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#pragma once
#include "compat/defs.hpp"
#include "scenery.hpp"
#include "serialize/anim.hpp"
#include <array>
#include <string>
#include <Magnum/Math/Vector2.h>
#include <Magnum/ImageView.h>
#include <Magnum/GL/Texture.h>
namespace floormat {
struct anim_atlas final
{
using anim_info = Serialize::anim;
using anim_group = Serialize::anim_group;
using anim_frame = Serialize::anim_frame;
using texcoords = std::array<Vector2, 4>;
using quad = std::array<Vector3, 4>;
anim_atlas() noexcept;
anim_atlas(StringView name, const ImageView2D& tex, anim_info 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_info& 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) const noexcept;
texcoords texcoords_for_frame(const anim_frame& frame) const noexcept;
quad frame_quad(const Vector3& center, rotation r, std::size_t frame) const noexcept;
static quad frame_quad(const Vector3& center, const anim_frame& frame) noexcept;
fm_DECLARE_DELETED_COPY_ASSIGNMENT(anim_atlas);
private:
GL::Texture2D _tex;
std::string _name;
anim_info _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 Serialize::anim& anim) noexcept;
static std::uint8_t rotation_to_index(const anim_info& a, rotation r) noexcept;
};
} // namespace floormat
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