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/* File: main-ibm.c */
/*
* Copyright (c) 1997 Ben Harrison, and others
*
* This software may be copied and distributed for educational, research,
* and not for profit purposes provided that this copyright and statement
* are included in all such copies.
*/
/* Purpose: Visual Display Support for "term.c", for the IBM */
/*
* Original code by "Billy Tanksley (wtanksle@ucsd.edu)"
* Use "Makefile.ibm" to compile Angband using this file.
*
* Support for DJGPP v2 by "Scott Egashira (egashira@u.washington.edu)"
*
* Extensive modifications by "Ben Harrison (benh@phial.com)",
* including "collation" of the Watcom C/C++ and DOS-286 patches.
*
* Watcom C/C++ changes by "David Boeren (akemi@netcom.com)"
* Use "Makefile.wat" to compile this file with Watcom C/C++, and
* be sure to define "USE_IBM" and "USE_WAT".
*
* DOS-286 (conio.h) changes by (Roland Jay Roberts (jay@map.com)
* Use "Makefile.286" (not ready) to compile this file for DOS-286,
* and be sure to define "USE_IBM", "USE_WAT", and "USE_286". Also,
* depending on your compiler, you may need to define "USE_CONIO".
*
* True color palette support by "Mike Marcelais (michmarc@microsoft.com)",
* with interface to the "color_table" array by Ben Harrison.
*
* Both "shift" keys are treated as "identical", and all the modifier keys
* (control, shift, alt) are ignored when used with "normal" keys, unless
* they modify the underlying "ascii" value of the key. You must use the
* new "user pref files" to be able to interact with the keypad and such.
*
* The "lib/user/pref-ibm.prf" file contains macro definitions and possible
* alternative color set definitions. The "lib/user/font-ibm.prf" contains
* attr/char mappings for walls and floors and such.
*
* Note the "Term_user_ibm()" function hook, which could allow the user
* to interact with the "main-ibm.c" visual system. Currently this hook
* is unused, but, for example, it could allow the user to toggle "sound"
* or "graphics" modes, or to select the number of screen rows, with the
* extra screen rows being used for the mirror window.
*/
#include "angband.h"
#ifdef USE_IBM
/*
* Use a "virtual" screen to "buffer" screen writes.
*/
#define USE_VIRTUAL
#ifdef USE_DOSSOCK
#include <arpa/inet.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <netdb.h>
#endif
#include <bios.h>
#include <dos.h>
#include <dir.h>
#ifdef USE_WAT
# include <conio.h>
# ifdef USE_CONIO
# else /* USE_CONIO */
# include <graph.h>
# define bioskey(C) _bios_keybrd(C)
# endif /* USE_CONIO */
# ifndef USE_286
# define int86(a, b, c) int386(a, b, c)
# endif
# define inportb(x) inp(x)
# define outportb(x, y) outp(x, y)
#else /* USE_WAT */
# if __DJGPP__ > 1
# include <pc.h>
# include <osfcn.h>
# else /* __DJGPP__ > 1 */
# ifdef __DJGPP__
# error "Upgrade to version 2.0 of DJGPP"
# endif /* __DJGPP__ */
# endif /* __DJGPP__ > 1 */
#endif /* USE_WAT */
#ifdef USE_CONIO
# include <conio.h>
/*
* Hack -- write directly to video card
*/
extern int directvideo = 1;
/*
* Hack -- no virtual screen
*/
# undef USE_VIRTUAL
#endif /* USE_CONIO */
/*
* Keypress input modifier flags (hard-coded by DOS)
*/
#define K_RSHIFT 0 /* Right shift key down */
#define K_LSHIFT 1 /* Left shift key down */
#define K_CTRL 2 /* Ctrl key down */
#define K_ALT 3 /* Alt key down */
#define K_SCROLL 4 /* Scroll lock on */
#define K_NUM 5 /* Num lock on */
#define K_CAPS 6 /* Caps lock on */
#define K_INSERT 7 /* Insert on */
/*
* Foreground color bits (hard-coded by DOS)
*/
#define VID_BLACK 0x00
#define VID_BLUE 0x01
#define VID_GREEN 0x02
#define VID_CYAN 0x03
#define VID_RED 0x04
#define VID_MAGENTA 0x05
#define VID_YELLOW 0x06
#define VID_WHITE 0x07
/*
* Bright text (hard-coded by DOS)
*/
#define VID_BRIGHT 0x08
/*
* Background color bits (hard-coded by DOS)
*/
#define VUD_BLACK 0x00
#define VUD_BLUE 0x10
#define VUD_GREEN 0x20
#define VUD_CYAN 0x30
#define VUD_RED 0x40
#define VUD_MAGENTA 0x50
#define VUD_YELLOW 0x60
#define VUD_WHITE 0x70
/*
* Blinking text (hard-coded by DOS)
*/
#define VUD_BRIGHT 0x80
/*
* Screen Size
*/
static int rows = 25;
static int cols = 80;
/*
* Physical Screen
*/
#ifdef USE_286
# define PhysicalScreen ((byte *)MK_FP(0xB800, 0x0000))
#else
# define PhysicalScreen ((byte *)(0xB800 << 4))
#endif
#ifdef USE_VIRTUAL
/*
* Virtual Screen Contents
*/
static byte *VirtualScreen;
#else
/*
* Physical screen access
*/
#define VirtualScreen PhysicalScreen
#endif
/*
* Hack -- the cursor "visibility"
*/
static int saved_cur_v;
static int saved_cur_high;
static int saved_cur_low;
#ifdef USE_CONIO
#else /* USE_CONIO */
/*
* This array is used for "wiping" the screen
*/
static byte wiper[160];
#endif /* USE_CONIO */
/*
* The main screen (currently the only screen)
*/
static term term_screen_body;
/*
* Choose between the "complex" and "simple" color methods
*/
static byte use_color_complex = FALSE;
/*
* The "complex" color set
*/
static long ibm_color_complex[16];
/*
* The "simple" color set
*
* This table is used by the "color" code to instantiate the "approximate"
* Angband colors using the only colors available on crappy monitors.
