
			US_CPrintLine(" That file doesn't exist....");
			US_CPrintLine("Press SPACE to try again.");
			VW_UpdateScreen();

			while (!Keyboard[57]);
			while (Keyboard[57]);
			GettingFilename = true;
		}
	}

	handle = open(Filename,O_RDWR|O_BINARY);
	if (handle==-1)
		goto EXIT_FUNC;

	if ((!CA_FarRead(handle,(void far *)&ID,sizeof(ID))) || (!CA_FarRead(handle,(void far *)&VER,sizeof(VER))))
		return(false);

	if ((strcmp(ID,GAMENAME)) || (strcmp(VER,SAVEVER_DATA)))
	{
		US_CenterWindow(32,4);
		US_CPrintLine("That isn't a "GAMENAME);
		US_CPrintLine(".SAV file.");
		US_CPrintLine("Press SPACE to continue.");
		VW_UpdateScreen();
		while (!Keyboard[57]);
		while (Keyboard[57]);

		if (!screenfaded)
			VW_FadeOut();

		return(false);
	}

	if (!USL_LoadGame(handle))
		Quit("Load game error.");

	rt_code = true;


EXIT_FUNC:;
	if (handle==-1)
	{
		US_CenterWindow(22,3);
		US_CPrintLine("DISK ERROR ** LOAD **");
		US_CPrintLine("Press SPACE to continue.");
		while (!Keyboard[57]);
		while (Keyboard[57]);
	}
	else
		close(handle);

	if (!screenfaded)
		VW_FadeOut();

	return(rt_code);
}

///////////////////////////////////////////////////////////////////////////
//
//	GE_HardError() - Handles the Abort/Retry/Fail sort of errors passed
//			from DOS. Hard coded to ignore if during Load/Save Game.
//
///////////////////////////////////////////////////////////////////////////
#pragma	warn	-par
#pragma	warn	-rch
int GE_HardError(word errval,int ax,int bp,int si)
{
#define IGNORE  0
#define RETRY   1
#define	ABORT   2
extern	void	ShutdownId(void);

static	char		buf[32];
static	WindowRec	wr;
static	boolean		oldleavedriveon;
		int			di;
		char		c,*s,*t;
boolean holdscreenfaded;

	if (InLoadSaveGame)
		hardresume(IGNORE);


	di = _DI;

	oldleavedriveon = LeaveDriveOn;
	LeaveDriveOn = false;

	if (ax < 0)
		s = "Device Error";
	else
	{
		if ((di & 0x00ff) == 0)
			s = "Drive ~ is Write Protected";
		else
			s = "Error on Drive ~";
		for (t = buf;*s;s++,t++)	// Can't use sprintf()
			if ((*t = *s) == '~')
				*t = (ax & 0x00ff) + 'A';
		*t = '\0';
		s = buf;
	}

	c = peekb(0x40,0x49);	// Get the current screen mode
	if ((c < 4) || (c == 7))
		goto oh_kill_me;

	// DEBUG - handle screen cleanup
	holdscreenfaded=screenfaded;

	US_SaveWindow(&wr);
	VW_ClearVideo(0);            ////////////// added for exiting
	US_CenterWindow(30,3);
	US_CPrint(s);
	US_CPrint("(R)etry or (A)bort?");
	VW_UpdateScreen();
	if (holdscreenfaded)
		VW_FadeIn();
	IN_ClearKeysDown();

asm	sti	// Let the keyboard interrupts come through

	while (true)
	{
		switch (IN_WaitForASCII())
		{
		case key_Escape:
		case 'a':
		case 'A':
			goto oh_kill_me;
			break;
		case key_Return:
		case key_Space:
		case 'r':
		case 'R':
			if (holdscreenfaded)
				VW_FadeOut();
			US_ClearWindow();
			VW_UpdateScreen();
			US_RestoreWindow(&wr);
			LeaveDriveOn = oldleavedriveon;
			return(RETRY);
			break;
		}
	}

oh_kill_me:
	abortprogram = s;
	TrashProg("Terminal Error: %s\n",s);
//	if (tedlevel)
//		fprintf(stderr,"You launched from TED. I suggest that you reboot...\n");

	return(ABORT);
#undef	IGNORE
#undef	RETRY
#undef	ABORT
}
#pragma	warn	+par
#pragma	warn	+rch

//--------------------------------------------------------------------------
//
//
//                          B O B   ROUTINES
//
//
//--------------------------------------------------------------------------



#ifdef BOBLIST

////////////////////////////////////////////////////////////////////////////
//
// UpdateBOBList() - Adds a sprite to an objects BOBlist.  The BOB List
//						 	must already be allocated and have an available slot.
//
//	RETURNS : true = Success adding Sprite / false = Failure.
//
// NOTE : This also sets the users 'needtoreact' flag to true.
//
boolean UpdateBOBList(objtype *obj,struct Simple_Shape *Shape,shapeclass Class, short priority, spriteflags sprflags)
{
	struct BOB_Shape *CurBOBShape = NULL;

#pragma warn -pia

	if (CurBOBShape = obj->nextshape)
	{
		// Treverse down BOBList looking for a sprite with the same class
		// OR an empty shape struct to store the new shape.

		while ((CurBOBShape->class != Class) && (CurBOBShape->class) && CurBOBShape)
		{
			CurBOBShape = CurBOBShape->nextshape;
		}

		if (CurBOBShape)
		{
			RF_RemoveSprite(&CurBOBShape->sprite);
			CurBOBShape->shapenum = Shape->shapenum;
			CurBOBShape->x_offset = Shape->x_offset;
			CurBOBShape->y_offset = Shape->y_offset;
			CurBOBShape->priority = priority;
			CurBOBShape->sprflags = sprflags;
			CurBOBShape->class = Class;
			return(true);
		}
	}
	return(false);

#pragma warn +pia

}

/////////////////////////////////////////////////////////////////////////////
//
// RemoveBOBShape() - Removes a sprite from a BOBList.
//
// RETURNS : true = Success / false = Failure (shape not found)
//
boolean RemoveBOBShape(objtype *obj, shapeclass Class)
{
	struct BOB_Shape *CurBOBShape = NULL;

#pragma warn -pia

	if (CurBOBShape = obj->nextshape)
	{
		while ((CurBOBShape->class != Class) && (!CurBOBShape->class) && CurBOBShape)
		{
			CurBOBShape = CurBOBShape->nextshape;
		}

		if (CurBOBShape)
		{
			CurBOBShape->class = noshape;
			return(true);
		}
	}
	return(false);

#pragma warn +pia

}


/////////////////////////////////////////////////////////////////////////////
//
// RemoveBOBList() - Removes an entire BOBList attached to an object.
//
//
void RemoveBOBList(objtype *obj)
{
	struct BOB_Shape *CurBOBShape;

#pragma warn -pia

	if (CurBOBShape = obj->nextshape)
	{
		// Treverse down BOBList looking for a sprite with the same class
		// OR an empty shape struct to store the new shape.

		while (CurBOBShape)
		{
			if (CurBOBShape->class)
			{
				CurBOBShape->class = noshape;
				RF_RemoveSprite (&CurBOBShape->sprite);
			}
			CurBOBShape = CurBOBShape->nextshape;
		}
	}

#pragma warn +pia

}



/////////////////////////////////////////////////////////////////////////////
//
// InitBOBList() -- This initializes a BOB list for all the possible shapes
//						  attached at one time.  This is done with an array of
//						  BOB_Shape structs and links the 'nextshape' pointer to
//						  to the next element.
//
//
void InitBOBList(objtype *obj, struct BOB_Shape *BOB_Shape, short NumElements)
{
	struct BOB_Shape *CurShape;
	short loop;

	obj->nextshape = BOB_Shape;

	for (loop=1;loop<NumElements;loop++)
	{
		CurShape = BOB_Shape++;
		CurShape->nextshape = BOB_Shape;
	}

	BOB_Shape->nextshape = NULL;
}


////////////////////////////////////////////////////////////////////////////
//
// RefreshBOBList() -- This routine updates all sprites attached to the
//							  BOBList and refreshes there position in the sprite
//							  list.
//
void RefreshBOBList(objtype *obj)
{
	struct BOB_Shape *Shape;

