X-Git-Url: http://git.localhorst.tv/?a=blobdiff_plain;f=src%2Fworld%2FChunkIndex.hpp;fp=src%2Fworld%2FChunkIndex.hpp;h=6749737acb8f6966101aad7ba92a78f89d81ff35;hb=13e676a6e49128ebc6c63b8dd08bef51d360e8e9;hp=0000000000000000000000000000000000000000;hpb=43820582217f7e4b707d98f2e69d969eb77fc7c3;p=blank.git

diff --git a/src/world/ChunkIndex.hpp b/src/world/ChunkIndex.hpp
new file mode 100644
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