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										 |  |  | /**************************************************************************/ | 
					
						
							|  |  |  | /*  scene_replication_interface.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.                 */ | 
					
						
							|  |  |  | /**************************************************************************/ | 
					
						
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										 |  |  | #ifndef SCENE_REPLICATION_INTERFACE_H
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							|  |  |  | #define SCENE_REPLICATION_INTERFACE_H
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										 |  |  | #include "multiplayer_spawner.h"
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							|  |  |  | #include "multiplayer_synchronizer.h"
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										 |  |  | #include "core/object/ref_counted.h"
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										 |  |  | class SceneMultiplayer; | 
					
						
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										 |  |  | class SceneCacheInterface; | 
					
						
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							|  |  |  | class SceneReplicationInterface : public RefCounted { | 
					
						
							|  |  |  | 	GDCLASS(SceneReplicationInterface, RefCounted); | 
					
						
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							|  |  |  | private: | 
					
						
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										 |  |  | 	struct TrackedNode { | 
					
						
							|  |  |  | 		ObjectID id; | 
					
						
							|  |  |  | 		uint32_t net_id = 0; | 
					
						
							|  |  |  | 		uint32_t remote_peer = 0; | 
					
						
							|  |  |  | 		ObjectID spawner; | 
					
						
							|  |  |  | 		HashSet<ObjectID> synchronizers; | 
					
						
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										 |  |  | 		bool operator==(const ObjectID &p_other) { return id == p_other; } | 
					
						
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										 |  |  | 		TrackedNode() {} | 
					
						
							|  |  |  | 		TrackedNode(const ObjectID &p_id) { id = p_id; } | 
					
						
							|  |  |  | 		TrackedNode(const ObjectID &p_id, uint32_t p_net_id) { | 
					
						
							|  |  |  | 			id = p_id; | 
					
						
							|  |  |  | 			net_id = p_net_id; | 
					
						
							|  |  |  | 		} | 
					
						
							|  |  |  | 	}; | 
					
						
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							|  |  |  | 	struct PeerInfo { | 
					
						
							|  |  |  | 		HashSet<ObjectID> sync_nodes; | 
					
						
							|  |  |  | 		HashSet<ObjectID> spawn_nodes; | 
					
						
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										 |  |  | 		HashMap<ObjectID, uint64_t> last_watch_usecs; | 
					
						
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										 |  |  | 		HashMap<uint32_t, ObjectID> recv_sync_ids; | 
					
						
							|  |  |  | 		HashMap<uint32_t, ObjectID> recv_nodes; | 
					
						
							|  |  |  | 		uint16_t last_sent_sync = 0; | 
					
						
							|  |  |  | 	}; | 
					
						
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							|  |  |  | 	// Replication state.
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							|  |  |  | 	HashMap<int, PeerInfo> peers_info; | 
					
						
							|  |  |  | 	uint32_t last_net_id = 0; | 
					
						
							|  |  |  | 	HashMap<ObjectID, TrackedNode> tracked_nodes; | 
					
						
							|  |  |  | 	HashSet<ObjectID> spawned_nodes; | 
					
						
							|  |  |  | 	HashSet<ObjectID> sync_nodes; | 
					
						
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										 |  |  | 	// Pending local spawn information (handles spawning nested nodes during ready).
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							|  |  |  | 	HashSet<ObjectID> spawn_queue; | 
					
						
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							|  |  |  | 	// Pending remote spawn information.
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										 |  |  | 	ObjectID pending_spawn; | 
					
						
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										 |  |  | 	int pending_spawn_remote = 0; | 
					
						
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										 |  |  | 	const uint8_t *pending_buffer = nullptr; | 
					
						
							|  |  |  | 	int pending_buffer_size = 0; | 
					
						
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										 |  |  | 	List<uint32_t> pending_sync_net_ids; | 
					
						
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							|  |  |  | 	// Replicator config.
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							|  |  |  | 	SceneMultiplayer *multiplayer = nullptr; | 
					
						
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										 |  |  | 	SceneCacheInterface *multiplayer_cache = nullptr; | 
					
						
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										 |  |  | 	PackedByteArray packet_cache; | 
					
						
							|  |  |  | 	int sync_mtu = 1350; // Highly dependent on underlying protocol.
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										 |  |  | 	int delta_mtu = 65535; | 
					
						
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							|  |  |  | 	TrackedNode &_track(const ObjectID &p_id); | 
					
						
							|  |  |  | 	void _untrack(const ObjectID &p_id); | 
					
						
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										 |  |  | 	void _node_ready(const ObjectID &p_oid); | 
					