*
* The entries below are taken from the "color bits" defined above.
*
* Note that values from 16 to 255 are extremely ugly.
*
* The values below came from various sources, if you do not like them,
* get a better monitor, or edit "pref-ibm.prf" to use different codes.
*
* Note that many of the choices below suck, but so do crappy monitors.
*/
static byte ibm_color_simple[16] =
{
VID_BLACK, /* Dark */
VID_WHITE, /* White */
VID_CYAN, /* Slate XXX */
VID_RED | VID_BRIGHT, /* Orange XXX */
VID_RED, /* Red */
VID_GREEN, /* Green */
VID_BLUE, /* Blue */
VID_YELLOW, /* Umber XXX */
VID_BLACK | VID_BRIGHT, /* Light Dark */
VID_CYAN | VID_BRIGHT, /* Light Slate XXX */
VID_MAGENTA, /* Violet */
VID_YELLOW | VID_BRIGHT, /* Yellow */
VID_MAGENTA | VID_BRIGHT, /* Light Red XXX */
VID_GREEN | VID_BRIGHT, /* Light Green */
VID_BLUE | VID_BRIGHT, /* Light Blue */
VID_YELLOW /* Light Umber XXX */
};
/*
* Activate the "ibm_color_complex" palette information.
*
* Code by Mike Marcelais, with help from "The programmer's guide
* to the EGA and VGA video cards" [Farraro].
*
* On VGA cards, colors go through a double-indirection when looking
* up the `real' color when in 16 color mode. The color value in the
* attribute is looked up in the EGA color registers. Then that value
* is looked up in the VGA color registers. Then the color is displayed.
* This is done for compatability. However, the EGA registers are
* initialized by default to 0..5, 14, 7, 38..3F and not 0..F which means
* that unless these are reset, the VGA setpalette function will not
* update the correct palette register!
*
* DJGPP's GrSetColor() does _not_ set the EGA palette list, only the
* VGA color list.
*
* Note that the "traditional" method, using "int86(0x10)", is very slow
* when called in protected mode, so we use a faster method using video
* ports instead.
*
* On Watcom machines, we could simply use the special "_remapallpalette()"
* function, which not only sets both palette lists (see below) but also
* checks for legality of the monitor mode, but, if we are doing bitmapped
* graphics, that function forgets to set the EGA registers for some reason.
