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#include "loader.hpp"
#include "tile-atlas.hpp"
#include "compat/assert.hpp"
#include <Corrade/Containers/Optional.h>
#include <Corrade/Containers/StringView.h>
#include <Corrade/PluginManager/PluginManager.h>
#include <Corrade/Utility/Resource.h>
#include <Magnum/ImageView.h>
#include <Magnum/Trade/AbstractImporter.h>
#include <Magnum/Trade/ImageData.h>
#include <Magnum/Trade/AbstractImageConverter.h>
#include <unordered_map>
#include <utility>
#include <optional>
namespace Magnum::Examples {
struct loader_impl final : loader_
{
std::optional<Utility::Resource> shader_res;
PluginManager::Manager<Trade::AbstractImporter> importer_plugins;
Containers::Pointer<Trade::AbstractImporter> tga_importer =
importer_plugins.loadAndInstantiate("AnyImageImporter");
PluginManager::Manager<Trade::AbstractImageConverter> image_converter_plugins;
Containers::Pointer<Trade::AbstractImageConverter> tga_converter =
image_converter_plugins.loadAndInstantiate("AnyImageConverter");
std::unordered_map<std::string, std::shared_ptr<struct tile_atlas>> atlas_map;
std::string shader(const Containers::StringView& filename) override;
Trade::ImageData2D tile_texture(const Containers::StringView& filename) override;
std::shared_ptr<struct tile_atlas> tile_atlas(const Containers::StringView& filename, Vector2i size) override;
explicit loader_impl();
~loader_impl() override;
};
std::string loader_impl::shader(const Containers::StringView& filename)
{
if (!shader_res)
shader_res = std::make_optional<Utility::Resource>("game/shaders");
auto ret = shader_res->getString(filename);
if (ret.isEmpty())
ABORT("can't find shader resource '%s'", filename.cbegin());
return ret;
}
std::shared_ptr<tile_atlas> loader_impl::tile_atlas(const Containers::StringView& name, Vector2i size)
{
auto it = atlas_map.find(name);
if (it != atlas_map.end())
return it->second;
auto image = tile_texture(name);
auto atlas = std::make_shared<struct tile_atlas>(name, image, size);
atlas_map[name] = atlas;
return atlas;
}
Trade::ImageData2D loader_impl::tile_texture(const Containers::StringView& filename)
{
if(!tga_importer || !tga_importer->openFile(filename))
ABORT("can't open tile image '%s'", filename.cbegin());
auto img = tga_importer->image2D(0);
if (!img)
ABORT("can't allocate tile image for '%s'", filename.cbegin());
auto ret = std::move(*img);
return ret;
}
void loader_::destroy()
{
loader.~loader_();
new (&loader) loader_impl();
}
loader_impl::loader_impl() = default;
loader_impl::~loader_impl() = default;
static loader_& make_default_loader()
{
static loader_impl loader_singleton{};
return loader_singleton;
}
// NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
loader_& loader = make_default_loader();
} // namespace Magnum::Examples
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