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https://github.com/MaSzyna-EU07/maszyna.git
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Hirek193
30fa68cfd8
Two things were still missing once a session ran for a while: a peer that had drifted apart from the authority had no way back short of restarting, and a connection that blinked cost the player their seat and handed their vehicle to the AI while the other driver was still sitting in it. - a client that disagrees with the authoritative digest for 120 steps in a row asks to be put back in line, and the server answers with a fresh snapshot. There is a cooldown between requests, so a correction that needs a moment to take hold does not turn into a stream of them - the server hands out a session token with its hello and remembers it. Present it again on the next connection and you come back as the same peer, with the same id - a lost connection no longer removes the peer from its crews: the seat is held for a minute. Come back in time and nothing changed; stay away and the seat is given up properly, handing the vehicle back to the AI only when that leaves the crew empty and the AI was driving it in the first place - after applying a snapshot a peer that finds itself on a crew walks into that cab, which is what makes a reconnect land the player back where they were - the vehicle roster is sent to a joining peer right before its snapshot, so the crew section resolves to names instead of waiting for the next broadcast
314 lines
8.6 KiB
C++
314 lines
8.6 KiB
C++
#include "stdafx.h"
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#include "network/message.h"
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#include "scene/sn_utils.h"
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void network::client_hello::serialize(std::ostream &stream) const
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{
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sn_utils::ls_int32(stream, version);
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sn_utils::ls_uint32(stream, start_packet);
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sn_utils::s_str(stream, app_version);
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sn_utils::ls_uint64(stream, session_token);
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}
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void network::client_hello::deserialize(std::istream &stream)
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{
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version = sn_utils::ld_int32(stream);
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start_packet = sn_utils::ld_uint32(stream);
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app_version = sn_utils::d_str(stream);
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session_token = sn_utils::ld_uint64(stream);
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}
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void network::server_reject::serialize(std::ostream &stream) const
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{
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sn_utils::s_str(stream, reason);
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}
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void network::server_reject::deserialize(std::istream &stream)
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{
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reason = sn_utils::d_str(stream);
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}
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void network::server_hello::serialize(std::ostream &stream) const
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{
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sn_utils::ls_uint32(stream, seed);
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sn_utils::ls_int64(stream, timestamp);
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sn_utils::ls_int64(stream, config);
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sn_utils::s_str(stream, scenario);
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sn_utils::s_str(stream, app_version);
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sn_utils::ls_uint32(stream, peer_id);
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sn_utils::ls_uint64(stream, session_token);
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}
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void network::server_hello::deserialize(std::istream &stream)
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{
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seed = sn_utils::ld_uint32(stream);
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timestamp = sn_utils::ld_int64(stream);
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config = sn_utils::ld_int64(stream);
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scenario = sn_utils::d_str(stream);
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app_version = sn_utils::d_str(stream);
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peer_id = sn_utils::ld_uint32(stream);
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session_token = sn_utils::ld_uint64(stream);
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}
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void network::vehicle_list::serialize(std::ostream &stream) const
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{
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sn_utils::ls_uint32(stream, (uint32_t)vehicles.size());
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for (auto const &entry : vehicles)
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{
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sn_utils::ls_uint32(stream, entry.id);
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sn_utils::s_str(stream, entry.name);
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sn_utils::s_uint8(stream, entry.crew_count);
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sn_utils::s_uint8(stream, entry.crew_capacity);
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sn_utils::s_uint8(stream, (uint8_t)((entry.ai_active ? 1 : 0) | (entry.claimable ? 2 : 0)));
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}
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}
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void network::vehicle_list::deserialize(std::istream &stream)
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{
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vehicles.clear();
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uint32_t const count = sn_utils::ld_uint32(stream);
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vehicles.reserve(count);
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for (uint32_t i = 0; i < count; i++)
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{
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vehicle_entry entry;
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entry.id = sn_utils::ld_uint32(stream);
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entry.name = sn_utils::d_str(stream);
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entry.crew_count = sn_utils::d_uint8(stream);
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entry.crew_capacity = sn_utils::d_uint8(stream);
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uint8_t const flags = sn_utils::d_uint8(stream);
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entry.ai_active = (flags & 1) != 0;
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entry.claimable = (flags & 2) != 0;
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vehicles.emplace_back(entry);
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}
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}
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void network::client_ready::serialize(std::ostream &stream) const
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{
