X-Git-Url: http://git.localhorst.tv/?a=blobdiff_plain;f=src%2Fchunk.hpp;h=6c9eeff5da4b7fc4bc68f84eccb713aaeb859bac;hb=5868f740c492a924cb865644b6201db1632b7376;hp=5c1cadb38d50f1222253d26b123b916a28170b3e;hpb=82426ae2997d2b21703d2d5afb631a84736e975f;p=blank.git

diff --git a/src/chunk.hpp b/src/chunk.hpp
index 5c1cadb..6c9eeff 100644
--- a/src/chunk.hpp
+++ b/src/chunk.hpp
@@ -5,6 +5,7 @@
 #include "geometry.hpp"
 #include "model.hpp"
 
+#include <list>
 #include <vector>
 #include <glm/glm.hpp>
 
@@ -31,14 +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 Chunk::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 Chunk::Pos &pos) {
+		return pos.x + pos.y * Width() + pos.z * Width() * Height();
 	}
 	static constexpr bool InBounds(int idx) {
 		return idx >= 0 && idx < Size();
@@ -50,6 +57,35 @@ public:
 			0.5f + (idx / (Width() * Height()))
 		);
 	}
+	static Chunk::Pos ToPos(int idx) {
+		return Chunk::Pos(
+			(idx % Width()),
+			((idx / Width()) % Height()),
+			(idx / (Width() * Height()))
+		);
+	}
+	glm::mat4 ToTransform(int idx) const;
+
+	static constexpr bool IsBorder(int idx) {
+		return
+			idx < Width() * Height() ||                    // low Z plane
+			idx % Width() == 0 ||                          // low X plane
+			(idx / (Width() * Height())) == Depth() - 1 || // high Z plane
+			idx % Width() == Width() - 1 ||                // high X plane
+			(idx / Width()) % Height() == 0 ||             // low Y plane
+			(idx / Width()) % Height() == Height() - 1;    // high Y plane
+	}
+
+	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 if block at given index is completely enclosed (and therefore invisible)
+	bool Obstructed(int idx) const;
 
 	void Allocate();
 	void Invalidate() { dirty = true; }
@@ -58,20 +94,31 @@ public:
 	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)); }
+	Block &BlockAt(const Chunk::Pos &pos) { return BlockAt(ToIndex(pos)); }
+	const Block &BlockAt(const Chunk::Pos &pos) const { return BlockAt(ToIndex(pos)); }
 
 	const BlockType &Type(const Block &b) const { return *types->Get(b.type); }
 
+	bool Intersection(
+		const Ray &ray,
+		const glm::mat4 &M,
+		float &dist
+	) const {
+		return blank::Intersection(ray, Bounds(), M, &dist);
+	}
+
 	bool Intersection(
 		const Ray &,
 		const glm::mat4 &M,
-		int *blkid = nullptr,
-		float *dist = nullptr,
-		glm::vec3 *normal = nullptr) const;
+		int &blkid,
+		float &dist,
+		glm::vec3 &normal) const;
 
 	void Position(const Pos &);
 	const Pos &Position() const { return position; }
 	glm::mat4 Transform(const Pos &offset) const;
 
+	void CheckUpdate();
 	void Draw();
 
 private:
@@ -79,6 +126,7 @@ private:
 
 private:
 	const BlockTypeRegistry *types;
+	Chunk *neighbor[Block::FACE_COUNT];
 	std::vector<Block> blocks;
 	Model model;
 	Pos position;
@@ -86,6 +134,46 @@ private:
 
 };
 
+
+class Generator;
+
+class ChunkLoader {
+
+public:
+	ChunkLoader(const BlockTypeRegistry &, const Generator &);
+
+	void Generate(const Chunk::Pos &from, const Chunk::Pos &to);
+
+	std::list<Chunk> &Loaded() { return loaded; }
+
+	Chunk *Loaded(const Chunk::Pos &);
+	bool Queued(const Chunk::Pos &);
+	bool Known(const Chunk::Pos &);
+	Chunk &ForceLoad(const Chunk::Pos &);
+
+	void Rebase(const Chunk::Pos &);
+	void Update();
+
+private:
+	Chunk &Generate(const Chunk::Pos &pos);
+	void Insert(Chunk &);
+	void Remove(Chunk &);
+
+private:
+	Chunk::Pos base;
+
+	const BlockTypeRegistry &reg;
+	const Generator &gen;
+
+	std::list<Chunk> loaded;
+	std::list<Chunk::Pos> to_generate;
+	std::list<Chunk> to_free;
+
+	int load_dist;
+	int unload_dist;
+
+};
+
 }
 
 #endif