ERR_error WPR_init_sdl(WPR_init_sdl_data init,MEM_heap_manager* manager){
WPR_sdl_data* data = MEM_get_item_m_p(WPR_sdl_data,MEM_get_heap_m(manager,MEM_LOC_WPR_SDL_DATA),0);
int i,j;
if(SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER) < 0){
SDL_LogError(SDL_LOG_CATEGORY_ERROR,"Couldn't init SDL: %s",SDL_GetError());
return ERR_BAD;
}
data->window = SDL_CreateWindow(init.title,SDL_WINDOWPOS_UNDEFINED,SDL_WINDOWPOS_UNDEFINED,init.screen_width,init.screen_height,SDL_WINDOW_SHOWN);
if(!data->window){
SDL_LogError(SDL_LOG_CATEGORY_ERROR,"Couldn't create a window: %s",SDL_GetError());
return ERR_BAD;
}
data->renderer = SDL_CreateRenderer(data->window,-1,SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
if(!data->renderer){
SDL_LogError(SDL_LOG_CATEGORY_ERROR,"Couldn't create a renderer: %s",SDL_GetError());
return ERR_BAD;
}
ERR_ASSERT(WPR_get_status() == WPR_READY,"SDL wrapper not inited");
int result = IMG_Init(IMG_INIT_PNG);
ERR_ASSERT((result == IMG_INIT_PNG),"Couldn't init SDL_image: %s",IMG_GetError());
data->screen_width = init.screen_width;
data->screen_height = init.screen_height;
data->unit_x = init.screen_width/IDEAL_WIDTH;
data->unit_y = -init.screen_height/IDEAL_HEIGHT;
data->scale_x = data->unit_x / (IDEAL_UNIT_X);
data->scale_y = -data->unit_y / (IDEAL_UNIT_Y);
data->offset_x = (IDEAL_WIDTH/2);
data->offset_y = -(IDEAL_HEIGHT/2);
data->running = 1;
data->delta_time = 1;
for(i=0;i<DELTA_SAMPLE_SIZE;i++){
data->delta_time_data[i] = 1;
}
data->delta_collection_count = 0;
data->current_fps = 0;
data->prev_tick = SDL_GetTicks();
data->textures = MEM_get_heap_m(manager,MEM_LOC_TEXTURE_DATA);
WPR_STATUS = WPR_READY;
return ERR_GOOD;
}
ERR_error WPR_shutdown(WPR_sdl_data* data){
ERR_ASSERT(AST_get_status() == AST_CLOSED,"assets not closed yet");
SDL_DestroyRenderer(data->renderer);
SDL_DestroyWindow(data->window);
data->renderer = NULL;
data->window = NULL;
IMG_Quit();
SDL_Quit();
WPR_STATUS = WPR_CLOSED;
return ERR_GOOD;
}
ERR_error AST_init(MEM_heap_manager* manager){
ERR_ASSERT(WPR_get_status() == WPR_READY,"sdl_wrapper not ready");
MEM_handle handle = MEM_create_handle(MEM_LOC_AST_DATA,0);
AST_data* data = MEM_get_item_p(AST_data,handle,manager);
data->audio_data = MEM_get_heap_m(manager,MEM_LOC_AUDIO_DATA);
data->texture_data = MEM_get_heap_m(manager,MEM_LOC_TEXTURE_DATA);
data->sdl_data = MEM_get_item_m_p(WPR_sdl_data,MEM_get_heap_m(manager,MEM_LOC_WPR_SDL_DATA),0);
find_all_and_load_textures(data);
AST_STATUS = AST_READY;
return ERR_BAD;
}
/*
* Source: http://zarb.org/~gc/html/libpng.html
*/
int save_image_png(image_t *image, char* file_name) {
int ret = 0;
if (image == NULL || file_name == NULL)
goto error;
int width = image->width;
int height = image->height;
/* create file */
FILE *fp = fopen(file_name, "wb");
ERR_ASSERT(fp, "Failed to open output file");
/* initialize stuff */
png_structp png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING,
NULL, NULL, NULL);
ERR_ASSERT(png_ptr, "[write_png_file] png_create_write_struct failed");
png_infop info_ptr = png_create_info_struct(png_ptr);
ERR_ASSERT(info_ptr, "[write_png_file] png_create_info_struct failed");
ERR_ASSERT(!setjmp(png_jmpbuf(png_ptr)),
"[write_png_file] Error during init_io");
png_init_io(png_ptr, fp);
/* write header */
ERR_ASSERT(!setjmp(png_jmpbuf(png_ptr)),
"[write_png_file] Error during writing header");
png_set_IHDR(png_ptr, info_ptr, width, height, 8, PNG_COLOR_TYPE_RGB,
PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_BASE,
PNG_FILTER_TYPE_BASE);
png_write_info(png_ptr, info_ptr);
/* write bytes */
ERR_ASSERT(!setjmp(png_jmpbuf(png_ptr)),
"[write_png_file] Error during writing bytes");
png_write_image(png_ptr, image->rows);
/* end write */
ERR_ASSERT(!setjmp(png_jmpbuf(png_ptr)),
"[write_png_file] Error during end of write");
png_write_end(png_ptr, NULL);
fclose(fp);
done: return ret;
error: ret = -1;
goto done;
}
LIB_HANDLE AST_lib_open(const char* str){
LIB_HANDLE handle = dlopen(str,RTLD_LAZY);
ERR_ASSERT(handle != NULL,"could not open lib at %s",str);
return handle;
}