namespace blank {
-const BlockType BlockType::DEFAULT;
-
-void BlockType::FillVBO(
- const glm::vec3 &pos,
- std::vector<glm::vec3> &vertices,
- std::vector<glm::vec3> &colors,
- std::vector<glm::vec3> &normals
-) const {
- vertices.emplace_back(pos.x , pos.y , pos.z + 1); // front
- vertices.emplace_back(pos.x + 1, pos.y , pos.z + 1);
- vertices.emplace_back(pos.x , pos.y + 1, pos.z + 1);
- vertices.emplace_back(pos.x + 1, pos.y , pos.z + 1);
- vertices.emplace_back(pos.x + 1, pos.y + 1, pos.z + 1);
- vertices.emplace_back(pos.x , pos.y + 1, pos.z + 1);
- vertices.emplace_back(pos.x , pos.y , pos.z ); // back
- vertices.emplace_back(pos.x , pos.y + 1, pos.z );
- vertices.emplace_back(pos.x + 1, pos.y , pos.z );
- vertices.emplace_back(pos.x + 1, pos.y , pos.z );
- vertices.emplace_back(pos.x , pos.y + 1, pos.z );
- vertices.emplace_back(pos.x + 1, pos.y + 1, pos.z );
- vertices.emplace_back(pos.x , pos.y + 1, pos.z ); // top
- vertices.emplace_back(pos.x , pos.y + 1, pos.z + 1);
- vertices.emplace_back(pos.x + 1, pos.y + 1, pos.z );
- vertices.emplace_back(pos.x + 1, pos.y + 1, pos.z );
- vertices.emplace_back(pos.x , pos.y + 1, pos.z + 1);
- vertices.emplace_back(pos.x + 1, pos.y + 1, pos.z + 1);
- vertices.emplace_back(pos.x , pos.y , pos.z ); // bottom
- vertices.emplace_back(pos.x + 1, pos.y , pos.z );
- vertices.emplace_back(pos.x , pos.y , pos.z + 1);
- vertices.emplace_back(pos.x + 1, pos.y , pos.z );
- vertices.emplace_back(pos.x + 1, pos.y , pos.z + 1);
- vertices.emplace_back(pos.x , pos.y , pos.z + 1);
- vertices.emplace_back(pos.x , pos.y , pos.z ); // left
- vertices.emplace_back(pos.x , pos.y , pos.z + 1);
- vertices.emplace_back(pos.x , pos.y + 1, pos.z );
- vertices.emplace_back(pos.x , pos.y + 1, pos.z );
- vertices.emplace_back(pos.x , pos.y , pos.z + 1);
- vertices.emplace_back(pos.x , pos.y + 1, pos.z + 1);
- vertices.emplace_back(pos.x + 1, pos.y , pos.z ); // right
- vertices.emplace_back(pos.x + 1, pos.y + 1, pos.z );
- vertices.emplace_back(pos.x + 1, pos.y , pos.z + 1);
- vertices.emplace_back(pos.x + 1, pos.y , pos.z + 1);
- vertices.emplace_back(pos.x + 1, pos.y + 1, pos.z );
- vertices.emplace_back(pos.x + 1, pos.y + 1, pos.z + 1);
-
- colors.insert(colors.end(), 6 * 6, color);
-
- normals.insert(normals.end(), 6, glm::vec3( 0.0f, 0.0f, 1.0f)); // front
- normals.insert(normals.end(), 6, glm::vec3( 0.0f, 0.0f, -1.0f)); // back
- normals.insert(normals.end(), 6, glm::vec3( 0.0f, 1.0f, 0.0f)); // top
- normals.insert(normals.end(), 6, glm::vec3( 0.0f, -1.0f, 0.0f)); // bottom
- normals.insert(normals.end(), 6, glm::vec3(-1.0f, 0.0f, 0.0f)); // left
- normals.insert(normals.end(), 6, glm::vec3( 1.0f, 0.0f, 0.0f)); // right
-}
-
-
-BlockTypeRegistry::BlockTypeRegistry() {
- Add(BlockType::DEFAULT);
-}
-
-int BlockTypeRegistry::Add(const BlockType &t) {
- int id = types.size();
- types.push_back(t);
- types.back().id = id;
- return id;
-}
-
-
-Chunk::Chunk()
-: blocks(Size())
-, model()
-, transform(1.0f)
-, dirty(false) {
-
-}
-
-Chunk::Chunk(Chunk &&other)
-: blocks(std::move(other.blocks))
-, model(std::move(other.model))
-, transform(other.transform)
-, dirty(other.dirty) {
-
-}
-
-Chunk &Chunk::operator =(Chunk &&other) {
- blocks = std::move(other.blocks);
- model = std::move(other.model);
