games/dab/box.cc

   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  *
  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.C: Box computations
  34  */
  35 #include "defs.h"
  36 RCSID("$NetBSD: box.cc,v 1.2 2005/08/09 02:38:32 christos Exp $")
  37
  38 #include "box.h"
  39 #include "board.h"
  40 #include "gamescreen.h"
  41 #include <curses.h>
  42
  43 const POINT BOX::edges[BOX::last] =
  44     { { 0, -1 }, { 0, 1 }, { -1, 0 }, { 1, 0 } };
  45 const POINT BOX::corners[BOX::last] =
  46     { { -1, -1 }, { -1, 1 }, { 1, -1 }, { 1, 1 } };
  47 const int  BOX::syms[BOX::last] =
  48     { GAMESCREEN::GS_HLINE, GAMESCREEN::GS_HLINE,
  49       GAMESCREEN::GS_VLINE, GAMESCREEN::GS_VLINE };
  50
  51 BOX::BOX(size_t py, size_t px, BOARD& b) :
  52     _b(b)
  53 {
  54     _centery = py * 2 + 1;
  55     _centerx = px * 2 + 1;
  56 }
  57
  58 void BOX::addcorner(size_t y, size_t x)
  59 {
  60     char sym;
  61     _b.getScrn()->moveto(y, x);
  62     if (x == 0) {
  63         if (y == 0)
  64             sym = GAMESCREEN::GS_ULCORNER;
  65         else if (y == _b.ty() - 1)
  66             sym = GAMESCREEN::GS_LLCORNER;
  67         else
  68             sym = GAMESCREEN::GS_LTEE;
  69     } else if (x == _b.tx() - 1) {
  70         if (y == 0)
  71             sym = GAMESCREEN::GS_URCORNER;
  72         else if (y == _b.ty() - 1)
  73             sym = GAMESCREEN::GS_LRCORNER;
  74         else
  75             sym = GAMESCREEN::GS_RTEE;
  76     } else if (y == 0)
  77         sym = GAMESCREEN::GS_TTEE;
  78     else if (y == _b.ty() - 1)
  79         sym = GAMESCREEN::GS_BTEE;
  80     else
  81         sym = GAMESCREEN::GS_PLUS;
  82
  83     _b.getScrn()->addedge(sym);
  84 }
  85
  86 // Paint a box
  87 void BOX::paint(void)
  88 {
  89     int e;
  90     if (_b.getScrn() == NULL)
  91         return;
  92
  93     _b.getScrn()->moveto(_centery, _centerx);
  94     _b.getScrn()->addsym(name());
  95
  96     for (e = BOX::first; e < BOX::last; e++) {
  97         addcorner(_centery + corners[e].y, _centerx + corners[e].x);
  98         _b.getScrn()->moveto(_centery + edges[e].y, _centerx + edges[e].x);
  99         _b.getScrn()->addedge(edge(static_cast<EDGE>(e)));
 100     }
 101     _b.getScrn()->redraw();
 102 }
 103
 104 // Return the name
 105 int& BOX::name(void)
 106 {
 107     return _b.data(_centery, _centerx);
 108 }
 109
 110 // Set an edge
 111 void BOX::set(int e)
 112 {
 113     _b.data(_centery + edges[e].y, _centerx + edges[e].x) = syms[e];
 114 }
 115
 116 // Clear an edge
 117 void BOX::clr(int e)
 118 {
 119     _b.data(_centery + edges[e].y, _centerx + edges[e].x) = ' ';
 120 }
 121
 122 // Test an edge
 123 int BOX::isset(int e) const
 124 {
 125     return _b.data(_centery + edges[e].y, _centerx + edges[e].x) != ' ';
 126 }
 127
 128 // Return the edge
 129 int& BOX::edge(int e)
 130 {
 131     return _b.data(_centery + edges[e].y, _centerx + edges[e].x);
 132 }
 133
 134 // Count the number of edges set in the box
 135 int BOX::count(void) const
 136 {
 137     int cnt = 0;
 138
 139     for (int e = BOX::first; e < BOX::last; e++)
 140         cnt += isset(static_cast<EDGE>(e));
 141     return cnt;
 142 }
 143
 144 // Clear the box
 145 void BOX::reset(void)
 146 {
 147     for (int e = BOX::first; e < BOX::last; e++)
 148         clr(static_cast<EDGE>(e));
 149     name() = ' ';
 150 }