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7536d15fe3
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.
224 lines
8.7 KiB
C++
224 lines
8.7 KiB
C++
/*************************************************************************/
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/* multiplayer_peer.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 "multiplayer_peer.h"
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#include "core/os/os.h"
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uint32_t MultiplayerPeer::generate_unique_id() const {
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uint32_t hash = 0;
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while (hash == 0 || hash == 1) {
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hash = hash_murmur3_one_32(
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(uint32_t)OS::get_singleton()->get_ticks_usec());
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hash = hash_murmur3_one_32(
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(uint32_t)OS::get_singleton()->get_unix_time(), hash);
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hash = hash_murmur3_one_32(
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(uint32_t)OS::get_singleton()->get_user_data_dir().hash64(), hash);
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hash = hash_murmur3_one_32(
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(uint32_t)((uint64_t)this), hash); // Rely on ASLR heap
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hash = hash_murmur3_one_32(
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(uint32_t)((uint64_t)&hash), hash); // Rely on ASLR stack
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hash = hash_fmix32(hash);
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hash = hash & 0x7FFFFFFF; // Make it compatible with unsigned, since negative ID is used for exclusion
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}
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return hash;
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}
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void MultiplayerPeer::set_transfer_channel(int p_channel) {
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transfer_channel = p_channel;
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}
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int MultiplayerPeer::get_transfer_channel() const {
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return transfer_channel;
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}
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void MultiplayerPeer::set_transfer_mode(TransferMode p_mode) {
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transfer_mode = p_mode;
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}
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MultiplayerPeer::TransferMode MultiplayerPeer::get_transfer_mode() const {
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return transfer_mode;
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}
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void MultiplayerPeer::set_refuse_new_connections(bool p_enable) {
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refuse_connections = p_enable;
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}
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bool MultiplayerPeer::is_refusing_new_connections() const {
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return refuse_connections;
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}
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bool MultiplayerPeer::is_server_relay_supported() const {
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return false;
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}
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void MultiplayerPeer::_bind_methods() {
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ClassDB::bind_method(D_METHOD("set_transfer_channel", "channel"), &MultiplayerPeer::set_transfer_channel);
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ClassDB::bind_method(D_METHOD("get_transfer_channel"), &MultiplayerPeer::get_transfer_channel);
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ClassDB::bind_method(D_METHOD("set_transfer_mode", "mode"), &MultiplayerPeer::set_transfer_mode);
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ClassDB::bind_method(D_METHOD("get_transfer_mode"), &MultiplayerPeer::get_transfer_mode);
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ClassDB::bind_method(D_METHOD("set_target_peer", "id"), &MultiplayerPeer::set_target_peer);
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ClassDB::bind_method(D_METHOD("get_packet_peer"), &MultiplayerPeer::get_packet_peer);
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ClassDB::bind_method(D_METHOD("get_packet_channel"), &MultiplayerPeer::get_packet_channel);
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ClassDB::bind_method(D_METHOD("get_packet_mode"), &MultiplayerPeer::get_packet_mode);
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ClassDB::bind_method(D_METHOD("poll"), &MultiplayerPeer::poll);
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ClassDB::bind_method(D_METHOD("get_connection_status"), &MultiplayerPeer::get_connection_status);
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ClassDB::bind_method(D_METHOD("get_unique_id"), &MultiplayerPeer::get_unique_id);
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ClassDB::bind_method(D_METHOD("generate_unique_id"), &MultiplayerPeer::generate_unique_id);
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ClassDB::bind_method(D_METHOD("set_refuse_new_connections", "enable"), &MultiplayerPeer::set_refuse_new_connections);
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ClassDB::bind_method(D_METHOD("is_refusing_new_connections"), &MultiplayerPeer::is_refusing_new_connections);
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ClassDB::bind_method(D_METHOD("is_server_relay_supported"), &MultiplayerPeer::is_server_relay_supported);
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ADD_PROPERTY(PropertyInfo(Variant::BOOL, "refuse_new_connections"), "set_refuse_new_connections", "is_refusing_new_connections");
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ADD_PROPERTY(PropertyInfo(Variant::INT, "transfer_mode", PROPERTY_HINT_ENUM, "Unreliable,Unreliable Ordered,Reliable"), "set_transfer_mode", "get_transfer_mode");
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ADD_PROPERTY(PropertyInfo(Variant::INT, "transfer_channel", PROPERTY_HINT_RANGE, "0,255,1"), "set_transfer_channel", "get_transfer_channel");
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BIND_ENUM_CONSTANT(CONNECTION_DISCONNECTED);
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BIND_ENUM_CONSTANT(CONNECTION_CONNECTING);
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BIND_ENUM_CONSTANT(CONNECTION_CONNECTED);
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BIND_CONSTANT(TARGET_PEER_BROADCAST);
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BIND_CONSTANT(TARGET_PEER_SERVER);
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BIND_ENUM_CONSTANT(TRANSFER_MODE_UNRELIABLE);
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BIND_ENUM_CONSTANT(TRANSFER_MODE_UNRELIABLE_ORDERED);
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BIND_ENUM_CONSTANT(TRANSFER_MODE_RELIABLE);
