ddee5f6050
MultiplayerSynchronizers can now be configured to limit their visibility to a subset of the connected peers, if the synchronized node was spawned by a MultiplayerSpawner (either automatically or via custom spawn) the given node will also be despawned remotely. The replication system doesn't have the logic to handle subspawn directly, but it is possible to handle them appropriately by manually updating the visibility of the parent before changing the one of the nested spawns via the "update_visibility" function. The visibility of each MultiplayerSynchronizer can be controlled by adding or remove filters via "[add|remove]_visibility_filter(callable)". To further optimize the network code, visibility filters can be configured to be automatically updated during idle or physics frame, or set to always require manual update (via the "update_visibility" function).
533 lines
21 KiB
C++
533 lines
21 KiB
C++
/*************************************************************************/
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/* scene_replication_interface.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "scene_replication_interface.h"
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#include "core/io/marshalls.h"
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#include "scene/main/node.h"
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#include "scene/multiplayer/multiplayer_spawner.h"
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#include "scene/multiplayer/multiplayer_synchronizer.h"
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#define MAKE_ROOM(m_amount) \
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if (packet_cache.size() < m_amount) \
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packet_cache.resize(m_amount);
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MultiplayerReplicationInterface *SceneReplicationInterface::_create(MultiplayerAPI *p_multiplayer) {
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return memnew(SceneReplicationInterface(p_multiplayer));
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}
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void SceneReplicationInterface::make_default() {
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MultiplayerAPI::create_default_replication_interface = _create;
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}
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void SceneReplicationInterface::_free_remotes(int p_id) {
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const HashMap<uint32_t, ObjectID> remotes = rep_state->peer_get_remotes(p_id);
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for (const KeyValue<uint32_t, ObjectID> &E : remotes) {
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Node *node = rep_state->get_node(E.value);
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ERR_CONTINUE(!node);
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node->queue_delete();
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}
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}
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void SceneReplicationInterface::on_peer_change(int p_id, bool p_connected) {
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if (p_connected) {
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rep_state->on_peer_change(p_id, p_connected);
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for (const ObjectID &oid : rep_state->get_spawned_nodes()) {
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_update_spawn_visibility(p_id, oid);
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}
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for (const ObjectID &oid : rep_state->get_synced_nodes()) {
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MultiplayerSynchronizer *sync = rep_state->get_synchronizer(oid);
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ERR_CONTINUE(!sync); // ERR_BUG
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if (sync->is_multiplayer_authority()) {
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_update_sync_visibility(p_id, oid);
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}
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}
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} else {
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_free_remotes(p_id);
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rep_state->on_peer_change(p_id, p_connected);
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}
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}
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void SceneReplicationInterface::on_reset() {
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for (int pid : rep_state->get_peers()) {
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_free_remotes(pid);
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}
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rep_state->reset();
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}
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void SceneReplicationInterface::on_network_process() {
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uint64_t msec = OS::get_singleton()->get_ticks_msec();
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for (int peer : rep_state->get_peers()) {
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_send_sync(peer, msec);
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}
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}
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Error SceneReplicationInterface::on_spawn(Object *p_obj, Variant p_config) {
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Node *node = Object::cast_to<Node>(p_obj);
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ERR_FAIL_COND_V(!node || p_config.get_type() != Variant::OBJECT, ERR_INVALID_PARAMETER);
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MultiplayerSpawner *spawner = Object::cast_to<MultiplayerSpawner>(p_config.get_validated_object());
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ERR_FAIL_COND_V(!spawner, ERR_INVALID_PARAMETER);
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Error err = rep_state->config_add_spawn(node, spawner);
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ERR_FAIL_COND_V(err != OK, err);
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const ObjectID oid = node->get_instance_id();
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if (multiplayer->has_multiplayer_peer() && spawner->is_multiplayer_authority()) {
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rep_state->ensure_net_id(oid);
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_update_spawn_visibility(0, oid);
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}
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ERR_FAIL_COND_V(err != OK, err);
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return OK;
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}
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Error SceneReplicationInterface::on_despawn(Object *p_obj, Variant p_config) {
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Node *node = Object::cast_to<Node>(p_obj);
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ERR_FAIL_COND_V(!node || p_config.get_type() != Variant::OBJECT, ERR_INVALID_PARAMETER);
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MultiplayerSpawner *spawner = Object::cast_to<MultiplayerSpawner>(p_config.get_validated_object());
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ERR_FAIL_COND_V(!p_obj || !spawner, ERR_INVALID_PARAMETER);
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// Forcibly despawn to all peers that knowns me.
