games/hunt/huntd/terminal.c

   1 /*      $NetBSD: terminal.c,v 1.6 2009/07/04 02:37:20 dholland Exp $    */
   2 /*
   3  * Copyright (c) 1983-2003, Regents of the University of California.
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions are
   8  * met:
   9  *
  10  * + Redistributions of source code must retain the above copyright
  11  *   notice, this list of conditions and the following disclaimer.
  12  * + Redistributions in binary form must reproduce the above copyright
  13  *   notice, this list of conditions and the following disclaimer in the
  14  *   documentation and/or other materials provided with the distribution.
  15  * + Neither the name of the University of California, San Francisco nor
  16  *   the names of its contributors may be used to endorse or promote
  17  *   products derived from this software without specific prior written
  18  *   permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  21  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  23  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  24  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include <sys/cdefs.h>
  34 #ifndef lint
  35 __RCSID("$NetBSD: terminal.c,v 1.6 2009/07/04 02:37:20 dholland Exp $");
  36 #endif /* not lint */
  37
  38 #include <stdarg.h>
  39 #include "hunt.h"
  40 #define TERM_WIDTH      80      /* Assume terminals are 80-char wide */
  41
  42 /*
  43  * cgoto:
  44  *      Move the cursor to the given position on the given player's
  45  *      terminal.
  46  */
  47 void
  48 cgoto(PLAYER *pp, int y, int x)
  49 {
  50         if (x == pp->p_curx && y == pp->p_cury)
  51                 return;
  52         sendcom(pp, MOVE, y, x);
  53         pp->p_cury = y;
  54         pp->p_curx = x;
  55 }
  56
  57 /*
  58  * outch:
  59  *      Put out a single character.
  60  */
  61 void
  62 outch(PLAYER *pp, int ch)
  63 {
  64         if (++pp->p_curx >= TERM_WIDTH) {
  65                 pp->p_curx = 0;
  66                 pp->p_cury++;
  67         }
  68         (void) putc(ch, pp->p_output);
  69 }
  70
  71 /*
  72  * outstr:
  73  *      Put out a string of the given length.
  74  */
  75 void
  76 outstr(PLAYER *pp, const char *str, int len)
  77 {
  78         pp->p_curx += len;
  79         pp->p_cury += (pp->p_curx / TERM_WIDTH);
  80         pp->p_curx %= TERM_WIDTH;
  81         while (len--)
  82                 (void) putc(*str++, pp->p_output);
  83 }
  84
  85 /*
  86  * clrscr:
  87  *      Clear the screen, and reset the current position on the screen.
  88  */
  89 void
  90 clrscr(PLAYER *pp)
  91 {
  92         sendcom(pp, CLEAR);
  93         pp->p_cury = 0;
  94         pp->p_curx = 0;
  95 }
  96
  97 /*
  98  * ce:
  99  *      Clear to the end of the line
 100  */
 101 void
 102 ce(PLAYER *pp)
 103 {
 104         sendcom(pp, CLRTOEOL);
 105 }
 106
 107 #if 0           /* XXX lukem */
 108 /*
 109  * ref;
 110  *      Refresh the screen
 111  */
 112 void
 113 ref(PLAYER *pp)
 114 {
 115         sendcom(pp, REFRESH);
 116 }
 117 #endif
 118
 119 /*
 120  * sendcom:
 121  *      Send a command to the given user
 122  */
 123 void
 124 sendcom(PLAYER *pp, int command, ...)
 125 {
 126         va_list ap;
 127         int arg1, arg2;
 128
 129         va_start(ap, command);
 130         (void) putc(command, pp->p_output);
 131         switch (command & 0377) {
 132         case MOVE:
 133                 arg1 = va_arg(ap, int);
 134                 arg2 = va_arg(ap, int);
 135                 (void) putc(arg1, pp->p_output);
 136                 (void) putc(arg2, pp->p_output);
 137                 break;
 138         case ADDCH:
 139         case READY:
 140                 arg1 = va_arg(ap, int);
 141                 (void) putc(arg1, pp->p_output);
 142                 break;
 143         }
 144
 145         va_end(ap);             /* No return needed for void functions. */
 146 }