/* File: main-gcu.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. */ /* * This file helps Angband run on Unix/Curses machines. * * * To use this file, you must define "USE_GCU" in the Makefile. * * * Hack -- note that "angband.h" is included AFTER the #ifdef test. * This was necessary because of annoying "curses.h" silliness. * * Note that this file is not "intended" to support non-Unix machines, * nor is it intended to support VMS or other bizarre setups. * * Also, this package assumes that the underlying "curses" handles both * the "nonl()" and "cbreak()" commands correctly, see the "OPTION" below. * * This code should work with most versions of "curses" or "ncurses", * and the "main-ncu.c" file (and USE_NCU define) are no longer used. * * See also "USE_CAP" and "main-cap.c" for code that bypasses "curses" * and uses the "termcap" information directly, or even bypasses the * "termcap" information and sends direct vt100 escape sequences. * * This file provides only a single "term" window. XXX XXX XXX * * But in theory, it should be possible to allow a 50 line screen to be * split into two (or more) sub-screens. * * The "init" and "nuke" hooks are built so that only the first init and * the last nuke actually do anything, but the other functions are not * "correct" for multiple windows. Minor changes would also be needed * to allow the system to handle the "locations" of the various windows. * * Consider the use of "savetty()" and "resetty()". XXX XXX XXX */ #include "angband.h" #ifdef USE_GCU /* * Hack -- play games with "bool" */ #undef bool /* * Include the proper "header" file */ #ifdef USE_NCURSES # include #else # include #endif /* * Hack -- try to guess which systems use what commands * Hack -- allow one of the "USE_Txxxxx" flags to be pre-set. * Mega-Hack -- try to guess when "POSIX" is available. * If the user defines two of these, we will probably crash. */ #if !defined(USE_TPOSIX) # if !defined(USE_TERMIO) && !defined(USE_TCHARS) # if defined(_POSIX_VERSION) # define USE_TPOSIX # else # if defined(USG) || defined(linux) || defined(SOLARIS) # define USE_TERMIO # else # define USE_TCHARS # endif # endif # endif #endif /* * Hack -- Amiga uses "fake curses" and cannot do any of this stuff */ #if defined(AMIGA) # undef USE_TPOSIX # undef USE_TERMIO # undef USE_TCHARS #endif /* * POSIX stuff */ #ifdef USE_TPOSIX # include # include #endif /* * One version needs this file */ #ifdef USE_TERMIO # include # include #endif /* * The other needs this file */ #ifdef USE_TCHARS # include # include # include # include # include #endif /* * XXX XXX Hack -- POSIX uses "O_NONBLOCK" instead of "O_NDELAY" * * They should both work due to the "(i != 1)" test below. */ #ifndef O_NDELAY # define O_NDELAY O_NONBLOCK #endif /* * OPTION: some machines lack "cbreak()" * On these machines, we use an older definition */ /* #define cbreak() crmode() */ /* * OPTION: some machines cannot handle "nonl()" and "nl()" * On these machines, we can simply ignore those commands. */ /* #define nonl() */ /* #define nl() */ /* * Save the "normal" and "angband" terminal settings */ #ifdef USE_TPOSIX static struct termios norm_termios; static struct termios game_termios; #endif #ifdef USE_TERMIO static struct termio norm_termio; static struct termio game_termio; #endif #ifdef USE_TCHARS static struct ltchars norm_special_chars; static struct sgttyb norm_ttyb; static struct tchars norm_tchars; static int norm_local_chars; static struct ltchars game_special_chars; static struct sgttyb game_ttyb; static