mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-24 11:29:10 +00:00
438 lines
9.3 KiB
C
438 lines
9.3 KiB
C
/*
|
||
* io.c - input/output routines for Phantasia
|
||
*/
|
||
|
||
#include <string.h>
|
||
#include "include.h"
|
||
|
||
/************************************************************************
|
||
/
|
||
/ FUNCTION NAME: getstring()
|
||
/
|
||
/ FUNCTION: read a string from operator
|
||
/
|
||
/ AUTHOR: E. A. Estes, 12/4/85
|
||
/
|
||
/ ARGUMENTS:
|
||
/ char *cp - pointer to buffer area to fill
|
||
/ int mx - maximum number of characters to put in buffer
|
||
/
|
||
/ RETURN VALUE: none
|
||
/
|
||
/ MODULES CALLED: wmove(), _filbuf(), clearok(), waddstr(), wrefresh(),
|
||
/ wclrtoeol()
|
||
/
|
||
/ GLOBAL INPUTS: Echo, _iob[], Wizard, *stdscr
|
||
/
|
||
/ GLOBAL OUTPUTS: _iob[]
|
||
/
|
||
/ DESCRIPTION:
|
||
/ Read a string from the keyboard.
|
||
/ This routine is specially designed to:
|
||
/
|
||
/ - strip non-printing characters (unless Wizard)
|
||
/ - echo, if desired
|
||
/ - redraw the screen if CH_REDRAW is entered
|
||
/ - read in only 'mx - 1' characters or less characters
|
||
/ - nul-terminate string, and throw away newline
|
||
/
|
||
/ 'mx' is assumed to be at least 2.
|
||
/
|
||
*************************************************************************/
|
||
|
||
getstring(cp, mx)
|
||
register char *cp;
|
||
register int mx;
|
||
{
|
||
register char *inptr; /* pointer into string for next string */
|
||
int x, y; /* original x, y coordinates on screen */
|
||
int ch; /* input */
|
||
|
||
getyx(stdscr, y, x); /* get coordinates on screen */
|
||
inptr = cp;
|
||
*inptr = '\0'; /* clear string to start */
|
||
--mx; /* reserve room in string for nul terminator */
|
||
|
||
do
|
||
/* get characters and process */
|
||
{
|
||
if (Echo)
|
||
mvaddstr(y, x, cp); /* print string on screen */
|
||
clrtoeol(); /* clear any data after string */
|
||
refresh(); /* update screen */
|
||
|
||
ch = getchar(); /* get character */
|
||
|
||
switch (ch)
|
||
{
|
||
case CH_ERASE: /* back up one character */
|
||
if (inptr > cp)
|
||
--inptr;
|
||
break;
|
||
|
||
case CH_KILL: /* back up to original location */
|
||
inptr = cp;
|
||
break;
|
||
|
||
case CH_NEWLINE: /* terminate string */
|
||
break;
|
||
|
||
case CH_REDRAW: /* redraw screen */
|
||
clearok(stdscr, TRUE);
|
||
continue;
|
||
|
||
default: /* put data in string */
|
||
if (ch >= ' ' || Wizard)
|
||
/* printing char; put in string */
|
||
*inptr++ = ch;
|
||
}
|
||
|
||
*inptr = '\0'; /* terminate string */
|
||
}
|
||
while (ch != CH_NEWLINE && inptr < cp + mx);
|
||
}
|
||
/* */
|
||
/************************************************************************
|
||
/
|
||
/ FUNCTION NAME: more()
|
||
/
|
||
/ FUNCTION: pause and prompt player
|
||
/
|
||
/ AUTHOR: E. A. Estes, 12/4/85
|
||
/
|
||
/ ARGUMENTS:
|
||
/ int where - line on screen on which to pause
|
||
/
|
||
/ RETURN VALUE: none
|
||
/
|
||
/ MODULES CALLED: wmove(), waddstr(), getanswer()
|
||
/
|
||
/ GLOBAL INPUTS: *stdscr
|
||
/
|
||
/ GLOBAL OUTPUTS: none
|
||
/
|
||
/ DESCRIPTION:
|
||
/ Print a message, and wait for a space character.
|
||
/
|
||
*************************************************************************/
|
||
|
||
more(where)
|
||
int where;
|
||
{
|
||
mvaddstr(where, 0, "-- more --");
|
||
getanswer(" ", FALSE);
|
||
}
|
||
/* */
|
||
/************************************************************************
|
||
/
|
||
/ FUNCTION NAME: infloat()
|
||
/
|
||
/ FUNCTION: input a floating point number from operator
|
||
/
|
||
/ AUTHOR: E. A. Estes, 12/4/85
|
||
/
|
||
/ ARGUMENTS: none
|
||
/
|
||
/ RETURN VALUE: floating point number from operator
|
||
/
|
||
/ MODULES CALLED: sscanf(), getstring()
|
||
/
|
||
/ GLOBAL INPUTS: Databuf[]
|
||
/
|
||
/ GLOBAL OUTPUTS: none
|
||
/
|
||
/ DESCRIPTION:
|
||
/ Read a string from player, and scan for a floating point
|
||
/ number.