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sn_utils::s_str(stream, scenario);
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}
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void network::client_ready::deserialize(std::istream &stream)
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{
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scenario = sn_utils::d_str(stream);
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}
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void network::snapshot::serialize(std::ostream &stream) const
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{
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sn_utils::ls_uint64(stream, tick);
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sn_utils::ls_uint32(stream, (uint32_t)blob.size());
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stream.write(blob.data(), blob.size());
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}
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void network::snapshot::deserialize(std::istream &stream)
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{
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tick = sn_utils::ld_uint64(stream);
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uint32_t const size = sn_utils::ld_uint32(stream);
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blob.assign(size, '\0');
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stream.read(blob.data(), size);
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}
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void network::request_resync::serialize(std::ostream &stream) const
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{
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sn_utils::ls_uint64(stream, tick);
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sn_utils::ls_uint64(stream, state_hash);
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}
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void network::request_resync::deserialize(std::istream &stream)
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{
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tick = sn_utils::ld_uint64(stream);
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state_hash = sn_utils::ld_uint64(stream);
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}
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void network::claim_vehicle::serialize(std::ostream &stream) const
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{
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sn_utils::ls_uint32(stream, entity_id);
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}
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void network::claim_vehicle::deserialize(std::istream &stream)
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{
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entity_id = sn_utils::ld_uint32(stream);
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}
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void network::claim_granted::serialize(std::ostream &stream) const
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{
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sn_utils::ls_uint32(stream, entity_id);
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}
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void network::claim_granted::deserialize(std::istream &stream)
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{
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entity_id = sn_utils::ld_uint32(stream);
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}
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void network::claim_denied::serialize(std::ostream &stream) const
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{
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sn_utils::ls_uint32(stream, entity_id);
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sn_utils::s_str(stream, reason);
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}
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void network::claim_denied::deserialize(std::istream &stream)
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{
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entity_id = sn_utils::ld_uint32(stream);
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reason = sn_utils::d_str(stream);
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}
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void network::leave_vehicle::serialize(std::ostream &stream) const
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{
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sn_utils::ls_uint32(stream, entity_id);
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}
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void network::leave_vehicle::deserialize(std::istream &stream)
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{
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entity_id = sn_utils::ld_uint32(stream);
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}
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void network::crew_update::serialize(std::ostream &stream) const
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{
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sn_utils::ls_uint32(stream, entity_id);
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sn_utils::ls_uint32(stream, (uint32_t)crew.size());
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for (PeerId const peer : crew)
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sn_utils::ls_uint32(stream, peer);
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}
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void network::crew_update::deserialize(std::istream &stream)
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{
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entity_id = sn_utils::ld_uint32(stream);
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crew.clear();
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uint32_t const count = sn_utils::ld_uint32(stream);
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crew.reserve(count);
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for (uint32_t i = 0; i < count; i++)
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crew.emplace_back(sn_utils::ld_uint32(stream));
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}
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void ::network::request_command::serialize(std::ostream &stream) const
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{
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sn_utils::ls_uint64(stream, tick);
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sn_utils::ls_uint32(stream, commands.size());
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for (auto const &kv : commands)
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{
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sn_utils::ls_uint32(stream, kv.first);
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sn_utils::ls_uint32(stream, kv.second.size());
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for (command_data const &data : kv.second)
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{
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sn_utils::ls_uint32(stream, (uint32_t)data.command);
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sn_utils::ls_int32(stream, data.action);
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sn_utils::ls_float64(stream, data.param1);
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sn_utils::ls_float64(stream, data.param2);
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sn_utils::ls_float64(stream, data.time_delta);
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sn_utils::s_bool(stream, data.freefly);
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sn_utils::s_vec3(stream, data.location);
