Allow sending raw bytes through MultiplayerAPI

2 files changed, 41 insertions, 1 deletions

diff --git a/core/io/multiplayer_api.cpp b/core/io/multiplayer_api.cpp
index 0ede7e87cb..456d29520f 100644
--- a/core/io/multiplayer_api.cpp
+++ b/core/io/multiplayer_api.cpp
@@ -76,7 +76,7 @@ Ref<NetworkedMultiplayerPeer> MultiplayerAPI::get_network_peer() const {
 void MultiplayerAPI::_process_packet(int p_from, const uint8_t *p_packet, int p_packet_len) {
 
 	ERR_FAIL_COND(root_node == NULL);
-	ERR_FAIL_COND(p_packet_len < 5);
+	ERR_FAIL_COND(p_packet_len < 1);
 
 	uint8_t packet_type = p_packet[0];
 
@@ -123,6 +123,11 @@ void MultiplayerAPI::_process_packet(int p_from, const uint8_t *p_packet, int p_
 			}
 
 		} break;
+
+		case NETWORK_COMMAND_RAW: {
+
+			_process_raw(p_from, p_packet, p_packet_len);
+		} break;
 	}
 }
 
@@ -259,6 +264,8 @@ void MultiplayerAPI::_process_simplify_path(int p_from, const uint8_t *p_packet,
 
 void MultiplayerAPI::_process_confirm_path(int p_from, const uint8_t *p_packet, int p_packet_len) {
 
+	ERR_FAIL_COND(p_packet_len < 2);
+
 	String paths;
 	paths.parse_utf8((const char *)&p_packet[1], p_packet_len - 1);
 
@@ -648,6 +655,34 @@ void MultiplayerAPI::rsetp(Node *p_node, int p_peer_id, bool p_unreliable, const
 	_send_rpc(p_node, p_peer_id, p_unreliable, true, p_property, &vptr, 1);
 }
 
+Error MultiplayerAPI::send_bytes(PoolVector<uint8_t> p_data, int p_to) {
+
+	ERR_FAIL_COND_V(p_data.size() < 1, ERR_INVALID_DATA);
+	ERR_FAIL_COND_V(!network_peer.is_valid(), ERR_UNCONFIGURED);
+	ERR_FAIL_COND_V(network_peer->get_connection_status() != NetworkedMultiplayerPeer::CONNECTION_CONNECTED, ERR_UNCONFIGURED);
+
+	MAKE_ROOM(p_data.size() + 1);
+	PoolVector<uint8_t>::Read r = p_data.read();
+	packet_cache[0] = NETWORK_COMMAND_RAW;
+	memcpy(&packet_cache[1], &r[0], p_data.size());
+	network_peer->set_target_peer(p_to);
+	return network_peer->put_packet(packet_cache.ptr(), p_data.size() + 1);
+}
+
+void MultiplayerAPI::_process_raw(int p_from, const uint8_t *p_packet, int p_packet_len) {
+
+	ERR_FAIL_COND(p_packet_len < 2);
+
+	PoolVector<uint8_t> out;
+	int len = p_packet_len - 1;
+	out.resize(len);
+	{
+		PoolVector<uint8_t>::Write w = out.write();
+		memcpy(&w[0], &p_packet[1], len);
+	}
+	emit_signal("network_peer_packet", p_from, out);
+}
+
 int MultiplayerAPI::get_network_unique_id() const {
 
 	ERR_FAIL_COND_V(!network_peer.is_valid(), 0);
@@ -686,6 +721,7 @@ Vector<int> MultiplayerAPI::get_network_connected_peers() const {
 
 void MultiplayerAPI::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_root_node", "node"), &MultiplayerAPI::set_root_node);
+	ClassDB::bind_method(D_METHOD("send_bytes", "bytes", "id"), &MultiplayerAPI::send_bytes, DEFVAL(NetworkedMultiplayerPeer::TARGET_PEER_BROADCAST));
 	ClassDB::bind_method(D_METHOD("has_network_peer"), &MultiplayerAPI::has_network_peer);
 	ClassDB::bind_method(D_METHOD("get_network_peer"), &MultiplayerAPI::get_network_peer);
 	ClassDB::bind_method(D_METHOD("get_network_unique_id"), &MultiplayerAPI::get_network_unique_id);
@@ -708,6 +744,7 @@ void MultiplayerAPI::_bind_methods() {
 
 	ADD_SIGNAL(MethodInfo("network_peer_connected", PropertyInfo(Variant::INT, "id")));
 	ADD_SIGNAL(MethodInfo("network_peer_disconnected", PropertyInfo(Variant::INT, "id")));
+	ADD_SIGNAL(MethodInfo("network_peer_packet", PropertyInfo(Variant::INT, "id"), PropertyInfo(Variant::POOL_BYTE_ARRAY, "packet")));
 	ADD_SIGNAL(MethodInfo("connected_to_server"));
 	ADD_SIGNAL(MethodInfo("connection_failed"));
 	ADD_SIGNAL(MethodInfo("server_disconnected"));
diff --git a/core/io/multiplayer_api.h b/core/io/multiplayer_api.h
index cc60890ced..25f445004d 100644
--- a/core/io/multiplayer_api.h
+++ b/core/io/multiplayer_api.h
@@ -43,6 +43,7 @@ protected:
 	Node *_process_get_node(int p_from, const uint8_t *p_packet, int p_packet_len);
 	void _process_rpc(Node *p_node, const StringName &p_name, int p_from, const uint8_t *p_packet, int p_packet_len, int p_offset);
 	void _process_rset(Node *p_node, const StringName &p_name, int p_from, const uint8_t *p_packet, int p_packet_len, int p_offset);
+	void _process_raw(int p_from, const uint8_t *p_packet, int p_packet_len);
 
 	void _send_rpc(Node *p_from, int p_to, bool p_unreliable, bool p_set, const StringName &p_name, const Variant **p_arg, int p_argcount);
 	bool _send_confirm_path(NodePath p_path, PathSentCache *psc, int p_from);
@@ -53,6 +54,7 @@ public:
 		NETWORK_COMMAND_REMOTE_SET,
 		NETWORK_COMMAND_SIMPLIFY_PATH,
 		NETWORK_COMMAND_CONFIRM_PATH,
+		NETWORK_COMMAND_RAW,
 	};
 
 	void poll();
@@ -60,6 +62,7 @@ public:
 	void set_root_node(Node *p_node);
 	void set_network_peer(const Ref<NetworkedMultiplayerPeer> &p_peer);
 	Ref<NetworkedMultiplayerPeer> get_network_peer() const;
+	Error send_bytes(PoolVector<uint8_t> p_data, int p_to = NetworkedMultiplayerPeer::TARGET_PEER_BROADCAST);
 
 	// Called by Node.rpc
 	void rpcp(Node *p_node, int p_peer_id, bool p_unreliable, const StringName &p_method, const Variant **p_arg, int p_argcount);