#pragma once

#include <cstdint>
#include <optional>
#include "BlockType.hpp"
#include "../GFX/Mesh.hpp"
#include "BlockSide.hpp"
#include "../GFX/Binder.hpp"

namespace MC::World {

class Chunk {
public:
    static constexpr const uint32_t Width = 16;
    static constexpr const uint32_t Height = 64;

    Chunk(int64_t x, int64_t y)
        : m_blocks{}, m_position{(float)x * Chunk::Width, 0.0f, (float)y * Chunk::Width} {};

    void set(uint32_t x, uint32_t y, uint32_t z, BlockType type);

    Vector<3> position();
    GFX::Mesh mesh();
private:
    bool is_face_visible(uint32_t x, uint32_t y, uint32_t z, BlockSide side);

    static std::array<Vector<2>, 4> face_tex_coords(BlockType type, BlockSide side);
    static std::array<Vector<3>, 4> face_normals(BlockSide side);

    struct BlockData {
        BlockType type;
    };

    Vector<3> m_position;
    BlockData m_blocks[Chunk::Width][Chunk::Height][Chunk::Width];
};

}