BackgroundID BackgroundManager::new_background_from_file(const unicode& filename, float scroll_x, float scroll_y) {
BackgroundID result = new_background();
try {
background(result)->set_texture(window_->new_texture_from_file(filename));
background(result)->set_horizontal_scroll_rate(scroll_x);
background(result)->set_vertical_scroll_rate(scroll_y);
} catch(...) {
delete_background(result);
throw;
}
return result;
}
BackgroundManager::~BackgroundManager() {
auto objects = BackgroundManager::__objects();
for(auto background_pair: objects) {
delete_background(background_pair.first);
}
}
