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#include "defs.hpp"
#include "loader.hpp"
#include "atlas.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>
namespace Magnum::Examples {
using atlas_ptr = std::shared_ptr<atlas_texture>;
struct loader_impl final : loader_
{
const Utility::Resource shader_res{"game/shaders"};
PluginManager::Manager<Trade::AbstractImporter> importer_plugins;
Containers::Pointer<Trade::AbstractImporter> tga_importer =
importer_plugins.loadAndInstantiate("TgaImporter");
PluginManager::Manager<Trade::AbstractImageConverter> image_converter_plugins;
Containers::Pointer<Trade::AbstractImageConverter> tga_converter =
image_converter_plugins.loadAndInstantiate("TgaImageConverter");
std::unordered_map<std::string, atlas_ptr> atlas_map;
std::string shader(const Containers::StringView& filename) override;
Trade::ImageData2D tile_texture(const Containers::StringView& filename) override;
atlas_ptr tile_atlas(const Containers::StringView& filename, Vector2i size) override;
explicit loader_impl();
~loader_impl() override;
};
std::string loader_impl::shader(const Containers::StringView& filename)
{
auto ret = shader_res.getString(filename);
if (ret.isEmpty())
ABORT("can't find shader resource '%s'", filename.cbegin());
return ret;
}
atlas_ptr 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<atlas_texture>(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{};
return loader;
}
// NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
loader_& loader = make_default_loader();
} // namespace Magnum::Examples
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