102 lines
2.2 KiB
C
102 lines
2.2 KiB
C
/*
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Copyright (C) 2018-2019 Parallel Realities
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "atlas.h"
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static void loadAtlasData(void);
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static Atlas atlases[NUM_ATLAS_BUCKETS];
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void initAtlas(void)
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{
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memset(&atlases, 0, sizeof(Atlas) * NUM_ATLAS_BUCKETS);
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loadAtlasData();
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}
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Atlas *getImageFromAtlas(char *filename)
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{
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Atlas *a;
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unsigned long i;
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i = hashcode(filename) % NUM_ATLAS_BUCKETS;
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for (a = atlases[i].next ; a != NULL ; a = a->next)
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{
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if (strcmp(a->filename, filename) == 0)
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{
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return a;
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}
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}
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if (!strstr(filename, "/tiles/"))
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{
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SDL_LogMessage(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_WARN, "No such atlas image '%s'", filename);
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}
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return NULL;
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}
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static void loadAtlasData(void)
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{
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Atlas *atlas, *a;
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int x, y, w, h;
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cJSON *root, *node;
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char *text, *filename;
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unsigned long i;
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text = readFile("data/atlas/atlas.json");
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root = cJSON_Parse(text);
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for (node = root->child ; node != NULL ; node = node->next)
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{
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filename = cJSON_GetObjectItem(node, "filename")->valuestring;
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x = cJSON_GetObjectItem(node, "x")->valueint;
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y = cJSON_GetObjectItem(node, "y")->valueint;
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w = cJSON_GetObjectItem(node, "w")->valueint;
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h = cJSON_GetObjectItem(node, "h")->valueint;
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i = hashcode(filename) % NUM_ATLAS_BUCKETS;
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a = &atlases[i];
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/* horrible bit to look for the tail */
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while (a->next)
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{
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a = a->next;
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}
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atlas = malloc(sizeof(Atlas));
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memset(atlas, 0, sizeof(Atlas));
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a->next = atlas;
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STRNCPY(atlas->filename, filename, MAX_FILENAME_LENGTH);
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atlas->rect.x = x;
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atlas->rect.y = y;
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atlas->rect.w = w;
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atlas->rect.h = h;
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}
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cJSON_Delete(root);
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free(text);
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}
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