|
||
/ If no valid number is found, return 0.0.
|
||
/
|
||
*************************************************************************/
|
||
|
||
double
|
||
infloat()
|
||
{
|
||
double result; /* return value */
|
||
|
||
getstring(Databuf, SZ_DATABUF);
|
||
if (sscanf(Databuf, "%lf", &result) < 1)
|
||
/* no valid number entered */
|
||
result = 0.0;
|
||
|
||
return(result);
|
||
}
|
||
/* */
|
||
/************************************************************************
|
||
/
|
||
/ FUNCTION NAME: inputoption()
|
||
/
|
||
/ FUNCTION: input an option value from player
|
||
/
|
||
/ AUTHOR: E. A. Estes, 12/4/85
|
||
/
|
||
/ ARGUMENTS: none
|
||
/
|
||
/ RETURN VALUE: none
|
||
/
|
||
/ MODULES CALLED: floor(), drandom(), getanswer()
|
||
/
|
||
/ GLOBAL INPUTS: Player
|
||
/
|
||
/ GLOBAL OUTPUTS: Player
|
||
/
|
||
/ DESCRIPTION:
|
||
/ Age increases with every move.
|
||
/ Refresh screen, and get a single character option from player.
|
||
/ Return a random value if player's ring has gone bad.
|
||
/
|
||
*************************************************************************/
|
||
|
||
inputoption()
|
||
{
|
||
++Player.p_age; /* increase age */
|
||
|
||
if (Player.p_ring.ring_type != R_SPOILED)
|
||
/* ring ok */
|
||
return(getanswer("T ", TRUE));
|
||
else
|
||
/* bad ring */
|
||
{
|
||
getanswer(" ", TRUE);
|
||
return((int) ROLL(0.0, 5.0) + '0');
|
||
}
|
||
}
|
||
/* */
|
||
/************************************************************************
|
||
/
|
||
/ FUNCTION NAME: interrupt()
|
||
/
|
||
/ FUNCTION: handle interrupt from operator
|
||
/
|
||
/ AUTHOR: E. A. Estes, 12/4/85
|
||
/
|
||
/ ARGUMENTS: none
|
||
/
|
||
/ RETURN VALUE: none
|
||
/
|
||
/ MODULES CALLED: fork(), exit(), wait(), death(), alarm(), execl(), wmove(),
|
||
/ getgid(), signal(), getenv(), wclear(), setuid(), getuid(), setgid(),
|
||
/ crmode(), clearok(), waddstr(), cleanup(), wrefresh(), leavegame(),
|
||
/ getanswer()
|
||
/
|
||
/ GLOBAL INPUTS: Player, *stdscr
|
||
/
|
||
/ GLOBAL OUTPUTS: none
|
||
/
|
||
/ DESCRIPTION:
|
||
/ Allow player to quit upon hitting the interrupt key.
|
||
/ If the player wants to quit while in battle, he/she automatically
|
||
/ dies.
|
||
/
|
||
*************************************************************************/
|
||
|
||
interrupt()
|
||
{
|
||
char line[81]; /* a place to store data already on screen */
|
||
register int loop; /* counter */
|
||
int x, y; /* coordinates on screen */
|
||
int ch; /* input */
|
||
unsigned savealarm; /* to save alarm value */
|
||
|
||
#ifdef SYS3
|
||
signal(SIGINT, SIG_IGN);
|
||
#endif
|
||
#ifdef SYS5
|
||
signal(SIGINT, SIG_IGN);
|
||
#endif
|
||
|
||
savealarm = alarm(0); /* turn off any alarms */
|
||
|
||
getyx(stdscr, y, x); /* save cursor location */
|
||
|
||
for (loop = 0; loop < 80; ++loop) /* save line on screen */
|
||
{
|
||
move(4, loop);
|
||
line[loop] = inch();
|
||
}
|
||
line[80] = '\0'; /* nul terminate */
|
||
|
||
if (Player.p_status == S_INBATTLE || Player.p_status == S_MONSTER)
|
||
/* in midst of fighting */
|
||
{
|
||
mvaddstr(4, 0, "Quitting now will automatically kill your character. Still want to ? ");
|
||
ch = getanswer("NY", FALSE);
|
||
if (ch == 'Y')
|
||
death("Bailing out");
|
||
/*NOTREACHED*/
|
||
}
|
||
else
|
||
{
|
||
mvaddstr(4, 0, "Do you really want to quit ? ");
|
||
ch = getanswer("NY", FALSE);
|
||
if (ch == 'Y')
|
||
leavegame();
|
||
/*NOTREACHED*/
|
||
}
|
||
|
||
mvaddstr(4, 0, line); /* restore data on screen */
|
||
move(y, x); /* restore cursor */
|
||
refresh();
|
||
|
||
#ifdef SYS3
|
||
signal(SIGINT, interrupt);
|
||
#endif
|
||
#ifdef SYS5
|
||
signal(SIGINT, interrupt);
|
||
#endif
|
||
|
||
alarm(savealarm); /* restore alarm */
|
||
}
|
||
/* */
|
||
/************************************************************************
|
||
/
|
||
/ FUNCTION NAME: getanswer()
|
||
/
|
||
/ FUNCTION: get an answer from operator
|
||
/
|
||
/ AUTHOR: E. A. Estes, 12/4/85
|
||
/
|
||
/ ARGUMENTS:
|
||
/ char *choices - string of (upper case) valid choices
|
||
/ bool def - set if default answer
|
||
/
|
||
/ RETURN VALUE: none
|
||
/
|
||
/ MODULES CALLED: alarm(), wmove(), waddch(), signal(), setjmp(), strchr(),
|
||
/ _filbuf(), clearok(), toupper(), wrefresh(), mvprintw(), wclrtoeol()
|
||
/
|
||
/ GLOBAL INPUTS: catchalarm(), Echo, _iob[], _ctype[], *stdscr, Timeout,
|
||
/ Timeoenv[]
|
||
/
|
||
/ GLOBAL OUTPUTS: _iob[]
|
||
/
|
||
/ DESCRIPTION:
|
||
/ Get a single character answer from operator.