*/
static void activate_color_complex(void)
{
int i;
printf("%c%c%c%c", 8, 8, 8, 8);
#if 1
/* Edit the EGA palette */
inportb(0x3da);
/* Edit the colors */
for (i = 0; i < 16; i++)
{
/* Set color "i" */
outportb(0x3c0, i);
/* To value "i" */
outportb(0x3c0, i);
}
/* Use that EGA palette */
outportb(0x3c0, 0x20);
/* Edit VGA palette, starting at color zero */
outportb(0x3c8, 0);
/* Send the colors */
for (i = 0; i < 16; i++)
{
/* Send the red, green, blue components */
outportb(0x3c9, ((ibm_color_complex[i]) & 0xFF));
outportb(0x3c9, ((ibm_color_complex[i] >> 8) & 0xFF));
outportb(0x3c9, ((ibm_color_complex[i] >> 16) & 0xFF));
}
#else /* 1 */
/* Set the colors */
for (i = 0; i < 16; i++)
{
union REGS r;
/* Set EGA color */
r.h.ah = 0x10;
r.h.al = 0x00;
/* Set color "i" */
r.h.bl = i;
/* To value "i" */
r.h.bh = i;
/* Do it */
int86(0x10, &r, &r);
/* Set VGA color */
r.h.ah = 0x10;
r.h.al = 0x10;
/* Set color "i" */
r.h.bh = 0x00;
r.h.bl = i;
/* Use this "green" value */
r.h.ch = ((ibm_color_complex[i] >> 8) & 0xFF);
/* Use this "blue" value */
r.h.cl = ((ibm_color_complex[i] >> 16) & 0xFF);
/* Use this "red" value */
r.h.dh = ((ibm_color_complex[i]) & 0xFF);
/* Do it */
int86(0x10, &r, &r);
}
#endif /* 1 */
}
#ifdef SUPPORT_GAMMA
/*
* When set to TRUE, indicates that we can use gamma_table
*/
static bool gamma_table_ready = FALSE;
/*
* Build gamma correction table if requested and applicable
*/
static void setup_gamma_table(void)
{
static u16b old_gamma_val = 0;
/* (Re)build the table only when gamma value changes */
if (gamma_val == old_gamma_val) return;
/* Temporarily inactivate the table */
gamma_table_ready = FALSE;
/* Validate gamma_val */
if ((gamma_val <= 0) || (gamma_val >= 256))
{
/* Reset */
old_gamma_val = gamma_val = 0;
/* Leave it inactive */
return;
}
/* (Re)build the table */
build_gamma_table(gamma_val);
/* Remember gamma_val */
old_gamma_val = gamma_val;
/* Activate the table */
gamma_table_ready = TRUE;
}
#endif /* SUPPORT_GAMMA */
/*
* Note the use of "(x >> 2)" to convert an 8 bit value to a 6 bit value
* without losing much precision.
*/
static int Term_xtra_ibm_react(void)
{
int i;
/* Complex method */
if (use_color_complex)
{
long rv, gv, bv, code;
bool change = FALSE;
#ifdef SUPPORT_GAMMA
/* Build gamma_table */
setup_gamma_table();
#endif /* SUPPORT_GAMMA */
/* Save the default colors */
for (i = 0; i < 16; i++)
{
/* Extract desired values */
rv = angband_color_table[i][1];
gv = angband_color_table[i][2];
bv = angband_color_table[i][3];
#ifdef SUPPORT_GAMMA
/* Hack - Gamma correction */
if (gamma_table_ready)
{
rv = gamma_table[rv];
gv = gamma_table[gv];
bv = gamma_table[bv];
}
#endif /* SUPPORT_GAMMA */
/* 8 bit to 6 bit conversion */
rv = rv >> 2;
gv = gv >> 2;
bv = bv >> 2;
/* Extract a full color code */
code = ((rv) | (gv << 8) | (bv << 16));
/* Activate changes */
if (ibm_color_complex[i] != code)
{
/* Note the change */
change = TRUE;
/* Apply the desired color */
ibm_color_complex[i] = code;
}
}
/* Activate the palette if needed */
if (change) activate_color_complex();
}
/* Simple method */
else
{
/* Save the default colors */
for (i = 0; i < 16; i++)
{
/* Simply accept the desired colors */
ibm_color_simple[i] = angband_color_table[i][0];
}
}
/* Success */
return (0);
}
/*
* Hack -- set the cursor "visibility"
*/
static void curs_set(int v)
{
/* If needed */
if (saved_cur_v != v)
{
union REGS r;
/* Set cursor */
r.h.ah = 1;
/* Visible */
if (v)
{
/* Use the saved values */
r.h.ch = saved_cur_high;
r.h.cl = saved_cur_low;
}
/* Invisible */
else
{
/* Make it invisible */
r.h.ch = 0x20;
r.h.cl = 0x00;
}
/* Make the call */
int86(0x10, &r, &r);
/* Save the cursor state */
saved_cur_v = v;
}
}
/*
* Process an event (check for a keypress)
*
* The keypress processing code is often the most system dependant part
* of Angband, since sometimes even the choice of compiler is important.
*
* For the IBM, we divide all keypresses into two categories, first, the
* "normal" keys, including all keys required to play Angband, and second,
* the "special" keys, such as keypad keys, function keys, and various keys
* used in combination with various modifier keys.
*
* To simplify this file, we use Angband's "macro processing" ability, in
* combination with a specialized "pref-ibm.prf" file, to handle most of the
* "special" keys, instead of attempting to fully analyze them here. This
* file only has to determine when a "special" key has been pressed, and
* translate it into a simple string which signals the use of a "special"
* key, the set of modifiers used, if any, and the hardware scan code of
* the actual key which was pressed. To simplify life for the user, we
* treat both "shift" keys as identical modifiers.
*
* The final encoding is "^_MMMxSS\r", where "MMM" encodes the modifiers
* ("C" for control, "S" for shift, "A" for alt, or any ordered combination),
* and "SS" encodes the keypress (as the two "digit" hexadecimal encoding of
* the scan code of the key that was pressed), and the "^_" and "x" and "\r"
* delimit the encoding for recognition by the macro processing code.