struct tchars game_tchars; static int game_local_chars; #endif /* * Hack -- Number of initialized "term" structures */ static int active = 0; /* * The main screen information */ static term term_screen_body; #ifdef A_COLOR /* * Hack -- define "A_BRIGHT" to be "A_BOLD", because on many * machines, "A_BRIGHT" produces ugly "inverse" video. */ #ifndef A_BRIGHT # define A_BRIGHT A_BOLD #endif /* * Software flag -- we are allowed to use color */ static int can_use_color = FALSE; /* * Software flag -- we are allowed to change the colors */ static int can_fix_color = FALSE; /* * Simple Angband to Curses color conversion table */ static int colortable[16]; #endif /* * Place the "keymap" into its "normal" state */ static void keymap_norm(void) { #ifdef USE_TPOSIX /* restore the saved values of the special chars */ (void)tcsetattr(0, TCSAFLUSH, &norm_termios); #endif #ifdef USE_TERMIO /* restore the saved values of the special chars */ (void)ioctl(0, TCSETA, (char *)&norm_termio); #endif #ifdef USE_TCHARS /* restore the saved values of the special chars */ (void)ioctl(0, TIOCSLTC, (char *)&norm_special_chars); (void)ioctl(0, TIOCSETP, (char *)&norm_ttyb); (void)ioctl(0, TIOCSETC, (char *)&norm_tchars); (void)ioctl(0, TIOCLSET, (char *)&norm_local_chars); #endif } /* * Place the "keymap" into the "game" state */ static void keymap_game(void) { #ifdef USE_TPOSIX /* restore the saved values of the special chars */ (void)tcsetattr(0, TCSAFLUSH, &game_termios); #endif #ifdef USE_TERMIO /* restore the saved values of the special chars */ (void)ioctl(0, TCSETA, (char *)&game_termio); #endif #ifdef USE_TCHARS /* restore the saved values of the special chars */ (void)ioctl(0, TIOCSLTC, (char *)&game_special_chars); (void)ioctl(0, TIOCSETP, (char *)&game_ttyb); (void)ioctl(0, TIOCSETC, (char *)&game_tchars); (void)ioctl(0, TIOCLSET, (char *)&game_local_chars); #endif } /* * Save the normal keymap */ static void keymap_norm_prepare(void) { #ifdef USE_TPOSIX /* Get the normal keymap */ tcgetattr(0, &norm_termios); #endif #ifdef USE_TERMIO /* Get the normal keymap */ (void)ioctl(0, TCGETA, (char *)&norm_termio); #endif #ifdef USE_TCHARS /* Get the normal keymap */ (void)ioctl(0, TIOCGETP, (char *)&norm_ttyb); (void)ioctl(0, TIOCGLTC, (char *)&norm_special_chars); (void)ioctl(0, TIOCGETC, (char *)&norm_tchars); (void)ioctl(0, TIOCLGET, (char *)&norm_local_chars); #endif } /* * Save the keymaps (normal and game) */ static void keymap_game_prepare(void) { #ifdef USE_TPOSIX /* Acquire the current mapping */ tcgetattr(0, &game_termios); /* Force "Ctrl-C" to interupt */ game_termios.c_cc[VINTR] = (char)3; /* Force "Ctrl-Z" to suspend */ game_termios.c_cc[VSUSP] = (char)26; /* Hack -- Leave "VSTART/VSTOP" alone */ /* Disable the standard control characters */ game_termios.c_cc[VQUIT] = (char)-1; game_termios.c_cc[VERASE] = (char)-1; game_termios.c_cc[VKILL] = (char)-1; game_termios.c_cc[VEOF] = (char)-1; game_termios.c_cc[VEOL] = (char)-1; /* Normally, block until a character is read */ game_termios.c_cc[VMIN] = 1; game_termios.c_cc[VTIME] = 0; #endif #ifdef USE_TERMIO /* Acquire the current mapping */ (void)ioctl(0, TCGETA, (char *)&game_termio); /* Force "Ctrl-C" to interupt */ game_termio.c_cc[VINTR] = (char)3; /* Force "Ctrl-Z" to suspend */ game_termio.c_cc[VSUSP] = (char)26; /* Hack -- Leave "VSTART/VSTOP" alone */ /* Disable the standard control characters */ game_termio.c_cc[VQUIT] = (char)-1; game_termio.c_cc[VERASE] = (char)-1; game_termio.c_cc[VKILL] = (char)-1; game_termio.c_cc[VEOF] = (char)-1; game_termio.c_cc[VEOL] = (char)-1; #if 