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int len = 0;
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Error err = _make_despawn_packet(node, len);
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ERR_FAIL_COND_V(err != OK, ERR_BUG);
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const ObjectID oid = p_obj->get_instance_id();
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for (int pid : rep_state->get_peers()) {
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if (!rep_state->is_peer_spawn(pid, oid)) {
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continue;
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}
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_send_raw(packet_cache.ptr(), len, pid, true);
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}
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// Also remove spawner tracking from the replication state.
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return rep_state->config_del_spawn(node, spawner);
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}
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Error SceneReplicationInterface::on_replication_start(Object *p_obj, Variant p_config) {
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Node *node = Object::cast_to<Node>(p_obj);
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ERR_FAIL_COND_V(!node || p_config.get_type() != Variant::OBJECT, ERR_INVALID_PARAMETER);
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MultiplayerSynchronizer *sync = Object::cast_to<MultiplayerSynchronizer>(p_config.get_validated_object());
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ERR_FAIL_COND_V(!sync, ERR_INVALID_PARAMETER);
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// Add to synchronizer list and setup visibility.
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rep_state->config_add_sync(node, sync);
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const ObjectID oid = node->get_instance_id();
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sync->connect("visibility_changed", callable_mp(this, &SceneReplicationInterface::_visibility_changed), varray(oid));
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if (multiplayer->has_multiplayer_peer() && sync->is_multiplayer_authority()) {
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_update_sync_visibility(0, oid);
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}
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// Try to apply initial state if spawning (hack to apply if before ready).
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if (pending_spawn == p_obj->get_instance_id()) {
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pending_spawn = ObjectID(); // Make sure this only happens once.
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const List<NodePath> props = sync->get_replication_config()->get_spawn_properties();
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Vector<Variant> vars;
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vars.resize(props.size());
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int consumed;
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Error err = MultiplayerAPI::decode_and_decompress_variants(vars, pending_buffer, pending_buffer_size, consumed);
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ERR_FAIL_COND_V(err, err);
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err = MultiplayerSynchronizer::set_state(props, node, vars);
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ERR_FAIL_COND_V(err, err);
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}
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return OK;
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}
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Error SceneReplicationInterface::on_replication_stop(Object *p_obj, Variant p_config) {
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Node *node = Object::cast_to<Node>(p_obj);
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ERR_FAIL_COND_V(!node || p_config.get_type() != Variant::OBJECT, ERR_INVALID_PARAMETER);
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MultiplayerSynchronizer *sync = Object::cast_to<MultiplayerSynchronizer>(p_config.get_validated_object());
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ERR_FAIL_COND_V(!sync, ERR_INVALID_PARAMETER);
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sync->disconnect("visibility_changed", callable_mp(this, &SceneReplicationInterface::_visibility_changed));
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return rep_state->config_del_sync(node, sync);
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}
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void SceneReplicationInterface::_visibility_changed(int p_peer, ObjectID p_oid) {
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if (rep_state->is_spawned_node(p_oid)) {
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_update_spawn_visibility(p_peer, p_oid);
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}
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if (rep_state->is_synced_node(p_oid)) {
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_update_sync_visibility(p_peer, p_oid);
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}
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}
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Error SceneReplicationInterface::_update_sync_visibility(int p_peer, const ObjectID &p_oid) {
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MultiplayerSynchronizer *sync = rep_state->get_synchronizer(p_oid);
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ERR_FAIL_COND_V(!sync || !sync->is_multiplayer_authority(), ERR_BUG);
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bool is_visible = sync->is_visible_to(p_peer);
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if (p_peer == 0) {
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for (int pid : rep_state->get_peers()) {
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// Might be visible to this specific peer.
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is_visible = is_visible || sync->is_visible_to(pid);
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if (rep_state->is_peer_sync(pid, p_oid) == is_visible) {
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continue;
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}
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if (is_visible) {
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rep_state->peer_add_sync(pid, p_oid);
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} else {
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rep_state->peer_del_sync(pid, p_oid);
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}
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}
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return OK;
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} else {
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if (is_visible == rep_state->is_peer_sync(p_peer, p_oid)) {
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return OK;
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}
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if (is_visible) {
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return rep_state->peer_add_sync(p_peer, p_oid);
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} else {
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return rep_state->peer_del_sync(p_peer, p_oid);
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}
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}
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}
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Error SceneReplicationInterface::_update_spawn_visibility(int p_peer, const ObjectID &p_oid) {
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MultiplayerSpawner *spawner = rep_state->get_spawner(p_oid);
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MultiplayerSynchronizer *sync = rep_state->get_synchronizer(p_oid);
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Node *node = Object::cast_to<Node>(ObjectDB::get_instance(p_oid));
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ERR_FAIL_COND_V(!node || !spawner || !spawner->is_multiplayer_authority(), ERR_BUG);
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bool is_visible = !sync || sync->is_visible_to(p_peer);
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// Spawn (and despawn) when needed.