	Shape = obj->nextshape;

	while (Shape)
	{
		if (Shape->class)
			RF_PlaceSprite(&Shape->sprite,obj->x+Shape->x_offset,obj->y+Shape->y_offset, Shape->shapenum, spritedraw,Shape->priority,Shape->sprflags);
		Shape = Shape->nextshape;
	}
}
#endif



//--------------------------------------------------------------------------
// InitBufferedIO()
//--------------------------------------------------------------------------
memptr InitBufferedIO(int handle, BufferedIO *bio)
{
	bio->handle = handle;
	bio->offset = BIO_BUFFER_LEN;
	bio->status = 0;
	MM_GetPtr(&bio->buffer,BIO_BUFFER_LEN);

	return(bio->buffer);
}

//--------------------------------------------------------------------------
// FreeBufferedIO()
//--------------------------------------------------------------------------
void FreeBufferedIO(BufferedIO *bio)
{
	if (bio->buffer)
		MM_FreePtr(&bio->buffer);
}

//--------------------------------------------------------------------------
// bio_readch()
//--------------------------------------------------------------------------
byte bio_readch(BufferedIO *bio)
{
	byte far *buffer;

	if (bio->offset == BIO_BUFFER_LEN)
	{
		bio->offset = 0;
		bio_fillbuffer(bio);
	}

	buffer = MK_FP(bio->buffer,bio->offset++);

	return(*buffer);
}

//--------------------------------------------------------------------------
// bio_fillbuffer()
//
// BUGS (Not really bugs... More like RULES!)
//
//    1) This code assumes BIO_BUFFER_LEN is no smaller than
//       NEAR_BUFFER_LEN!!
//
//    2) BufferedIO.status should be altered by this code to report
//       read errors, end of file, etc... If you know how big the file
//       is you're reading, determining EOF should be no problem.
//
//--------------------------------------------------------------------------
void bio_fillbuffer(BufferedIO *bio)
{
	#define NEAR_BUFFER_LEN	(64)
	byte near_buffer[NEAR_BUFFER_LEN];
	short bio_length,bytes_read,bytes_requested;

	bytes_read = 0;
	bio_length = BIO_BUFFER_LEN;
	while (bio_length)
	{
		if (bio_length > NEAR_BUFFER_LEN-1)
			bytes_requested = NEAR_BUFFER_LEN;
		else
			bytes_requested = bio_length;

		read(bio->handle,near_buffer,bytes_requested);
		_fmemcpy(MK_FP(bio->buffer,bytes_read),near_buffer,bytes_requested);

		bio_length -= bytes_requested;
		bytes_read += bytes_requested;
	}
}

///////////////////////////////////////////////////////////////////////////
//
// SwapLong()
//
void SwapLong(long far *Var)
{
	asm		les	bx,Var
	asm		mov	ax,[es:bx]
	asm		xchg	ah,al
	asm		xchg	ax,[es:bx+2]
	asm		xchg	ah,al
	asm 		mov	[es:bx],ax
}

///////////////////////////////////////////////////////////////////////////
//
// SwapWord()
//
void SwapWord(unsigned int far *Var)
{
	asm		les	bx,Var
	asm		mov	ax,[es:bx]
	asm		xchg	ah,al
	asm		mov	[es:bx],ax
}


#if 0

////////////////////////////////////////////////////////////////////////////
//
// LoadShape()
//
int LoadShape(char *Filename,struct Shape *SHP)
{
	#define CHUNK(Name)	(*ptr == *Name) &&			\
								(*(ptr+1) == *(Name+1)) &&	\
								(*(ptr+2) == *(Name+2)) &&	\
								(*(ptr+3) == *(Name+3))


	int RT_CODE;
//	struct ffblk ffblk;
	FILE *fp;
	char CHUNK[5];
	char far *ptr;
	memptr IFFfile = NULL;
	unsigned long FileLen, size, ChunkLen;
	int loop;


	RT_CODE = 1;

	// Decompress to ram and return ptr to data and return len of data in
	//	passed variable...

	if (!(FileLen = BLoad(Filename,&IFFfile)))
		TrashProg("Can't load Compressed Shape - Possibly corrupt file!");

	// Evaluate the file
	//
	ptr = MK_FP(IFFfile,0);
	if (!CHUNK("FORM"))
		goto EXIT_FUNC;
	ptr += 4;

	FileLen = *(long far *)ptr;
	SwapLong((long far *)&FileLen);
	ptr += 4;

	if (!CHUNK("ILBM"))
		goto EXIT_FUNC;
	ptr += 4;

	FileLen += 4;
	while (FileLen)
	{
		ChunkLen = *(long far *)(ptr+4);
		SwapLong((long far *)&ChunkLen);
		ChunkLen = (ChunkLen+1) & 0xFFFFFFFE;

		if (CHUNK("BMHD"))
		{
			ptr += 8;
			SHP->bmHdr.w = ((struct BitMapHeader far *)ptr)->w;
			SHP->bmHdr.h = ((struct BitMapHeader far *)ptr)->h;
			SHP->bmHdr.x = ((struct BitMapHeader far *)ptr)->x;
			SHP->bmHdr.y = ((struct BitMapHeader far *)ptr)->y;
			SHP->bmHdr.d = ((struct BitMapHeader far *)ptr)->d;
			SHP->bmHdr.trans = ((struct BitMapHeader far *)ptr)->trans;
			SHP->bmHdr.comp = ((struct BitMapHeader far *)ptr)->comp;
			SHP->bmHdr.pad = ((struct BitMapHeader far *)ptr)->pad;
			SwapWord(&SHP->bmHdr.w);
			SwapWord(&SHP->bmHdr.h);
			SwapWord(&SHP->bmHdr.x);
			SwapWord(&SHP->bmHdr.y);
			ptr += ChunkLen;
		}
		else
		if (CHUNK("BODY"))
		{
			ptr += 4;
			size = *((long far *)ptr);
			ptr += 4;
			SwapLong((long far *)&size);
			SHP->BPR = (SHP->bmHdr.w+7) >> 3;
			MM_GetPtr(&SHP->Data,size);
			if (!SHP->Data)
				goto EXIT_FUNC;
			movedata(FP_SEG(ptr),FP_OFF(ptr),FP_SEG(SHP->Data),0,size);
			ptr += ChunkLen;

			break;
		}
		else
			ptr += ChunkLen+8;

		FileLen -= ChunkLen+8;
	}

	RT_CODE = 0;

EXIT_FUNC:;
	if (IFFfile)
	{
//		segptr = (memptr)FP_SEG(IFFfile);
		MM_FreePtr(&IFFfile);
	}

	return (RT_CODE);
}

#endif

////////////////////////////////////////////////////////////////////////////
//
// FreeShape()
//
void FreeShape(struct Shape *shape)
{
	if (shape->Data)
		MM_FreePtr(&shape->Data);
}

////////////////////////////////////////////////////////////////////////////
//
// UnpackEGAShapeToScreen()
//
int UnpackEGAShapeToScreen(struct Shape *SHP,int startx,int starty)
{
	int currenty;
	signed char n, Rep, far *Src, far *Dst[8], loop, Plane;
	unsigned int BPR, Height;
	boolean NotWordAligned;

	NotWordAligned = SHP->BPR & 1;
	startx>>=3;
	Src = MK_FP(SHP->Data,0);
	currenty = starty;
	Plane = 0;
	Height = SHP->bmHdr.h;
	while (Height--)
	{
		Dst[0] = (MK_FP(0xA000,displayofs));
		Dst[0] += ylookup[currenty];
		Dst[0] += startx;
		for (loop=1; loop<SHP->bmHdr.d; loop++)
			Dst[loop] = Dst[0];


		for (Plane=0; Plane<SHP->bmHdr.d; Plane++)
		{
			outport(0x3c4,((1<<Plane)<<8)|2);

			BPR = ((SHP->BPR+1) >> 1) << 1;               // IGNORE WORD ALIGN
			while (BPR)
			{
				if (SHP->bmHdr.comp)
					n = *Src++;
				else
					n = BPR-1;

				if (n < 0)
				{
					if (n != -128)
					{
						n = (-n)+1;
						BPR -= n;
						Rep = *Src++;
						if ((!BPR) && (NotWordAligned))   // IGNORE WORD ALIGN
							n--;

						while (n--)
							*Dst[Plane]++ = Rep;
					}
					else
						BPR--;
				}
				else
				{
					n++;
					BPR -= n;
					if ((!BPR) && (NotWordAligned))     // IGNORE WORD ALIGN
						n--;

					while (n--)
						*Dst[Plane]++ = *Src++;

					if ((!BPR) && (NotWordAligned))     // IGNORE WORD ALIGN
						Src++;
				}
			}
		}
		currenty++;
	}

	return(0);
}

////////////////////////////////////////////////////////////////////////////
//
// GetKeyChoice()
//
char GetKeyChoice(char *choices,boolean clear)
{
	extern void DoEvents(void);

	boolean waiting;
	char *s,*ss;

