76 lines
2.3 KiB
C++
76 lines
2.3 KiB
C++
#include "Chunk.hpp"
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#include <algorithm>
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#include "../../core/data/math.hpp"
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#include <Tracy.hpp>
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using namespace world::server;
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Chunk::Chunk(const chunk_pos& pos, const std::unique_ptr<world::generator::Abstract>& rnd): world::Chunk() {
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rnd->generate(pos, voxels);
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}
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#include <iostream>
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Chunk::Chunk(std::istream& str, bool rle): world::Chunk(str, rle) { }
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Chunk::~Chunk() { }
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world::Voxel Chunk::write(std::ostream& str, bool rle) const {
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Voxel::material_t majMat = UINT16_MAX;
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uint16_t majCounter = 1;
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size_t visibleDensity = 0;
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const auto doMaj = [&](const Voxel& current) {
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if (current.material() == majMat) {
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majCounter++;
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} else {
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majCounter--;
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}
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if (majCounter == 0) {
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majMat = current.material();
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majCounter = 1;
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}
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visibleDensity += current.density() * current.is_visible();
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};
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if (rle) {
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auto it = voxels.begin();
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uint16_t counter = 1;
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Voxel current = *it;
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while(true) {
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++it;
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doMaj(current);
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const auto end = (it == voxels.end());
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if(end || current.value != it->value) {
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str.write(reinterpret_cast<char *>(&counter), sizeof(counter));
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str.write(reinterpret_cast<char *>(¤t), sizeof(current));
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if(end)
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break;
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current = *it;
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counter = 1;
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} else {
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counter++;
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}
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}
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} else {
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for(auto current: voxels) {
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doMaj(current);
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str.write(reinterpret_cast<char *>(¤t), sizeof(current));
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}
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}
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if (majCounter-1 == INT16_MAX) { // Perfect majority
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return Voxel(voxels.front().material(), voxels.front().density(), true);
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}
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return Voxel(majMat, visibleDensity / CHUNK_SIZE);
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}
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void Chunk::set(uint16_t idx, const world::Voxel& val) {
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modified = modified || (voxels[idx].value != val.value);
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voxels[idx] = val;
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}
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void Chunk::setAt(const chunk_voxel_pos& pos, const world::Voxel& val) {
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set(glm::toIdx(pos), val);
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}
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std::optional<world::Item> Chunk::replace(chunk_voxel_idx idx, const world::Voxel& val, float) {
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const auto res = voxels[idx];
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set(idx, val);
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return {world::Item{res.density(), res.material()}};
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}
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