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HashSet<int> to_spawn;
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HashSet<int> to_despawn;
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if (p_peer) {
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if (is_visible == rep_state->is_peer_spawn(p_peer, p_oid)) {
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return OK;
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}
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if (is_visible) {
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to_spawn.insert(p_peer);
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} else {
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to_despawn.insert(p_peer);
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}
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} else {
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// Check visibility for each peers.
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for (int pid : rep_state->get_peers()) {
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bool peer_visible = is_visible || sync->is_visible_to(pid);
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if (peer_visible == rep_state->is_peer_spawn(pid, p_oid)) {
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continue;
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}
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if (peer_visible) {
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to_spawn.insert(pid);
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} else {
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to_despawn.insert(pid);
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}
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}
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}
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if (to_spawn.size()) {
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int len = 0;
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_make_spawn_packet(node, len);
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for (int pid : to_spawn) {
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int path_id;
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multiplayer->send_object_cache(spawner, pid, path_id);
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_send_raw(packet_cache.ptr(), len, pid, true);
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rep_state->peer_add_spawn(pid, p_oid);
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}
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}
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if (to_despawn.size()) {
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int len = 0;
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_make_despawn_packet(node, len);
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for (int pid : to_despawn) {
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rep_state->peer_del_spawn(pid, p_oid);
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_send_raw(packet_cache.ptr(), len, pid, true);
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}
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}
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return OK;
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}
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Error SceneReplicationInterface::_send_raw(const uint8_t *p_buffer, int p_size, int p_peer, bool p_reliable) {
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ERR_FAIL_COND_V(!p_buffer || p_size < 1, ERR_INVALID_PARAMETER);
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ERR_FAIL_COND_V(!multiplayer, ERR_UNCONFIGURED);
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ERR_FAIL_COND_V(!multiplayer->has_multiplayer_peer(), ERR_UNCONFIGURED);
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#ifdef DEBUG_ENABLED
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multiplayer->profile_bandwidth("out", p_size);
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#endif
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Ref<MultiplayerPeer> peer = multiplayer->get_multiplayer_peer();
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peer->set_target_peer(p_peer);
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peer->set_transfer_channel(0);
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peer->set_transfer_mode(p_reliable ? Multiplayer::TRANSFER_MODE_RELIABLE : Multiplayer::TRANSFER_MODE_UNRELIABLE);
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return peer->put_packet(p_buffer, p_size);
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}
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Error SceneReplicationInterface::_make_spawn_packet(Node *p_node, int &r_len) {
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ERR_FAIL_COND_V(!multiplayer, ERR_BUG);
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const ObjectID oid = p_node->get_instance_id();
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MultiplayerSpawner *spawner = rep_state->get_spawner(oid);
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ERR_FAIL_COND_V(!spawner || !p_node, ERR_BUG);
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uint32_t nid = rep_state->get_net_id(oid);
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ERR_FAIL_COND_V(!nid, ERR_UNCONFIGURED);
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// Prepare custom arg and scene_id
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uint8_t scene_id = spawner->find_spawnable_scene_index_from_object(oid);
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bool is_custom = scene_id == MultiplayerSpawner::INVALID_ID;
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Variant spawn_arg = spawner->get_spawn_argument(oid);
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int spawn_arg_size = 0;
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if (is_custom) {
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Error err = MultiplayerAPI::encode_and_compress_variant(spawn_arg, nullptr, spawn_arg_size, false);
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ERR_FAIL_COND_V(err, err);
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}
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// Prepare spawn state.
