breakhack/src/texturecache.c

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/*
* BreakHack - A dungeone crawler RPG
* Copyright (C) 2018 Linus Probert <linus.probert@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <SDL.h>
#include <assert.h>
#include "texturecache.h"
#include "hashtable.h"
#include "defines.h"
#include "util.h"
#include "timer.h"
static Hashtable *textures = NULL;
static SDL_Renderer *renderer = NULL;
typedef struct TexureContainer {
Texture *texture;
} TextureContainer;
static void
texturecache_texture_container_destroy(TextureContainer *);
void
texturecache_init(SDL_Renderer *rend)
{
textures = ht_create(50);
renderer = rend;
}
Texture*
texturecache_add(const char *path)
{
TextureContainer *tc = ht_get(textures, path);
if (!tc) {
tc = ec_malloc(sizeof(TextureContainer));
tc->texture = texture_create();
texture_load_from_file(tc->texture, path, renderer);
ht_set(textures, path, tc);
debug("Cached texture: %s", path);
} else {
debug("Retrieved cached texture: %s", path);
}
return tc->texture;
}
Texture*
texturecache_get(const char *path)
{
TextureContainer *tc = ht_get(textures, path);
if (!tc)
fatal("Texture not loaded: %s", path);
return tc->texture;
}
bool
texturecache_remove(Texture **texture)
{
TextureContainer *tc = ht_get(textures, (*texture)->path);
if (!tc)
return false;
assert(tc->texture == *texture);
texturecache_texture_container_destroy(tc);
*texture = NULL;
return true;
}
static void
texturecache_texture_container_destroy(TextureContainer *tc)
{
texture_destroy(tc->texture);
free(tc);
}
void
texturecache_close(void)
{
ht_destroy_custom(textures, (void(*)(void*)) texturecache_texture_container_destroy);
}