X-Git-Url: http://git.localhorst.tv/?a=blobdiff_plain;f=src%2Fworld.cpp;h=fb1023f8c5aad75ab50d5fa630f1ca139f05d8c8;hb=addf4eb6485a36d40096d87196ed786e6e16ab6d;hp=57583e6ed4e2267a48a241412a16159ddf7c42ab;hpb=f62562b0f87d571bd7b32ae2f8ca659c24e9911b;p=blank.git diff --git a/src/world.cpp b/src/world.cpp index 57583e6..fb1023f 100644 --- a/src/world.cpp +++ b/src/world.cpp @@ -6,159 +6,6 @@ namespace blank { -const BlockType BlockType::DEFAULT; -const NullShape BlockType::DEFAULT_SHAPE; - -void BlockType::FillVBO( - const glm::vec3 &pos, - std::vector &vertices, - std::vector &colors, - std::vector &normals -) const { - shape->Vertices(vertices, pos); - colors.insert(colors.end(), shape->VertexCount(), color); - shape->Normals(normals); -} - -void BlockType::FillOutlineVBO( - std::vector &vertices, - std::vector &colors -) const { - shape->Outline(vertices); - colors.insert(colors.end(), shape->OutlineCount(), outline_color); -} - - -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::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) { - continue; - } - float cur_dist; - glm::vec3 cur_norm; - glm::vec3 pos(float(x) + 0.5f, float(y) + 0.5f, float(z) + 0.5f); - if (blocks[id].type->shape->Intersects(ray, glm::translate(M, pos), cur_dist, cur_norm)) { - if (cur_dist < closest_dist) { - closest_id = id; - closest_dist = cur_dist; - closest_normal = cur_norm; - } - } - } - } - } - - 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()); -} - - -int Chunk::VertexCount() const { - int count = 0; - for (const auto &block : blocks) { - count += block.type->shape->VertexCount(); - } - return count; -} - -void Chunk::Update() { - model.Clear(); - model.Reserve(VertexCount()); - - for (size_t i = 0; i < Size(); ++i) { - blocks[i].type->FillModel(ToCoords(i), model); - } - - model.Invalidate(); - dirty = false; -} - - World::World() : blockType() , blockShape({{ -0.5f, -0.5f, -0.5f }, { 0.5f, 0.5f, 0.5f }}) @@ -166,7 +13,10 @@ World::World() , slabShape({{ -0.5f, -0.5f, -0.5f }, { 0.5f, 0.0f, 0.5f }}) , blockNoise(0) , colorNoise(1) -, chunks() { +, player() +, player_chunk(0, 0, 0) +, loaded() +, to_generate() { 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 @@ -179,23 +29,42 @@ World::World() 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 dot(a.Position(), a.Position()) < dot(b.Position(), b.Position()); } +} -void World::Generate() { - for (int z = -2; z < 3; ++z) { - for (int y = -2; y < 3; ++y) { - for (int x = -2; x < 3; ++x) { - Generate(glm::vec3(x, y, z)); +void World::Generate(const glm::tvec3 &from, const glm::tvec3 &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) { + glm::vec3 pos{float(x), float(y), float(z)}; + if (ChunkAvailable(pos)) { + continue; + } else if (x == 0 && y == 0 && z == 0) { + loaded.emplace_back(); + loaded.back().Position(pos); + Generate(loaded.back()); + } else { + to_generate.emplace_back(); + to_generate.back().Position(pos); + } } } } + to_generate.sort(ChunkLess); } -Chunk &World::Generate(const glm::vec3 &pos) { - chunks.emplace_back(); - Chunk &chunk = chunks.back(); - chunk.Position(pos); +void World::Generate(Chunk &chunk) { + glm::vec3 pos(chunk.Position()); if (pos.x == 0 && pos.y == 0 && pos.z == 0) { for (size_t i = 1; i < blockType.Size(); ++i) { chunk.BlockAt(i) = Block(blockType[i]); @@ -218,7 +87,6 @@ Chunk &World::Generate(const glm::vec3 &pos) { } } chunk.Invalidate(); - return chunk; } bool World::Intersection( @@ -233,11 +101,11 @@ bool World::Intersection( float closest_dist = std::numeric_limits::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; @@ -263,14 +131,107 @@ bool World::Intersection( } +Chunk *World::ChunkLoaded(const glm::tvec3 &pos) { + for (Chunk &chunk : loaded) { + if (glm::tvec3(chunk.Position()) == pos) { + return &chunk; + } + } + return nullptr; +} + +Chunk *World::ChunkQueued(const glm::tvec3 &pos) { + for (Chunk &chunk : to_generate) { + if (glm::tvec3(chunk.Position()) == pos) { + return &chunk; + } + } + return nullptr; +} + +Chunk *World::ChunkAvailable(const glm::tvec3 &pos) { + Chunk *chunk = ChunkLoaded(pos); + if (chunk) return chunk; + + return ChunkQueued(pos); +} + 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 *chunk = ChunkLoaded(tgt_pos); + if (chunk) { + return *chunk; + } + + chunk = ChunkQueued(tgt_pos); + if (chunk) { + Generate(*chunk); + return *chunk; + } + + loaded.emplace_back(); + 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) { + iter = loaded.erase(iter); + } 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 + glm::tvec3 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()); + } +} + + +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); } }