*
* Some important facts about scan codes follow. All "normal" keys use
* scan codes from 1-58. The "function" keys use 59-68 (and 133-134).
* The "keypad" keys use 69-83. Escape uses 1. Enter uses 28. Control
* uses 29. Left Shift uses 42. Right Shift uses 54. PrtScrn uses 55.
* Alt uses 56. Space uses 57. CapsLock uses 58. NumLock uses 69.
* ScrollLock uses 70. The "keypad" keys which use scan codes 71-83
* are ordered KP7,KP8,KP9,KP-,KP4,KP5,KP6,KP+,KP1,KP2,KP3,INS,DEL.
*
* Using "bioskey(0x10)" instead of "bioskey(0)" apparently provides more
* information, including better access to the keypad keys in combination
* with various modifiers, but only works on "PC's after 6/1/86", and there
* is no way to determine if the function is provided on a machine. I have
* been told that without it you cannot detect, for example, control-left.
* The basic scan code + ascii value pairs returned by the keypad follow,
* with values in parentheses only available to "bioskey(0x10)".
*
* / * - + 1 2 3 4
* Norm: 352f 372a 4a2d 4e2b 4f00 5000 5100 4b00
* Shft: 352f 372a 4a2d 4e2b 4f31 5032 5133 4b34
* Ctrl: (9500) (9600) (8e00) (9000) 7500 (9100) 7600 7300
*
* 5 6 7 8 9 0 . Enter
* Norm: (4c00) 4d00 4700 4800 4900 5200 5300 (e00d)
* Shft: 4c35 4d36 4737 4838 4939 5230 532e (e00d)
* Ctrl: (8f00) 7400 7700 (8d00) 8400 (9200) (9300) (e00a)
*
* See "pref-ibm.prf" for the "standard" macros for various keys.
*
* Certain "bizarre" keypad keys (such as "enter") return a "scan code"
* of "0xE0", and a "usable" ascii value. These keys should be treated
* like the normal keys, see below. XXX XXX XXX Note that these "special"
* keys could be prefixed with an optional "ctrl-^" which would allow them
* to be used in macros without hurting their use in normal situations.
*/
static errr Term_xtra_ibm_event(int v)
{
int i, k, s;
bool mc = FALSE;
bool ms = FALSE;
bool ma = FALSE;
/* Hack -- Check for a keypress */
if (!v && !bioskey(1)) return (1);
/* Wait for a keypress */
k = bioskey(0x10);
/* Access the "modifiers" */
i = bioskey(2);
/* Extract the "scan code" */
s = ((k >> 8) & 0xFF);
/* Extract the "ascii value" */
k = (k & 0xFF);
/* Process "normal" keys */
if ((s <= 58) || (s == 0xE0))
{
/* Enqueue it */
if (k) Term_keypress(k);
/* Success */
return (0);
}
/* Extract the modifier flags */
if (i & (1 << K_CTRL)) mc = TRUE;
if (i & (1 << K_LSHIFT)) ms = TRUE;
if (i & (1 << K_RSHIFT)) ms = TRUE;
if (i & (1 << K_ALT)) ma = TRUE;
/* Begin a "macro trigger" */
Term_keypress(31);
/* Hack -- Send the modifiers */
if (mc) Term_keypress('C');
if (ms) Term_keypress('S');
if (ma) Term_keypress('A');
/* Introduce the hexidecimal scan code */
Term_keypress('x');
/* Encode the hexidecimal scan code */
Term_keypress(hexsym[s / 16]);
Term_keypress(hexsym[s % 16]);
/* End the "macro trigger" */
Term_keypress(13);
/* Success */
return (0);
}
/*
* Handle a "special request"
*
* The given parameters are "valid".