	IN_ClearKeysDown();

	waiting = true;
	while (waiting)
	{
		s = choices;
		while (*s)
		{
			if (Keyboard[*s++])
			{
				waiting=false;
				break;
			}
		}
	}

	IN_ClearKeysDown();

	return(*(--s));
}

#if 0

////////////////////////////////////////////////////////////////////////////
//
// AnimateObj()
//
boolean AnimateObj(objtype *obj)
{
	boolean Done;

	Done = false;

	if (obj->animtype == at_NONE)		// Animation finished?
		return(true);						// YEP!

	if (obj->animdelay)					// Check animation delay.
	{
		obj->animdelay -= tics;
		if (obj->animdelay < 0)
			obj->animdelay = 0;
		return(false);
	}

	switch (obj->animtype)				// Animate this object!
	{
		case at_ONCE:
		case at_CYCLE:
			switch (obj->animdir)
			{
				case at_FWD:
					if (obj->curframe < obj->maxframe)
						AdvanceAnimFWD(obj);
					else
						if (obj->animtype == at_CYCLE)
						{
							obj->curframe = 0;		 // RESET CYCLE ANIMATION
							obj->animdelay=1;
						}
						else
						{
							obj->animtype = at_NONE; // TERMINATE ONCE ANIM
							Done = true;
						}
					break;

				case at_REV:
					if (obj->curframe > 0)
						AdvanceAnimREV(obj);
					else
						if (obj->animtype == at_CYCLE)
						{
							obj->curframe = obj->maxframe;	// RESET CYCLE ANIMATION
							obj->animdelay = 1;
						}
						else
						{
							obj->animtype = at_NONE;   // TERMINATE ONCE ANIM
							Done = true;
						}
					break; // REV
			}
			break;

		case at_REBOUND:
			switch (obj->animdir)
			{
				case at_FWD:
					if (obj->curframe < obj->maxframe)
						AdvanceAnimFWD(obj);
					else
					{
						obj->animdir = at_REV;
						obj->animdelay = 1;
					}
					break;

				case at_REV:
					if (obj->curframe > 0)
						AdvanceAnimREV(obj);
					else
					{
						obj->animdir = at_FWD;
						obj->animdelay = 1;
						Done = true;
					}
					break;
			}
			break; /* REBOUND */

		case at_WAIT:
			Done = true;
			break;
	}

	return(Done);
}

void AdvanceAnimFWD(objtype *obj)	// Advances a Frame of ANIM for ONCE,CYCLE, REBOUND
{
	obj->curframe++; // INC frames
	obj->animdelay = obj->maxdelay;		 // Init Delay Counter.
	obj->needtoreact = true;
}


void AdvanceAnimREV(objtype *obj)  // Advances a Frame of ANIM for ONCE,CYCLE, REBOUND
{
	obj->curframe--; // DEC frames
	obj->animdelay = obj->maxdelay;		 // Init Delay Counter.
	obj->needtoreact = true;
}
#endif

#if 0
///////////////////////////////////////////////////////////////////////////
//
// LoadASArray()  - Load an array of audio samples in FAR memory.
//
void LoadASArray(struct Sample *ASArray)
{
	int loop = 0;

	while (ASArray[loop].filename)
	{
	  if (!BLoad(ASArray[loop].filename,(memptr *)&ASArray[loop].data))
		  TrashProg("Unable to load sample in LoadASArray()");
	  loop++;
	}
}



////////////////////////////////////////////////////////////////////////////
//
// FreeASArray() - Frees an ASArray from memory that has been loaded with
//						 LoadASArray()
//
void FreeASArray(struct Sample *ASArray)
{
	unsigned loop = 0;

	while (ASArray[loop].data)
	{
		MM_SetPurge((memptr *)&ASArray[loop++].data,3);
		MM_FreePtr((memptr *)&ASArray[loop++].data);
	}
}

///////////////////////////////////////////////////////////////////////////
//
// GE_LoadAllDigiSounds()	- This is a hook that CA_LoadAllSounds()
//									  calls to load all of the Digitized sounds for
//									  Sound Blaster & Sound Source.
//
// NOTE : This stub would do any other necessary routines for DigiSounds
//			 specific to GAMERS EDGE code. (Keeping seperate from ID's)
//
void GE_LoadAllDigiSounds()
{
	LoadASArray(DigiSounds);
}



/////////////////////////////////////////////////////////////////////////
//
// GE_FreeAllDigiSounds() -- This is a hook that CA_LoadAllSounds()
//									  calls to free all digitized sounds for
//									  which ever hardware and allow for any necessary
//									  clean up.
//
//
// NOTE : This stub would do any other necessary routines for DigiSounds
//			 specific to GAMERS EDGE code. (Keeping seperate from ID's)
//
void GE_FreeAllDigiSounds()
{
	FreeASArray(DigiSounds);
}



///////////////////////////////////////////////////////////////////////////
//
// GE_LoadAllSounds()	- Loads ALL sounds needed for detected hardware.
//
void GE_LoadAllSounds()
{
	unsigned i,start;

	start = STARTPCSOUNDS;
	for (i=0;i<NUMSOUNDS;i++,start++)
		CA_CacheAudioChunk (start);

	if (AdLibPresent)
	{
		start = STARTADLIBSOUNDS;
		for (i=0;i<NUMSOUNDS;i++,start++)
			CA_CacheAudioChunk (start);
	}

	if (SoundBlasterPresent)
		LoadASArray(DigiSounds);
}


//////////////////////////////////////////////////////////////////////////
//
// GE_PurgeAllSounds() - Frees all sounds that were loaded.
//
void GE_PurgeAllSounds()
{
	unsigned start,i;

	start = STARTPCSOUNDS;
	for (i=0;i<NUMSOUNDS;i++,start++)
		if (audiosegs[start])
			MM_SetPurge (&(memptr)audiosegs[start],3);		// make purgable


	if (AdLibPresent)
	{
		start = STARTADLIBSOUNDS;
		for (i=0;i<NUMSOUNDS;i++,start++)
			if (audiosegs[start])
				MM_SetPurge (&(memptr)audiosegs[start],3);		// make purgable
	}

	if (SoundBlasterPresent)
		GE_FreeAllDigiSounds();
}


/////////////////////////////////////////////////////////////////////////////
//
// PlaySample() -- Plays a DIGITIZED sample using SoundBlaster OR SoundSource
//
// PARAMETERS : Sample Number (Corresponding to ASArray "DigiSounds[]".
//
void PlaySample(unsigned SampleNum)
{

	if (!DigiSounds[SampleNum].data)
		TrashProg("PlaySample - Trying to play an unloaded digi sound!");


	switch (SoundMode)				// external variable in ID_SD for sound mode..
	{
		case sdm_SoundBlaster:
		case sdm_SoundBlasterAdLib:
			SDL_SBPlaySample(MK_FP(DigiSounds[SampleNum].data,0));
			break;

		default:
			TrashProg("PlaySample() - incorrect SoundMode for PlaySample()");
			break;
	}
}


/////////////////////////////////////////////////////////////////////////////
//
// SelectDigiAudio() -- This routine intergrates multi sound hardware with
//								id's routines.
//
void SelectDigiAudio(AudioDeviceType Device)
{
	switch (Device)
	{
		case ged_SoundSource:
		case ged_SoundBlaster:
			break;
	}
}
#endif

///////////////////////////////////////////////////////////////////////////
//
// DisplayGameList()
//
void DisplayGameList(short winx, short winy, short list_width, short list_height)
{
	#define SPACES 2

	short width,col,row,orgcol,games_printed=0,h;

	// Possibly shrink window.
	//
	h = (NumGames / list_width) + ((NumGames % list_width) > 0);
	if (h < list_height)
		list_height = h;

	// Open window and print header...
	//
	US_DrawWindow(winx,winy,list_width*(8+SPACES*2),list_height+3);
	US_CPrintLine("LIST OF SAVED GAMES");
	US_Print("\n");

	col = orgcol = PrintX;
	row = PrintY;

