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annotate tools/tileset/main.cpp @ 126:a8bddc9566b0

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Server: make more comprehensive tests
author David Demelier <markand@malikania.fr>
date Fri, 22 Sep 2017 13:03:33 +0200
parents 0addfab87b17
children 4b292c20124c
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1 /*
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2 * main.cpp -- create malikania tilesets from tiled
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3 *
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4 * Copyright (c) 2013-2017 David Demelier <markand@malikania.fr>
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5 *
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6 * Permission to use, copy, modify, and/or distribute this software for any
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7 * purpose with or without fee is hereby granted, provided that the above
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8 * copyright notice and this permission notice appear in all copies.
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9 *
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10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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17 */
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18
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19 #include <cassert>
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20 #include <cerrno>
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21 #include <cstring>
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22 #include <fstream>
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23 #include <iostream>
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24 #include <stdexcept>
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25
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26 #include <boost/filesystem.hpp>
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27 #include <boost/property_tree/xml_parser.hpp>
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28
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29 #include <json.hpp>
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30
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31 #include <malikania/util.hpp>
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32
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33 namespace fs = boost::filesystem;
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34 namespace ptree = boost::property_tree;
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35
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36 namespace {
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37
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38 /*
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39 * load_tileset
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40 * ------------------------------------------------------------------
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41 *
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42 * In tiled maps, tilesets may be bundled in the map itself or can be in an
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43 * other file referenced by a path.
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44 *
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45 * This function check for the two case and return the XML data.
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46 */
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47 ptree::ptree load_tileset(const fs::path& path)
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48 {
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49 ptree::ptree xml;
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50
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51 ptree::read_xml(path.string(), xml);
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52
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53 if (path.extension() == ".tmx") {
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54 auto tileset = xml.get_child_optional("map.tileset");
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55
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56 if (!tileset)
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57 throw std::runtime_error("no <tileset> node found");
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58
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59 // Check if it's external or embeded.
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60 auto source = tileset->get_optional<std::string>("<xmlattr>.source");
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61
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62 if (source) {
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63 fs::path source_path(*source);
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64
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65 if (source_path.is_relative())
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66 source_path = path.parent_path() / *source;
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67
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68 ptree::read_xml(source_path.string(), xml);
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69
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70 xml = xml.get_child("tileset");
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71 } else
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72 xml = *tileset;
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73 } else
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74 xml = xml.get_child("tileset");
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75
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76 return xml;
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77 }
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78
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79 /*
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80 * read_tileset_properties
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81 * ------------------------------------------------------------------
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82 *
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83 * Extract all properties from the XML and return a JSON object.
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84 *
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85 * The XML looks like this:
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86 *
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87 * <tile id="123">
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88 * <properties>
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89 * <property name="abc" value"def" />
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90 * </properties>
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91 * </tile>
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92 */
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93 nlohmann::json read_tileset_properties(const ptree::ptree& tree)
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94 {
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95 auto properties = tree.get_child_optional("properties");
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96 auto json = nlohmann::json::object();
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97
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98 if (properties) {
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99 for (const auto& prop : *properties) {
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100 auto name = prop.second.get<std::string>("<xmlattr>.name");
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101 auto value = prop.second.get<std::string>("<xmlattr>.value");
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102
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103 json[name] = value;
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104 }
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105 }
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106
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107 return json;
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108 }
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109
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110 /*
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111 * save_tileset_properties
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112 * ------------------------------------------------------------------
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113 *
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114 * Read properties and add them to the JSON tile description.
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115 */
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116 void save_tileset_properties(nlohmann::json& tiles,
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117 const std::string& id,
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118 const ptree::ptree& tree)
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119 {
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120 tiles[id]["properties"] = read_tileset_properties(tree);
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121 }
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122
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123 /*
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124 * read_tileset_collisions
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125 * ------------------------------------------------------------------
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126 *
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127 * Extract the collisions from the XML object description.
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128 *
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129 * This function is used for rectangle and ellipses because they use the same
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130 * attributes.
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131 */
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132 nlohmann::json read_tileset_collision(const ptree::ptree& tree)
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133 {
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134 auto ret = nlohmann::json::object({
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135 { "x", tree.get<double>("<xmlattr>.x") },
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136 { "y", tree.get<double>("<xmlattr>.y") },
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137 { "width", tree.get<double>("<xmlattr>.width") },
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138 { "height", tree.get<double>("<xmlattr>.height") }
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139 });
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140
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141 if (tree.count("ellipse") > 0)
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142 ret["type"] = "ellipse";
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143 else
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144 ret["type"] = "rectangle";
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145
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146 return ret;
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147 }
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148
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149 /*
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150 * read_tileset_collision_polyline
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151 * ------------------------------------------------------------------
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152 *
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153 * Extract the collision description from a object of type polyline.