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ADD_SIGNAL(MethodInfo("peer_connected", PropertyInfo(Variant::INT, "id")));
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ADD_SIGNAL(MethodInfo("peer_disconnected", PropertyInfo(Variant::INT, "id")));
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ADD_SIGNAL(MethodInfo("server_disconnected"));
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ADD_SIGNAL(MethodInfo("connection_succeeded"));
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ADD_SIGNAL(MethodInfo("connection_failed"));
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}
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/*************/
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Error MultiplayerPeerExtension::get_packet(const uint8_t **r_buffer, int &r_buffer_size) {
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Error err;
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if (GDVIRTUAL_CALL(_get_packet, r_buffer, &r_buffer_size, err)) {
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return err;
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}
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if (GDVIRTUAL_IS_OVERRIDDEN(_get_packet_script)) {
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if (!GDVIRTUAL_CALL(_get_packet_script, script_buffer)) {
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return FAILED;
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}
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if (script_buffer.size() == 0) {
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return Error::ERR_UNAVAILABLE;
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}
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*r_buffer = script_buffer.ptr();
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r_buffer_size = script_buffer.size();
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return Error::OK;
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}
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WARN_PRINT_ONCE("MultiplayerPeerExtension::_get_packet_native is unimplemented!");
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return FAILED;
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}
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Error MultiplayerPeerExtension::put_packet(const uint8_t *p_buffer, int p_buffer_size) {
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Error err;
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if (GDVIRTUAL_CALL(_put_packet, p_buffer, p_buffer_size, err)) {
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return err;
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}
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if (GDVIRTUAL_IS_OVERRIDDEN(_put_packet_script)) {
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PackedByteArray a;
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a.resize(p_buffer_size);
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memcpy(a.ptrw(), p_buffer, p_buffer_size);
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if (!GDVIRTUAL_CALL(_put_packet_script, a, err)) {
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return FAILED;
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}
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return (Error)err;
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}
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WARN_PRINT_ONCE("MultiplayerPeerExtension::_put_packet_native is unimplemented!");
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return FAILED;
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}
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void MultiplayerPeerExtension::set_refuse_new_connections(bool p_enable) {
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if (GDVIRTUAL_CALL(_set_refuse_new_connections, p_enable)) {
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return;
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}
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MultiplayerPeer::set_refuse_new_connections(p_enable);
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}
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bool MultiplayerPeerExtension::is_refusing_new_connections() const {
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bool refusing;
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if (GDVIRTUAL_CALL(_is_refusing_new_connections, refusing)) {
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return refusing;
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}
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return MultiplayerPeer::is_refusing_new_connections();
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}
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bool MultiplayerPeerExtension::is_server_relay_supported() const {
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bool can_relay;
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if (GDVIRTUAL_CALL(_is_server_relay_supported, can_relay)) {
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return can_relay;
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}
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return MultiplayerPeer::is_server_relay_supported();
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}
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void MultiplayerPeerExtension::_bind_methods() {
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GDVIRTUAL_BIND(_get_packet, "r_buffer", "r_buffer_size");
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GDVIRTUAL_BIND(_put_packet, "p_buffer", "p_buffer_size");
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GDVIRTUAL_BIND(_get_available_packet_count);
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GDVIRTUAL_BIND(_get_max_packet_size);
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GDVIRTUAL_BIND(_get_packet_script)
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GDVIRTUAL_BIND(_put_packet_script, "p_buffer");
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GDVIRTUAL_BIND(_set_transfer_channel, "p_channel");
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GDVIRTUAL_BIND(_get_transfer_channel);
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GDVIRTUAL_BIND(_set_transfer_mode, "p_mode");
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GDVIRTUAL_BIND(_get_transfer_mode);
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GDVIRTUAL_BIND(_set_target_peer, "p_peer");
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GDVIRTUAL_BIND(_get_packet_peer);
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GDVIRTUAL_BIND(_is_server);
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GDVIRTUAL_BIND(_poll);
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GDVIRTUAL_BIND(_get_unique_id);
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GDVIRTUAL_BIND(_set_refuse_new_connections, "p_enable");
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GDVIRTUAL_BIND(_is_refusing_new_connections);
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GDVIRTUAL_BIND(_get_connection_status);
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ADD_PROPERTY_DEFAULT("transfer_mode", TRANSFER_MODE_RELIABLE);
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ADD_PROPERTY_DEFAULT("transfer_channel", 0);
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}
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