Add whatever I was working on for the last month

1 files changed, 38 insertions, 0 deletions

diff --git a/game/client/chunk_quad.hh b/game/client/chunk_quad.hh
new file mode 100644
index 0000000..93fe904
--- /dev/null
+++ b/game/client/chunk_quad.hh
@@ -0,0 +1,38 @@
+#ifndef CLIENT_CHUNK_QUAD_HH
+#define CLIENT_CHUNK_QUAD_HH 1
+#pragma once
+
+#include "core/constexpr.hh"
+
+#include "shared/voxel_registry.hh"
+
+// [0] XXXXXXXXYYYYYYYYZZZZZZZZWWWWHHHH
+// [1] FFFFTTTTTTTTTTTAAAAA------------
+using ChunkQuad = std::array<std::uint32_t, 2>;
+
+constexpr inline static ChunkQuad make_chunk_quad(const glm::fvec3 &position, const glm::fvec2 &size, voxel_facing facing, std::size_t texture, std::size_t frames)
+{
+    ChunkQuad result = {};
+    result[0] = 0x00000000;
+    result[1] = 0x00000000;
+
+    // [0] XXXXXXXXYYYYYYYYZZZZZZZZ--------
+    result[0] |= (0x000000FFU & static_cast<std::uint32_t>(position.x * 16.0f)) << 24U;
+    result[0] |= (0x000000FFU & static_cast<std::uint32_t>(position.y * 16.0f)) << 16U;
+    result[0] |= (0x000000FFU & static_cast<std::uint32_t>(position.z * 16.0f)) << 8U;
+
+    // [0] ------------------------WWWWHHHH
+    result[0] |= (0x0000000FU & static_cast<std::uint32_t>(size.x * 16.0f - 1.0f)) << 4U;
+    result[0] |= (0x0000000FU & static_cast<std::uint32_t>(size.y * 16.0f - 1.0f));
+
+    // [1] FFFF----------------------------
+    result[1] |= (0x0000000FU & static_cast<std::uint32_t>(facing)) << 28U;
+
+    // [1] ----TTTTTTTTTTTAAAAA------------
+    result[1] |= (0x000007FFU & static_cast<std::uint32_t>(texture)) << 17U;
+    result[1] |= (0x0000001FU & static_cast<std::uint32_t>(frames)) << 12U;
+
+    return result;
+}
+
+#endif /* CLIENT_CHUNK_QUAD_HH  */