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annotate mlk-tileset/mlk-tileset.c @ 594:e070fdcc592b

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misc: various cleanups
author David Demelier <markand@malikania.fr>
date Fri, 24 Mar 2023 15:15:31 +0100
parents 0407f746a571
children
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1 /*
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2 * mlk-tileset.c -- convert tiled tilesets JSON files into custom files
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3 *
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4 * Copyright (c) 2020-2023 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 <assert.h>
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20 #include <stdio.h>
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21 #include <string.h>
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22
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23 #include <jansson.h>
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24
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25 #include <mlk/util/util.h>
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26
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27 static void
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28 write_dimensions(const json_t *document)
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29 {
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30 const json_t *tilewidth, *tileheight;
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31
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32 tilewidth = json_object_get(document, "tilewidth");
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33 tileheight = json_object_get(document, "tileheight");
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34
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35 if (!json_is_integer(tilewidth))
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36 mlk_util_die("invalid 'tilewidth' property\n");
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37 if (!json_is_integer(tileheight))
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38 mlk_util_die("invalid 'tileheight' property\n");
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39
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40 printf("tilewidth|%u\n", (unsigned int)json_integer_value(tilewidth));
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41 printf("tileheight|%u\n", (unsigned int)json_integer_value(tileheight));
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42 }
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43
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44 static void
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45 write_image(const json_t *document)
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46 {
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47 const json_t *image;
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48
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49 image = json_object_get(document, "image");
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50
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51 if (!json_is_string(image))
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52 mlk_util_die("invalid 'image' property\n");
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53
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54 printf("image|%s\n", json_string_value(image));
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55 }
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56
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57 static const json_t *
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58 find_property_value(const json_t *array, const char *prop)
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59 {
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60 const json_t *obj, *name;
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61 size_t i;
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62
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63 json_array_foreach(array, i, obj) {
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64 name = json_object_get(obj, "name");
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65
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66 if (!name || !json_is_string(name))
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67 mlk_util_die("invalid property object\n");
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68
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69 if (strcmp(json_string_value(name), prop) == 0)
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70 return json_object_get(obj, "value");
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71 }
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72
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73 return NULL;
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74 }
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75
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76 static void
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77 write_animation(const json_t *tile)
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78 {
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79 const json_t *id, *properties, *file, *delay;
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80
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81 id = json_object_get(tile, "id");
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82 properties = json_object_get(tile, "properties");
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83 file = find_property_value(properties, "animation-file");
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84 delay = find_property_value(properties, "animation-delay");
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85
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86 /* Animations are completely optional. */
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87 if (!json_is_array(properties))
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88 return;
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89
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90 if (!json_is_integer(id))
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91 mlk_util_die("invalid 'id' property in tile\n");
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92
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93 if (json_is_string(file)) {
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94 printf("%d|%s|", (int)json_integer_value(id), json_string_value(file));
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95
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96 if (json_is_integer(delay))
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97 printf("%d\n", (int)json_integer_value(delay));
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98 else
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99 printf("10\n");
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100 }
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101 }
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102
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103 static void
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104 write_collision(const json_t *tile)
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105 {
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106 const json_t *id, *objectgroup, *objects, *first, *x, *y, *w, *h;
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107
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108 id = json_object_get(tile, "id");
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109 objectgroup = json_object_get(tile, "objectgroup");
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110 objects = json_object_get(objectgroup, "objects");
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111 first = json_array_get(objects, 0);
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112
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113 /* Collisions are optional. */
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114 if (!json_is_object(objectgroup))
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115 return;
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116
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117 if (!json_is_integer(id))
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118 mlk_util_die("invalid 'id' property in tile\n");
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119 if (!json_is_array(objects))
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120 mlk_util_die("invalid 'objects' property in tile\n");
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121
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122 x = json_object_get(first, "x");
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123 y = json_object_get(first, "y");
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124 w = json_object_get(first, "width");
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125 h = json_object_get(first, "height");
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126
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127 if (!json_is_integer(x) || !json_is_integer(y) ||
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128 !json_is_integer(w) || !json_is_integer(h))
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129 mlk_util_die("invalid collide object in tile description\n");
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130
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131 printf("%d|%d|%d|%d|%d\n",
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132 (int)json_integer_value(id),
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133 (int)json_integer_value(x),
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134 (int)json_integer_value(y),
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135 (int)json_integer_value(w),
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136 (int)json_integer_value(h));
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137 }
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138
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139 static void
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140 write_collisions(const json_t *tiles)
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141 {
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142 size_t index;
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143 json_t *object;
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144
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145 if (!json_is_array(tiles))
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146 return;
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147
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148 printf("collisions\n");
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149
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150 json_array_foreach(tiles, index, object) {
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151 if (!json_is_object(object))
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152 mlk_util_die("tile is not an object\n");
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153
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154 write_collision(object);
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155 }
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156 }
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157
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158 static void
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159 write_animations(const json_t *tiles)
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160 {
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161 size_t index;
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162 json_t *object;
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163
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164 if (!json_is_array(tiles))
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165 return;
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166
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167 printf("animations\n");
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168
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169 json_array_foreach(tiles, index, object) {
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170 if (!json_is_object(object))
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171 mlk_util_die("tile is not an object\n");
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172
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173 write_animation(object);
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174 }
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175 }
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176
215
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177 int
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178 main(void)
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179 {
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180 json_t *document;
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181 json_error_t error;
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182
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183 document = json_loadf(stdin, 0, &error);
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184
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185 if (!document)
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186 mlk_util_die("%d:%d: %s\n", error.line, error.column, error.text);
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187 if (!json_is_object(document))
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188 mlk_util_die("root value isn't an object\n");
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189
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190 write_dimensions(document);
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191 write_image(document);
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192 write_collisions(json_object_get(document, "tiles"));
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193 write_animations(json_object_get(document, "tiles"));
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194
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195 json_decref(document);
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196 }