1 files changed, 43 insertions, 0 deletions
diff --git a/draw/wall-mesh.hpp b/draw/wall-mesh.hpp
new file mode 100644
index 00000000..4a4e9615
--- /dev/null
+++ b/draw/wall-mesh.hpp
@@ -0,0 +1,43 @@
+#pragma once
+
+#include "tile.hpp"
+#include <array>
+#include <Corrade/Containers/ArrayViewStl.h>
+#include <Magnum/Math/Vector2.h>
+#include <Magnum/Math/Vector3.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 COUNT1 = TILE_MAX_DIM*2, COUNT = COUNT1 * COUNT1;
+
+    struct vertex final {
+        Vector2 texcoords;
+    };
+
+    using quad = std::array<vertex, 4>;
+    using vertex_array = std::array<quad, COUNT>;
+    using texture_array = std::array<GL::RectangleTexture*, COUNT>;
+
+    static void maybe_add_tile(vertex_array& data, texture_array& textures, tile& x, std::size_t pos);
+    static void add_wall(vertex_array& data, texture_array& textures, tile_image& img, std::size_t pos);
+
+    GL::Mesh _mesh;
+    GL::Buffer _vertex_buffer{vertex_array{}, Magnum::GL::BufferUsage::DynamicDraw},
+               _index_buffer{make_index_array()},
+                _positions_buffer{make_position_array()};
+    static std::array<std::array<UnsignedShort, 6>, COUNT> make_index_array();
+    static std::array<std::array<Vector3, 4>, COUNT> make_position_array();
+};
+
+} // namespace Magnum::Examples