#include "Block.hpp"
#include "BlockTypeRegistry.hpp"
-#include "../model/BlockModel.hpp"
-#include "../model/geometry.hpp"
+#include "../geometry/Location.hpp"
+#include "../geometry/primitive.hpp"
+#include <set>
#include <vector>
#include <glm/glm.hpp>
#include <glm/gtx/transform.hpp>
namespace blank {
class BlockType;
+class Entity;
class WorldCollision;
/// cube of size 16 (256 tiles, 4096 blocks)
class Chunk {
-public:
- using Pos = glm::tvec3<int>;
-
public:
explicit Chunk(const BlockTypeRegistry &) noexcept;
Chunk(Chunk &&) noexcept;
Chunk &operator =(Chunk &&) noexcept;
- static constexpr int width = 16;
- static constexpr int height = 16;
- static constexpr int depth = 16;
- static Pos Extent() noexcept { return { width, height, depth }; }
- static constexpr int size = width * height * depth;
+ static constexpr int side = ExactLocation::scale;
+ static constexpr float fside = ExactLocation::fscale;
+ static constexpr int size = side * side * side;
- static AABB Bounds() noexcept { return AABB{ { 0, 0, 0 }, Extent() }; }
+ static AABB Bounds() noexcept { return AABB{ { 0.0f, 0.0f, 0.0f }, ExactLocation::FExtent() }; }
+ static glm::vec3 Center() noexcept { return glm::vec3(8.0f); }
+ static float Radius() noexcept { return 27.71281292110203669632f; /* 16 * √3 */ }
- static constexpr bool InBounds(const Block::Pos &pos) noexcept {
+ /// get bounding box relative to given reference chunk
+ AABB RelativeBounds(const ExactLocation::Coarse &ref) const noexcept {
+ AABB bounds;
+ bounds.min = (position - ref) * ExactLocation::Extent();
+ bounds.max = bounds.min + ExactLocation::FExtent();
+ return bounds;
+ }
+
+ static constexpr bool InBounds(const ExactLocation::Fine &pos) noexcept {
return
- pos.x >= 0 && pos.x < width &&
- pos.y >= 0 && pos.y < height &&
- pos.z >= 0 && pos.z < depth;
+ pos.x >= 0.0f && pos.x < fside &&
+ pos.y >= 0.0f && pos.y < fside &&
+ pos.z >= 0.0f && pos.z < fside;
}
- static constexpr bool InBounds(const Pos &pos) noexcept {
+ static constexpr bool InBounds(const RoughLocation::Fine &pos) noexcept {
return
- pos.x >= 0 && pos.x < width &&
- pos.y >= 0 && pos.y < height &&
- pos.z >= 0 && pos.z < depth;
+ pos.x >= 0 && pos.x < side &&
+ pos.y >= 0 && pos.y < side &&
+ pos.z >= 0 && pos.z < side;
}
- static constexpr int ToIndex(const Pos &pos) noexcept {
- return pos.x + pos.y * width + pos.z * width * height;
+ static constexpr int ToIndex(const RoughLocation::Fine &pos) noexcept {
+ return pos.x + pos.y * side + pos.z * side * side;
}
static constexpr bool InBounds(int idx) noexcept {
return idx >= 0 && idx < size;
}
- static Block::Pos ToCoords(int idx) noexcept {
- return Block::Pos(
- 0.5f + (idx % width),
- 0.5f + ((idx / width) % height),
- 0.5f + (idx / (width * height))
+ static ExactLocation::Fine ToCoords(int idx) noexcept {
+ return ExactLocation::Fine(
+ 0.5f + (idx % side),
+ 0.5f + ((idx / side) % side),
+ 0.5f + (idx / (side * side))
);
}
- static Block::Pos ToCoords(const Pos &pos) noexcept {
- return Block::Pos(pos) + 0.5f;
+ static ExactLocation::Fine ToCoords(const RoughLocation::Fine &pos) noexcept {
+ return ExactLocation::Fine(pos) + 0.5f;
}
- static Pos ToPos(int idx) noexcept {
- return Pos(
- (idx % width),
- ((idx / width) % height),
- (idx / (width * height))
+ static RoughLocation::Fine ToPos(int idx) noexcept {
+ return RoughLocation::Fine(
+ (idx % side),
+ ((idx / side) % side),
+ (idx / (side * side))
);
}
- glm::mat4 ToTransform(const Pos &pos, int idx) const noexcept;
+ /// get a chunk-local transform for block at given position and index
+ /// (position and index are redundant)
+ glm::mat4 ToTransform(const RoughLocation::Fine &position, int index) const noexcept;
+ /// same as above, but also apply offset to given reference
