add floor mesh to struct chunk

1 files changed, 6 insertions, 45 deletions

diff --git a/draw/floor.cpp b/draw/floor.cpp
index 861336c7..ee7b4014 100644
--- a/draw/floor.cpp
+++ b/draw/floor.cpp
@@ -11,42 +11,20 @@ constexpr auto quad_index_count = 6;
 
 floor_mesh::floor_mesh()
 {
-    _mesh.setCount((int)(quad_index_count * TILE_COUNT))
-         .addVertexBuffer(_positions_buffer, 0, tile_shader::Position{})
-         .addVertexBuffer(_vertex_buffer, 0, tile_shader::TextureCoordinates{})
-         .setIndexBuffer(_index_buffer, 0, GL::MeshIndexType::UnsignedShort);
-}
-
-void floor_mesh::set_tile(quad_data& data, tile_ref& x)
-{
-    if (auto ground = x.ground(); ground)
-    {
-        auto texcoords = ground.atlas->texcoords_for_id(ground.variant);
-        for (size_t i = 0; i < 4; i++)
-            data[i] = { texcoords[i] };
-    }
-    else
-        for (size_t i = 0; i < 4; i++)
-            data[i] = {};
 }
 
 void floor_mesh::draw(tile_shader& shader, chunk& c)
 {
-    //_vertex_buffer.setData({nullptr, sizeof(quad_data) * TILE_COUNT}, Magnum::GL::BufferUsage::DynamicDraw); // orphan the buffer
-    std::array<quad_data, TILE_COUNT> data;
-    for (auto [x, idx, pt] : c) {
-        set_tile(data[idx], x);
-    }
-    _vertex_buffer.setSubData(0, data);
-    Magnum::GL::MeshView mesh{_mesh};
+    auto [mesh_, ids] = c.ensure_ground_mesh();
 
     tile_atlas* last_atlas = nullptr;
     std::size_t last_pos = 0;
+    GL::MeshView mesh{mesh_};
 
     const auto do_draw = [&](std::size_t i, tile_atlas* atlas) {
         if (atlas == last_atlas)
             return;
-        if (auto len = i - last_pos; last_atlas != nullptr && len > 0)
+        if (auto len = i - last_pos; last_atlas && len > 0)
         {
             last_atlas->texture().bind(0);
             mesh.setCount((int)(quad_index_count * len));
@@ -57,27 +35,10 @@ void floor_mesh::draw(tile_shader& shader, chunk& c)
         last_pos = i;
     };
 
-    for (auto [x, i, pt] : c)
-        do_draw(i, x.ground_atlas().get());
+    for (std::size_t k = 0; k < TILE_COUNT; k++)
+        if (auto* atlas = c.ground_atlas_at(ids[k]))
+            do_draw(k, atlas);
     do_draw(TILE_COUNT, nullptr);
 }
 
-std::array<std::array<UnsignedShort, 6>, TILE_COUNT> floor_mesh::make_index_array()
-{
-    // NOLINTNEXTLINE(cppcoreguidelines-pro-type-member-init)
-    std::array<std::array<UnsignedShort, quad_index_count>, TILE_COUNT> array;
-    for (std::size_t i = 0; i < std::size(array); i++)
-        array[i] = tile_atlas::indices(i);
-    return array;
-}
-
-std::array<std::array<Vector3, 4>, TILE_COUNT> floor_mesh::make_position_array()
-{
-    std::array<std::array<Vector3, 4>, TILE_COUNT> array;
-    for (std::uint8_t j = 0, k = 0; j < TILE_MAX_DIM; j++)
-        for (std::uint8_t i = 0; i < TILE_MAX_DIM; i++, k++)
-            array[k] = { tile_atlas::floor_quad(Vector3(i, j, 0) * TILE_SIZE, TILE_SIZE2) };
-    return array;
-}
-
 } // namespace floormat