*/
static errr Term_xtra_ibm(int n, int v)
{
int i;
/* Analyze the request */
switch (n)
{
/* Make a "bell" noise */
case TERM_XTRA_NOISE:
{
/* Make a bell noise */
(void)write(1, "\007", 1);
/* Success */
return (0);
}
/* Set the cursor shape */
case TERM_XTRA_SHAPE:
{
/* Set cursor shape */
curs_set(v);
/* Success */
return (0);
}
/* Flush one line of output */
case TERM_XTRA_FROSH:
{
#ifdef USE_VIRTUAL
# ifdef USE_WAT
/* Copy the virtual screen to the physical screen */
memcpy(PhysicalScreen + (v*160), VirtualScreen + (v*160), 160);
# else /* USE_WAT */
/* Apply the virtual screen to the physical screen */
ScreenUpdateLine(VirtualScreen + ((v*cols) << 1), v);
# endif /* USE_WAT */
#endif /* USE_VIRTUAL */
/* Success */
return (0);
}
/* Clear the screen */
case TERM_XTRA_CLEAR:
{
#ifdef USE_CONIO
/* Clear the screen */
clrscr();
#else /* USE_CONIO */
/* Clear each line (virtual or physical) */
for (i = 0; i < rows; i++)
{
/* Clear the line */
memcpy((VirtualScreen + ((i*cols) << 1)), wiper, (cols << 1));
}
# ifdef USE_VIRTUAL
# ifdef USE_WAT
/* Copy the virtual screen to the physical screen */
memcpy(PhysicalScreen, VirtualScreen, 25*80*2);
# else /* USE_WAT */
/* Erase the physical screen */
ScreenClear();
# endif /* USE_WAT */
# endif /* USE_VIRTUAL */
#endif /* USE_CONIO */
/* Success */
return (0);
}
/* Process events */
case TERM_XTRA_EVENT:
{
irc_poll();
/* Process one event */
return (Term_xtra_ibm_event(v));
}
/* Flush events */
case TERM_XTRA_FLUSH:
{
/* Strip events */
while (!Term_xtra_ibm_event(FALSE)) /* loop */;
/* Success */
return (0);
}
/* React to global changes */
case TERM_XTRA_REACT:
{
/* React to "color_table" changes */
return (Term_xtra_ibm_react());
}
/* Delay for some milliseconds */
case TERM_XTRA_DELAY:
{
/* Delay if needed */
if (v > 0) delay(v);
/* Success */
return (0);
}
/*
* Scans for subdirectories in a directory "scansubdir_dir"
* and place teh result in "scansubdir_result/scansubdir_max"
*/
case TERM_XTRA_SCANSUBDIR:
{
struct ffblk f;
int done;
done = findfirst(format("%s\\*", scansubdir_dir), &f, FA_DIREC);
scansubdir_max = 0;
while ((!done) && (scansubdir_max < 255))
{
if ((f.ff_attrib & FA_DIREC) && (strcmp(f.ff_name, ".")) && (strcmp(f.ff_name, "..")))
{
string_free(scansubdir_result[scansubdir_max]);
scansubdir_result[scansubdir_max] = string_make(f.ff_name);
scansubdir_max++;
}
done = findnext(&f);
}
return 0;
}
}
/* Unknown request */
return (1);
}
/*
* Move the cursor
*
* The given parameters are "valid".
*/
static errr Term_curs_ibm(int x, int y)
{
#ifdef USE_WAT
# ifdef USE_CONIO
/* Place the cursor */
gotoxy(x + 1, y + 1);
# else /* USE_CONIO */
union REGS r;
r.h.ah = 2;
r.h.bh = 0;
r.h.dl = x;
r.h.dh = y;
/* Place the cursor */
int86(0x10, &r, &r);
# endif /* USE_CONIO */
#else /* USE_WAT */
/* Move the cursor */
ScreenSetCursor(y, x);
#endif /* USE_WAT */
/* Success */
return (0);
}
/*
* Erase a block of the screen
*
* The given parameters are "valid".
*/
static errr Term_wipe_ibm(int x, int y, int n)
{
#ifdef USE_CONIO
/* Wipe the region */
window(x + 1, y + 1, x + n, y + 1);
clrscr();
window(1, 1, cols, rows);
#else /* USE_CONIO */
/* Wipe part of the virtual (or physical) screen */
memcpy(VirtualScreen + ((cols*y + x) << 1), wiper, n << 1);
#endif /* USE_CONIO */
/* Success */
return (0);
}
/*
* Place some text on the screen using an attribute
*
* The given parameters are "valid". Be careful with "a".
*
* The string "cp" has length "n" and is NOT null-terminated.
*/
static errr Term_text_ibm(int x, int y, int n, byte a, const char *cp)
{
register int i;
register byte attr;
register byte *dest;
/* Handle "complex" color */
if (use_color_complex)
{
/* Extract a color index */
attr = (a & 0x0F);
}
/* Handle "simple" color */
else
{
/* Extract a color value */
attr = ibm_color_simple[a & 0x0F];
}
#ifdef USE_CONIO
/* Place the cursor */
gotoxy(x + 1, y + 1);
/* Set the attribute */
textattr(attr);
/* Dump the text */
for (i = 0; i < n; i++) putch(cp[i]);
#else /* USE_CONIO */
/* Access the virtual (or physical) screen */
dest = VirtualScreen + (((cols * y) + x) << 1);
/* Save the data */
for (i = 0; i < n; i++)
{
/* Apply */
*dest++ = cp[i];
*dest++ = attr;
}
#endif /* USE_CONIO */
/* Success */
return (0);
}
/*
* Place some attr/char pairs on the screen
*
* The given parameters are "valid".