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154 */
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155 nlohmann::json read_tileset_collision_polyline(const ptree::ptree& tree)
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156 {
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157 auto points = tree.get<std::string>("polyline.<xmlattr>.points");
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158 auto array = nlohmann::json::array();
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159
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160 for (const auto& p : mlk::util::split(points, " "))
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161 array.push_back(std::stod(p));
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162
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163 return {
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164 { "type", "polyline" },
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165 { "points", std::move(array) }
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166 };
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167 }
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168
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David Demelier <markand@malikania.fr>
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169 /*
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170 * save_tileset_collisions
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171 * ------------------------------------------------------------------
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David Demelier <markand@malikania.fr>
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172 *
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173 * Read the collisions from the given XML tree and save them into the JSON
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174 * description.
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175 */
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176 void save_tileset_collisions(nlohmann::json& tiles,
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177 const std::string& id,
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178 const ptree::ptree& tree)
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179 {
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180 auto objectgroup = tree.get_child_optional("objectgroup");
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181
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182 if (!objectgroup)
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183 return;
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184
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185 auto array = nlohmann::json::array();
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186
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187 for (const auto& obj : *objectgroup) {
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188 if (obj.first != "object")
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David Demelier <markand@malikania.fr>
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189 continue;
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190
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191 nlohmann::json collision;
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192
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David Demelier <markand@malikania.fr>
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193 /*
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David Demelier <markand@malikania.fr>
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194 * Ellipse and rectangles are defined the same way, only check for
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David Demelier <markand@malikania.fr>
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195 * polylines at the moment.
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196 */
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197 if (obj.second.count("polyline") > 0)
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198 collision = read_tileset_collision_polyline(obj.second);
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199 else
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200 collision = read_tileset_collision(obj.second);
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201
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202 array.push_back(collision);
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parents:
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203 }
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204
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David Demelier <markand@malikania.fr>
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205 tiles[id]["collisions"] = std::move(array);
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parents:
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206 }
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parents:
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207
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David Demelier <markand@malikania.fr>
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208 /*
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David Demelier <markand@malikania.fr>
parents:
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209 * save_tileset
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David Demelier <markand@malikania.fr>
parents:
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210 * ------------------------------------------------------------------
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David Demelier <markand@malikania.fr>
parents:
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211 *
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David Demelier <markand@malikania.fr>
parents:
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212 * Save the tileset at the given path from the XML description.
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parents:
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213 */
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214 void save_tileset(const fs::path& path, const ptree::ptree& xml)
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David Demelier <markand@malikania.fr>
parents:
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215 {
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David Demelier <markand@malikania.fr>
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216 std::ofstream out(path.string(), std::ofstream::trunc);
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parents:
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217
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David Demelier <markand@malikania.fr>
parents:
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218 if (!out)
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David Demelier <markand@malikania.fr>
parents:
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219 throw std::runtime_error(std::strerror(errno));
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David Demelier <markand@malikania.fr>
parents:
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220
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David Demelier <markand@malikania.fr>
parents:
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221 nlohmann::json json{
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David Demelier <markand@malikania.fr>
parents:
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222 { "image", xml.get<std::string>("image.<xmlattr>.source") },
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parents:
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223 {
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David Demelier <markand@malikania.fr>