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int state_size = 0;
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Vector<Variant> state_vars;
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Vector<const Variant *> state_varp;
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MultiplayerSynchronizer *synchronizer = rep_state->get_synchronizer(oid);
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if (synchronizer) {
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ERR_FAIL_COND_V(synchronizer->get_replication_config().is_null(), ERR_BUG);
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const List<NodePath> props = synchronizer->get_replication_config()->get_spawn_properties();
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Error err = MultiplayerSynchronizer::get_state(props, p_node, state_vars, state_varp);
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ERR_FAIL_COND_V_MSG(err != OK, err, "Unable to retrieve spawn state.");
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err = MultiplayerAPI::encode_and_compress_variants(state_varp.ptrw(), state_varp.size(), nullptr, state_size);
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ERR_FAIL_COND_V_MSG(err != OK, err, "Unable to encode spawn state.");
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}
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// Encode scene ID, path ID, net ID, node name.
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int path_id = multiplayer->make_object_cache(spawner);
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CharString cname = p_node->get_name().operator String().utf8();
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int nlen = encode_cstring(cname.get_data(), nullptr);
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MAKE_ROOM(1 + 1 + 4 + 4 + 4 + nlen + (is_custom ? 4 + spawn_arg_size : 0) + state_size);
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uint8_t *ptr = packet_cache.ptrw();
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ptr[0] = (uint8_t)MultiplayerAPI::NETWORK_COMMAND_SPAWN;
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ptr[1] = scene_id;
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int ofs = 2;
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ofs += encode_uint32(path_id, &ptr[ofs]);
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ofs += encode_uint32(nid, &ptr[ofs]);
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ofs += encode_uint32(nlen, &ptr[ofs]);
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ofs += encode_cstring(cname.get_data(), &ptr[ofs]);
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// Write args
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if (is_custom) {
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ofs += encode_uint32(spawn_arg_size, &ptr[ofs]);
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Error err = MultiplayerAPI::encode_and_compress_variant(spawn_arg, &ptr[ofs], spawn_arg_size, false);
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ERR_FAIL_COND_V(err, err);
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ofs += spawn_arg_size;
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}
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// Write state.
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if (state_size) {
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Error err = MultiplayerAPI::encode_and_compress_variants(state_varp.ptrw(), state_varp.size(), &ptr[ofs], state_size);
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ERR_FAIL_COND_V(err, err);
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ofs += state_size;
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}
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r_len = ofs;
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return OK;
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}
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Error SceneReplicationInterface::_make_despawn_packet(Node *p_node, int &r_len) {
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const ObjectID oid = p_node->get_instance_id();
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MAKE_ROOM(5);
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uint8_t *ptr = packet_cache.ptrw();
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ptr[0] = (uint8_t)MultiplayerAPI::NETWORK_COMMAND_DESPAWN;
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int ofs = 1;
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uint32_t nid = rep_state->get_net_id(oid);
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ofs += encode_uint32(nid, &ptr[ofs]);
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r_len = ofs;
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return OK;
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}
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Error SceneReplicationInterface::on_spawn_receive(int p_from, const uint8_t *p_buffer, int p_buffer_len) {
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ERR_FAIL_COND_V_MSG(p_buffer_len < 14, ERR_INVALID_DATA, "Invalid spawn packet received");
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int ofs = 1; // The spawn/despawn command.
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uint8_t scene_id = p_buffer[ofs];
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ofs += 1;
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uint32_t node_target = decode_uint32(&p_buffer[ofs]);
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ofs += 4;
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MultiplayerSpawner *spawner = Object::cast_to<MultiplayerSpawner>(multiplayer->get_cached_object(p_from, node_target));
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ERR_FAIL_COND_V(!spawner, ERR_DOES_NOT_EXIST);
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ERR_FAIL_COND_V(p_from != spawner->get_multiplayer_authority(), ERR_UNAUTHORIZED);
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uint32_t net_id = decode_uint32(&p_buffer[ofs]);
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ofs += 4;
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uint32_t name_len = decode_uint32(&p_buffer[ofs]);
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ofs += 4;
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ERR_FAIL_COND_V_MSG(name_len > uint32_t(p_buffer_len - ofs), ERR_INVALID_DATA, vformat("Invalid spawn packet size: %d, wants: %d", p_buffer_len, ofs + name_len));
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ERR_FAIL_COND_V_MSG(name_len < 1, ERR_INVALID_DATA, "Zero spawn name size.");
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// We need to make sure no trickery happens here, but we want to allow autogenerated ("@") node names.
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const String name = String::utf8((const char *)&p_buffer[ofs], name_len);
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ERR_FAIL_COND_V_MSG(name.validate_node_name() != name, ERR_INVALID_DATA, vformat("Invalid node name received: '%s'. Make sure to add nodes via 'add_child(node, true)' remotely.", name));
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ofs += name_len;
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// Check that we can spawn.