*/
#ifdef USE_TRANSPARENCY
static errr Term_pict_ibm(int x, int y, int n, const byte *ap, const char *cp, const byte *tap, const char *tcp)
#else /* USE_TRANSPARENCY */
static errr Term_pict_ibm(int x, int y, int n, const byte *ap, const char *cp)
#endif /* USE_TRANSPARENCY */
{
register int i;
register byte attr;
register byte *dest;
#ifdef USE_CONIO
/* Place the cursor */
gotoxy(x + 1, y + 1);
/* Dump the text */
for (i = 0; i < n; i++)
{
/* Handle "complex" color */
if (use_color_complex)
{
/* Extract a color index */
attr = (ap[i] & 0x0F);
}
/* Handle "simple" color */
else
{
/* Extract a color value */
attr = ibm_color_simple[ap[i] & 0x0F];
}
/* Set the attribute */
textattr(attr);
/* Dump the char */
putch(cp[i]);
}
#else /* USE_CONIO */
/* Access the virtual (or physical) screen */
dest = VirtualScreen + (((cols * y) + x) << 1);
/* Save the data */
for (i = 0; i < n; i++)
{
/* Handle "complex" color */
if (use_color_complex)
{
/* Extract a color index */
attr = (ap[i] & 0x0F);
}
/* Handle "simple" color */
else
{
/* Extract a color value */
attr = ibm_color_simple[ap[i] & 0x0F];
}
/* Apply */
*dest++ = cp[i];
*dest++ = attr;
}
#endif /* USE_CONIO */
/* Success */
return (0);
}
/*
* Init a Term
*/
static void Term_init_ibm(term *t)
{
/* XXX Nothing */
}
/*
* Nuke a Term
*/
static void Term_nuke_ibm(term *t)
{
#ifdef USE_WAT
/* Nothing */
#else /* USE_WAT */
union REGS r;
#endif /* USE_WAT */
/* Move the cursor to the bottom of the screen */
Term_curs_ibm(0, rows - 1);
#ifdef USE_WAT
/* Restore the original video mode */
_setvideomode(_DEFAULTMODE);
#else /* USE_WAT */
/* Restore the original video mode */
r.h.ah = 0x00;
r.h.al = 0x03;
int86(0x10, &r, &r);
#endif /* USE_WAT */
/* Make the cursor visible */
curs_set(1);
}
#ifdef USE_GRAPHICS
#ifdef USE_286
/*
* In 286 mode we don't need to worry about translating from a 32bit
* pointer to a 16 bit pointer so we just call the interrupt function
*
* Note the use of "intr()" instead of "int86()" so we can pass
* segment registers.
*/
void enable_graphic_font(void *font)
{
union REGPACK regs =
{0};
regs.h.ah = 0x11; /* Text font function */
regs.h.bh = 0x10; /* Size of a character -- 16 bytes */
regs.h.cl = 0xFF; /* Last character in font */
regs.x.es = FP_SEG(font); /* Pointer to font */
regs.x.bp = FP_OFF(font);
intr(0x10, ®s);
}
#else /* USE_286 */
#ifdef USE_WAT
/*
* This structure is used by the DMPI function to hold registers when
* doing a real mode interrupt call. (Stolen from the DJGPP <dpmi.h>
* header file).
*/
typedef union
{
struct
{
unsigned long edi;
unsigned long esi;
unsigned long ebp;
unsigned long res;
unsigned long ebx;
unsigned long edx;
unsigned long ecx;
unsigned long eax;
}
d;
struct
{
unsigned short di, di_hi;
unsigned short si, si_hi;
unsigned short bp, bp_hi;
unsigned short res, res_hi;
unsigned short bx, bx_hi;
unsigned short dx, dx_hi;
unsigned short cx, cx_hi;
unsigned short ax, ax_hi;
unsigned short flags;
unsigned short es;
unsigned short ds;
unsigned short fs;
unsigned short gs;
unsigned short ip;
unsigned short cs;
unsigned short sp;
unsigned short ss;
}
x;
struct
{
unsigned char edi[4];
unsigned char esi[4];
unsigned char ebp[4];
unsigned char res[4];
unsigned char bl, bh, ebx_b2, ebx_b3;
unsigned char dl, dh, edx_b2, edx_b3;
unsigned char cl, ch, ecx_b2, ecx_b3;
unsigned char al, ah, eax_b2, eax_b3;
}
h;
} __dpmi_regs;
unsigned __dpmi_allocate_dos_memory(int size, unsigned *selector)
{
union REGPACK regs =
{0};
regs.w.ax = 0x100; /* DPMI function -- allocate low memory */
regs.w.bx = size; /* Number of Paragraphs to allocate */
intr(0x31, ®s); /* DPMI interface */
*selector = regs.w.dx;
return (regs.w.ax);
}
void __dpmi_free_dos_memory(unsigned sel)
{
union REGPACK regs =
{0};
regs.w.ax = 0x101; /* DPMI function -- free low memory */
regs.x.edx = sel; /* PM selector for memory block */
intr(0x31, ®s); /* DPMI interface */
}
void __dpmi_int(int intno, __dpmi_regs *dblock)
{
union REGPACK regs =
{0};
regs.w.ax = 0x300; /* DPMI function -- real mode interrupt */
regs.h.bl = intno; /* interrupt 0x10 */
regs.x.edi = FP_OFF(dblock); /* Pointer to dblock (offset and segment) */
regs.x.es = FP_SEG(dblock);
intr(0x31, ®s); /* DPMI interface */
}
unsigned short __dpmi_sel = 0x0000;
#define _farsetsel(x) __dpmi_sel=(x)
extern void _farnspokeb(unsigned long offset, unsigned char value);
#pragma aux _farnspokeb = \
"push fs" \
"mov fs,__dpmi_sel" \
"mov fs:[eax],bl" \
"pop fs" \
parm [eax] [bl];
#else /* USE_WAT */
#include <dpmi.h>
#include <go32.h>
#include <sys/farptr.h>
#endif /* USE_WAT */
/*
* Since you cannot send 32bit pointers to a 16bit interrupt handler
* and the video BIOS wants a (16bit) pointer to the font, we have
* to allocate a block of dos memory, copy the font into it, then
* translate a 32bit pointer into a 16bit pointer to that block.