parents:
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224 "cell", {
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parents:
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225 { "width", xml.get<int>("<xmlattr>.tilewidth"), },
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226 { "height", xml.get<int>("<xmlattr>.tileheight") }
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parents:
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227 },
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David Demelier <markand@malikania.fr>
parents:
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228 }
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David Demelier <markand@malikania.fr>
parents:
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229 };
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David Demelier <markand@malikania.fr>
parents:
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230
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David Demelier <markand@malikania.fr>
parents:
diff changeset
231 nlohmann::json tiles = nlohmann::json::object();
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David Demelier <markand@malikania.fr>
parents:
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232
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David Demelier <markand@malikania.fr>
parents:
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233 for (const auto& p : xml) {
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David Demelier <markand@malikania.fr>
parents:
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234 if (p.first == "tile") {
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David Demelier <markand@malikania.fr>
parents:
diff changeset
235 auto id = p.second.get<std::string>("<xmlattr>.id");
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parents:
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236
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David Demelier <markand@malikania.fr>
parents:
diff changeset
237 save_tileset_properties(tiles, id, p.second);
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parents:
diff changeset
238 save_tileset_collisions(tiles, id, p.second);
0addfab87b17 Common: implement basic tilesets, closes #664
David Demelier <markand@malikania.fr>
parents:
diff changeset
239 }
0addfab87b17 Common: implement basic tilesets, closes #664
David Demelier <markand@malikania.fr>
parents:
diff changeset
240 }
0addfab87b17 Common: implement basic tilesets, closes #664
David Demelier <markand@malikania.fr>
parents:
diff changeset
241
0addfab87b17 Common: implement basic tilesets, closes #664
David Demelier <markand@malikania.fr>
parents:
diff changeset
242 if (!tiles.empty())
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David Demelier <markand@malikania.fr>
parents:
diff changeset
243 json["tiles"] = tiles;
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David Demelier <markand@malikania.fr>
parents:
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244
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David Demelier <markand@malikania.fr>
parents:
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245 out << json.dump(4) << std::endl;
0addfab87b17 Common: implement basic tilesets, closes #664
David Demelier <markand@malikania.fr>
parents:
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246 }
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David Demelier <markand@malikania.fr>
parents:
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247
0addfab87b17 Common: implement basic tilesets, closes #664
David Demelier <markand@malikania.fr>
parents:
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248 } // !namespace
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David Demelier <markand@malikania.fr>
parents:
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249
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David Demelier <markand@malikania.fr>
parents:
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250 int main(int argc, char** argv)
0addfab87b17 Common: implement basic tilesets, closes #664
David Demelier <markand@malikania.fr>
parents:
diff changeset
251 {
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David Demelier <markand@malikania.fr>
parents:
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252 -- argc;
0addfab87b17 Common: implement basic tilesets, closes #664
David Demelier <markand@malikania.fr>
parents:
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253 ++ argv;
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David Demelier <markand@malikania.fr>
parents:
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254
0addfab87b17 Common: implement basic tilesets, closes #664
David Demelier <markand@malikania.fr>
parents:
diff changeset
255 if (argc < 1) {
0addfab87b17 Common: implement basic tilesets, closes #664
David Demelier <markand@malikania.fr>
parents:
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256 std::cerr << "usage mlk-tileset input.tmx [output.json]" << std::endl;
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parents:
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257 std::cerr << " mlk-tileset input.tsx [output.json]" << std::endl;
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David Demelier <markand@malikania.fr>
parents:
diff changeset
258 return 1;
0addfab87b17 Common: implement basic tilesets, closes #664
David Demelier <markand@malikania.fr>
parents:
diff changeset
259 }
0addfab87b17 Common: implement basic tilesets, closes #664
David Demelier <markand@malikania.fr>
parents:
diff changeset
260
0addfab87b17 Common: implement basic tilesets, closes #664
David Demelier <markand@malikania.fr>
parents:
diff changeset
261 try {
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David Demelier <markand@malikania.fr>
parents:
diff changeset
262 fs::path input(argv[0]);
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David Demelier <markand@malikania.fr>
parents:
diff changeset
263 fs::path output;
0addfab87b17 Common: implement basic tilesets, closes #664
David Demelier <markand@malikania.fr>
parents:
diff changeset
264
0addfab87b17 Common: implement basic tilesets, closes #664
David Demelier <markand@malikania.fr>
parents:
diff changeset
265 if (argc >= 2)
0addfab87b17 Common: implement basic tilesets, closes #664
David Demelier <markand@malikania.fr>
parents:
diff changeset
266 output = argv[1];
0addfab87b17 Common: implement basic tilesets, closes #664
David Demelier <markand@malikania.fr>
parents:
diff changeset
267 else
0addfab87b17 Common: implement basic tilesets, closes #664
David Demelier <markand@malikania.fr>
parents:
diff changeset
268 output = fs::path(input).replace_extension(".json");
0addfab87b17 Common: implement basic tilesets, closes #664
David Demelier <markand@malikania.fr>
parents:
diff changeset
269
0addfab87b17 Common: implement basic tilesets, closes #664
David Demelier <markand@malikania.fr>
parents:
diff changeset
270 save_tileset(output, load_tileset(input));
0addfab87b17 Common: implement basic tilesets, closes #664
David Demelier <markand@malikania.fr>
parents:
diff changeset
271 } catch (const std::exception& ex) {
0addfab87b17 Common: implement basic tilesets, closes #664
David Demelier <markand@malikania.fr>
parents:
diff changeset
272 std::cerr << ex.what() << std::endl;
0addfab87b17 Common: implement basic tilesets, closes #664
David Demelier <markand@malikania.fr>
parents:
diff changeset
273 return 1;
0addfab87b17 Common: implement basic tilesets, closes #664
David Demelier <markand@malikania.fr>
parents:
diff changeset
274 }
0addfab87b17 Common: implement basic tilesets, closes #664
David Demelier <markand@malikania.fr>
parents:
diff changeset
275 }