X-Git-Url: http://git.localhorst.tv/?a=blobdiff_plain;f=src%2Fworld%2FChunkIndex.hpp;h=97956e9c4d47b434a6f6981bb9908af76724b761;hb=9da6ac5e93d79e79658a95d5f6efe42146873583;hp=6749737acb8f6966101aad7ba92a78f89d81ff35;hpb=13e676a6e49128ebc6c63b8dd08bef51d360e8e9;p=blank.git

diff --git a/src/world/ChunkIndex.hpp b/src/world/ChunkIndex.hpp
index 6749737..97956e9 100644
--- a/src/world/ChunkIndex.hpp
+++ b/src/world/ChunkIndex.hpp
@@ -1,7 +1,9 @@
 #ifndef BLANK_WORLD_CHUNKINDEX_HPP_
 #define BLANK_WORLD_CHUNKINDEX_HPP_
 
+#include "BlockLookup.hpp"
 #include "Chunk.hpp"
+#include "../rand/GaloisLFSR.hpp"
 
 #include <vector>
 
@@ -21,8 +23,14 @@ public:
 
 public:
 	bool InRange(const Chunk::Pos &) const noexcept;
+	bool IsBorder(const Chunk::Pos &) const noexcept;
+	int Distance(const Chunk::Pos &) const noexcept;
+
+	bool HasAllSurrounding(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;
@@ -30,6 +38,18 @@ public:
 	Chunk *operator [](int i) noexcept { return chunks[i]; }
 	const Chunk *operator [](int i) const noexcept { return chunks[i]; }
 
+	Chunk *RandomChunk(GaloisLFSR &rand) {
+		return rand.From(chunks);
+	}
+	BlockLookup RandomBlock(GaloisLFSR &rand) {
+		return BlockLookup(RandomChunk(rand), Chunk::ToPos(rand.Next<unsigned int>() % Chunk::size));
+	}
+
+	int Extent() const noexcept { return extent; }
+
+	Chunk::Pos CoordsBegin() const noexcept { return base - Chunk::Pos(extent); }
+	Chunk::Pos CoordsEnd() const noexcept { return base + Chunk::Pos(extent + 1); }
+
 	void Register(Chunk &) noexcept;
 
 	int TotalChunks() const noexcept { return total_length; }