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Node *parent = spawner->get_node_or_null(spawner->get_spawn_path());
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ERR_FAIL_COND_V(!parent, ERR_UNCONFIGURED);
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ERR_FAIL_COND_V(parent->has_node(name), ERR_INVALID_DATA);
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Node *node = nullptr;
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if (scene_id == MultiplayerSpawner::INVALID_ID) {
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// Custom spawn.
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ERR_FAIL_COND_V(p_buffer_len - ofs < 4, ERR_INVALID_DATA);
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uint32_t arg_size = decode_uint32(&p_buffer[ofs]);
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ofs += 4;
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ERR_FAIL_COND_V(arg_size > uint32_t(p_buffer_len - ofs), ERR_INVALID_DATA);
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Variant v;
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Error err = MultiplayerAPI::decode_and_decompress_variant(v, &p_buffer[ofs], arg_size, nullptr, false);
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ERR_FAIL_COND_V(err != OK, err);
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ofs += arg_size;
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node = spawner->instantiate_custom(v);
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} else {
|
|
// Scene based spawn.
|
|
node = spawner->instantiate_scene(scene_id);
|
|
}
|
|
ERR_FAIL_COND_V(!node, ERR_UNAUTHORIZED);
|
|
node->set_name(name);
|
|
rep_state->peer_add_remote(p_from, net_id, node, spawner);
|
|
// The initial state will be applied during the sync config (i.e. before _ready).
|
|
int state_len = p_buffer_len - ofs;
|
|
if (state_len) {
|
|
pending_spawn = node->get_instance_id();
|
|
pending_buffer = &p_buffer[ofs];
|
|
pending_buffer_size = state_len;
|
|
}
|
|
parent->add_child(node);
|
|
pending_spawn = ObjectID();
|
|
pending_buffer = nullptr;
|
|
pending_buffer_size = 0;
|
|
return OK;
|
|
}
|
|
|
|
Error SceneReplicationInterface::on_despawn_receive(int p_from, const uint8_t *p_buffer, int p_buffer_len) {
|
|
ERR_FAIL_COND_V_MSG(p_buffer_len < 5, ERR_INVALID_DATA, "Invalid spawn packet received");
|
|
int ofs = 1; // The spawn/despawn command.
|
|
uint32_t net_id = decode_uint32(&p_buffer[ofs]);
|
|
ofs += 4;
|
|
Node *node = nullptr;
|
|
Error err = rep_state->peer_del_remote(p_from, net_id, &node);
|
|
ERR_FAIL_COND_V(err != OK, err);
|
|
ERR_FAIL_COND_V(!node, ERR_BUG);
|
|
if (node->get_parent() != nullptr) {
|
|
node->get_parent()->remove_child(node);
|
|
}
|
|
node->queue_delete();
|
|
return OK;
|
|
}
|
|
|
|
void SceneReplicationInterface::_send_sync(int p_peer, uint64_t p_msec) {
|
|
const HashSet<ObjectID> &to_sync = rep_state->get_peer_sync_nodes(p_peer);
|
|
if (to_sync.is_empty()) {
|
|
return;
|
|
}
|
|
MAKE_ROOM(sync_mtu);
|
|
uint8_t *ptr = packet_cache.ptrw();
|
|
ptr[0] = MultiplayerAPI::NETWORK_COMMAND_SYNC;
|
|
int ofs = 1;
|
|
ofs += encode_uint16(rep_state->peer_sync_next(p_peer), &ptr[1]);
|
|
// Can only send updates for already notified nodes.
|
|
// This is a lazy implementation, we could optimize much more here with by grouping by replication config.
|
|
for (const ObjectID &oid : to_sync) {
|
|
if (!rep_state->update_sync_time(oid, p_msec)) {
|
|
continue; // nothing to sync.
|
|
}
|
|
MultiplayerSynchronizer *sync = rep_state->get_synchronizer(oid);
|
|
ERR_CONTINUE(!sync || !sync->get_replication_config().is_valid());
|
|
Node *node = rep_state->get_node(oid);
|
|
ERR_CONTINUE(!node);
|
|
uint32_t net_id = rep_state->get_net_id(oid);
|
|
if (net_id == 0 || (net_id & 0x80000000)) {
|
|
int path_id = 0;
|
|
bool verified = multiplayer->send_object_cache(sync, p_peer, path_id);
|
|
ERR_CONTINUE_MSG(path_id < 0, "This should never happen!");
|
|
if (net_id == 0) {
|
|
// First time path based ID.
