1 /* $NetBSD: box.cc,v 1.4 2021/12/05 09:22:45 rillig 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 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 /*
33 * Box computations
34 */
35
36 #include "defs.h"
37 RCSID("$NetBSD: box.cc,v 1.4 2021/12/05 09:22:45 rillig Exp $")
38
39 #include "box.h"
40 #include "board.h"
41 #include "gamescreen.h"
42 #include <curses.h>
43
44 const POINT BOX::edges[BOX::last] =
45 { { 0, -1 }, { 0, 1 }, { -1, 0 }, { 1, 0 } };
46 const POINT BOX::corners[BOX::last] =
47 { { -1, -1 }, { -1, 1 }, { 1, -1 }, { 1, 1 } };
48 const int BOX::syms[BOX::last] =
49 { GAMESCREEN::GS_HLINE, GAMESCREEN::GS_HLINE,
50 GAMESCREEN::GS_VLINE, GAMESCREEN::GS_VLINE };
51
BOX(size_t py,size_t px,BOARD & b)52 BOX::BOX(size_t py, size_t px, BOARD& b) :
53 _b(b)
54 {
55 _centery = py * 2 + 1;
56 _centerx = px * 2 + 1;
57 }
58
addcorner(size_t y,size_t x)59 void BOX::addcorner(size_t y, size_t x)
60 {
61 char sym;
62 _b.getScrn()->moveto(y, x);
63 if (x == 0) {
64 if (y == 0)
65 sym = GAMESCREEN::GS_ULCORNER;
66 else if (y == _b.ty() - 1)
67 sym = GAMESCREEN::GS_LLCORNER;
68 else
69 sym = GAMESCREEN::GS_LTEE;
70 } else if (x == _b.tx() - 1) {
71 if (y == 0)
72 sym = GAMESCREEN::GS_URCORNER;
73 else if (y == _b.ty() - 1)
74 sym = GAMESCREEN::GS_LRCORNER;
75 else
76 sym = GAMESCREEN::GS_RTEE;
77 } else if (y == 0)
78 sym = GAMESCREEN::GS_TTEE;
79 else if (y == _b.ty() - 1)
80 sym = GAMESCREEN::GS_BTEE;
81 else
82 sym = GAMESCREEN::GS_PLUS;
83
84 _b.getScrn()->addedge(sym);
85 }
86
87 // Paint a box
paint(void)88 void BOX::paint(void)
89 {
90 int e;
91 if (_b.getScrn() == NULL)
92 return;
93
94 _b.getScrn()->moveto(_centery, _centerx);
95 _b.getScrn()->addsym(name());
96
97 for (e = BOX::first; e < BOX::last; e++) {
98 addcorner(_centery + corners[e].y, _centerx + corners[e].x);
99 _b.getScrn()->moveto(_centery + edges[e].y, _centerx + edges[e].x);
100 _b.getScrn()->addedge(edge(static_cast<EDGE>(e)));
101 }
102 _b.getScrn()->redraw();
103 }
104
105 // Return the name
name(void)106 int& BOX::name(void)
107 {
108 return _b.data(_centery, _centerx);
109 }
110
111 // Set an edge
set(int e)112 void BOX::set(int e)
113 {
114 _b.data(_centery + edges[e].y, _centerx + edges[e].x) = syms[e];
115 }
116
117 // Clear an edge
clr(int e)118 void BOX::clr(int e)
119 {
120 _b.data(_centery + edges[e].y, _centerx + edges[e].x) = ' ';
121 }
122
123 // Test an edge
isset(int e) const124 int BOX::isset(int e) const
125 {
126 return _b.data(_centery + edges[e].y, _centerx + edges[e].x) != ' ';
127 }
128
129 // Return the edge
edge(int e)130 int& BOX::edge(int e)
131 {
132 return _b.data(_centery + edges[e].y, _centerx + edges[e].x);
133 }
134
135 // Count the number of edges set in the box
count(void) const136 int BOX::count(void) const
137 {
138 int cnt = 0;
139
140 for (int e = BOX::first; e < BOX::last; e++)
141 cnt += isset(static_cast<EDGE>(e));
142 return cnt;
143 }
144
145 // Clear the box
reset(void)146 void BOX::reset(void)
147 {
148 for (int e = BOX::first; e < BOX::last; e++)
149 clr(static_cast<EDGE>(e));
150 name() = ' ';
151 }
152