*
* DPMI - Dos Protected Mode Interface provides functions that let
* us do that.
*/
void enable_graphic_font(const char *font)
{
__dpmi_regs dblock = {{0}};
unsigned seg, sel, i;
/*
* Allocate a block of memory 4096 bytes big in `low memory' so a real
* mode interrupt can access it. Real mode pointer is returned as seg:0
* Protected mode pointer is sel:0.
*/
seg = __dpmi_allocate_dos_memory(256, &sel);
/* Copy the information into low memory buffer, by copying one byte at
* a time. According to the info in <sys/farptr.h>, the functions
* _farsetsel() and _farnspokeb() will optimise away completely
*/
_farsetsel(sel); /* Set the selector to write to */
for (i = 0; i < 4096; i++)
{
_farnspokeb(i, *font++); /* Copy 1 byte into low (far) memory */
}
/*
* Now we use DPMI as a jumper to call the real mode interrupt. This
* is needed because loading `es' while in protected mode with a real
* mode pointer will cause an Protection Fault and calling the interrupt
* directly using the protected mode pointer will result in garbage
* being received by the interrupt routine
*/
dblock.d.eax = 0x1100; /* BIOS function -- set font */
dblock.d.ebx = 0x1000; /* bh = size of a letter; bl = 0 (reserved) */
dblock.d.ecx = 0x00FF; /* Last character in font */
dblock.x.es = seg; /* Pointer to font segment */
dblock.d.ebp = 0x0000; /* Pointer to font offset */
__dpmi_int(0x10, &dblock);
/* We're done with the low memory, free it */
__dpmi_free_dos_memory(sel);
}
#endif /* USE_286 */
#endif /* ALLOW_GRAPH */
#ifdef USE_DOSSOCK
void *zsock_connect(char *hos, short port)
{
struct hostent *host;
struct sockaddr_in sin;
int *client;
MAKE(client, int);
*client = socket(AF_INET, SOCK_STREAM, 0);
host = gethostbyname(hos);
memset(&sin, 0, sizeof sin);
sin.sin_family = AF_INET;
sin.sin_addr.s_addr = ((struct in_addr *)(host->h_addr))->s_addr;
sin.sin_port = htons(port);
if (connect(*client, (struct sockaddr*)&sin, sizeof sin) == -1)
{
/* could not connect to server */
return NULL;
}
return client;
}
bool zsock_can_read(void *client)
{
struct timeval t;
fd_set rd;
int *c = client;
FD_ZERO(&rd);
FD_SET(*c, &rd);
t.tv_sec = 0;
t.tv_usec = 0;
select(*c + 1, &rd, NULL, NULL, &t);
if (FD_ISSET(*c, &rd)) return TRUE;
else return (FALSE);
}
bool zsock_wait(void *client)
{
struct timeval t;
fd_set rd;
int *c = client;
t.tv_sec = 30;
t.tv_usec = 0;
FD_ZERO(&rd);
FD_SET(*c, &rd);
select(*c + 1, &rd, NULL, NULL, &t);
if (FD_ISSET(*c, &rd)) return TRUE;
else return (FALSE);
}
void zsock_disconnect(void *client)
{
close(*(int*)client);
FREE(client, int);
}
void zsock_send(void *sock, char *str)
{
send(*(int*)sock, str, strlen(str), 0);
}
void zsock_recv(void *sock, char *str, int len)
{
char c;
int l = 0;
while ((l < len) && zsock_can_read(sock))
{
if (!recv(*(int*)sock, &c, 1, 0))
{
irc_disconnect();
break;
}
if (c == '\r') continue;
if (c == '\n') break;
str[l++] = c;
}
str[l] = '\0';
}
#endif
/*
* Initialize the IBM "visual module"
*
* Hack -- we assume that "blank space" should be "white space"
* (and not "black space" which might make more sense).