0 /* Disable the non-posix control characters */ game_termio.c_cc[VEOL2] = (char)-1; game_termio.c_cc[VSWTCH] = (char)-1; game_termio.c_cc[VDSUSP] = (char)-1; game_termio.c_cc[VREPRINT] = (char)-1; game_termio.c_cc[VDISCARD] = (char)-1; game_termio.c_cc[VWERASE] = (char)-1; game_termio.c_cc[VLNEXT] = (char)-1; game_termio.c_cc[VSTATUS] = (char)-1; #endif /* Normally, block until a character is read */ game_termio.c_cc[VMIN] = 1; game_termio.c_cc[VTIME] = 0; #endif #ifdef USE_TCHARS /* Get the default game characters */ (void)ioctl(0, TIOCGETP, (char *)&game_ttyb); (void)ioctl(0, TIOCGLTC, (char *)&game_special_chars); (void)ioctl(0, TIOCGETC, (char *)&game_tchars); (void)ioctl(0, TIOCLGET, (char *)&game_local_chars); /* Force suspend (^Z) */ game_special_chars.t_suspc = (char)26; /* Cancel some things */ game_special_chars.t_dsuspc = (char)-1; game_special_chars.t_rprntc = (char)-1; game_special_chars.t_flushc = (char)-1; game_special_chars.t_werasc = (char)-1; game_special_chars.t_lnextc = (char)-1; /* Force interupt (^C) */ game_tchars.t_intrc = (char)3; /* Force start/stop (^Q, ^S) */ game_tchars.t_startc = (char)17; game_tchars.t_stopc = (char)19; /* Cancel some things */ game_tchars.t_quitc = (char)-1; game_tchars.t_eofc = (char)-1; game_tchars.t_brkc = (char)-1; #endif } /* * Suspend/Resume */ static errr Term_xtra_gcu_alive(int v) { /* Suspend */ if (!v) { /* Go to normal keymap mode */ keymap_norm(); /* Restore modes */ nocbreak(); echo(); nl(); /* Hack -- make sure the cursor is visible */ Term_xtra(TERM_XTRA_SHAPE, 1); /* Flush the curses buffer */ (void)refresh(); #ifdef SPECIAL_BSD /* this moves curses to bottom right corner */ mvcur(curscr->cury, curscr->curx, LINES - 1, 0); #else /* this moves curses to bottom right corner */ mvcur(curscr->_cury, curscr->_curx, LINES - 1, 0); #endif /* Exit curses */ endwin(); /* Flush the output */ (void)fflush(stdout); } /* Resume */ else { /* Refresh */ /* (void)touchwin(curscr); */ /* (void)wrefresh(curscr); */ /* Restore the settings */ cbreak(); noecho(); nonl(); /* Go to angband keymap mode */ keymap_game(); } /* Success */ return (0); } /* * Init the "curses" system */ static void Term_init_gcu(term *t) { /* Count init's, handle first */ if (active++ != 0) return; /* Erase the screen */ (void)clear(); /* Reset the cursor */ (void)move(0, 0); /* Flush changes */ (void)refresh(); /* Game keymap */ keymap_game(); } /* * Nuke the "curses" system */ static void Term_nuke_gcu(term *t) { /* Count nuke's, handle last */ if (--active != 0) return; /* Hack -- make sure the cursor is visible */ Term_xtra(TERM_XTRA_SHAPE, 1); #ifdef SPECIAL_BSD /* This moves curses to bottom right corner */ mvcur(curscr->cury, curscr->curx, LINES - 1, 0); #else /* This moves curses to bottom right corner */ mvcur(curscr->_cury, curscr->_curx, LINES - 1, 0); #endif /* Flush the curses buffer */ (void)refresh(); /* Exit curses */ endwin(); /* Flush the output */ (void)fflush(stdout); /* Normal keymap */ keymap_norm(); } #ifdef USE_GETCH /* * Process events, with optional wait */ static errr Term_xtra_gcu_event(int v) { int i, k; /* Wait */ if (v) { /* Paranoia -- Wait for it */ nodelay(stdscr, FALSE); /* Get a keypress */ i = getch(); /* Mega-Hack -- allow graceful "suspend" */ for (k = 0; (k < 10) && (i == ERR); k++) i = getch(); /* Broken input is special */ if (i == ERR) exit_game_panic(); if (i == EOF) exit_game_panic(); } /* Do not wait */ else { /* Do not wait for it */ nodelay(stdscr, TRUE); /* Check for keypresses */ i = getch(); /* Wait for it next time */ nodelay(stdscr, FALSE); /* None ready */ if (i == ERR) return (1); if (i == EOF) return (1); } /* Enqueue the keypress */ Term_keypress(i); /* Success */ return (0); } #else /* USE_GETCH */ /* * Process events (with optional wait) */ static errr Term_xtra_gcu_event(int v) { int i, k; char buf[2]; /* Wait */ if (v) { /* Wait for one byte */ i = read(0, buf, 1); /* Hack -- Handle bizarre "errors" */ if ((i <= 0) && (errno != EINTR)) exit_game_panic(); } /* Do not wait */ else { /* Get the current flags for stdin */ k = fcntl(0, F_GETFL, 0); /* Oops */ if (k < 0) return (1); /* Tell stdin not to block */ if (fcntl(0, F_SETFL, k | O_NDELAY) < 0) return (1); /* Read one byte, if possible */ i = read(0, buf, 1); /* Replace the flags for stdin */ if (fcntl(0, F_SETFL, k)) return (1); } /* Ignore "invalid" keys */ if ((i != 1) || (!buf[0])) return (1); /* Enqueue the keypress */ Term_keypress(buf[0]); /* Success */ return (0); } #endif /* USE_GETCH */ /* * Handle a "special request" */ static errr Term_xtra_gcu(int n, int v) { /* Analyze the request */ switch (n) { /* Clear screen */ case TERM_XTRA_CLEAR: touchwin(stdscr); (void)clear(); return (0); /* Make a noise */ case TERM_XTRA_NOISE: (void)write(1, "\007", 1); return (0); /* Flush the Curses buffer */ case TERM_XTRA_FRESH: (void)refresh(); return (0); #ifdef USE_CURS_SET /* Change the cursor visibility */ case TERM_XTRA_SHAPE: curs_set(v); return (0); #endif /* Suspend/Resume curses */ case TERM_XTRA_ALIVE: return (Term_xtra_gcu_alive(v)); /* Process events */ case TERM_XTRA_EVENT: return (Term_xtra_gcu_event(v)); /* Flush events */ case TERM_XTRA_FLUSH: while (!Term_xtra_gcu_event(FALSE)); return (0); /* Delay */ case TERM_XTRA_DELAY: usleep(1000 * v); return (0); } /* Unknown */ return (1); } /* * Actually MOVE the hardware cursor */ static errr Term_curs_gcu(int x, int y) { /* Literally move the cursor */ move(y, x); /* Success */ return (0); } /* * Erase a grid of space * Hack -- try to be "semi-efficient". */ static errr Term_wipe_gcu(int x, int y, int n) { /* Place cursor */ move(y, x); /* Clear to end of line */ if (x + n >= 80) { clrtoeol(); } /* Clear some characters */ else { while (n-- > 0) addch(' '); } /* Success */ return (0); } /* * Place some text on the screen using an attribute */ static errr Term_text_gcu(int x, int y, int n, byte a, cptr s) { int i; char text[81]; /* Obtain a copy of the text */ for (i = 0; i < n; i++) text[i] = s[i]; text[n] = 0; /* Move the cursor and dump the string */ move(y, x); #ifdef A_COLOR /* Set the color */ if (can_use_color) attrset(colortable[a & 0x0F]); #endif /* Add the text */ addstr(text); /* Success */ return (0); } /* * Prepare "curses" for use by the file "term.c" * * Installs the "hook" functions defined above, and then activates * the main screen "term", which clears the screen and such things. * * Someone should really check the semantics of "initscr()" */ errr init_gcu(int argc, char *argv[]) { int i; term *t = &term_screen_body; /* Extract the normal keymap */ keymap_norm_prepare(); #if defined(USG) /* Initialize for USG Unix */ if (initscr() == NULL) return (-1); #else /* Initialize for others systems */ if (initscr() == (WINDOW*)ERR) return (-1); #endif /* Hack -- Require large screen, or Quit with message */ i = ((LINES < 24) || (COLS < 80)); if (i) quit("Angband needs an 80x24 'curses' screen"); #ifdef A_COLOR /*** Init the Color-pairs and set up a translation table ***/ /* Do we have color, and enough color, available? */ can_use_color = ((start_color() != ERR) && has_colors() && (COLORS >= 8) && (COLOR_PAIRS >= 8)); #ifdef REDEFINE_COLORS /* Can we change colors? */ can_fix_color = (can_use_color && can_change_color() && (COLOR_PAIRS >= 16)); #endif /* Attempt to use customized colors */ if (can_fix_color) { /* Prepare the color pairs */ for (i = 0; i < 16; i++) { /* Reset the color */ init_pair(i, i, i); /* Reset the color data */ colortable[i] = (COLOR_PAIR(i) | A_NORMAL); } /* XXX XXX XXX Take account of "gamma correction" */ /* Prepare the "Angband Colors" */ init_color(0, 0, 0, 0); /* Black */ init_color(1, 1000, 1000, 1000); /* White */ init_color(2, 500, 500, 500); /* Grey */ init_color(3, 1000, 500, 0); /* Orange */ init_color(4, 750, 0, 0); /* Red */ init_color(5, 0, 500, 250); /* Green */ init_color(6, 0, 0, 1000); /* Blue */ init_color(7, 500, 250, 0); /* Brown */ init_color(8, 250, 250, 250); /* Dark-grey */ init_color(9, 750, 750, 750); /* Light-grey */ init_color(10, 1000, 0, 1000); /* Purple */ init_color(11, 1000, 1000, 0); /* Yellow */ init_color(12, 1000, 0, 0); /* Light Red */ init_color(13, 0, 1000, 0); /* Light Green */ init_color(14, 0, 1000, 1000); /* Light Blue */ init_color(15, 750, 500, 250); /* Light Brown */ } /* Attempt to use colors */ else if (can_use_color) { /* Color-pair 0 is *always* WHITE on BLACK */ /* Prepare the color pairs */ init_pair(1, COLOR_RED, COLOR_BLACK); init_pair(2, COLOR_GREEN, COLOR_BLACK); init_pair(3, COLOR_YELLOW, COLOR_BLACK); init_pair(4, COLOR_BLUE, COLOR_BLACK); init_pair(5, COLOR_MAGENTA, COLOR_BLACK); init_pair(6, COLOR_CYAN, COLOR_BLACK); init_pair(7, COLOR_BLACK, COLOR_BLACK); /* Prepare the "Angband Colors" -- Bright white is too bright */ colortable[0] = (COLOR_PAIR(7) | A_NORMAL); /* Black */ colortable[1] = (COLOR_PAIR(0) | A_NORMAL); /* White */ colortable[2] = (COLOR_PAIR(6) | A_NORMAL); /* Grey XXX */ colortable[3] = (COLOR_PAIR(1) | A_BRIGHT); /* Orange XXX */ colortable[4] = (COLOR_PAIR(1) | A_NORMAL); /* Red */ colortable[5] = (COLOR_PAIR(2) | A_NORMAL); /* Green */ colortable[6] = (COLOR_PAIR(4) | A_NORMAL); /* Blue */ colortable[7] = (COLOR_PAIR(3) | A_NORMAL); /* Umber */ colortable[8] = (COLOR_PAIR(7) | A_BRIGHT); /* Dark-grey XXX */ colortable[9] = (COLOR_PAIR(6) | A_BRIGHT); /* Light-grey XXX */ colortable[10] = (COLOR_PAIR(5) | A_NORMAL); /* Purple */ colortable[11] = (COLOR_PAIR(3) | A_BRIGHT); /* Yellow */ colortable[12] = (COLOR_PAIR(5) | A_BRIGHT); /* Light Red XXX */ colortable[13] = (COLOR_PAIR(2) | A_BRIGHT); /* Light Green */ colortable[14] = (COLOR_PAIR(4) | A_BRIGHT); /* Light Blue */ colortable[15] = (COLOR_PAIR(3) | A_NORMAL); /* Light Umber XXX */ } #endif /*** Low level preparation ***/ #ifdef USE_GETCH /* Paranoia -- Assume no waiting */ nodelay(stdscr, FALSE); #endif /* Prepare */ cbreak(); noecho(); nonl(); /* Extract the game keymap */ keymap_game_prepare(); /*** Now prepare the term ***/ /* Initialize the term */ term_init(t, 80, 24, 256); /* Avoid the bottom right corner */ t->icky_corner = TRUE; /* Erase with "white space" */ t->attr_blank = TERM_WHITE; t->char_blank = ' '; /* Set some hooks */ t->init_hook = Term_init_gcu; t->nuke_hook = Term_nuke_gcu; /* Set some more hooks */ t->text_hook = Term_text_gcu; t->wipe_hook = Term_wipe_gcu; t->curs_hook = Term_curs_gcu; t->xtra_hook = Term_xtra_gcu; /* Save the term */ term_screen = t; /* Activate it */ Term_activate(term_screen); /* Success */ return (0); } #endif /* USE_GCU */