	// Display as many 'save game' files as can fit in the window.
	//
	width = list_width;
	while ((games_printed<NumGames) && (list_height))
	{
		// Print filename and padding spaces.
		//
		US_Printxy(col+(SPACES*8),row,GameListNames[games_printed]);
		col += 8*((SPACES*2)+8);

		// Check for end-of-line or end-of-window.
		//
		width--;
		if (!width)
		{
			col = orgcol;
			row += 8;
			width = list_width;
			list_height--;
			US_Print("\n");
		}

		games_printed++;
	}
}

////////////////////////////////////////////////////////////////////////////
//
// ReadGameList()
//
void ReadGameList()
{
	struct ffblk ffblk;
	short done,len;

	NumGames = -1;
	done = findfirst("*.sav",&ffblk,0);

	while (!done)
	{
		if (NumGames == MAX_GAMELIST_NAMES)
			memcpy(GameListNames,GameListNames[1],MAX_GAMELIST_NAMES*sizeof(GameListNames[0]));
		else
			NumGames++;

		fnsplit(ffblk.ff_name,NULL,NULL,GameListNames[NumGames],NULL);

		done=findnext(&ffblk);
	}

	NumGames++;
}

#if 0
////////////////////////////////////////////////////////////////////////////
//
// CenterObj()
//
void CenterObj(objtype *obj, unsigned x, unsigned y)
{
	spritetabletype far *sprite;
	unsigned width, height;

	sprite=&spritetable[obj->baseshape+obj->curframe-STARTSPRITES];

	width = (sprite->xh-sprite->xl+(1<<G_P_SHIFT)) >> 1;
	if (obj->sprflags&sf_vertflip)
	{
		height = (sprite->yl-(sprite->height<<G_P_SHIFT) + sprite->yh+(1<<G_P_SHIFT)) >> 1;
	}
	else
		height = (sprite->yh-sprite->yl+(1<<G_P_SHIFT)) >> 1;

	obj->x = x-width;
	obj->y = y-height;
}
#endif

#if 0
//-------------------------------------------------------------------------
// cacheout()
//-------------------------------------------------------------------------
void cacheout(short s,short e)
{
	short i;

	for(i=(s);i<=(e);i++)
	{
		grneeded[i]&=~ca_levelbit;
		if (grsegs[i])
			MM_SetPurge(&grsegs[i],3);
	}

}

//-------------------------------------------------------------------------
// cachein()
//-------------------------------------------------------------------------
void cachein(short s,short e)
{
	short i;

	for(i=(s);i<=(e);i++)
	{
		CA_MarkGrChunk(i);
		if (grsegs[i])
			MM_SetPurge(&grsegs[i],0);
	}
}
#endif

#if 0
////////////////////////////////////////////////////////////////////////////
//
// SetUpdateBlock()
//
void SetUpdateBlock(unsigned x,unsigned y,unsigned width,unsigned height,char refresh)
{
	eraseblocktype *erase;

#if 0 //SP unsure if this is needed
	x = (x+((MAPBORDER+MAPXLEFTOFFSET)<<4))>>3;
	y += ((MAPBORDER+MAPYTOPOFFSET)<<4);
#else
	x = (x+(MAPBORDER<<4))>>3;
	y += (MAPBORDER<<4);
#endif
	width >>= 3;

	if (refresh & 1)
	{
		erase = eraselistptr[0]++;
		erase->screenx=x;
		erase->screeny=y;
		erase->width=width;
		erase->height=height;
	}

	if (refresh & 2)
	{
		erase = eraselistptr[1]++;
		erase->screenx=x;
		erase->screeny=y;
		erase->width=width;
		erase->height=height;
	}
}


////////////////////////////////////////////////////////////////////////////
//
// ObjHeight
//
unsigned ObjHeight(objtype *obj)
{
	spritetabletype far *sprite;

	sprite=&spritetable[obj->baseshape+obj->curframe-STARTSPRITES];

	if (obj->sprflags&sf_vertflip)
	{
		return((sprite->yl-(sprite->height<<G_P_SHIFT) + sprite->yh+(1<<G_P_SHIFT)) >> 1);
	}
	else
		return((sprite->yh-sprite->yl+(1<<G_P_SHIFT)) >> 1);
}


////////////////////////////////////////////////////////////////////////////
//
// ObjWidth
//
unsigned ObjWidth(objtype *obj)
{
	spritetabletype far *sprite;

	sprite=&spritetable[obj->baseshape+obj->curframe-STARTSPRITES];

	return((sprite->xh-sprite->xl+(1<<G_P_SHIFT)) >> 1);
}
#endif

#if 0
//--------------------------------------------------------------------------
// visible_on()
//--------------------------------------------------------------------------
boolean visible_on(objtype *obj)
{
	if (!(obj->flags & of_visible))
	{
		obj->needtoreact=true;
		obj->flags |= of_visible;
		return(true);
	}

	return(false);
}

//--------------------------------------------------------------------------
// visible_off()
//--------------------------------------------------------------------------
boolean visible_off(objtype *obj)
{
	if (obj->flags & of_visible)
	{
		obj->needtoreact=true;
		obj->flags &= ~of_visible;
		return(true);
	}

	return(false);
}
#endif


/*
===================
=
= FizzleFade
=
===================
*/

#define PIXPERFRAME     10000

void FizzleFade (unsigned source, unsigned dest,
	unsigned width,unsigned height, boolean abortable)
{
	unsigned        drawofs,pagedelta;
	unsigned        char maskb[8] = {1,2,4,8,16,32,64,128};
	unsigned        x,y,p,frame;
	long            rndval;
	ScanCode			 lastLastScan=LastScan=0;

	width--;
	height--;

	pagedelta = dest-source;
//	VW_SetScreen (dest,0);
	rndval = 1;
	y = 0;

asm     mov     es,[screenseg]
asm     mov     dx,SC_INDEX
asm     mov     al,SC_MAPMASK
asm     out     dx,al

	TimeCount=frame=0;
	do      // while (1)
	{
		if ((abortable) || (Flags & FL_QUICK))
		{
			IN_ReadControl(0,&control);
			if (control.button0 || control.button1 || (lastLastScan != LastScan)
			|| Keyboard[sc_Escape] || (Flags & FL_QUICK))
			{
				VW_ScreenToScreen (source,dest,(width+1)/8,height+1);
				goto exitfunc;
			}
		}

		for (p=0;p<PIXPERFRAME;p++)
		{
			//
			// seperate random value into x/y pair
			//
			asm     mov     ax,[WORD PTR rndval]
			asm     mov     dx,[WORD PTR rndval+2]
			asm     mov     bx,ax
			asm     dec     bl
			asm     mov     [BYTE PTR y],bl                 // low 8 bits - 1 = y xoordinate
			asm     mov     bx,ax
			asm     mov     cx,dx
			asm     shr     cx,1
			asm     rcr     bx,1
			asm     shr     bx,1
			asm     shr     bx,1
			asm     shr     bx,1
			asm     shr     bx,1
			asm     shr     bx,1
			asm     shr     bx,1
			asm     shr     bx,1
			asm     mov     [x],bx                                  // next 9 bits = x xoordinate
			//
			// advance to next random element
			//
			asm     shr     dx,1
			asm     rcr     ax,1
			asm     jnc     noxor
			asm     xor     dx,0x0001
			asm     xor     ax,0x2000
noxor:
			asm     mov     [WORD PTR rndval],ax
			asm     mov     [WORD PTR rndval+2],dx

			if (x>width || y>height)
				continue;
			drawofs = source+ylookup[y];

			asm     mov     cx,[x]
			asm     mov     si,cx
			asm     and     si,7
			asm     mov dx,GC_INDEX
			asm     mov al,GC_BITMASK
			asm     mov     ah,BYTE PTR [maskb+si]
			asm     out dx,ax

			asm     mov     si,[drawofs]
			asm     shr     cx,1
			asm     shr     cx,1
			asm     shr     cx,1
			asm     add     si,cx
			asm     mov     di,si
			asm     add     di,[pagedelta]

			asm     mov     dx,GC_INDEX
			asm     mov     al,GC_READMAP                   // leave GC_INDEX set to READMAP
			asm     out     dx,al

