86 lines
2.9 KiB
C++
86 lines
2.9 KiB
C++
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#include "World.hpp"
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#include "../contouring/FlatBox.hpp"
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#include "../render/buffer/ShortIndexedBuffer.hpp"
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World::World(const World::options& options) {
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setOptions(options);
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}
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World::~World() { }
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void World::update(const camera_pos& pos, World::report& rep) {
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const chunk_pos newPos = glm::divide(pos, chunk_voxel_pos(CHUNK_LENGTH));
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const auto chunkChange = newPos != last_pos;
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last_pos = newPos;
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// Update alive chunks
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{
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for(auto [chunkPos, chunk]: chunks) {
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const glm::ivec3 dist = last_pos - chunkPos;
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if (dist.x * dist.x + dist.y * dist.y + dist.z * dist.z > keepDistance * keepDistance
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&& unloadQueue.push(chunkPos)) {
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//TODO: unloadCount++;
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continue;
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}
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if (chunk->update()) { // MAYBE: update joints
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if(chunk->buffer != NULL)
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delete chunk->buffer;
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std::vector<VertexData> vertices;
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FlatBox::render(chunk->begin(), vertices);
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chunk->buffer = new ShortIndexedBuffer(GL_TRIANGLES, vertices);
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}
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}
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}
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rep.chunk_unload.push(unloadQueue.size());
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// Unload dead chunks
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for (size_t i = 0; i < 8 && !unloadQueue.empty(); i++) {
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chunks.extract(unloadQueue.pop());
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//TODO: save to file
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}
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// Find missing chunks (~240ms from max loadDistance)
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if(chunkChange) {
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std::vector<chunk_pos> to_load;
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for (int x = -loadDistance; x <= loadDistance; x++) {
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for (int y = -loadDistance; y <= loadDistance; y++) {
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for (int z = -loadDistance; z <= loadDistance; z++) {
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if (x * x + y * y + z * z <= loadDistance * loadDistance) {
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const chunk_pos p = last_pos + glm::ivec3(x, y, z);
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if (chunks.find(p) == chunks.end()) {
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to_load.push_back(p);
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}
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}
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}}}
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std::sort(to_load.begin(), to_load.end(), [](const chunk_pos &a, const chunk_pos &b) {
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return glm::length2(a) < glm::length2(b);
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});
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for(auto p: to_load) {
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loadQueue.push(p);
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}
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}
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rep.chunk_load.push(loadQueue.size());
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// Load chunks
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for (size_t i = 0; i < 2 && !loadQueue.empty(); i++) {
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const auto pos = loadQueue.pop();
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const auto chunk = std::make_shared<Chunk>(pos, generator);
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chunks.insert({pos, chunk});
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}
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rep.chunk_count.push(chunks.size());
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}
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void World::setOptions(const World::options& options) {
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loadDistance = options.loadDistance;
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keepDistance = options.keepDistance;
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}
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void World::getModels(std::vector<std::pair<glm::mat4, Buffer*>> &out, float scale) const {
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const auto scaling = glm::scale(glm::mat4(1), glm::vec3(scale));
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for(const auto [pos, chunk]: chunks) {
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if(chunk->buffer != NULL)
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out.push_back({glm::translate(scaling, glm::vec3(pos) * glm::vec3(CHUNK_LENGTH)), chunk->buffer});
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}
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}
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