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sn_utils::s_str(stream, data.payload);
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sn_utils::ls_uint32(stream, data.source);
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}
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}
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}
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void network::request_command::deserialize(std::istream &stream)
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{
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tick = sn_utils::ld_uint64(stream);
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uint32_t commands_size = sn_utils::ld_uint32(stream);
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for (uint32_t i = 0; i < commands_size; i++)
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{
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uint32_t recipient = sn_utils::ld_uint32(stream);
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uint32_t sequence_size = sn_utils::ld_uint32(stream);
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command_queue::commanddata_sequence sequence;
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for (uint32_t i = 0; i < sequence_size; i++)
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{
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command_data data;
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data.command = (user_command)sn_utils::ld_uint32(stream);
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data.action = sn_utils::ld_int32(stream);
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data.param1 = sn_utils::ld_float64(stream);
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data.param2 = sn_utils::ld_float64(stream);
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data.time_delta = sn_utils::ld_float64(stream);
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data.freefly = sn_utils::d_bool(stream);
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data.location = sn_utils::d_vec3(stream);
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data.payload = sn_utils::d_str(stream);
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data.source = sn_utils::ld_uint32(stream);
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sequence.emplace_back(data);
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}
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commands.emplace(recipient, sequence);
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}
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}
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void network::frame_info::serialize(std::ostream &stream) const
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{
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sn_utils::ls_float64(stream, render_dt);
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sn_utils::ls_float64(stream, dt);
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sn_utils::ls_uint64(stream, state_hash);
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sn_utils::ls_uint32(stream, state_hash_version);
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request_command::serialize(stream);
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}
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void network::frame_info::deserialize(std::istream &stream)
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{
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render_dt = sn_utils::ld_float64(stream);
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dt = sn_utils::ld_float64(stream);
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state_hash = sn_utils::ld_uint64(stream);
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state_hash_version = sn_utils::ld_uint32(stream);
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request_command::deserialize(stream);
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}
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std::shared_ptr<network::message> network::deserialize_message(std::istream &stream)
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{
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message::type_e type = (message::type_e)sn_utils::ld_uint16(stream);
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std::shared_ptr<message> msg;
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if (type == message::CLIENT_HELLO)
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msg = std::make_shared<client_hello>();
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else if (type == message::SERVER_HELLO)
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msg = std::make_shared<server_hello>();
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else if (type == message::FRAME_INFO)
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msg = std::make_shared<frame_info>();
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else if (type == message::REQUEST_COMMAND)
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msg = std::make_shared<request_command>();
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else if (type == message::SERVER_REJECT)
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msg = std::make_shared<server_reject>();
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else if (type == message::VEHICLE_LIST)
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msg = std::make_shared<vehicle_list>();
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else if (type == message::CLAIM_VEHICLE)
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msg = std::make_shared<claim_vehicle>();
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else if (type == message::CLAIM_GRANTED)
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msg = std::make_shared<claim_granted>();
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else if (type == message::CLAIM_DENIED)
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msg = std::make_shared<claim_denied>();
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else if (type == message::LEAVE_VEHICLE)
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msg = std::make_shared<leave_vehicle>();
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else if (type == message::CREW_UPDATE)
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msg = std::make_shared<crew_update>();
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else if (type == message::CLIENT_READY)
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msg = std::make_shared<client_ready>();
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else if (type == message::SNAPSHOT)
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msg = std::make_shared<snapshot>();
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else if (type == message::REQUEST_RESYNC)
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msg = std::make_shared<request_resync>();
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if (!msg) {
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// unknown message type; hand back a marker the peer handlers treat as a protocol error
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return std::make_shared<message>(message::TYPE_MAX);
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}
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msg->deserialize(stream);
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return msg;
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}
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void network::serialize_message(const message &msg, std::ostream &stream)
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{
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sn_utils::ls_uint16(stream, (uint16_t)msg.type);
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msg.serialize(stream);
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}
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