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208 | /**************************************************************************/
/* scene_multiplayer.h */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/**************************************************************************/
#ifndef SCENE_MULTIPLAYER_H
#define SCENE_MULTIPLAYER_H
#include "scene_cache_interface.h"
#include "scene_replication_interface.h"
#include "scene_rpc_interface.h"
#include "scene/main/multiplayer_api.h"
class OfflineMultiplayerPeer : public MultiplayerPeer {
GDCLASS(OfflineMultiplayerPeer, MultiplayerPeer);
public:
virtual int get_available_packet_count() const override { return 0; }
virtual Error get_packet(const uint8_t **r_buffer, int &r_buffer_size) override {
*r_buffer = nullptr;
r_buffer_size = 0;
return OK;
}
virtual Error put_packet(const uint8_t *p_buffer, int p_buffer_size) override { return OK; }
virtual int get_max_packet_size() const override { return 0; }
virtual void set_target_peer(int p_peer_id) override {}
virtual int get_packet_peer() const override { return 0; }
virtual TransferMode get_packet_mode() const override { return TRANSFER_MODE_RELIABLE; }
virtual int get_packet_channel() const override { return 0; }
virtual void disconnect_peer(int p_peer, bool p_force = false) override {}
virtual bool is_server() const override { return true; }
virtual void poll() override {}
virtual void close() override {}
virtual int get_unique_id() const override { return TARGET_PEER_SERVER; }
virtual ConnectionStatus get_connection_status() const override { return CONNECTION_CONNECTED; }
};
class SceneMultiplayer : public MultiplayerAPI {
GDCLASS(SceneMultiplayer, MultiplayerAPI);
public:
enum NetworkCommands {
NETWORK_COMMAND_REMOTE_CALL = 0,
NETWORK_COMMAND_SIMPLIFY_PATH,
NETWORK_COMMAND_CONFIRM_PATH,
NETWORK_COMMAND_RAW,
NETWORK_COMMAND_SPAWN,
NETWORK_COMMAND_DESPAWN,
NETWORK_COMMAND_SYNC,
NETWORK_COMMAND_SYS,
};
enum SysCommands {
SYS_COMMAND_AUTH,
SYS_COMMAND_ADD_PEER,
SYS_COMMAND_DEL_PEER,
SYS_COMMAND_RELAY,
};
enum {
SYS_CMD_SIZE = 6, // Command + sys command + peer_id (+ optional payload).
};
// For each command, the 4 MSB can contain custom flags, as defined by subsystems.
enum {
CMD_FLAG_0_SHIFT = 4,
CMD_FLAG_1_SHIFT = 5,
CMD_FLAG_2_SHIFT = 6,
CMD_FLAG_3_SHIFT = 7,
};
// This is the mask that will be used to extract the command.
enum {
CMD_MASK = 7, // 0x7 -> 0b00000111
};
private:
struct PendingPeer {
bool local = false;
bool remote = false;
uint64_t time = 0;
};
Ref<MultiplayerPeer> multiplayer_peer;
MultiplayerPeer::ConnectionStatus last_connection_status = MultiplayerPeer::CONNECTION_DISCONNECTED;
HashMap<int, PendingPeer> pending_peers; // true if locally finalized.
Callable auth_callback;
uint64_t auth_timeout = 3000;
HashSet<int> connected_peers;
int remote_sender_id = 0;
int remote_sender_override = 0;
Vector<uint8_t> packet_cache;
NodePath root_path;
bool allow_object_decoding = false;
bool server_relay = true;
Ref<StreamPeerBuffer> relay_buffer;
Ref<SceneCacheInterface> cache;
Ref<SceneReplicationInterface> replicator;
Ref<SceneRPCInterface> rpc;
#ifdef DEBUG_ENABLED
_FORCE_INLINE_ void _profile_bandwidth(const String &p_what, int p_value);
_FORCE_INLINE_ Error _send(const uint8_t *p_packet, int p_packet_len); // Also profiles.
#else
_FORCE_INLINE_ Error _send(const uint8_t *p_packet, int p_packet_len) {
return multiplayer_peer->put_packet(p_packet, p_packet_len);
}
#endif
protected:
static void _bind_methods();
void _process_packet(int p_from, const uint8_t *p_packet, int p_packet_len);
void _process_raw(int p_from, const uint8_t *p_packet, int p_packet_len);
void _process_sys(int p_from, const uint8_t *p_packet, int p_packet_len, MultiplayerPeer::TransferMode p_mode, int p_channel);
void _add_peer(int p_id);
void _admit_peer(int p_id);
void _del_peer(int p_id);
void _update_status();
public:
virtual void set_multiplayer_peer(const Ref<MultiplayerPeer> &p_peer) override;<--- set_multiplayer_peer is a virtual function
virtual Ref<MultiplayerPeer> get_multiplayer_peer() override;
virtual Error poll() override;
virtual int get_unique_id() override;
virtual Vector<int> get_peer_ids() override;
virtual int get_remote_sender_id() override { return remote_sender_override ? remote_sender_override : remote_sender_id; }
virtual Error rpcp(Object *p_obj, int p_peer_id, const StringName &p_method, const Variant **p_arg, int p_argcount) override;
virtual Error object_configuration_add(Object *p_obj, Variant p_config) override;
virtual Error object_configuration_remove(Object *p_obj, Variant p_config) override;
void clear();
// Usually from object_configuration_add/remove
void set_root_path(const NodePath &p_path);
NodePath get_root_path() const;
void disconnect_peer(int p_id);
Error send_auth(int p_to, Vector<uint8_t> p_bytes);
Error complete_auth(int p_peer);
void set_auth_callback(Callable p_callback);
Callable get_auth_callback() const;
void set_auth_timeout(double p_timeout);
double get_auth_timeout() const;
Vector<int> get_authenticating_peer_ids();
Error send_command(int p_to, const uint8_t *p_packet, int p_packet_len); // Used internally to relay packets when needed.
Error send_bytes(Vector<uint8_t> p_data, int p_to = MultiplayerPeer::TARGET_PEER_BROADCAST, MultiplayerPeer::TransferMode p_mode = MultiplayerPeer::TRANSFER_MODE_RELIABLE, int p_channel = 0);
String get_rpc_md5(const Object *p_obj);
const HashSet<int> get_connected_peers() const { return connected_peers; }
void set_remote_sender_override(int p_id) { remote_sender_override = p_id; }
void set_refuse_new_connections(bool p_refuse);
bool is_refusing_new_connections() const;
void set_allow_object_decoding(bool p_enable);
bool is_object_decoding_allowed() const;
void set_server_relay_enabled(bool p_enabled);
bool is_server_relay_enabled() const;
void set_max_sync_packet_size(int p_size);
int get_max_sync_packet_size() const;
void set_max_delta_packet_size(int p_size);
int get_max_delta_packet_size() const;
SceneMultiplayer();
~SceneMultiplayer();
};
#endif // SCENE_MULTIPLAYER_H
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