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#pragma once
#include "tile.hpp"
#include <array>
#include <Corrade/Containers/ArrayViewStl.h>
#include <Magnum/Magnum.h>
#include <Magnum/Math/Vector2.h>
#include <Magnum/GL/Mesh.h>
#include <Magnum/GL/Buffer.h>
namespace Magnum::Examples {
struct tile_shader;
struct chunk;
struct wall_mesh final
{
wall_mesh();
void draw(tile_shader& shader, chunk& c);
private:
static constexpr auto COUNT = TILE_MAX_DIM*2 * TILE_MAX_DIM*2;
static constexpr auto quad_index_count = 6;
using texcoords_array = std::array<Vector2, 4>;
using position_array = std::array<Vector3, 4>;
struct vertex final {
typename texcoords_array::value_type texcoords;
typename position_array::value_type position;
};
using quad = std::array<vertex, 4>;
using vertex_array = std::array<quad, COUNT>;
using texture_array = std::array<GL::Texture2D*, COUNT>;
static void maybe_add_tile(vertex_array& data, texture_array& textures, std::size_t& pos,
tile& x, local_coords pt);
static void add_wall(vertex_array& data, texture_array& textures, std::size_t& pos,
tile_image& img, const position_array& positions);
GL::Mesh _mesh;
GL::Buffer _vertex_buffer{vertex_array{}, Magnum::GL::BufferUsage::StaticDraw},
_index_buffer{_index_data, Magnum::GL::BufferUsage::StaticDraw};
static const std::array<std::array<UnsignedShort, 6>, COUNT> _index_data;
static decltype(_index_data) make_index_array();
};
} // namespace Magnum::Examples
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