			asm     mov     dx,SC_INDEX+1
			asm     mov     al,1
			asm     out     dx,al
			asm     mov     dx,GC_INDEX+1
			asm     mov     al,0
			asm     out     dx,al

			asm     mov     bl,[es:si]
			asm     xchg [es:di],bl

			asm     mov     dx,SC_INDEX+1
			asm     mov     al,2
			asm     out     dx,al
			asm     mov     dx,GC_INDEX+1
			asm     mov     al,1
			asm     out     dx,al

			asm     mov     bl,[es:si]
			asm     xchg [es:di],bl

			asm     mov     dx,SC_INDEX+1
			asm     mov     al,4
			asm     out     dx,al
			asm     mov     dx,GC_INDEX+1
			asm     mov     al,2
			asm     out     dx,al

			asm     mov     bl,[es:si]
			asm     xchg [es:di],bl

			asm     mov     dx,SC_INDEX+1
			asm     mov     al,8
			asm     out     dx,al
			asm     mov     dx,GC_INDEX+1
			asm     mov     al,3
			asm     out     dx,al

			asm     mov     bl,[es:si]
			asm     xchg [es:di],bl

			if (rndval == 1)                // entire sequence has been completed
				goto exitfunc;
		}
//		frame++;
//		while (TimeCount<frame);         // don't go too fast

	} while (1);

exitfunc:;
	EGABITMASK(255);
	EGAMAPMASK(15);
	return;
}

#if 0
//-------------------------------------------------------------------------
// mprintf()
//-------------------------------------------------------------------------
void mprintf(char *msg, ...)
{
	static char x=0;
	static char y=0;
	static char far *video = MK_FP(0xb000,0x0000);
	char buffer[100],*ptr;

	va_list(ap);

	va_start(ap,msg);

	vsprintf(buffer,msg,ap);

	ptr = buffer;
	while (*ptr)
	{
		switch (*ptr)
		{
			case '\n':
				if (y >= 23)
				{
					video -= (x<<1);
					_fmemcpy(MK_FP(0xb000,0x0000),MK_FP(0xb000,0x00a0),3840);
				}
				else
				{
					y++;
					video += ((80-x)<<1);
				}
				x=0;
			break;

			default:
				*video = *ptr;
				video[1] = 15;
				video += 2;
				x++;
			break;
		}
		ptr++;
	}

	va_end(ap);
}
#endif

#if 0

//--------------------------------------------------------------------------
//								 FULL SCREEN REFRESH/ANIM MANAGERS
//--------------------------------------------------------------------------

///////////////////////////////////////////////////////////////////////////
//
//  InitLatchRefresh() -- Loads an ILBM (JAMPAK'd) into the Master Latch
//								  to be used as the background refresh screen...
//
void InitLatchRefresh(char *filename)
{
	struct Shape RefreshShp;
	short yofs;

	VW_ClearVideo(0);

	if (LoadShape(filename,&RefreshShp))
		TrashProg("Can't load %s",filename);

	VW_SetLineWidth(RefreshShp.BPR);

	yofs = masterswap/SCREENWIDTH;
	MoveGfxDst(0,yofs);								// Handle title screen
	UnpackEGAShapeToScreen(&RefreshShp,0,0);
	FreeShape(&RefreshShp);

	MoveScreen(0,0);
	VW_InitDoubleBuffer();

	RF_NewPosition(0,0);

	RF_Refresh();

	SetUpdateBlock(0,0,RefreshShp.bmHdr.w,RefreshShp.bmHdr.h,3);
}


////////////////////////////////////////////////////////////////////////////
//
// InitFullScreenAnim() -- Initialize ALL necessary functions for full screen
//					  				animation types.
//
// filename - filename for background lbm.
// SpawnAll - spawn function to call to spawn all inital objects..
//
void InitFullScreenAnim(char *filename, void (*SpawnAll)())
{
	unsigned old_flags;

	old_flags = GE_SystemFlags.flags;
	GE_SystemFlags.flags &= ~(GEsf_Tiles | GEsf_Panning | GEsf_RefreshVec);

	CA_ClearMarks();

	RFL_InitSpriteList();
	InitObjArray();

	if (SpawnAll)
		SpawnAll();

	CA_CacheMarks(NULL);

	CalcInactivate();
	CalcSprites();

	InitLatchRefresh(filename);

	RF_ForceRefresh();
	RF_ForceRefresh();

	GE_SystemFlags.flags = old_flags;
}



///////////////////////////////////////////////////////////////////////////
//
// DoFullScreenAnim()	-- a General "Do-Every-Thing" function that
//									displays a full screen animation...
//
// filename - Filename of background lbm
//	SpawnAll	- Function to call to spawn all inital objects (REQUIRED)
//	CheckKey - Function to call every cycle - The function called must
//				  return a value of greater than zero (0) to terminate the
//				  animation cycle.									  (REQUIRED)
//	CleanUp	- Function to call upon exiting the animation. (OPTIONAL)
//
void DoFullScreenAnim(char *filename, void (*SpawnAll)(), short (*CheckKey)(),void (*CleanUp)())
{
	unsigned old_flags;
	boolean ExitAnim = false;

	// Save off the current system flags....

	old_flags = GE_SystemFlags.flags;
	GE_SystemFlags.flags &= ~(GEsf_Tiles | GEsf_Panning);

//	randomize();

	// Init refresh latch screen, initalize all object, and setup video mode.

	InitFullScreenAnim(filename,SpawnAll);

	VW_FadeIn();

	while (!ExitAnim)
	{
		CalcInactivate();
		CalcSprites();
		RF_Refresh();

		ExitAnim = (boolean)CheckKey();
	}

//	RemoveBOBList(player);
//	CalcInactivate();

	if (CleanUp)
		CleanUp();

	// Restore old system flags...

	GE_SystemFlags.flags = old_flags;
}

#endif

//--------------------------------------------------------------------------
// FindFile()
//--------------------------------------------------------------------------
boolean FindFile(char *filename,char *disktext,char disknum)
{
	extern boolean splitscreen;

	char command[100];
	char choices[]={sc_Escape,sc_Space,0},drive[2];
	boolean fadeitout=false,rt_code=2;

	if (!disktext)
		disktext = GAMENAME;
	drive[0] = getdisk() + 'A';
	drive[1] = 0;
	while (rt_code == 2)
	{
		if (Verify(filename))
			rt_code = true;
		else
		{
			if (ge_textmode)
			{
				clrscr();
				gotoxy(1,1);
				printf("\nInsert %s disk %d into drive %s.\n",disktext,disknum,drive);
				printf("Press SPACE to continue, ESC to abort.\n");
			}
			else
			{
				if (splitscreen)
				{
					bufferofs = displayofs = screenloc[screenpage];
					CenterWindow(38,5);
				}
				else
				{
					bufferofs = displayofs = 0;
					US_CenterWindow(38,5);
				}

				strcpy(command,"\nInsert ");
				strcat(command,disktext);
				strcat(command," disk");
				if (disknum != -1)
				{
					strcat(command," ");
					itoa(disknum,command+strlen(command),10);
				}
				strcat(command," into drive ");
				strcat(command,drive);
				strcat(command,".");
				US_CPrint(command);
				US_CPrint("Press SPACE to continue, ESC to abort.");
			}

			sound(300);
			VW_WaitVBL(20);
			nosound();

			if (!ge_textmode)
			{
				if (screenfaded)
				{
					VW_FadeIn();
					fadeitout=true;
				}
			}
			if (GetKeyChoice(choices,true) == sc_Escape)
				rt_code = false;
		}
	}

	if (!ge_textmode)
		if (fadeitout)
			VW_FadeOut();

	return(rt_code);
}

#if 0
//--------------------------------------------------------------------------
// CacheAll()
//--------------------------------------------------------------------------
void CacheAV(char *title)
{
	if (Verify("EGAGRAPH."EXT))
	{
		CA_CacheMarks(title);
		if (!FindFile("EGAGRAPH."EXT,AUDIO_DISK))
			TrashProg("Can't find graphics files.");

// cache in audio

		current_disk = AUDIO_DISK;
	}
	else
	{

// cache in audio

		if (!FindFile("EGAGRAPH."EXT,VIDEO_DISK))
			TrashProg("Can't find audio files.");
		CA_CacheMarks(title);

		current_disk = VIDEO_DISK;
	}
}
#endif

#ifdef TEXT_PRESENTER
//--------------------------------------------------------------------------
//
//                         TEXT PRESENTER CODE
//
//--------------------------------------------------------------------------

typedef enum pi_stype {pis_pic2x,pis_latch_pic} pi_stype;


typedef struct {						// 4 bytes
	unsigned shapenum;
	pi_stype shape_type;
} pi_shape_info;

