diff options
Diffstat (limited to 'src/World/Generation/ChunkMeshing.cpp')
| -rw-r--r-- | src/World/Generation/ChunkMeshing.cpp | 35 |
1 files changed, 23 insertions, 12 deletions
diff --git a/src/World/Generation/ChunkMeshing.cpp b/src/World/Generation/ChunkMeshing.cpp index 8944c53..130bbad 100644 --- a/src/World/Generation/ChunkMeshing.cpp +++ b/src/World/Generation/ChunkMeshing.cpp @@ -118,44 +118,55 @@ std::array<Vector<3, F32>, 4> face_normals(BlockSide side) { return {normal, normal, normal, normal}; } -Bool is_face_visible(Chunk& chunk, const ChunkMeshing::ChunkNeighbors& neighbors, U32 x, U32 y, U32 z, BlockSide side) { std::array<F32, 4> face_ao_values(Chunk& chunk, const ChunkNeighbors& neighbors, U32 x, U32 y, U32 z, BlockSide side) { - std::array<Vector<3, I32>, 4> offsets{}; + std::array<Vector<3, I32>, 8> offsets{}; + // Given a block position, these offsets can be added to it to get the 8 blocks necessary to calculate AO. + // There are 4 corners and 4 sides, corners are visually distinguished by the lack of spaces and + // but you can recognize them by the fact that they have no 0 offsets. + // Note: Is there a way to compute these? I tried but I couldn't... If the vertex windings ever change again I don't want to hardcode these... + auto nowhere = Vector<3, I32>::max(); switch (side) { case BlockSide::Front: - offsets = {{{0, 1, 1}, {-1, 0, 1}, {0, -1, 1}, {1, 0, 1}}}; // works! + offsets = {{{0, 1, 1}, {-1,1,1}, {-1, 0, 1}, {-1,-1,1}, {0, -1, 1}, {1,-1,1}, {1, 0, 1}, {1,1,1}}}; break; case BlockSide::Back: - offsets = {{{-1, 0, -1}, {0, 1, -1}, {1, 0, -1}, {0, -1, -1}}}; // works! + offsets = {{{-1, 0, -1}, {-1,1,-1}, {0, 1, -1}, {1,1,-1}, {1, 0, -1}, {1,-1,-1}, {0, -1, -1}, {-1,-1,-1}}}; break; case BlockSide::Top: - offsets = {{{-1, 1, 0}, {0, 1, 1}, {1, 1, 0}, {0, 1, -1}}}; + offsets = {{{-1, 1, 0}, {-1,1,1}, {0, 1, 1}, {1,1,1}, {1, 1, 0}, {1,1,-1}, {0, 1, -1}, {-1,1,-1}}}; break; case BlockSide::Bottom: - offsets = {{{0, -1, 1}, {-1, -1, 0}, {0, -1, -1}, {1, -1, 0}}}; + offsets = {{{0, -1, 1}, {-1,-1,1}, {-1, -1, 0}, {-1,-1,-1}, {0, -1, -1}, {1,-1,-1}, {1, -1, 0}, {1,-1,1}}}; break; case BlockSide::Right: - offsets = {{{1, 0, -1}, {1, 1, 0}, {1, 0, 1}, {1, -1, 0}}}; + offsets = {{{1, 0, -1}, {1,1,-1}, {1, 1, 0}, {1,1,1}, {1, 0, 1}, {1,-1,1}, {1, -1, 0}, {1,-1,-1}}}; break; case BlockSide::Left: - offsets = {{{-1, 1, 0}, {-1, 0, -1}, {-1, -1, 0}, {-1, 0, 1}}}; + offsets = {{{-1, 1, 0}, {-1,1,-1}, {-1, 0, -1}, {-1,-1,-1}, {-1, -1, 0}, {-1,-1,1}, {-1, 0, 1}, {-1,1,1}}}; break; } - std::array<F32, 4> vertex_ao{}; + UInt offset_index = 0; for (UInt vertex = 0; vertex < 4; vertex++) { - auto a = offsets[vertex]; - auto b = offsets[(vertex + 1) % 4]; + auto a = offsets[offset_index]; + auto b = offsets[++offset_index]; // corner + auto c = offsets[++offset_index % 8]; auto block_a = get_block_wrapping(chunk, neighbors, {x + a.x(), y + a.y(), z + a.z()}); auto block_b = get_block_wrapping(chunk, neighbors, {x + b.x(), y + b.y(), z + b.z()}); + auto block_c = get_block_wrapping(chunk, neighbors, {x + c.x(), y + c.y(), z + c.z()}); F32 occlusion_a = block_a.empty() ? 0 : 1; F32 occlusion_b = block_b.empty() ? 0 : 1; + F32 occlusion_c = block_c.empty() ? 0 : 1; - vertex_ao[vertex] = (occlusion_a + occlusion_b) / 2; + if (occlusion_a + occlusion_c == 2.0f) { + vertex_ao[vertex] = 1.0f; + } else { + vertex_ao[vertex] = (occlusion_a + occlusion_b + occlusion_c) / 3; + } } return vertex_ao; |