- transform = other.transform;
- dirty = other.dirty;
- return *this;
-}
-
-
-void Chunk::Draw() {
- if (dirty) {
- Update();
- }
- model.Draw();
-}
-
-
-bool Chunk::Intersection(
- const Ray &ray,
- const glm::mat4 &M,
- int *blkid,
- float *dist,
- glm::vec3 *normal) const {
- { // rough check
- const AABB bb{{0, 0, 0}, {Width(), Height(), Depth()}};
- if (!blank::Intersection(ray, bb, M)) {
- return false;
- }
- }
-
- if (!blkid && !dist && !normal) {
- return true;
- }
-
- // TODO: should be possible to heavily optimize this
- int id = 0;
- int closest_id = -1;
- float closest_dist = std::numeric_limits<float>::infinity();
- glm::vec3 closest_normal(0, 1, 0);
- for (int z = 0; z < Depth(); ++z) {
- for (int y = 0; y < Height(); ++y) {
- for (int x = 0; x < Width(); ++x, ++id) {
- if (!blocks[id].type->visible) {
+World::World()
+: blockType()
+, blockShape({{ -0.5f, -0.5f, -0.5f }, { 0.5f, 0.5f, 0.5f }})
+, stairShape({{ -0.5f, -0.5f, -0.5f }, { 0.5f, 0.5f, 0.5f }}, { 0.0f, 0.0f })
+, slabShape({{ -0.5f, -0.5f, -0.5f }, { 0.5f, 0.0f, 0.5f }})
+, blockNoise(0)
+, colorNoise(1)
+, player()
+, player_chunk(0, 0, 0)
+, loaded()
+, to_generate()
+, to_free() {
+ blockType.Add(BlockType{ true, { 1.0f, 1.0f, 1.0f }, &blockShape }); // white block
+ blockType.Add(BlockType{ true, { 1.0f, 1.0f, 1.0f }, &stairShape }); // white stair
+ blockType.Add(BlockType{ true, { 1.0f, 1.0f, 1.0f }, &slabShape }); // white slab
+ blockType.Add(BlockType{ true, { 1.0f, 0.0f, 0.0f }, &blockShape }); // red block
+ blockType.Add(BlockType{ true, { 1.0f, 0.0f, 0.0f }, &stairShape }); // red stair
+ blockType.Add(BlockType{ true, { 1.0f, 0.0f, 0.0f }, &slabShape }); // red slab
+ blockType.Add(BlockType{ true, { 0.0f, 1.0f, 0.0f }, &blockShape }); // green block
+ blockType.Add(BlockType{ true, { 0.0f, 1.0f, 0.0f }, &stairShape }); // green stair
+ blockType.Add(BlockType{ true, { 0.0f, 1.0f, 0.0f }, &slabShape }); // green slab
+ blockType.Add(BlockType{ true, { 0.0f, 0.0f, 1.0f }, &blockShape }); // blue block
+ blockType.Add(BlockType{ true, { 0.0f, 0.0f, 1.0f }, &stairShape }); // blue stair
+ blockType.Add(BlockType{ true, { 0.0f, 0.0f, 1.0f }, &slabShape }); // blue slab
+
+ player.Position({ 4.0f, 4.0f, 4.0f });
+}
+
+
+namespace {
+
+bool ChunkLess(const Chunk &a, const Chunk &b) {
+ return
+ a.Position().x * a.Position().x +
+ a.Position().y * a.Position().y +
+ a.Position().z * a.Position().z <
+ b.Position().x * b.Position().x +
+ b.Position().y * b.Position().y +
+ b.Position().z * b.Position().z;
+}
+
+}
+
+void World::Generate(const Chunk::Pos &from, const Chunk::Pos &to) {
+ for (int z = from.z; z < to.z; ++z) {
+ for (int y = from.y; y < to.y; ++y) {
+ for (int x = from.x; x < to.x; ++x) {
+ Block::Pos pos{float(x), float(y), float(z)};
+ if (ChunkAvailable(pos)) {
continue;
- }
- const AABB bb{{x, y, z}, {x+1, y+1, z+1}};
- float cur_dist;
- glm::vec3 cur_norm;
- if (blank::Intersection(ray, bb, M, &cur_dist, &cur_norm)) {
- if (cur_dist < closest_dist) {
- closest_id = id;
- closest_dist = cur_dist;
- closest_normal = cur_norm;
- }
+ } else if (x == 0 && y == 0 && z == 0) {
+ loaded.emplace_back(blockType);
+ loaded.back().Position(pos);
+ Generate(loaded.back());
+ } else {
+ to_generate.emplace_back(blockType);
