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[MP] Let MultiplayerAPI handle packet relaying and peer signaling.

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MultiplayerPeer changes:

- Adds is_server_relay_supported virtual method

Informs the upper MultiplayerAPI layer if it can signal peers connected
to the server to other clients, and perform packet relaying among them.

- Adds get_packet_channel and get_packet_mode virtual methods

Allows the MultiplayerAPI to retrieve the channel and transfer modes to
use when relaying the last received packet.

SceneMultiplayerPeer changes:

- Implement peer signaling and packet relaying when the MultiplayerPeer
  advertise they are supported.

ENet, WebRTC, WebSocket changes:

- Removed custom code for relaying from WebSocket and ENet, and let it
  be handled by the upper layer.
- Update WebRTC to split create_client, create_server, and create_mesh,
  with the latter behaving like the old initialize with
  "server_compatibility = false", and the first two supporting the upper
  layer relaying protocol.
This commit is contained in:
Fabio Alessandrelli
2022-10-08 20:50:19 +02:00
parent 03e5de37ae
commit 7536d15fe3
17 changed files with 465 additions and 446 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
modules/multiplayer/scene_cache_interface.cpp
View File

@@ -105,8 +105,7 @@ void SceneCacheInterface::process_simplify_path(int p_from, const uint8_t *p_pac
multiplayer_peer->set_transfer_channel(0);
multiplayer_peer->set_transfer_mode(MultiplayerPeer::TRANSFER_MODE_RELIABLE);
multiplayer_peer->set_target_peer(p_from);
multiplayer_peer->put_packet(packet.ptr(), packet.size());
multiplayer->send_command(p_from, packet.ptr(), packet.size());
}
void SceneCacheInterface::process_confirm_path(int p_from, const uint8_t *p_packet, int p_packet_len) {
@@ -162,10 +161,9 @@ Error SceneCacheInterface::_send_confirm_path(Node *p_node, NodePath p_path, Pat
Error err = OK;
for (int peer_id : p_peers) {
multiplayer_peer->set_target_peer(peer_id);
multiplayer_peer->set_transfer_channel(0);
multiplayer_peer->set_transfer_mode(MultiplayerPeer::TRANSFER_MODE_RELIABLE);
err = multiplayer_peer->put_packet(packet.ptr(), packet.size());
err = multiplayer->send_command(peer_id, packet.ptr(), packet.size());
ERR_FAIL_COND_V(err != OK, err);
// Insert into confirmed, but as false since it was not confirmed.
psc->confirmed_peers.insert(peer_id, false);