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https://github.com/zhenyan121/Cubed.git
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f4114c2699
* refactor: use TBB for concurrent hash maps and parallelize chunk processing * fix: tbb link fail * refactor(chunk): remove biome check for caves in rivers and oceans * refactor(random): replace std distributions with custom implementations Avoid overhead and platform-dependent behavior of `<random>` distributions by using direct engine operations and integer arithmetic. This ensures deterministic, cross-platform results and improves performance. * refactor(generation): use chunk seed for cave and river paths - Use per-chunk seed instead of global path_id for cave and river generation. - Remove unused m_sum variables and m_path_id members. - Clamp river yaw within 10 degrees of initial direction. - Fix river radius interpolation (use t instead of 1-t). - Lower sea level from 64 to 63.
61 lines
1.7 KiB
C++
61 lines
1.7 KiB
C++
#include "Cubed/gameplay/river_worm.hpp"
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#include "Cubed/constants.hpp"
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namespace Cubed {
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RiverWorm::RiverWorm() {}
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RiverWorm::RiverHashMap& RiverWorm::paths() { return m_paths; }
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void RiverWorm::init(unsigned world_seed) {
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m_seed = world_seed;
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m_random.init(m_seed);
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}
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void RiverWorm::reload(unsigned world_seed) {
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m_seed = world_seed;
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m_paths.clear();
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init(world_seed);
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}
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void RiverWorm::add_path(const glm::vec3& pos, unsigned chunk_seed) {
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m_paths.emplace(chunk_seed, RiverPath{chunk_seed, m_seed, pos});
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}
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void RiverWorm::try_to_add_path(const ChunkPos& chunk_pos,
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unsigned chunk_seed) {
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{
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RiverHashMap::const_accessor acc;
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if (m_paths.find(acc, chunk_seed)) {
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return;
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}
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}
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Random random{chunk_seed};
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if (random.random_bool(static_cast<double>(m_probability))) {
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const int CHUNK_MIN_X = chunk_pos.x * CHUNK_SIZE;
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const int CHUNK_MIN_Z = chunk_pos.z * CHUNK_SIZE;
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const int CHUNK_MAX_X = CHUNK_MIN_X + SIZE_X - 1;
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const int CHUNK_MAX_Z = CHUNK_MIN_Z + SIZE_Z - 1;
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int x = random.random_int(CHUNK_MIN_X, CHUNK_MAX_X);
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int y = SEA_LEVEL + 2;
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int z = random.random_int(CHUNK_MIN_Z, CHUNK_MAX_Z);
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add_path(glm::vec3{x, y, z}, chunk_seed);
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}
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}
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void RiverWorm::cleanup_finished_rivers() {
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std::vector<unsigned> finished_keys;
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for (const auto& pair : m_paths) {
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if (pair.second.is_finished()) {
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finished_keys.push_back(pair.first);
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}
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}
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for (const auto& key : finished_keys) {
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m_paths.erase(key);
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}
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}
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int RiverWorm::river_sum() const { return m_paths.size(); }
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float& RiverWorm::river_probability() { return m_probability; }
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} // namespace Cubed
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