+ to_generate.back().Position(pos);
}
}
}
}
-
- if (closest_id < 0) {
- return false;
- }
-
- if (blkid) {
- *blkid = closest_id;
- }
- if (dist) {
- *dist = closest_dist;
- }
- if (normal) {
- *normal = closest_normal;
- }
- return true;
-}
-
-void Chunk::Position(const glm::vec3 &pos) {
- position = pos;
- transform = glm::translate(pos * Extent());
+ to_generate.sort(ChunkLess);
}
-
-int Chunk::VertexCount() const {
- // TODO: query blocks as soon as type shapes are implemented
- return Size() * 6 * 6;
-}
-
-void Chunk::Update() {
- model.Clear();
- model.Reserve(VertexCount());
-
- for (int i = 0; i < Size(); ++i) {
- if (blocks[i].type->visible) {
- blocks[i].type->FillModel(ToCoords(i), model);
+void World::Generate(Chunk &chunk) {
+ chunk.Allocate();
+ Chunk::Pos pos(chunk.Position());
+ glm::vec3 coords(pos * Chunk::Extent());
+ if (pos.x == 0 && pos.y == 0 && pos.z == 0) {
+ for (size_t i = 1; i < blockType.Size(); ++i) {
+ chunk.BlockAt(i) = Block(i);
+ chunk.BlockAt(i + 257) = Block(i);
+ chunk.BlockAt(i + 514) = Block(i);
}
- }
-
- model.Invalidate();
- dirty = false;
-}
-
-
-World::World()
-: blockType()
-, chunks() {
- blockType.Add(BlockType(true, glm::vec3(1, 1, 1)));
- blockType.Add(BlockType(true, glm::vec3(1, 0, 0)));
- blockType.Add(BlockType(true, glm::vec3(0, 1, 0)));
- blockType.Add(BlockType(true, glm::vec3(0, 0, 1)));
-}
-
-
-void World::Generate() {
- for (int z = -1; z < 2; ++z) {
- for (int y = -1; y < 2; ++y) {
- for (int x = -1; x < 2; ++x) {
- Generate(glm::vec3(x, y, z));
+ } else {
+ for (int z = 0; z < Chunk::Depth(); ++z) {
+ for (int y = 0; y < Chunk::Height(); ++y) {
+ for (int x = 0; x < Chunk::Width(); ++x) {
+ Block::Pos block_pos{float(x), float(y), float(z)};
+ glm::vec3 gen_pos = (coords + block_pos) / 64.0f;
+ float val = blockNoise(gen_pos);
+ if (val > 0.8f) {
+ int col_val = int((colorNoise(gen_pos) + 1.0f) * 2.0f) % 4;
+ chunk.BlockAt(block_pos) = Block(col_val * 3 + 1);
+ }
+ }
}
}
}
-}
-
-Chunk &World::Generate(const glm::vec3 &pos) {
- chunks.emplace_back();
- Chunk &chunk = chunks.back();
- chunk.Position(pos);
- chunk.BlockAt(glm::vec3(0, 0, 0)) = Block(blockType[4]);
- chunk.BlockAt(glm::vec3(0, 0, 1)) = Block(blockType[1]);
- chunk.BlockAt(glm::vec3(1, 0, 0)) = Block(blockType[2]);
- chunk.BlockAt(glm::vec3(1, 0, 1)) = Block(blockType[3]);
- chunk.BlockAt(glm::vec3(2, 0, 0)) = Block(blockType[4]);
- chunk.BlockAt(glm::vec3(2, 0, 1)) = Block(blockType[1]);
- chunk.BlockAt(glm::vec3(3, 0, 0)) = Block(blockType[2]);
- chunk.BlockAt(glm::vec3(3, 0, 1)) = Block(blockType[3]);
- chunk.BlockAt(glm::vec3(2, 0, 2)) = Block(blockType[4]);
- chunk.BlockAt(glm::vec3(2, 0, 3)) = Block(blockType[1]);
- chunk.BlockAt(glm::vec3(3, 0, 2)) = Block(blockType[2]);
- chunk.BlockAt(glm::vec3(3, 0, 3)) = Block(blockType[3]);
- chunk.BlockAt(glm::vec3(1, 1, 0)) = Block(blockType[1]);
- chunk.BlockAt(glm::vec3(1, 1, 1)) = Block(blockType[4]);
- chunk.BlockAt(glm::vec3(2, 1, 1)) = Block(blockType[3]);
- chunk.BlockAt(glm::vec3(2, 2, 1)) = Block(blockType[2]);
chunk.Invalidate();
- return chunk;
}
bool World::Intersection(
float closest_dist = std::numeric_limits<float>::infinity();
glm::vec3 closest_normal;
- for (Chunk &cur_chunk : chunks) {
+ for (Chunk &cur_chunk : loaded) {
