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annotate libmlk-rpg/mlk/rpg/tileset-loader.c @ 646:7e1eb7f6c049 default tip @

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misc: remove .clang
author David Demelier <markand@malikania.fr>
date Sun, 04 Feb 2024 15:24:37 +0100
parents bb67f935a93f
children
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1 /*
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2 * tileset-loader.c -- abstract tileset loader
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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 <errno.h>
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21 #include <stdio.h>
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22 #include <stdlib.h>
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23 #include <string.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 #include <mlk/core/animation.h>
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28 #include <mlk/core/err.h>
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29 #include <mlk/core/sprite.h>
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30 #include <mlk/core/util.h>
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31
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32 #include "tileset-loader.h"
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33 #include "tileset.h"
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34
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35 static int
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36 collision_cmp(const void *d1, const void *d2)
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37 {
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38 const struct mlk_tileset_collision *c1 = d1;
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39 const struct mlk_tileset_collision *c2 = d2;
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40
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41 if (c1->id < c2->id)
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42 return -1;
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43 if (c1->id > c2->id)
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44 return 1;
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45
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46 return 0;
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47 }
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48
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49 static int
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50 animation_cmp(const void *d1, const void *d2)
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51 {
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52 const struct mlk_tileset_animation *a1 = d1;
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53 const struct mlk_tileset_animation *a2 = d2;
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54
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55 if (a1->id < a2->id)
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56 return -1;
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57 if (a1->id > a2->id)
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58 return 1;
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59
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60 return 0;
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61 }
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62
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63 static int
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64 parse_tilewidth(struct mlk_tileset_loader *loader,
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65 struct mlk_tileset *tileset,
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66 const char *line,
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67 FILE *fp)
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68 {
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69 (void)loader;
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70 (void)tileset;
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71 (void)fp;
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72
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73 if (sscanf(line, "tilewidth|%u", &loader->tilewidth) != 1 || loader->tilewidth == 0)
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74 return mlk_errf("tilewidth is null or invalid");
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75
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76 return 0;
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77 }
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78
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79 static int
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80 parse_tileheight(struct mlk_tileset_loader *loader,
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81 struct mlk_tileset *tileset,
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82 const char *line,
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83 FILE *fp)
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84 {
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85 (void)loader;
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86 (void)tileset;
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87 (void)fp;
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88
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89 if (sscanf(line, "tileheight|%u", &loader->tileheight) != 1 || loader->tileheight == 0)
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90 return mlk_errf("tileheight is null or invalid");
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91
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92 return 0;
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93 }
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94
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95 static int
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96 parse_collisions(struct mlk_tileset_loader *loader,
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97 struct mlk_tileset *tileset,
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98 const char *line,
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99 FILE *fp)
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100 {
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101 (void)line;
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102
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103 struct mlk_tileset_collision *array, *collision, *collisions = NULL;
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104 unsigned int id, w, h;
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105 int x, y;
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106 size_t collisionsz = 0;
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107
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108 while (fscanf(fp, "%u|%d|%d|%u|%u\n", &id, &x, &y, &w, &h) == 5) {
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109 if (!(array = loader->expand_collisions(loader, tileset, collisions, collisionsz + 1)))
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110 return -1;
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111
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112 collisions = array;
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113 collision = &collisions[collisionsz++];
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114 collision->id = id;
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115 collision->x = x;
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116 collision->y = y;
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117 collision->w = w;
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118 collision->h = h;
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119 }
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120
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121 /*
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122 * Sort and link this array in the final tileset, user has ownership of
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123 * the data.
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124 */
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125 qsort(collisions, collisionsz, sizeof (*collisions), collision_cmp);
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126 tileset->collisions = collisions;
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127 tileset->collisionsz = collisionsz;
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128
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129 return 0;
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130 }
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131
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132 static int
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133 parse_animations(struct mlk_tileset_loader *loader,
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134 struct mlk_tileset *tileset,
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135 const char *line,
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136 FILE *fp)
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137 {
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138 (void)line;
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139
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140 char fmt[64], filename[MLK_PATH_MAX];
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141 unsigned int id, delay;
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142 struct mlk_tileset_animation *array, *tileanimation, *tileanimations = NULL;
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143 struct mlk_texture *texture;
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144 struct mlk_sprite *sprite;
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145 struct mlk_animation *animation;
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146 size_t tileanimationsz = 0;
228
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147
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148 /* Create a format string for fscanf. */
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149 snprintf(fmt, sizeof (fmt), "%%u|%%%zu[^|]|%%u", sizeof (filename) - 1);
218
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150
238
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151 /*
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152 * When parsing animations, we have to create three different
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153 * structures:
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154 *
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155 * 1. The texture itself.
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156 * 2. The sprite object that will use the above texture.
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157 * 3. The animation object.
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158 * 4. Link the animation to the tileset animation.
238
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159 */
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160 while (fscanf(fp, fmt, &id, filename, &delay) == 3) {
593
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161 if (!(texture = loader->new_texture(loader, tileset, filename)))
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162 return -1;
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163 if (!(sprite = loader->new_sprite(loader, tileset)))
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164 return -1;
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165 if (!(animation = loader->new_animation(loader, tileset)))
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166 return -1;
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167 if (!(array = loader->expand_animations(loader, tileset, tileanimations, tileanimationsz + 1)))
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168 return -1;
218
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169
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170 /* Bind the texture to the new sprite. */
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171 sprite->texture = texture;
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172 sprite->cellw = loader->tilewidth;
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173 sprite->cellh = loader->tileheight;
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174 mlk_sprite_init(sprite);
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175
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176 /* Bind the sprite to the new animation. */
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177 animation->sprite = sprite;
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178 animation->delay = delay;
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179
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180 /* Add the animation to the array. */
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181 tileanimations = array;
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182 tileanimation = &tileanimations[tileanimationsz++];
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183 tileanimation->id = id;
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184 tileanimation->animation = animation;
238
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185 }
218
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186
238
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187 /*
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188 * Sort and link this array in the final tileset, user has ownership of
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189 * the data.
