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#pragma once
#include "compat/defs.hpp"
#include "scenery.hpp"
#include "anim.hpp"
#include <array>
#include <Corrade/Containers/BitArray.h>
#include <Corrade/Containers/BitArrayView.h>
#include <Corrade/Containers/String.h>
#include <Magnum/Math/Vector2.h>
#include <Magnum/ImageView.h>
#include <Magnum/GL/Texture.h>
namespace floormat {
struct anim_atlas final
{
using texcoords = std::array<Vector2, 4>;
using quad = std::array<Vector3, 4>;
anim_atlas() noexcept;
anim_atlas(StringView name, const ImageView2D& tex, anim_def info) noexcept;
~anim_atlas() noexcept;
anim_atlas(anim_atlas&&) noexcept;
anim_atlas& operator=(anim_atlas&&) noexcept;
StringView name() const noexcept;
GL::Texture2D& texture() noexcept;
const anim_def& info() const noexcept;
const anim_group& group(rotation r) const noexcept;
const anim_frame& frame(rotation r, std::size_t frame) const noexcept;
texcoords texcoords_for_frame(rotation r, std::size_t frame, bool mirror) const noexcept;
quad frame_quad(const Vector3& center, rotation r, std::size_t frame) const noexcept;
BitArrayView bitmask() const;
[[nodiscard]] rotation next_rotation_from(rotation r) const noexcept;
[[nodiscard]] rotation prev_rotation_from(rotation r) const noexcept;
[[nodiscard]] bool check_rotation(rotation r) const noexcept;
rotation first_rotation() const noexcept;
fm_DECLARE_DELETED_COPY_ASSIGNMENT(anim_atlas);
private:
GL::Texture2D _tex;
String _name;
BitArray _bitmask;
anim_def _info;
std::array<std::uint8_t, (std::size_t)rotation_COUNT> _group_indices = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
};
static decltype(_group_indices) make_group_indices(const anim_def& anim) noexcept;
static std::uint8_t rotation_to_index(StringView name) noexcept;
static BitArray make_bitmask(const ImageView2D& tex);
};
} // namespace floormat
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