X-Git-Url: http://git.localhorst.tv/?a=blobdiff_plain;f=src%2Fchunk.hpp;h=06dc98bab34075ba0234103a572f1f17b55609b9;hb=35c09fc00094a3d390732fd533b2bd03413d90c7;hp=ae773657ad3a6925f20556c7b922bf5428bde770;hpb=1b022dd17364c9e3344afd86572f2ead14973cde;p=blank.git

diff --git a/src/chunk.hpp b/src/chunk.hpp
index ae77365..06dc98b 100644
--- a/src/chunk.hpp
+++ b/src/chunk.hpp
@@ -32,14 +32,20 @@ public:
 
 	static AABB Bounds() { return AABB{ { 0, 0, 0 }, Extent() }; }
 
-	static constexpr bool InBounds(const glm::vec3 &pos) {
+	static constexpr bool InBounds(const Block::Pos &pos) {
 		return
 			pos.x >= 0 && pos.x < Width() &&
 			pos.y >= 0 && pos.y < Height() &&
 			pos.z >= 0 && pos.z < Depth();
 	}
-	static constexpr int ToIndex(const glm::vec3 &pos) {
-		return int(pos.x) + int(pos.y) * Width() + int(pos.z) * Width() * Height();
+	static constexpr bool InBounds(const Pos &pos) {
+		return
+			pos.x >= 0 && pos.x < Width() &&
+			pos.y >= 0 && pos.y < Height() &&
+			pos.z >= 0 && pos.z < Depth();
+	}
+	static constexpr int ToIndex(const Pos &pos) {
+		return pos.x + pos.y * Width() + pos.z * Width() * Height();
 	}
 	static constexpr bool InBounds(int idx) {
 		return idx >= 0 && idx < Size();
@@ -51,6 +57,13 @@ public:
 			0.5f + (idx / (Width() * Height()))
 		);
 	}
+	static Pos ToPos(int idx) {
+		return Pos(
+			(idx % Width()),
+			((idx / Width()) % Height()),
+			(idx / (Width() * Height()))
+		);
+	}
 	glm::mat4 ToTransform(int idx) const;
 
 	static constexpr bool IsBorder(int idx) {
@@ -63,19 +76,43 @@ public:
 			(idx / Width()) % Height() == Height() - 1;    // high Y plane
 	}
 
-	// check if block at given index is completely enclosed (and therefore invisible)
-	bool Obstructed(int idx) const;
+	bool IsSurface(int index) const { return IsSurface(ToPos(index)); }
+	bool IsSurface(const Block::Pos &pos) const { return IsSurface(Pos(pos)); }
+	bool IsSurface(const Pos &pos) const;
+
+	void SetNeighbor(Chunk &);
+	bool HasNeighbor(Block::Face f) const { return neighbor[f]; }
+	Chunk &GetNeighbor(Block::Face f) { return *neighbor[f]; }
+	const Chunk &GetNeighbor(Block::Face f) const { return *neighbor[f]; }
+	void ClearNeighbors();
+	void Unlink();
+	void Relink();
+
+	// check which faces of a block at given index are obstructed (and therefore invisible)
+	Block::FaceSet Obstructed(int idx) const;
 
-	void Allocate();
 	void Invalidate() { dirty = true; }
 
-	Block &BlockAt(int index) { return blocks[index]; }
+	void SetBlock(int index, const Block &);
+	void SetBlock(const Block::Pos &pos, const Block &block) { SetBlock(ToIndex(pos), block); }
+	void SetBlock(const Pos &pos, const Block &block) { SetBlock(ToIndex(pos), block); }
+
 	const Block &BlockAt(int index) const { return blocks[index]; }
-	Block &BlockAt(const Block::Pos &pos) { return BlockAt(ToIndex(pos)); }
 	const Block &BlockAt(const Block::Pos &pos) const { return BlockAt(ToIndex(pos)); }
+	const Block &BlockAt(const Pos &pos) const { return BlockAt(ToIndex(pos)); }
 
 	const BlockType &Type(const Block &b) const { return *types->Get(b.type); }
 
+	void SetLight(int index, int level);
+	void SetLight(const Pos &pos, int level) { SetLight(ToIndex(pos), level); }
+	void SetLight(const Block::Pos &pos, int level) { SetLight(ToIndex(pos), level); }
+
+	int GetLight(int index) const;
+	int GetLight(const Pos &pos) const { return GetLight(ToIndex(pos)); }
+	int GetLight(const Block::Pos &pos) const { return GetLight(ToIndex(pos)); }
+
+	float GetVertexLight(int index, const BlockModel::Position &, const Model::Normal &) const;
+
 	bool Intersection(
 		const Ray &ray,
 		const glm::mat4 &M,
@@ -103,22 +140,56 @@ private:
 
 private:
 	const BlockTypeRegistry *types;
-	std::vector<Block> blocks;
-	Model model;
+	Chunk *neighbor[Block::FACE_COUNT];
+	Block blocks[16 * 16 * 16];
+	unsigned char light[16 * 16 * 16];
+	BlockModel model;
 	Pos position;
 	bool dirty;
 
 };
 
 
+class BlockLookup {
+
+public:
+	// resolve chunk/position from oob coordinates
+	BlockLookup(Chunk *c, const Chunk::Pos &p);
+
+	// resolve chunk/position from ib coordinates and direction
+	BlockLookup(Chunk *c, const Chunk::Pos &p, Block::Face dir);
+
+	// check if lookup was successful
+	operator bool() const { return chunk; }
+
+	// only valid if lookup was successful
+	Chunk &GetChunk() const { return *chunk; }
+	const Chunk::Pos &GetBlockPos() const { return pos; }
+	const Block &GetBlock() const { return GetChunk().BlockAt(GetBlockPos()); }
+	const BlockType &GetType() const { return GetChunk().Type(GetBlock()); }
+	int GetLight() const { return GetChunk().GetLight(GetBlockPos()); }
+
+private:
+	Chunk *chunk;
+	Chunk::Pos pos;
+
+};
+
+
 class Generator;
 
 class ChunkLoader {
 
 public:
-	ChunkLoader(const BlockTypeRegistry &, const Generator &);
+	struct Config {
+		int load_dist = 6;
+		int unload_dist = 8;
+	};
+
+	ChunkLoader(const Config &, const BlockTypeRegistry &, const Generator &);
 
 	void Generate(const Chunk::Pos &from, const Chunk::Pos &to);
+	void GenerateSurrounding(const Chunk::Pos &);
 
 	std::list<Chunk> &Loaded() { return loaded; }
 
@@ -130,6 +201,11 @@ public:
 	void Rebase(const Chunk::Pos &);
 	void Update();
 
+private:
+	Chunk &Generate(const Chunk::Pos &pos);
+	void Insert(Chunk &);
+	void Remove(Chunk &);
+
 private:
 	Chunk::Pos base;