1/*	$NetBSD: box.h,v 1.4 2021/12/05 09:53:15 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 * Single box utilities; A box is an entity with four edges, four corners, and
34 * a center that maps directly to a board
35 */
36
37#ifndef _H_BOX
38#define _H_BOX
39
40#include <stdlib.h>
41
42class BOARD;
43
44class POINT {
45  public:
46    int x;
47    int y;
48};
49
50class BOX {
51  public:
52    enum EDGE {
53	first  = 0,
54	top    = 0,
55	bottom = 1,
56	left   = 2,
57	right  = 3,
58	last   = 4,
59    };
60
61    BOX(size_t py, size_t px, BOARD& b);
62
63    void reset(void);		// Clear a box
64    void paint(void);		// Paint a box
65
66    // Member access
67    int& name(void);
68    int& edge(int e);
69
70    // Edge manipulations
71    void set(int e);
72    void clr(int e);
73    int isset(int e) const;
74
75    int count(void) const;	// Count the number of edges in use
76
77    // Useful constants
78    // Relative coordinates of the edges from the center of the box.
79    static const POINT edges[BOX::last];
80    // Relative coordinates of the corners from the center of the box.
81    static const POINT corners[BOX::last];
82    // Character symbols of the four edges
83    static const int syms[BOX::last];
84
85  private:
86    void addcorner(size_t y, size_t x);	// add a corner character
87
88    size_t _centerx;	// Coordinates of the center in board units
89    size_t _centery;
90    BOARD& _b;		// The board we refer to
91};
92
93#endif
94