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human.cc revision 1.1 
      1 /*	$NetBSD: human.cc,v 1.1 2003/12/27 01:16:55 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.cc,v 1.1 2003/12/27 01:16:55 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 }
    152