split chunk stuff

[blank.git] / src / world / ChunkIndex.hpp

diff --git a/src/world/ChunkIndex.hpp b/src/world/ChunkIndex.hpp
new file mode 100644 (file)
index 0000000..6749737
--- /dev/null
+++ b/src/world/ChunkIndex.hpp
@@ -0,0 +1,70 @@
+#ifndef BLANK_WORLD_CHUNKINDEX_HPP_
+#define BLANK_WORLD_CHUNKINDEX_HPP_
+
+#include "Chunk.hpp"
+
+#include <vector>
+
+
+namespace blank {
+
+class ChunkStore;
+
+class ChunkIndex {
+
+public:
+       ChunkIndex(ChunkStore &, const Chunk::Pos &base, int extent);
+       ~ChunkIndex();
+
+       ChunkIndex(const ChunkIndex &) = delete;
+       ChunkIndex &operator =(const ChunkIndex &) = delete;
+
+public:
+       bool InRange(const Chunk::Pos &) const noexcept;
+       int IndexOf(const Chunk::Pos &) const noexcept;
+       Chunk::Pos PositionOf(int) const noexcept;
+       /// returns nullptr if given position is out of range or the chunk
+       /// is not loaded, so also works as a "has" function
+       Chunk *Get(const Chunk::Pos &) noexcept;
+       const Chunk *Get(const Chunk::Pos &) const noexcept;
+       Chunk *operator [](int i) noexcept { return chunks[i]; }
+       const Chunk *operator [](int i) const noexcept { return chunks[i]; }
+
+       void Register(Chunk &) noexcept;
+
+       int TotalChunks() const noexcept { return total_length; }
+       int IndexedChunks() const noexcept { return total_indexed; }
+       int MissingChunks() const noexcept { return total_length - total_indexed; }
+
+       Chunk::Pos NextMissing() noexcept;
+
+       const Chunk::Pos &Base() const noexcept { return base; }
+       void Rebase(const Chunk::Pos &);
+
+private:
+       int GetCol(int) const noexcept;
+
+       void Shift(Block::Face);
+
+       void Clear() noexcept;
+       void Scan() noexcept;
+
+       void Set(int index, Chunk &) noexcept;
+       void Unset(int index) noexcept;
+
+private:
+       ChunkStore &store;
+       Chunk::Pos base;
+       int extent;
+       int side_length;
+       int total_length;
+       int total_indexed;
+       int last_missing;
+       glm::ivec3 stride;
+       std::vector<Chunk *> chunks;
+
+};
+
+}
+
+#endif