int cur_blkid;
float cur_dist;
glm::vec3 cur_normal;
- if (cur_chunk.Intersection(ray, M * cur_chunk.Transform(), &cur_blkid, &cur_dist, &cur_normal)) {
+ if (cur_chunk.Intersection(ray, M * cur_chunk.Transform(player.ChunkCoords()), &cur_blkid, &cur_dist, &cur_normal)) {
if (cur_dist < closest_dist) {
closest_chunk = &cur_chunk;
closest_blkid = cur_blkid;
}
-Chunk &World::Next(const Chunk &to, const glm::vec3 &dir) {
- const glm::vec3 tgt_pos = to.Position() + dir;
- for (Chunk &chunk : chunks) {
- if (chunk.Position() == tgt_pos) {
- return chunk;
+Chunk *World::ChunkLoaded(const Chunk::Pos &pos) {
+ for (Chunk &chunk : loaded) {
+ if (chunk.Position() == pos) {
+ return &chunk;
+ }
+ }
+ return nullptr;
+}
+
+Chunk *World::ChunkQueued(const Chunk::Pos &pos) {
+ for (Chunk &chunk : to_generate) {
+ if (chunk.Position() == pos) {
+ return &chunk;
+ }
+ }
+ return nullptr;
+}
+
+Chunk *World::ChunkAvailable(const Chunk::Pos &pos) {
+ Chunk *chunk = ChunkLoaded(pos);
+ if (chunk) return chunk;
+
+ return ChunkQueued(pos);
+}
+
+Chunk &World::Next(const Chunk &to, const glm::tvec3<int> &dir) {
+ const Chunk::Pos tgt_pos = to.Position() + dir;
+
+ Chunk *chunk = ChunkLoaded(tgt_pos);
+ if (chunk) {
+ return *chunk;
+ }
+
+ chunk = ChunkQueued(tgt_pos);
+ if (chunk) {
+ Generate(*chunk);
+ return *chunk;
+ }
+
+ loaded.emplace_back(blockType);
+ loaded.back().Position(tgt_pos);
+ Generate(loaded.back());
+ return loaded.back();
+}
+
+
+void World::Update(int dt) {
+ player.Update(dt);
+
+ CheckChunkGeneration();
+}
+
+void World::CheckChunkGeneration() {
+ if (player.ChunkCoords() != player_chunk) {
+ player_chunk = player.ChunkCoords();
+
+ constexpr int max_dist = 8;
+ // unload far away chunks
+ for (auto iter(loaded.begin()), end(loaded.end()); iter != end;) {
+ if (std::abs(player_chunk.x - iter->Position().x) > max_dist
+ || std::abs(player_chunk.y - iter->Position().y) > max_dist
+ || std::abs(player_chunk.z - iter->Position().z) > max_dist) {
+ auto saved = iter;
+ ++iter;
+ to_free.splice(to_free.end(), loaded, saved);
+ } else {
+ ++iter;
+ }
+ }
+ // abort far away queued chunks
+ for (auto iter(to_generate.begin()), end(to_generate.end()); iter != end;) {
+ if (std::abs(player_chunk.x - iter->Position().x) > max_dist
+ || std::abs(player_chunk.y - iter->Position().y) > max_dist
+ || std::abs(player_chunk.z - iter->Position().z) > max_dist) {
+ iter = to_generate.erase(iter);
+ } else {
+ ++iter;
+ }
+ }
+ // add missing new chunks
+ const Chunk::Pos offset(max_dist, max_dist, max_dist);
+ Generate(player_chunk - offset, player_chunk + offset);
+ }
+
+ if (!to_generate.empty()) {
+ Generate(to_generate.front());
+ loaded.splice(loaded.end(), to_generate, to_generate.begin());
+ }
+
+ if (!to_free.empty()) {
+ to_free.pop_front();
+ }
+}
+
+
+void World::Render(DirectionalLighting &program) {
+ program.SetLightDirection({ -1.0f, -3.0f, -2.0f });
+ program.SetView(glm::inverse(player.Transform(player.ChunkCoords())));
+
+ for (Chunk &chunk : LoadedChunks()) {
+ glm::mat4 m(chunk.Transform(player.ChunkCoords()));
+ program.SetM(m);
+ glm::mat4 mvp(program.GetVP() * m);
+ if (!CullTest(Chunk::Bounds(), mvp)) {
+ chunk.Draw();
}
}
- return Generate(tgt_pos);
}
}
projects / blank.git / blobdiff