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annotate engine/core/model/metamodel/grids/squaregrid.cpp @ 625:92290efadab7

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* This fixes a small bug that causes some primitives to not be rendered by the OpenGL renderbackend
author prock@33b003aa-7bff-0310-803a-e67f0ece8222
date Fri, 01 Oct 2010 21:27:37 +0000
parents 90005975cdbb
children
rev   line source
0
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1 /***************************************************************************
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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2 * Copyright (C) 2005-2008 by the FIFE team *
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3 * http://www.fifengine.de *
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4 * This file is part of FIFE. *
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5 * *
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90005975cdbb * Final LGPL switch step by adjusting the file headers
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6 * FIFE is free software; you can redistribute it and/or *
90005975cdbb * Final LGPL switch step by adjusting the file headers
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7 * modify it under the terms of the GNU Lesser General Public *
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8 * License as published by the Free Software Foundation; either *
90005975cdbb * Final LGPL switch step by adjusting the file headers
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9 * version 2.1 of the License, or (at your option) any later version. *
0
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10 * *
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11 * This library is distributed in the hope that it will be useful, *
0
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
90005975cdbb * Final LGPL switch step by adjusting the file headers
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14 * Lesser General Public License for more details. *
0
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15 * *
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16 * You should have received a copy of the GNU Lesser General Public *
90005975cdbb * Final LGPL switch step by adjusting the file headers
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17 * License along with this library; if not, write to the *
0
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18 * Free Software Foundation, Inc., *
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19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
0
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20 ***************************************************************************/
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21
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22 // Standard C++ library includes
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23 #include <cassert>
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24 #include <iostream>
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25
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26 // 3rd party library includes
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27
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28 // FIFE includes
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29 // These includes are split up in two parts, separated by one empty line
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30 // First block: files included from the FIFE root src directory
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31 // Second block: files included from the same folder
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32 #include "util/math/fife_math.h"
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33 #include "util/log/logger.h"
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34
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35 #include "squaregrid.h"
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36
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37 namespace FIFE {
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38 static Logger _log(LM_SQUAREGRID);
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39
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40 SquareGrid::SquareGrid(bool allow_diagonals):
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41 CellGrid(allow_diagonals) {
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42 }
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43
33
112fc4af772d moved grid ownership to model in similar way as with pathers
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44 CellGrid* SquareGrid::clone() {
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45 return new SquareGrid(this);
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46 }
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47
0
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48 SquareGrid::~SquareGrid() {
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49 }
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50
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51 bool SquareGrid::isAccessible(const ModelCoordinate& curpos, const ModelCoordinate& target) {
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52 if (curpos == target)
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53 return true;
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54 if ((curpos.x == target.x) && (curpos.y - 1 == target.y))
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55 return true;
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56 if ((curpos.x == target.x) && (curpos.y + 1 == target.y))
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57 return true;
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58 if ((curpos.x + 1 == target.x) && (curpos.y == target.y))
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59 return true;
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60 if ((curpos.x - 1 == target.x) && (curpos.y == target.y))
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61 return true;
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62
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63 if (m_allow_diagonals) {
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64 return isAccessibleDiagonal(curpos, target);
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65 }
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66
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67 return false;
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68 }
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69
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70 bool SquareGrid::isAccessibleDiagonal(const ModelCoordinate& curpos, const ModelCoordinate& target) {
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71 if ((curpos.x - 1 == target.x) && (curpos.y - 1 == target.y))
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72 return true;
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73 if ((curpos.x - 1 == target.x) && (curpos.y + 1 == target.y))
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74 return true;
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75 if ((curpos.x + 1 == target.x) && (curpos.y - 1 == target.y))
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76 return true;
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77 if ((curpos.x + 1 == target.x) && (curpos.y + 1 == target.y))
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78 return true;
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79 return false;
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80 }
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81
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82 float SquareGrid::getAdjacentCost(const ModelCoordinate& curpos, const ModelCoordinate& target) {
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83 assert(isAccessible(curpos, target));
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84 if (curpos == target) {
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85 return 0;
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86 }
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87 if (isAccessibleDiagonal(curpos, target)) {
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88 return sqrt(m_xscale*m_xscale + m_yscale*m_yscale);
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89 }
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90 if (curpos.x == target.x) {
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91 return m_xscale;
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92 }
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93 return m_yscale;
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94 }
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95
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96 const std::string& SquareGrid::getType() const {
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97 static std::string type("square");
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98 return type;
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99 }
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100
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101 const std::string& SquareGrid::getName() const {
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102 static std::string squareGrid("Square Grid");
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103 return squareGrid;
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104 }
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105
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106 ExactModelCoordinate SquareGrid::toMapCoordinates(const ExactModelCoordinate& layer_coords) {
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107 return m_matrix * layer_coords;
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108 }
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109
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110 ExactModelCoordinate SquareGrid::toExactLayerCoordinates(const ExactModelCoordinate& map_coord) {
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111 return m_inverse_matrix * map_coord;
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112 }
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113
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114 ModelCoordinate SquareGrid::toLayerCoordinates(const ExactModelCoordinate& map_coord) {
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115 ExactModelCoordinate dblpt = toExactLayerCoordinates(map_coord);
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116 ModelCoordinate result;
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117 result.x = static_cast<int>(floor(dblpt.x));
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118 result.y = static_cast<int>(floor(dblpt.y));
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119
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120 if ((dblpt.x - static_cast<double>(result.x)) > 0.5) {
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121 result.x++;
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122 }
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123 if ((dblpt.y - static_cast<double>(result.y)) > 0.5) {
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124 result.y++;
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125 }
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126
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127 return result;
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128 }
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129
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130 void SquareGrid::getVertices(std::vector<ExactModelCoordinate>& vtx, const ModelCoordinate& cell) {
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131 vtx.clear();
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132 double x = static_cast<double>(cell.x);
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133 double y = static_cast<double>(cell.y);
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134 vtx.push_back(ExactModelCoordinate(x-0.5, y-0.5));
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135 vtx.push_back(ExactModelCoordinate(x+0.5, y-0.5));
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136 vtx.push_back(ExactModelCoordinate(x+0.5, y+0.5));
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137 vtx.push_back(ExactModelCoordinate(x-0.5, y+0.5));
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138 }
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139 }