*
* Note the use of "((x << 2) | (x >> 4))" to "expand" a 6 bit value
* into an 8 bit value, without losing much precision, by using the 2
* most significant bits as the least significant bits in the new value.
*/
errr init_ibm(void)
{
int i;
int mode;
term *t = &term_screen_body;
union REGS r;
/* Check for "Windows" */
if (getenv("windir"))
{
r.h.ah = 0x16; /* Windows API Call -- Set device focus */
r.h.al = 0x8B; /* Causes Dos boxes to become fullscreen */
r.h.bh = r.h.bl = 0x00; /* 0x0000 = current Dos box */
int86(0x2F, &r, &r); /* Call the Windows API */
}
/* Initialize "color_table" */
for (i = 0; i < 16; i++)
{
long rv, gv, bv;
/* Extract desired values */
rv = angband_color_table[i][1] >> 2;
gv = angband_color_table[i][2] >> 2;
bv = angband_color_table[i][3] >> 2;
/* Extract the "complex" codes */
ibm_color_complex[i] = ((rv) | (gv << 8) | (bv << 16));
/* Save the "simple" codes */
angband_color_table[i][0] = ibm_color_simple[i];
}
#ifdef USE_WAT
/* Set the video mode */
if (_setvideomode(_VRES16COLOR))
{
mode = 0x13;
}
/* Wimpy monitor */
else
{
mode = 0x03;
}
/* Force 25 line mode */
_setvideomode(_TEXTC80);
_settextrows(25);
#else /* USE_WAT */
/* Set video mode */
r.h.ah = 0x00;
r.h.al = 0x13; /* VGA only mode */
int86(0x10, &r, &r);
/* Get video mode */
r.h.ah = 0x0F;
int86(0x10, &r, &r);
mode = r.h.al;
/* Set video mode */
r.h.ah = 0x00;
r.h.al = 0x03; /* Color text mode */
int86(0x10, &r, &r);
#endif /* USE_WAT */
/* Check video mode */
if (mode == 0x13)
{
/* Remember the mode */
use_color_complex = TRUE;
/* Instantiate the color set */
activate_color_complex();
}
#ifdef USE_GRAPHICS
/* Try to activate bitmap graphics */
if (arg_graphics && use_color_complex)
{
FILE *f;
char buf[4096];
/* Build the filename */
path_build(buf, 1024, ANGBAND_DIR_XTRA, "angband.fnt");
/* Open the file */
f = fopen(buf, "rb");
/* Okay */
if (f)
{
/* Load the bitmap data */
if (fread(buf, 1, 4096, f) != 4096)
{
quit("Corrupt 'angband.fnt' file");
}
/* Close the file */
fclose(f);
/* Enable graphics */
enable_graphic_font(buf);
/* Enable colors (again) */
activate_color_complex();
/* Use graphics */
use_graphics = TRUE;
}
}
#endif
#ifdef USE_CONIO
#else /* USE_CONIO */
/* Build a "wiper line" */
for (i = 0; i < 80; i++)
{
/* Space */
wiper[2*i] = ' ';
/* Black */
wiper[2*i + 1] = TERM_WHITE;
}
#endif /* USE_CONIO */
#ifdef USE_VIRTUAL
/* Make the virtual screen */
C_MAKE(VirtualScreen, rows * cols * 2, byte);
#endif /* USE_VIRTUAL */
/* Erase the screen */
Term_xtra_ibm(TERM_XTRA_CLEAR, 0);
/* Place the cursor */
Term_curs_ibm(0, 0);
/* Access the "default" cursor info */
r.h.ah = 3;
r.h.bh = 0;
/* Make the call */
int86(0x10, &r, &r);
/* Extract the standard cursor info */
saved_cur_v = 1;
saved_cur_high = r.h.ch;
saved_cur_low = r.h.cl;
/* Initialize the term */
term_init(t, 80, 24, 256);
#ifdef USE_CONIO
#else /* USE_CONIO */
/* Always use "Term_pict()" */
t->always_pict = TRUE;
#endif /* USE_CONIO */
/* Use "white space" to erase */
t->attr_blank = TERM_WHITE;
t->char_blank = ' ';
/* Prepare the init/nuke hooks */
t->init_hook = Term_init_ibm;
t->nuke_hook = Term_nuke_ibm;
/* Connect the hooks */
t->xtra_hook = Term_xtra_ibm;
t->curs_hook = Term_curs_ibm;
t->wipe_hook = Term_wipe_ibm;
t->text_hook = Term_text_ibm;
t->pict_hook = Term_pict_ibm;
/* Save it */
term_screen = t;
/* Activate it */
Term_activate(term_screen);
/* Success */
return 0;
}
#endif /* USE_IBM */
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