#define pia_active	0x01

typedef struct {						// 10 bytes
	char baseshape;
	char frame;
	char maxframes;
	short delay;
	short maxdelay;
	short x,y;
} pi_anim_info;

	#define PI_CASE_SENSITIVE

	#define PI_RETURN_CHAR			'\n'
	#define PI_CONTROL_CHAR			'^'

	#define PI_CNVT_CODE(c1,c2)	((c1)|(c2<<8))

// shape table provides a way for the presenter to access and
// display any shape.
//
pi_shape_info far pi_shape_table[] = {

											{BOLTOBJPIC,pis_pic2x},				// 0
											{NUKEOBJPIC,pis_pic2x},
											{SKELETON_1PIC,pis_pic2x},
											{EYE_WALK1PIC,pis_pic2x},
											{ZOMB_WALK1PIC,pis_pic2x},

											{TIMEOBJ1PIC,pis_pic2x},			// 5
											{POTIONOBJPIC,pis_pic2x},
											{RKEYOBJPIC,pis_pic2x},
											{YKEYOBJPIC,pis_pic2x},
											{GKEYOBJPIC,pis_pic2x},

											{BKEYOBJPIC,pis_pic2x},				// 10
											{RGEM1PIC,pis_pic2x},
											{GGEM1PIC,pis_pic2x},
											{BGEM1PIC,pis_pic2x},
											{YGEM1PIC,pis_pic2x},

											{PGEM1PIC,pis_pic2x},				// 15
											{CHESTOBJPIC,pis_pic2x},
											{PSHOT1PIC,pis_pic2x},
											{RED_DEMON1PIC,pis_pic2x},
											{MAGE1PIC,pis_pic2x},

											{BAT1PIC,pis_pic2x},					// 20
											{GREL1PIC,pis_pic2x},
											{GODESS_WALK1PIC,pis_pic2x},
											{ANT_WALK1PIC,pis_pic2x},
											{FATDEMON_WALK1PIC,pis_pic2x},

											{SUCCUBUS_WALK1PIC,pis_pic2x},	//25
											{TREE_WALK1PIC,pis_pic2x},
											{DRAGON_WALK1PIC,pis_pic2x},
											{BUNNY_LEFT1PIC,pis_pic2x},

};

// anim table holds info about each different animation.
//
pi_anim_info far pi_anim_table[] = {{0,0,3,0,10},		// 0		BOLT
												{1,0,3,0,10},     //       NUKE
												{2,0,4,0,10},     //       SKELETON
												{3,0,3,0,10},     //       EYE
												{4,0,3,0,10},     //       ZOMBIE

												{5,0,2,0,10},     // 5     FREEZE TIME
												{11,0,2,0,10},    //			RED GEM
												{12,0,2,0,10},    //       GREEN GEM
												{13,0,2,0,10},    //       BLUE GEM
												{14,0,2,0,10},    //       YELLOW GEM

												{15,0,2,0,10},    // 10    PURPLE GEM
												{17,0,2,0,10},    //       PLAYER'S SHOT
												{18,0,3,0,10},    //       RED DEMON
												{19,0,2,0,10},    //       MAGE
												{20,0,4,0,10},    //       BAT

												{21,0,2,0,10},    // 15    GRELMINAR
												{22,0,3,0,10},    //       GODESS
												{23,0,3,0,10},    //       ANT
												{24,0,4,0,10},    //       FAT DEMON
												{25,0,4,0,10},    //       SUCCUBUS

												{26,0,2,0,10},    // 20    TREE
												{27,0,3,0,10},    //       DRAGON
												{28,0,2,0,10},    //       BUNNY
};

// anim list is created on the fly from the anim table...
// this allows a single animation to be display in more than
// one place...
//
pi_anim_info far pi_anim_list[PI_MAX_ANIMS];
boolean pi_recursing=false;

//--------------------------------------------------------------------------
// Presenter() - DANGEROUS DAVE "Presenter()" is more up-to-date than this.
//
//
// Active control codes:
//
//  ^CE				- center text between 'left margin' and 'right margin'
//  ^FCn				- set font color
//  ^LMnnn			- set left margin (if 'nnn' == "fff" uses current x)
//  ^RMnnn			- set right margin (if 'nnn' == "fff" uses current x)
//  ^EP				- end of page (waits for up/down arrow)
//  ^PXnnn			- move x to coordinate 'n'
//  ^PYnnn			- move y to coordinate 'n'
//  ^XX				- exit presenter
//  ^LJ				- left justify  --\ ^RJ doesn't handle imbedded control
//  ^RJ				- right justify --/ codes properly. Use with caution.
//  ^BGn	 			- set background color
//  ^ANnn			- define animation
//  ^SHnnn			- display shape 'n' at current x,y
//
//
// Future control codes:
//
//  ^OBnnn			- activate object 'n'
//  ^FL				- flush to edges (whatever it's called)
//
//
// Other info:
//
// All 'n' values are hex numbers (0 - f), case insensitive.
// The number of N's listed is the number of digits REQUIRED by that control
// code. (IE: ^LMnnn MUST have 3 values! --> 003, 1a2, 01f, etc...)
//
// If a line consists only of control codes, the cursor is NOT advanced
// to the next line (the ending <CR><LF> is skipped). If just ONE non-control
// code is added, the number "8" for example, then the "8" is displayed
// and the cursor is advanced to the next line.
//
// ^CE must be on the same line as the text it should center!
//
//--------------------------------------------------------------------------
void Presenter(PresenterInfo *pi)
{
#ifdef AMIGA
	XBitMap **font = pi->font;

	#define ch_width(ch) font[ch]->pad
	char font_height = font[0]->Rows;
#else
	fontstruct _seg *font = (fontstruct _seg *)grsegs[STARTFONT];

	#define MAX_PB 150
	#define ch_width(ch) font->width[ch]
	char font_height = font->height-1;		// "-1" squeezes font vertically
	char pb[MAX_PB];
	short length;
#endif

	enum {jm_left,jm_right,jm_flush};
	char justify_mode = jm_left;
	boolean centering=false;

	short bgcolor = pi->bgcolor;
	short xl=pi->xl,yl=pi->yl,xh=pi->xh,yh=pi->yh;
	short cur_x = xl, cur_y = yl;
	char far *first_ch = pi->script[0];

	char far *scan_ch,temp;
	short scan_x,PageNum=0,numanims=0;
	boolean up_released=true,dn_released=true;
	boolean presenting=true,start_of_line=true;

// if set background is first thing in file, make sure initial screen
// clear uses this color.
//
	if (!_fstrncmp(first_ch,"^BG",3))
		bgcolor = PI_VALUE(first_ch+3,1);

	if (!pi_recursing)
	{
		PurgeAllGfx();
		CachePage(first_ch);
	}
	VW_Bar(xl,yl,xh-xl+1,yh-yl+1,bgcolor);

	while (presenting)
	{
//
// HANDLE WORD-WRAPPING TEXT
//
		if (*first_ch != PI_CONTROL_CHAR)
		{
			start_of_line = false;

	// Parse script until one of the following:
	//
	// 1) text extends beyond right margin
	// 2) NULL termination is reached
	// 3) PI_RETURN_CHAR is reached
	// 4) PI_CONTROL_CHAR is reached
	//
			scan_x = cur_x;
			scan_ch = first_ch;
			while ((scan_x+ch_width(*scan_ch) <= xh) && (*scan_ch) &&
					 (*scan_ch != PI_RETURN_CHAR) && (*scan_ch != PI_CONTROL_CHAR))
				scan_x += ch_width(*scan_ch++);