+ glm::mat4 ToTransform(const ExactLocation::Coarse &ref, const RoughLocation::Fine &pos, int idx) const noexcept;
+
+ ExactLocation::Fine ToSceneCoords(const ExactLocation::Coarse &base, const ExactLocation::Fine &pos) const noexcept {
+ return ExactLocation::Fine((position - base) * ExactLocation::Extent()) + pos;
+ }
- static bool IsBorder(const Pos &pos) noexcept {
+ static bool IsBorder(const RoughLocation::Fine &pos) noexcept {
return
pos.x == 0 ||
- pos.x == width - 1 ||
+ pos.x == side - 1 ||
pos.y == 0 ||
- pos.y == height - 1 ||
+ pos.y == side - 1 ||
pos.z == 0 ||
- pos.z == depth - 1;
+ pos.z == side - 1;
}
static constexpr bool IsBorder(int idx) noexcept {
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
+ idx < side * side || // low Z plane
+ idx % side == 0 || // low X plane
+ (idx / (side * side)) == side - 1 || // high Z plane
+ idx % side == side - 1 || // high X plane
+ (idx / side) % side == 0 || // low Y plane
+ (idx / side) % side == side - 1; // high Y plane
}
bool IsSurface(int index) const noexcept { return IsSurface(ToPos(index)); }
- bool IsSurface(const Block::Pos &pos) const noexcept { return IsSurface(Pos(pos)); }
- bool IsSurface(const Pos &pos) const noexcept;
+ bool IsSurface(const ExactLocation::Fine &pos) const noexcept { return IsSurface(RoughLocation::Fine(pos)); }
+ bool IsSurface(const RoughLocation::Fine &pos) const noexcept;
- void SetNeighbor(Chunk &) noexcept;
+ void SetNeighbor(Block::Face, Chunk &) noexcept;
bool HasNeighbor(Block::Face f) const noexcept { return neighbor[f]; }
Chunk &GetNeighbor(Block::Face f) noexcept { return *neighbor[f]; }
const Chunk &GetNeighbor(Block::Face f) const noexcept { return *neighbor[f]; }
- void ClearNeighbors() noexcept;
void Unlink() noexcept;
- void Relink() noexcept;
// check which faces of a block at given index are obstructed (and therefore invisible)
- Block::FaceSet Obstructed(const Pos &) const noexcept;
-
- void Invalidate() noexcept { dirty = true; }
+ Block::FaceSet Obstructed(const RoughLocation::Fine &) const noexcept;
void SetBlock(int index, const Block &) noexcept;
- void SetBlock(const Block::Pos &pos, const Block &block) noexcept { SetBlock(ToIndex(pos), block); }
- void SetBlock(const Pos &pos, const Block &block) noexcept { SetBlock(ToIndex(pos), block); }
+ void SetBlock(const ExactLocation::Fine &pos, const Block &block) noexcept { SetBlock(ToIndex(pos), block); }
+ void SetBlock(const RoughLocation::Fine &pos, const Block &block) noexcept { SetBlock(ToIndex(pos), block); }
const Block &BlockAt(int index) const noexcept { return blocks[index]; }
- const Block &BlockAt(const Block::Pos &pos) const noexcept { return BlockAt(ToIndex(pos)); }
- const Block &BlockAt(const Pos &pos) const noexcept { return BlockAt(ToIndex(pos)); }
+ const Block &BlockAt(const ExactLocation::Fine &pos) const noexcept { return BlockAt(ToIndex(pos)); }
+ const Block &BlockAt(const RoughLocation::Fine &pos) const noexcept { return BlockAt(ToIndex(pos)); }
const BlockType &Type(const Block &b) const noexcept { return types->Get(b.type); }
const BlockType &Type(int index) const noexcept { return Type(BlockAt(index)); }
void SetLight(int index, int level) noexcept;
- void SetLight(const Pos &pos, int level) noexcept { SetLight(ToIndex(pos), level); }
- void SetLight(const Block::Pos &pos, int level) noexcept { SetLight(ToIndex(pos), level); }
+ void SetLight(const ExactLocation::Fine &pos, int level) noexcept { SetLight(ToIndex(pos), level); }
+ void SetLight(const RoughLocation::Fine &pos, int level) noexcept { SetLight(ToIndex(pos), level); }
int GetLight(int index) const noexcept;
- int GetLight(const Pos &pos) const noexcept { return GetLight(ToIndex(pos)); }
