164 lines
3.4 KiB
C
164 lines
3.4 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 AtlasImage atlases[NUM_ATLAS_BUCKETS];
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static SDL_Texture *atlasTexture;
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void initAtlas(void)
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{
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memset(&atlases, 0, sizeof(AtlasImage) * NUM_ATLAS_BUCKETS);
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atlasTexture = getTexture("gfx/atlas/atlas.png");
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loadAtlasData();
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}
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void setAtlasColor(int r, int g, int b, int a)
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{
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SDL_SetTextureColorMod(atlasTexture, r, g, b);
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SDL_SetTextureAlphaMod(atlasTexture, a);
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}
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AtlasImage *getAtlasImage(char *filename)
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{
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AtlasImage *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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SDL_LogMessage(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_CRITICAL, "No such atlas image '%s'", filename);
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exit(1);
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return NULL;
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}
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char **getAtlasFileList(char *dir, int *count)
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{
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AtlasImage *a;
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int i, bucket;
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char **filenames;
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i = 0;
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filenames = NULL;
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for (bucket = 0 ; bucket < NUM_ATLAS_BUCKETS ; bucket++)
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{
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for (a = atlases[bucket].next ; a != NULL ; a = a->next)
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{
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if (strncmp(dir, a->filename, strlen(dir)) == 0)
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{
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i++;
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}
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}
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}
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if (i > 0)
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{
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filenames = malloc(sizeof(char*) * i);
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memset(filenames, 0, sizeof(char*) * i);
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i = 0;
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for (bucket = 0 ; bucket < NUM_ATLAS_BUCKETS ; bucket++)
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{
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for (a = atlases[bucket].next ; a != NULL ; a = a->next)
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{
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if (strncmp(dir, a->filename, strlen(dir)) == 0)
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{
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filenames[i] = malloc(sizeof(char) * MAX_FILENAME_LENGTH);
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STRNCPY(filenames[i], a->filename, MAX_FILENAME_LENGTH);
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i++;
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}
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}
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}
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}
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*count = i;
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if (filenames)
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{
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qsort(filenames, i, sizeof(char*), stringComparator);
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}
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return filenames;
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}
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static void loadAtlasData(void)
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{
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AtlasImage *atlasImage, *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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atlasImage = malloc(sizeof(AtlasImage));
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memset(atlasImage, 0, sizeof(AtlasImage));
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a->next = atlasImage;
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STRNCPY(atlasImage->filename, filename, MAX_FILENAME_LENGTH);
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atlasImage->rect.x = x;
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atlasImage->rect.y = y;
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atlasImage->rect.w = w;
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atlasImage->rect.h = h;
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atlasImage->texture = atlasTexture;
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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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