	// if 'text extends beyond right margin', scan backwards for
	// a SPACE
	//
			if (scan_x+ch_width(*scan_ch) > xh)
			{
				short last_x = scan_x;
				char far *last_ch = scan_ch;

				while ((scan_ch != first_ch) && (*scan_ch != ' ') && (*scan_ch != PI_RETURN_CHAR))
					scan_x -= ch_width(*scan_ch--);

				if (scan_ch == first_ch)
					scan_ch = last_ch, scan_x = last_x;
			}

	// print current line
	//
#ifdef AMIGA
			while (first_ch < scan_ch)
			{
				qBlit(font[*first_ch++],pi->dst,cur_x,cur_y);
//				qBlit(font[*first_ch],pi->dst,cur_x,cur_y);
//				cur_x += ch_width(*first_ch++);
			}
#else
			temp = *scan_ch;
			*scan_ch = 0;

			if ((justify_mode == jm_right)&&(!centering))
			{
				unsigned width,height;

				VWL_MeasureString(first_ch,&width,&height,font);
				cur_x = xh-width;
				if (cur_x < xl)
					cur_x = xl;
			}

			px = cur_x;
			py = cur_y;

			length = scan_ch-first_ch+1;		// USL_DrawString only works with
			if (length > MAX_PB)
				Quit("Presenter(): Print buffer string too long!");
			_fmemcpy(pb,first_ch,length);    // near pointers...

			if (*first_ch != '\n')
				USL_DrawString(pb);

			*scan_ch = temp;
			first_ch = scan_ch;
#endif
			cur_x = scan_x;
			centering = false;

	// skip SPACES / RETURNS at end of line
	//
			if ((*first_ch==' ') || (*first_ch==PI_RETURN_CHAR))
				first_ch++;

	// PI_CONTROL_CHARs don't advance to next character line
	//
			if (*scan_ch != PI_CONTROL_CHAR)
			{
				cur_x = xl;
				cur_y += font_height;
			}
		}
		else
//
// HANDLE CONTROL CODES
//
		{
			PresenterInfo endmsg;
			pi_anim_info far *anim;
			pi_shape_info far *shape_info;
			unsigned shapenum;
			short length;
			char far *s;

			if (first_ch[-1] == '\n')
				start_of_line = true;

			first_ch++;
#ifndef PI_CASE_SENSITIVE
			*first_ch=toupper(*first_ch);
			*(first_ch+1)=toupper(*(first_ch+1));
#endif
			switch (*((unsigned far *)first_ch)++)
			{
		// CENTER TEXT ------------------------------------------------------
		//
				case PI_CNVT_CODE('C','E'):
					length = 0;
					s = first_ch;
					while (*s && (*s != PI_RETURN_CHAR))
					{
						switch (*s)
						{
							case PI_CONTROL_CHAR:
								s++;
								switch (*((unsigned *)s)++)
								{
#ifndef AMIGA
									case PI_CNVT_CODE('F','C'):
									case PI_CNVT_CODE('B','G'):
										s++;
									break;
#endif

									case PI_CNVT_CODE('L','M'):
									case PI_CNVT_CODE('R','M'):
									case PI_CNVT_CODE('S','H'):
									case PI_CNVT_CODE('P','X'):
									case PI_CNVT_CODE('P','Y'):
										s += 3;
									break;

									case PI_CNVT_CODE('L','J'):
									case PI_CNVT_CODE('R','J'):
										// No parameters to pass over!
									break;
								}
							break;

							default:
								length += ch_width(*s++);
							break;
						}
					}
					cur_x = ((xh-xl+1)-length)/2;
					centering = true;
				break;

		// DRAW SHAPE -------------------------------------------------------
		//
				case PI_CNVT_CODE('S','H'):
					shapenum = PI_VALUE(first_ch,3);
					first_ch += 3;
					shape_info = &pi_shape_table[shapenum];
					switch (shape_info->shape_type)
					{
						short width;

						case pis_pic2x:
							cur_x = ((cur_x+2) + 7) & 0xFFF8;
							width=BoxAroundPic(cur_x-2,cur_y-1,shape_info->shapenum,pi);
							VW_DrawPic2x(cur_x>>3,cur_y,shape_info->shapenum);
							cur_x += width;
						break;
					}
				break;

		// INIT ANIMATION ---------------------------------------------------
		//
				case PI_CNVT_CODE('A','N'):
					shapenum = PI_VALUE(first_ch,2);
					first_ch += 2;
					_fmemcpy(&pi_anim_list[numanims],&pi_anim_table[shapenum],sizeof(pi_anim_info));
					anim = &pi_anim_list[numanims++];
					shape_info = &pi_shape_table[anim->baseshape+anim->frame];
					switch (shape_info->shape_type)
					{
						short width;

						case pis_pic2x:
							cur_x = ((cur_x+2) + 7) & 0xFFF8;
							width=BoxAroundPic(cur_x-2,cur_y-1,shape_info->shapenum,pi);
							VW_DrawPic2x(cur_x>>3,cur_y,shape_info->shapenum);
							anim->x = cur_x>>3;
							anim->y = cur_y;
							cur_x += width;
						break;
					}
				break;

#ifndef AMIGA
		// FONT COLOR -------------------------------------------------------
		//
				case PI_CNVT_CODE('F','C'):
					fontcolor = bgcolor ^ PI_VALUE(first_ch++,1);
				break;
#endif

		// BACKGROUND COLOR -------------------------------------------------
		//
				case PI_CNVT_CODE('B','G'):
					bgcolor = PI_VALUE(first_ch++,1);
				break;

		// LEFT MARGIN ------------------------------------------------------
		//
				case PI_CNVT_CODE('L','M'):
					shapenum = PI_VALUE(first_ch,3);
					first_ch += 3;
					if (shapenum == 0xfff)
						xl = cur_x;
					else
						xl = shapenum;
				break;

		// RIGHT MARGIN -----------------------------------------------------
		//
				case PI_CNVT_CODE('R','M'):
					shapenum = PI_VALUE(first_ch,3);
					first_ch += 3;
					if (shapenum == 0xfff)
						xh = cur_x;
					else
						xh = shapenum;
				break;

		// SET X COORDINATE -------------------------------------------------
		//
				case PI_CNVT_CODE('P','X'):
					cur_x = PI_VALUE(first_ch,3);
					first_ch += 3;
				break;

		// SET Y COORDINATE -------------------------------------------------
		//
				case PI_CNVT_CODE('P','Y'):
					cur_y = PI_VALUE(first_ch,3);
					first_ch += 3;
				break;

		// LEFT JUSTIFY -----------------------------------------------------
		//
				case PI_CNVT_CODE('L','J'):
					justify_mode = jm_left;
				break;

		// RIGHT JUSTIFY ----------------------------------------------------
		//
				case PI_CNVT_CODE('R','J'):
					justify_mode = jm_right;
				break;

		// END OF PAGE ------------------------------------------------------
		//
				case PI_CNVT_CODE('E','P'):
					if (pi_recursing)
						Quit("Presenter(): Can't use ^EP when recursing!");

					endmsg.xl = cur_x;
					endmsg.yl = yh-(font_height+2);
					endmsg.xh = xh;
					endmsg.yh = yh;
					endmsg.bgcolor = bgcolor;
					endmsg.ltcolor = pi->ltcolor;
					endmsg.dkcolor = pi->dkcolor;
					endmsg.script[0] = (char far *)"^CE^FC8-  ^FC0ESC ^FC8to return to play, or ^FC0ARROW KEYS ^FC8to page through more Help  -^XX";

					pi_recursing = true;
					Presenter(&endmsg);
					pi_recursing = false;

#ifndef AMIGA
					if (screenfaded)
						VW_FadeIn();
					VW_ColorBorder(8 | 56);
#endif

					while (1)
					{
#ifndef AMIGA
						long newtime;

						VW_WaitVBL(1);
						newtime = TimeCount;
						realtics = tics = newtime-lasttimecount;
						lasttimecount = newtime;
#else
						WaitVBL(1);
						CALC_TICS;
#endif
						AnimatePage(numanims);
						IN_ReadControl(0,&control);

						if (control.button1 || Keyboard[1])
						{
							presenting=false;
							break;
						}
						else
						{
							if (ControlTypeUsed != ctrl_Keyboard)
								control.dir = dir_None;

							if (((control.dir == dir_North) || (control.dir == dir_West)) && (PageNum))
							{
								if (up_released)
								{
									PageNum--;
									up_released = false;
									break;
								}
							}
							else
							{
								up_released = true;
								if (((control.dir == dir_South) || (control.dir == dir_East)) && (PageNum < pi->numpages-1))
								{
									if (dn_released)
									{
										PageNum++;
										dn_released = false;
										break;
									}
								}
								else
									dn_released = true;
							}
						}
					}

					cur_x = xl;
					cur_y = yl;
					if (cur_y+font_height > yh)
						cur_y = yh-font_height;
					first_ch = pi->script[PageNum];

					numanims = 0;
					PurgeAllGfx();
					CachePage(first_ch);

