BSD 4_4 release

[unix-history] / usr / src / contrib / hunt / terminal.c

/*
*  Hunt
*  Copyright (c) 1985 Conrad C. Huang, Gregory S. Couch, Kenneth C.R.C. Arnold
*  San Francisco, California
*/

# include       "hunt.h"
# define        TERM_WIDTH      80      /* Assume terminals are 80-char wide */

/*
* cgoto:
*      Move the cursor to the given position on the given player's
*      terminal.
*/
cgoto(pp, y, x)
register PLAYER *pp;
register int    y, x;
{
       if (x == pp->p_curx && y == pp->p_cury)
               return;
       sendcom(pp, MOVE, y, x);
       pp->p_cury = y;
       pp->p_curx = x;
}

/*
* outch:
*      Put out a single character.
*/
outch(pp, ch)
register PLAYER *pp;
char            ch;
{
       if (++pp->p_curx >= TERM_WIDTH) {
               pp->p_curx = 0;
               pp->p_cury++;
       }
       (void) putc(ch, pp->p_output);
}

/*
* outstr:
*      Put out a string of the given length.
*/
outstr(pp, str, len)
register PLAYER *pp;
register char   *str;
register int    len;
{
       pp->p_curx += len;
       pp->p_cury += (pp->p_curx / TERM_WIDTH);
       pp->p_curx %= TERM_WIDTH;
       while (len--)
               (void) putc(*str++, pp->p_output);
}

/*
* clrscr:
*      Clear the screen, and reset the current position on the screen.
*/
clrscr(pp)
register PLAYER *pp;
{
       sendcom(pp, CLEAR);
       pp->p_cury = 0;
       pp->p_curx = 0;
}

/*
* ce:
*      Clear to the end of the line
*/
ce(pp)
PLAYER  *pp;
{
       sendcom(pp, CLRTOEOL);
}

/*
* ref;
*      Refresh the screen
*/
ref(pp)
register PLAYER *pp;
{
       sendcom(pp, REFRESH);
}

/*
* sendcom:
*      Send a command to the given user
*/
/* VARARGS2 */
sendcom(pp, command, arg1, arg2)
register PLAYER         *pp;
register int    command;
int                     arg1, arg2;
{
       (void) putc(command, pp->p_output);
       switch (command & 0377) {
         case MOVE:
               (void) putc(arg1, pp->p_output);
               (void) putc(arg2, pp->p_output);
               break;
         case ADDCH:
         case READY:
               (void) putc(arg1, pp->p_output);
               break;
       }
}