|
|
net_id = path_id | 0x80000000;
|
|
rep_state->set_net_id(oid, net_id | 0x80000000);
|
|
}
|
|
if (!verified) {
|
|
// The path based sync is not yet confirmed, skipping.
|
|
continue;
|
|
}
|
|
}
|
|
int size;
|
|
Vector<Variant> vars;
|
|
Vector<const Variant *> varp;
|
|
const List<NodePath> props = sync->get_replication_config()->get_sync_properties();
|
|
Error err = MultiplayerSynchronizer::get_state(props, node, vars, varp);
|
|
ERR_CONTINUE_MSG(err != OK, "Unable to retrieve sync state.");
|
|
err = MultiplayerAPI::encode_and_compress_variants(varp.ptrw(), varp.size(), nullptr, size);
|
|
ERR_CONTINUE_MSG(err != OK, "Unable to encode sync state.");
|
|
// TODO Handle single state above MTU.
|
|
ERR_CONTINUE_MSG(size > 3 + 4 + 4 + sync_mtu, vformat("Node states bigger then MTU will not be sent (%d > %d): %s", size, sync_mtu, node->get_path()));
|
|
if (ofs + 4 + 4 + size > sync_mtu) {
|
|
// Send what we got, and reset write.
|
|
_send_raw(packet_cache.ptr(), ofs, p_peer, false);
|
|
ofs = 3;
|
|
}
|
|
if (size) {
|
|
ofs += encode_uint32(rep_state->get_net_id(oid), &ptr[ofs]);
|
|
ofs += encode_uint32(size, &ptr[ofs]);
|
|
MultiplayerAPI::encode_and_compress_variants(varp.ptrw(), varp.size(), &ptr[ofs], size);
|
|
ofs += size;
|
|
}
|
|
}
|
|
if (ofs > 3) {
|
|
// Got some left over to send.
|
|
_send_raw(packet_cache.ptr(), ofs, p_peer, false);
|
|
}
|
|
}
|
|
|
|
Error SceneReplicationInterface::on_sync_receive(int p_from, const uint8_t *p_buffer, int p_buffer_len) {
|
|
ERR_FAIL_COND_V_MSG(p_buffer_len < 11, ERR_INVALID_DATA, "Invalid sync packet received");
|
|
uint16_t time = decode_uint16(&p_buffer[1]);
|
|
int ofs = 3;
|
|
rep_state->peer_sync_recv(p_from, time);
|
|
while (ofs + 8 < p_buffer_len) {
|
|
uint32_t net_id = decode_uint32(&p_buffer[ofs]);
|
|
ofs += 4;
|
|
uint32_t size = decode_uint32(&p_buffer[ofs]);
|
|
ofs += 4;
|
|
Node *node = nullptr;
|
|
if (net_id & 0x80000000) {
|
|
MultiplayerSynchronizer *sync = Object::cast_to<MultiplayerSynchronizer>(multiplayer->get_cached_object(p_from, net_id & 0x7FFFFFFF));
|
|
ERR_FAIL_COND_V(!sync || sync->get_multiplayer_authority() != p_from, ERR_UNAUTHORIZED);
|
|
node = sync->get_node(sync->get_root_path());
|
|
} else {
|
|
node = rep_state->peer_get_remote(p_from, net_id);
|
|
}
|
|
if (!node) {
|
|
// Not received yet.
|
|
ofs += size;
|
|
continue;
|
|
}
|
|
const ObjectID oid = node->get_instance_id();
|
|
if (!rep_state->update_last_node_sync(oid, time)) {
|
|
// State is too old.
|
|
ofs += size;
|
|
continue;
|
|
}
|
|
MultiplayerSynchronizer *sync = rep_state->get_synchronizer(oid);
|
|
ERR_FAIL_COND_V(!sync, ERR_BUG);
|
|
ERR_FAIL_COND_V(size > uint32_t(p_buffer_len - ofs), ERR_BUG);
|
|
const List<NodePath> props = sync->get_replication_config()->get_sync_properties();
|
|
Vector<Variant> vars;
|
|
vars.resize(props.size());
|
|
int consumed;
|
|
Error err = MultiplayerAPI::decode_and_decompress_variants(vars, &p_buffer[ofs], size, consumed);
|
|
ERR_FAIL_COND_V(err, err);
|
|
err = MultiplayerSynchronizer::set_state(props, node, vars);
|
|
ERR_FAIL_COND_V(err, err);
|
|
ofs += size;
|
|
}
|
|
return OK;
|
|
}
|