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box.cc revision 1.2 
      1 /*	$NetBSD: box.cc,v 1.2 2005/08/09 02:38:32 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  * box.C: Box computations
     41  */
     42 #include "defs.h"
     43 RCSID("$NetBSD: box.cc,v 1.2 2005/08/09 02:38:32 christos Exp $")
     44 
     45 #include "box.h"
     46 #include "board.h"
     47 #include "gamescreen.h"
     48 #include <curses.h>
     49 
     50 const POINT BOX::edges[BOX::last] =
     51     { { 0, -1 }, { 0, 1 }, { -1, 0 }, { 1, 0 } };
     52 const POINT BOX::corners[BOX::last] =
     53     { { -1, -1 }, { -1, 1 }, { 1, -1 }, { 1, 1 } };
     54 const int  BOX::syms[BOX::last] =
     55     { GAMESCREEN::GS_HLINE, GAMESCREEN::GS_HLINE,
     56       GAMESCREEN::GS_VLINE, GAMESCREEN::GS_VLINE };
     57 
     58 BOX::BOX(size_t py, size_t px, BOARD& b) :
     59     _b(b)
     60 {
     61     _centery = py * 2 + 1;
     62     _centerx = px * 2 + 1;
     63 }
     64 
     65 void BOX::addcorner(size_t y, size_t x)
     66 {
     67     char sym;
     68     _b.getScrn()->moveto(y, x);
     69     if (x == 0) {
     70 	if (y == 0)
     71 	    sym = GAMESCREEN::GS_ULCORNER;
     72 	else if (y == _b.ty() - 1)
     73 	    sym = GAMESCREEN::GS_LLCORNER;
     74 	else
     75 	    sym = GAMESCREEN::GS_LTEE;
     76     } else if (x == _b.tx() - 1) {
     77 	if (y == 0)
     78 	    sym = GAMESCREEN::GS_URCORNER;
     79 	else if (y == _b.ty() - 1)
     80 	    sym = GAMESCREEN::GS_LRCORNER;
     81 	else
     82 	    sym = GAMESCREEN::GS_RTEE;
     83     } else if (y == 0)
     84 	sym = GAMESCREEN::GS_TTEE;
     85     else if (y == _b.ty() - 1)
     86 	sym = GAMESCREEN::GS_BTEE;
     87     else
     88 	sym = GAMESCREEN::GS_PLUS;
     89 
     90     _b.getScrn()->addedge(sym);
     91 }
     92 
     93 // Paint a box
     94 void BOX::paint(void)
     95 {
     96     int e;
     97     if (_b.getScrn() == NULL)
     98 	return;
     99 
    100     _b.getScrn()->moveto(_centery, _centerx);
    101     _b.getScrn()->addsym(name());
    102 
    103     for (e = BOX::first; e < BOX::last; e++) {
    104 	addcorner(_centery + corners[e].y, _centerx + corners[e].x);
    105 	_b.getScrn()->moveto(_centery + edges[e].y, _centerx + edges[e].x);
    106 	_b.getScrn()->addedge(edge(static_cast<EDGE>(e)));
    107     }
    108     _b.getScrn()->redraw();
    109 }
    110 
    111 // Return the name
    112 int& BOX::name(void)
    113 {
    114     return _b.data(_centery, _centerx);
    115 }
    116 
    117 // Set an edge
    118 void BOX::set(int e)
    119 {
    120     _b.data(_centery + edges[e].y, _centerx + edges[e].x) = syms[e];
    121 }
    122 
    123 // Clear an edge
    124 void BOX::clr(int e)
    125 {
    126     _b.data(_centery + edges[e].y, _centerx + edges[e].x) = ' ';
    127 }
    128 
    129 // Test an edge
    130 int BOX::isset(int e) const
    131 {
    132     return _b.data(_centery + edges[e].y, _centerx + edges[e].x) != ' ';
    133 }
    134 
    135 // Return the edge
    136 int& BOX::edge(int e)
    137 {
    138     return _b.data(_centery + edges[e].y, _centerx + edges[e].x);
    139 }
    140 
    141 // Count the number of edges set in the box
    142 int BOX::count(void) const
    143 {
    144     int cnt = 0;
    145 
    146     for (int e = BOX::first; e < BOX::last; e++)
    147 	cnt += isset(static_cast<EDGE>(e));
    148     return cnt;
    149 }
    150 
    151 // Clear the box
    152 void BOX::reset(void)
    153 {
    154     for (int e = BOX::first; e < BOX::last; e++)
    155 	clr(static_cast<EDGE>(e));
    156     name() = ' ';
    157 }
    158