|
||
/ Timeout waiting for response. If we timeout, or the
|
||
/ answer in not in the list of valid choices, print choices,
|
||
/ and wait again, otherwise return the first character in ths
|
||
/ list of choices.
|
||
/ Give up after 3 tries.
|
||
/
|
||
*************************************************************************/
|
||
|
||
getanswer(choices, def)
|
||
char *choices;
|
||
bool def;
|
||
{
|
||
int ch; /* input */
|
||
int loop; /* counter */
|
||
int oldx, oldy; /* original coordinates on screen */
|
||
|
||
getyx(stdscr, oldy, oldx);
|
||
alarm(0); /* make sure alarm is off */
|
||
|
||
for (loop = 3; loop; --loop)
|
||
/* try for 3 times */
|
||
{
|
||
if (setjmp(Timeoenv) != 0)
|
||
/* timed out waiting for response */
|
||
{
|
||
if (def || loop <= 1)
|
||
/* return default answer */
|
||
break;
|
||
else
|
||
/* prompt, and try again */
|
||
goto YELL;
|
||
}
|
||
else
|
||
/* wait for response */
|
||
{
|
||
clrtoeol();
|
||
refresh();
|
||
#ifdef BSD41
|
||
sigset(SIGALRM, catchalarm);
|
||
#else
|
||
signal(SIGALRM, catchalarm);
|
||
#endif
|
||
/* set timeout */
|
||
if (Timeout)
|
||
alarm(7); /* short */
|
||
else
|
||
alarm(600); /* long */
|
||
|
||
ch = getchar();
|
||
|
||
alarm(0); /* turn off timeout */
|
||
|
||
if (ch < 0)
|
||
/* caught some signal */
|
||
{
|
||
++loop;
|
||
continue;
|
||
}
|
||
else if (ch == CH_REDRAW)
|
||
/* redraw screen */
|
||
{
|
||
clearok(stdscr, TRUE); /* force clear screen */
|
||
++loop; /* don't count this input */
|
||
continue;
|
||
}
|
||
else if (Echo)
|
||
{
|
||
addch(ch); /* echo character */
|
||
refresh();
|
||
}
|
||
|
||
if (islower(ch))
|
||
/* convert to upper case */
|
||
ch = toupper(ch);
|
||
|
||
if (def || strchr(choices, ch) != NULL)
|
||
/* valid choice */
|
||
return(ch);
|
||
else if (!def && loop > 1)
|
||
/* bad choice; prompt, and try again */
|
||
{
|
||
YELL: mvprintw(oldy + 1, 0, "Please choose one of : [%s]\n", choices);
|
||
move(oldy, oldx);
|
||
clrtoeol();
|
||
continue;
|
||
}
|
||
else
|
||
/* return default answer */
|
||
break;
|
||
}
|
||
}
|
||
|
||
return(*choices);
|
||
}
|
||
/* */
|
||
/************************************************************************
|
||
/
|
||
/ FUNCTION NAME: catchalarm()
|
||
/
|
||
/ FUNCTION: catch timer when waiting for input
|
||
/
|
||
/ AUTHOR: E. A. Estes, 12/4/85
|
||
/
|
||
/ ARGUMENTS: none
|
||
/
|
||
/ RETURN VALUE: none
|
||
/
|
||
/ MODULES CALLED: longjmp()
|
||
/
|
||
/ GLOBAL INPUTS: Timeoenv[]
|
||
/
|
||
/ GLOBAL OUTPUTS: none
|
||
/
|
||
/ DESCRIPTION:
|
||
/ Come here when the alarm expires while waiting for input.
|
||
/ Simply longjmp() into getanswer().
|
||
/
|
||
*************************************************************************/
|
||
|
||
void
|
||
catchalarm()
|
||
{
|
||
longjmp(Timeoenv, 1);
|
||
}
|