238
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190 */
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191 qsort(tileanimations, tileanimationsz, sizeof (*tileanimations), animation_cmp);
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192 tileset->animations = tileanimations;
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193 tileset->animationsz = tileanimationsz;
218
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194
298
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195 return 0;
218
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196 }
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197
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198 static int
552
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199 parse_image(struct mlk_tileset_loader *loader,
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200 struct mlk_tileset *tileset,
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201 const char *line,
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202 FILE *fp)
215
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203 {
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204 (void)fp;
215
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205
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206 const char *p;
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207 struct mlk_texture *texture;
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208 struct mlk_sprite *sprite;
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209
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210 if (loader->tilewidth == 0 || loader->tileheight == 0)
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211 return mlk_errf("missing tile dimensions before image");
215
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212 if (!(p = strchr(line, '|')))
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213 return mlk_errf("could not parse image");
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214 if (!(texture = loader->new_texture(loader, tileset, p + 1)))
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215 return -1;
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216 if (!(sprite = loader->new_sprite(loader, tileset)))
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217 return -1;
215
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218
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219 /* Initialize the sprite with the texture. */
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220 sprite->texture = texture;
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221 sprite->cellw = loader->tilewidth;
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222 sprite->cellh = loader->tileheight;
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223 mlk_sprite_init(sprite);
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224
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225 /* Link this texture to the final tileset. */
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226 tileset->sprite = sprite;
215
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227
298
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228 return 0;
215
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229 }
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230
298
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231 static int
552
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232 parse_line(struct mlk_tileset_loader *loader,
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233 struct mlk_tileset *tileset,
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234 const char *line,
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235 FILE *fp)
215
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236 {
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237 static const struct {
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238 const char *property;
552
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239 int (*read)(struct mlk_tileset_loader *, struct mlk_tileset *, const char *, FILE *);
215
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240 } props[] = {
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241 { "tilewidth", parse_tilewidth },
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242 { "tileheight", parse_tileheight },
552
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243 { "collisions", parse_collisions },
218
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244 { "animations", parse_animations },
215
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245 { "image", parse_image }
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246 };
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247
474
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diff changeset
248 for (size_t i = 0; i < MLK_UTIL_SIZE(props); ++i) {
215
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249 if (strncmp(line, props[i].property, strlen(props[i].property)) == 0)
552
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250 return props[i].read(loader, tileset, line, fp);
215
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251 }
411
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252
298
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diff changeset
253 return 0;
215
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254 }
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255
298
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diff changeset
256 static int
552
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257 check(const struct mlk_tileset *tileset)
215
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258 {
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259 if (!tileset->sprite)
547
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260 return mlk_errf("missing tileset image");
215
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261
298
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diff changeset
262 return 0;
215
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263 }
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264
552
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diff changeset
265 static int
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266 parse(struct mlk_tileset_loader *loader, struct mlk_tileset *tileset, FILE *fp)
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267 {
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268 char line[128];
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269
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270 while (fgets(line, sizeof (line), fp)) {
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271 /* Remove \n if any */
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272 line[strcspn(line, "\r\n")] = 0;
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diff changeset
273
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diff changeset
274 if (parse_line(loader, tileset, line, fp) < 0)
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diff changeset
275 return -1;
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276 }
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277
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278 return check(tileset);
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279 }
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280
298
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281 int
552
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282 mlk_tileset_loader_open(struct mlk_tileset_loader *loader,
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diff changeset
283 struct mlk_tileset *tileset,
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284 const char *path)
215
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285 {
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286 assert(loader);
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287 assert(tileset);
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288 assert(path);
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289
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290 FILE *fp;
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291
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292 memset(tileset, 0, sizeof (*tileset));
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293
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294 if (!(fp = fopen(path, "r")))
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295 return mlk_errf("%s", strerror(errno));
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296
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297 return parse(loader, tileset, fp);
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298 }
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299
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300 int
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301 mlk_tileset_loader_openmem(struct mlk_tileset_loader *loader,
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302 struct mlk_tileset *tileset,
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303 const void *data,
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304 size_t datasz)
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305 {
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306 assert(loader);
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307 assert(tileset);
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308 assert(data);
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309
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310 FILE *fp;
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311
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312 memset(tileset, 0, sizeof (*tileset));
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313
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314 if (!(fp = mlk_util_fmemopen((void *)data, datasz, "r")))
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315 return -1;
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316
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317 return parse(loader, tileset, fp);
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318 }
631
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319
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320 void
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321 mlk_tileset_loader_clear(struct mlk_tileset_loader *loader,
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322 struct mlk_tileset *tileset)
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323 {
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324 assert(loader);
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325 assert(tileset);
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326
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327 if (loader->clear)
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328 loader->clear(loader, tileset);
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329
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330 memset(tileset, 0, sizeof (*tileset));
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331 }
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332
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333 void
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334 mlk_tileset_loader_finish(struct mlk_tileset_loader *loader)
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335 {
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336 assert(loader);
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337
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338 if (loader->finish)
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339 loader->finish(loader);
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340 }