dab/human.C

   1 /*      $NetBSD: human.C,v 1.2 2003/12/26 18:03:34 christos Exp $       */
   2
   3 /*-
   4  * Copyright (c) 2003 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Christos Zoulas.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *        This product includes software developed by the NetBSD
  21  *        Foundation, Inc. and its contributors.
  22  * 4. Neither the name of The NetBSD Foundation nor the names of its
  23  *    contributors may be used to endorse or promote products derived
  24  *    from this software without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  36  * POSSIBILITY OF SUCH DAMAGE.
  37  */
  38
  39 /*
  40  * human.C: Human interface for dots, using rogue-like keys.
  41  */
  42 #include "defs.h"
  43 RCSID("$NetBSD: human.C,v 1.2 2003/12/26 18:03:34 christos Exp $")
  44
  45 #include "human.h"
  46 #include "board.h"
  47 #include "box.h"
  48
  49 #define CONTROL(a) ((a) & 037)
  50
  51 HUMAN::HUMAN(const char c) :
  52     PLAYER(c),
  53     _curx(0),
  54     _cury(1)
  55 {
  56 }
  57
  58 void HUMAN::play(const BOARD& b, size_t& y, size_t& x, int& dir)
  59 {
  60     int mv;
  61     b.setpos(_cury, _curx);
  62
  63     for (;;) {
  64         switch (mv = b.getmove()) {
  65         case 'h': case 'H':
  66             _curx -= 2;
  67             break;
  68
  69         case 'l': case 'L':
  70             _curx += 2;
  71             break;
  72
  73         case 'k': case 'K':
  74             _cury -= 2;
  75             break;
  76
  77         case 'j': case 'J':
  78             _cury += 2;
  79             break;
  80
  81         case 'u': case 'U':
  82             _curx += 1;
  83             _cury -= 1;
  84             break;
  85
  86         case 'y': case 'Y':
  87             _curx -= 1;
  88             _cury -= 1;
  89             break;
  90
  91         case 'b': case 'B':
  92             _curx -= 1;
  93             _cury += 1;
  94             break;
  95
  96         case 'n': case 'N':
  97             _curx += 1;
  98             _cury += 1;
  99             break;
 100
 101         case 'q': case 'Q':
 102             exit(0);
 103
 104         case CONTROL('L'): case CONTROL('R'):
 105             b.clean();
 106             b.paint();
 107             break;
 108
 109         case ' ':
 110             {
 111                 x = _curx / 2;
 112                 y = _cury / 2;
 113
 114                 if (_cury & 1) {
 115                     if (_curx == 0)
 116                         dir = BOX::left;
 117                     else {
 118                         x--;
 119                         dir = BOX::right;
 120                     }
 121                 }
 122
 123                 if (_curx & 1) {
 124                     if (_cury == 0)
 125                         dir = BOX::top;
 126                     else {
 127                         y--;
 128                         dir = BOX::bottom;
 129                     }
 130                 }
 131             }
 132             return;
 133
 134         default:
 135             break;
 136         }
 137
 138         // We add 2 before the comparison to avoid underflow
 139         if ((2 + _curx) - (_curx & 1) < 2)
 140             _curx = (b.nx() * 2) + (_curx & 1);
 141         if (_curx >= (b.nx() * 2) + 1)
 142             _curx = (_curx & 1);
 143
 144         if ((2 + _cury) - (_cury & 1) < 2)
 145             _cury = (b.ny() * 2) + (_cury & 1);
 146         if (_cury >= (b.ny() * 2) + 1)
 147             _cury = (_cury & 1);
 148
 149         b.setpos(_cury, _curx);
 150     }
 151 }