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perf(world): cull distant players from updates and rendering

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Add distance2 utility function. On client, skip rendering other players if distance squared exceeds rendering distance. On server, only send player position and block change updates to players in relevant chunks.
This commit is contained in:
zhenyan121
2026-06-30 17:41:12 +08:00
parent 9fc94c56b5
commit b24ce458dc
3 changed files with 32 additions and 6 deletions
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27
src/gameplay/server_world.cpp
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@@ -585,7 +585,7 @@ void ServerWorld::sync_player_pos(const std::string& uuid, float x, float y,
it->second.update_sync_gametick(m_game_ticks);
name = it->second.get_name();
}
ChunkPos pos = get_chunk_pos(x, z);
// update other player pos;
std::vector<std::shared_ptr<Session>> other;
{
@@ -594,11 +594,16 @@ void ServerWorld::sync_player_pos(const std::string& uuid, float x, float y,
if (o_uuid == uuid) {
continue;
}
other.emplace_back(player.get_session());
if (player.has_player(pos)) {
other.emplace_back(player.get_session());
}
}
}
for (auto& session : other) {
if (!session) {
continue;
}
Arena arena;
auto* rsp = Arena::Create<PlayerInfoRsp>(&arena);
rsp->set_uuid(uuid);
@@ -694,7 +699,9 @@ void ServerWorld::handle_player_exit(const std::string& uuid) {
}
for (auto& s : sessions) {
s->send(make_packet(*rsp));
if (s) {
s->send(make_packet(*rsp));
}
}
}
@@ -741,15 +748,23 @@ void ServerWorld::handle_block_change(const BlockChangeReq& req) {
pos->set_y(y);
pos->set_z(z);
rsp->set_block(req.block());
std::vector<std::shared_ptr<Session>> sessions;
auto chunk_pos = get_chunk_pos(x, z);
{
std::shared_lock lock(m_player_mutex);
for (auto& [uuid, player] : m_players) {
auto session = player.get_session();
if (session) {
session->send(make_packet(*rsp));
if (player.has_player(chunk_pos)) {
auto session = player.get_session();
sessions.emplace_back(std::move(session));
}
}
}
for (auto& x : sessions) {
if (x) {
x->send(make_packet(*rsp));
}
}
}
int ServerWorld::rendering_distance() const {