					VW_Bar(xl,yl,xh-xl+1,yh-yl+1,bgcolor);
				break;

		// EXIT PRESENTER ---------------------------------------------------
		//
				case PI_CNVT_CODE('X','X'):
					presenting=false;
				break;
			}

			if ((first_ch[0] == ' ') && (first_ch[1] == '\n') && start_of_line)
				first_ch += 2;
		}
	}
}

//--------------------------------------------------------------------------
// ResetAnims()
//--------------------------------------------------------------------------
void ResetAnims()
{
	pi_anim_list[0].baseshape = -1;
}

//--------------------------------------------------------------------------
// AnimatePage()
//--------------------------------------------------------------------------
void AnimatePage(short numanims)
{
	pi_anim_info far *anim=pi_anim_list;
	pi_shape_info far *shape_info;

	while (numanims--)
	{
		anim->delay += tics;
		if (anim->delay >= anim->maxdelay)
		{
			anim->delay = 0;
			anim->frame++;
			if (anim->frame == anim->maxframes)
				anim->frame = 0;

#if ANIM_USES_SHAPETABLE
			shape_info = &pi_shape_table[anim->baseshape+anim->frame];
#else
			shape_info = &pi_shape_table[anim->baseshape];
#endif
			switch (shape_info->shape_type)
			{
				case pis_pic2x:
#if ANIM_USES_SHAPETABLE
					VW_DrawPic2x(anim->x,anim->y,shape_info->shapenum);
#else
					VW_DrawPic2x(anim->x,anim->y,shape_info->shapenum+anim->frame);
#endif
				break;
			}
		}
		anim++;
	}
}

//--------------------------------------------------------------------------
// BoxAroundPic()
//--------------------------------------------------------------------------
short BoxAroundPic(short x1, short y1, unsigned picnum, PresenterInfo *pi)
{
	short x2,y2;

	x2 = x1+(pictable[picnum-STARTPICS].width<<4)+2;
	y2 = y1+(pictable[picnum-STARTPICS].height)+1;
	VWB_Hlin(x1,x2,y1,pi->ltcolor);
	VWB_Hlin(x1,x2,y2,pi->dkcolor);
	VWB_Vlin(y1,y2,x1,pi->ltcolor);
	VWB_Vlin(y1,y2,x1+1,pi->ltcolor);
	VWB_Vlin(y1,y2,x2,pi->dkcolor);
	VWB_Vlin(y1,y2,x2+1,pi->dkcolor);

	return(x2-x1+1);
}

//--------------------------------------------------------------------------
// PurgeAllGfx()
//--------------------------------------------------------------------------
void PurgeAllGfx()
{
	ResetAnims();
	FreeUpMemory();
}

//--------------------------------------------------------------------------
// CachePage()
//--------------------------------------------------------------------------
void CachePage(char far *script)
{
	pi_anim_info far *anim;
	short loop;
	unsigned shapenum;
	boolean end_of_page=false;
	short numanims=0;

	while (!end_of_page)
	{
		switch (*script++)
		{
			case PI_CONTROL_CHAR:
#ifndef PI_CASE_SENSITIVE
				*script=toupper(*script);
				*(script+1)=toupper(*(script+1));
#endif
				switch (*((unsigned far *)script)++)
				{
					case PI_CNVT_CODE('S','H'):
						shapenum = PI_VALUE(script,3);
						script += 3;
						CA_MarkGrChunk(pi_shape_table[shapenum].shapenum);
					break;

					case PI_CNVT_CODE('A','N'):
						shapenum = PI_VALUE(script,2);
						script += 2;

						if (numanims++ == PI_MAX_ANIMS)
							Quit("CachePage(): Too many anims on one page.");

						anim = &pi_anim_table[shapenum];
#if ANIM_USES_SHAPETABLE
						for (loop=anim->baseshape;loop < anim->baseshape+anim->maxframes; loop++)
							CA_MarkGrChunk(pi_shape_table[loop].shapenum);
#else
						shapenum = pi_shape_table[anim->baseshape].shapenum;
						for (loop=0; loop<anim->maxframes; loop++)
							CA_MarkGrChunk(shapenum+loop);
#endif
					break;

					case PI_CNVT_CODE('X','X'):
					case PI_CNVT_CODE('E','P'):
						end_of_page = true;
					break;
				}
			break;
		}
	}

	CA_CacheMarks(NULL);
}

//--------------------------------------------------------------------------
// PI_VALUE()
//--------------------------------------------------------------------------
unsigned PI_VALUE(char far *ptr,char num_nybbles)
{
	char ch,nybble,shift;
	unsigned value=0;

	for (nybble=0; nybble<num_nybbles; nybble++)
	{
		shift = 4*(num_nybbles-nybble-1);

		ch = *ptr++;
		if (isxdigit(ch))
			if (isalpha(ch))
				value |= (toupper(ch)-'A'+10)<<shift;
			else
				value |= (ch-'0')<<shift;
	}

	return(value);
}

//--------------------------------------------------------------------------
// LoadPresenterScript()
//--------------------------------------------------------------------------
long LoadPresenterScript(char *filename,PresenterInfo *pi)
{
#pragma warn -pia
	long size;

	if (!(size=BLoad(filename,&pi->scriptstart)))
		return(0);
	pi->script[0] = MK_FP(pi->scriptstart,0);
	pi->script[0][size-1] = 0;		 			// Last byte is trashed!
	InitPresenterScript(pi);

	return(size);
#pragma warn +pia
}

//-------------------------------------------------------------------------
// FreePresenterScript()
//-------------------------------------------------------------------------
void FreePresenterScript(PresenterInfo *pi)
{
	if (pi->script)
		MM_FreePtr(&pi->scriptstart);
}

//-------------------------------------------------------------------------
// InitPresenterScript()
//-------------------------------------------------------------------------
void InitPresenterScript(PresenterInfo *pi)
{
	char far *script = pi->script[0];

	pi->numpages = 1;		// Assume at least 1 page
	while (*script)
	{
		switch (*script++)
		{
			case PI_CONTROL_CHAR:
#ifndef PI_CASE_SENSITIVE
				*script=toupper(*script);
				*(script+1)=toupper(*(script+1));
#endif
				switch (*((unsigned far *)script)++)
				{
					case PI_CNVT_CODE('E','P'):
						if (pi->numpages < PI_MAX_PAGES)
							pi->script[pi->numpages++] = script;
						else
							TrashProg("GE ERROR: Too many Presenter() pages. --> %d",pi->numpages);
					break;
				}
			break;

			case '\r':
				if (*script == '\n')
				{
					*(script-1) = ' ';
					script++;
				}
			break;
		}
	}

	pi->numpages--;	// Last page defined is not a real page.
}
#endif


//-------------------------------------------------------------------------
// AnimateWallList()
//-------------------------------------------------------------------------
void AnimateWallList(void)
{
	walltype *wall, *check;
	unsigned i;
	int tile,org_tile;

	if (wall_anim_delay>0)
	{
		wall_anim_delay-=realtics;
		return;
	}

	//
	// Re-Init our counter...
	//

	wall_anim_delay = wall_anim_time;

	//
	// Clear all previous flags marking animation being DONE.
	//

	for (i=0;i<NUMFLOORS;i++)
		TILE_FLAGS(i) &= ~tf_MARKED;


	//
	// Run though wall list updating only then needed animations
	//

	for (wall=&walls[1];wall<rightwall;wall++)
	{
		org_tile = tile = wall->color + wall_anim_pos[wall->color];

		if (ANIM_FLAGS(tile))
		{
			do
			{
				if (!(TILE_FLAGS(tile) & tf_MARKED))
				{
					//
					// update our offset table (0-NUMANIMS)
					//

					wall_anim_pos[tile] += (char signed)ANIM_FLAGS(tile+(char signed)wall_anim_pos[tile]);

					//
					// Mark tile as being already updated..
					//

					TILE_FLAGS(tile) |= tf_MARKED;
				}

				//
				// Check rest of tiles in this animation string...
				//

				tile += (char signed)ANIM_FLAGS(tile);

			} while (tile != org_tile);
		}
	}
}