						
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										 |  |  | 	bool _has_authority(const Node *p_node); | 
					
						
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										 |  |  | 	bool _verify_synchronizer(int p_peer, MultiplayerSynchronizer *p_sync, uint32_t &r_net_id); | 
					
						
							|  |  |  | 	MultiplayerSynchronizer *_find_synchronizer(int p_peer, uint32_t p_net_ida); | 
					
						
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										 |  |  | 	void _send_sync(int p_peer, const HashSet<ObjectID> &p_synchronizers, uint16_t p_sync_net_time, uint64_t p_usec); | 
					
						
							|  |  |  | 	void _send_delta(int p_peer, const HashSet<ObjectID> &p_synchronizers, uint64_t p_usec, const HashMap<ObjectID, uint64_t> &p_last_watch_usecs); | 
					
						
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										 |  |  | 	Error _make_spawn_packet(Node *p_node, MultiplayerSpawner *p_spawner, int &r_len); | 
					
						
							|  |  |  | 	Error _make_despawn_packet(Node *p_node, int &r_len); | 
					
						
							|  |  |  | 	Error _send_raw(const uint8_t *p_buffer, int p_size, int p_peer, bool p_reliable); | 
					
						
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							|  |  |  | 	void _visibility_changed(int p_peer, ObjectID p_oid); | 
					
						
							|  |  |  | 	Error _update_sync_visibility(int p_peer, MultiplayerSynchronizer *p_sync); | 
					
						
							|  |  |  | 	Error _update_spawn_visibility(int p_peer, const ObjectID &p_oid); | 
					
						
							|  |  |  | 	void _free_remotes(const PeerInfo &p_info); | 
					
						
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										 |  |  | 	template <typename T> | 
					
						
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										 |  |  | 	static T *get_id_as(const ObjectID &p_id) { | 
					
						
							|  |  |  | 		return p_id.is_valid() ? Object::cast_to<T>(ObjectDB::get_instance(p_id)) : nullptr; | 
					
						
							|  |  |  | 	} | 
					
						
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										 |  |  | #ifdef DEBUG_ENABLED
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							|  |  |  | 	_FORCE_INLINE_ void _profile_node_data(const String &p_what, ObjectID p_id, int p_size); | 
					
						
							|  |  |  | #endif
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										 |  |  | public: | 
					
						
							|  |  |  | 	static void make_default(); | 
					
						
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										 |  |  | 	void on_reset(); | 
					
						
							|  |  |  | 	void on_peer_change(int p_id, bool p_connected); | 
					
						
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										 |  |  | 	Error on_spawn(Object *p_obj, Variant p_config); | 
					
						
							|  |  |  | 	Error on_despawn(Object *p_obj, Variant p_config); | 
					
						
							|  |  |  | 	Error on_replication_start(Object *p_obj, Variant p_config); | 
					
						
							|  |  |  | 	Error on_replication_stop(Object *p_obj, Variant p_config); | 
					
						
							|  |  |  | 	void on_network_process(); | 
					
						
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										 |  |  | 	Error on_spawn_receive(int p_from, const uint8_t *p_buffer, int p_buffer_len); | 
					
						
							|  |  |  | 	Error on_despawn_receive(int p_from, const uint8_t *p_buffer, int p_buffer_len); | 
					
						
							|  |  |  | 	Error on_sync_receive(int p_from, const uint8_t *p_buffer, int p_buffer_len); | 
					
						
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										 |  |  | 	Error on_delta_receive(int p_from, const uint8_t *p_buffer, int p_buffer_len); | 
					
						
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										 |  |  | 	bool is_rpc_visible(const ObjectID &p_oid, int p_peer) const; | 
					
						
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										 |  |  | 	void set_max_sync_packet_size(int p_size); | 
					
						
							|  |  |  | 	int get_max_sync_packet_size() const; | 
					
						
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							|  |  |  | 	void set_max_delta_packet_size(int p_size); | 
					
						
							|  |  |  | 	int get_max_delta_packet_size() const; | 
					
						
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										 |  |  | 	SceneReplicationInterface(SceneMultiplayer *p_multiplayer, SceneCacheInterface *p_cache) { | 
					
						
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										 |  |  | 		multiplayer = p_multiplayer; | 
					
						
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										 |  |  | 		multiplayer_cache = p_cache; | 
					
						
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										 |  |  | 	} | 
					
						
							|  |  |  | }; | 
					
						
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										 |  |  | #endif // SCENE_REPLICATION_INTERFACE_H
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