- int GetLight(const Block::Pos &pos) const noexcept { return GetLight(ToIndex(pos)); }
+ int GetLight(const ExactLocation::Fine &pos) const noexcept { return GetLight(ToIndex(pos)); }
+ int GetLight(const RoughLocation::Fine &pos) const noexcept { return GetLight(ToIndex(pos)); }
+
+ float GetVertexLight(const RoughLocation::Fine &, const BlockMesh::Position &, const EntityMesh::Normal &) const noexcept;
- float GetVertexLight(const Pos &, const BlockModel::Position &, const Model::Normal &) const noexcept;
+ /// get gravity for one unit mass at given point
+ glm::vec3 GravityAt(const ExactLocation &) const noexcept;
+ /// check if given ray passes this chunk at all
+ /// given reference indicates the chunk offset of the ray in world space
bool Intersection(
const Ray &ray,
- const glm::mat4 &M,
+ const ExactLocation::Coarse &reference,
float &dist
) const noexcept {
- return blank::Intersection(ray, Bounds(), M, &dist);
+ return blank::Intersection(ray, RelativeBounds(reference), dist);
}
+ /// check if given ray intersects any block of this chunk
+ /// given reference indicates the chunk offset of the ray in world space
bool Intersection(
const Ray &,
- const glm::mat4 &M,
- int &blkid,
- float &dist,
- glm::vec3 &normal) const noexcept;
+ const ExactLocation::Coarse &reference,
+ WorldCollision &) noexcept;
+ /// get all blocks intersecting given box
bool Intersection(
const AABB &box,
const glm::mat4 &Mbox,
const glm::mat4 &Mchunk,
- std::vector<WorldCollision> &) const noexcept;
+ std::vector<WorldCollision> &) noexcept;
+
+ bool Intersection(
+ const Entity &entity,
+ const glm::mat4 &Mentity,
+ const glm::mat4 &Mchunk,
+ std::vector<WorldCollision> &) noexcept;
- void Position(const Pos &pos) noexcept { position = pos; }
- const Pos &Position() const noexcept { return position; }
- glm::mat4 Transform(const Pos &offset) const noexcept {
- return glm::translate((position - offset) * Extent());
+ void Position(const ExactLocation::Coarse &pos) noexcept { position = pos; }
+ const ExactLocation::Coarse &Position() const noexcept { return position; }
+
+ glm::mat4 Transform(const ExactLocation::Coarse &offset) const noexcept {
+ return glm::translate((position - offset) * ExactLocation::Extent());
}
- void CheckUpdate() noexcept;
- void Draw() noexcept;
+ void *BlockData() noexcept { return &blocks[0]; }
+ const void *BlockData() const noexcept { return &blocks[0]; }
+ static constexpr std::size_t BlockSize() noexcept { return offsetof(Chunk, position) - offsetof(Chunk, blocks); }
-private:
- void Update() noexcept;
+ bool Generated() const noexcept { return generated; }
+ void SetGenerated() noexcept { generated = true; }
+ bool Lighted() const noexcept { return lighted; }
+ void ScanLights();
+
+ /// check for active blocks, should be called after
+ /// block data was modified by means other than SetBlock()
+ void ScanActive();
+
+ void Ref() noexcept { ++ref_count; }
+ void UnRef() noexcept { --ref_count; }
+ bool Referenced() const noexcept { return ref_count > 0; }
+
+ void Invalidate() noexcept { dirty_mesh = dirty_save = true; }
+ void InvalidateMesh() noexcept { dirty_mesh = true; }
+ void ClearMesh() noexcept { dirty_mesh = false; }
+ void ClearSave() noexcept { dirty_save = false; }
+ bool ShouldUpdateMesh() const noexcept { return dirty_mesh; }
+ bool ShouldUpdateSave() const noexcept { return dirty_save; }
+
+ void Update(BlockMesh &) noexcept;
private:
const BlockTypeRegistry *types;
Chunk *neighbor[Block::FACE_COUNT];
+
+ std::set<int> gravity;
+
Block blocks[size];
unsigned char light[size];
- BlockModel model;
- Pos position;
- bool dirty;
+ bool generated;
+ bool lighted;
+
+ ExactLocation::Coarse position;
+ int ref_count;
+ bool dirty_mesh;
+ bool dirty_save;
};
projects / blank.git / blobdiff