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);
}
Error MultiplayerAPI::send_bytes(PoolVector<uint8_t> p_data, int p_to, NetworkedMultiplayerPeer::TransferMode p_mode) {
ERR_EXPLAIN("Trying to send an empty raw packet.");
ERR_FAIL_COND_V(p_data.size() < 1, ERR_INVALID_DATA);
ERR_EXPLAIN("Trying to send a raw packet while no network peer is active.");
ERR_FAIL_COND_V(!network_peer.is_valid(), ERR_UNCONFIGURED);
ERR_EXPLAIN("Trying to send a raw packet via a network peer which is not connected.");
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.write[0] = NETWORK_COMMAND_RAW;
memcpy(&packet_cache.write[1], &r[0], p_data.size());
network_peer->set_target_peer(p_to);
network_peer->set_transfer_mode(p_mode);
return network_peer->put_packet(packet_cache.ptr(), p_data.size() + 1);
}
void MultiplayerAPI::_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) {
if (network_peer.is_null()) {
ERR_EXPLAIN("Attempt to remote call/set when networking is not active in SceneTree.");
ERR_FAIL();
}
if (network_peer->get_connection_status() == NetworkedMultiplayerPeer::CONNECTION_CONNECTING) {
ERR_EXPLAIN("Attempt to remote call/set when networking is not connected yet in SceneTree.");
ERR_FAIL();
}
if (network_peer->get_connection_status() == NetworkedMultiplayerPeer::CONNECTION_DISCONNECTED) {
ERR_EXPLAIN("Attempt to remote call/set when networking is disconnected.");
ERR_FAIL();
}
if (p_argcount > 255) {
ERR_EXPLAIN("Too many arguments >255.");
ERR_FAIL();
}
if (p_to != 0 && !connected_peers.has(ABS(p_to))) {
if (p_to == network_peer->get_unique_id()) {
ERR_EXPLAIN("Attempt to remote call/set yourself! unique ID: " + itos(network_peer->get_unique_id()));
} else {
ERR_EXPLAIN("Attempt to remote call unexisting ID: " + itos(p_to));
}
ERR_FAIL();
}
NodePath from_path = (root_node->get_path()).rel_path_to(p_from->get_path());
ERR_EXPLAIN("Unable to send RPC. Relative path is empty. THIS IS LIKELY A BUG IN THE ENGINE!");
ERR_FAIL_COND(from_path.is_empty());
// See if the path is cached.
PathSentCache *psc = path_send_cache.getptr(from_path);
if (!psc) {
// Path is not cached, create.
path_send_cache[from_path] = PathSentCache();
psc = path_send_cache.getptr(from_path);
psc->id = last_send_cache_id++;
}
// Create base packet, lots of hardcode because it must be tight.
int ofs = 0;
#define MAKE_ROOM(m_amount) \
if (packet_cache.size() < m_amount) packet_cache.resize(m_amount);
// Encode type.
MAKE_ROOM(1);
packet_cache.write[0] = p_set ? NETWORK_COMMAND_REMOTE_SET : NETWORK_COMMAND_REMOTE_CALL;
ofs += 1;
// Encode ID.
MAKE_ROOM(ofs + 4);
encode_uint32(psc->id, &(packet_cache.write[ofs]));
ofs += 4;
// Encode function name.
CharString name = String(p_name).utf8();
int len = encode_cstring(name.get_data(), NULL);
MAKE_ROOM(ofs + len);
encode_cstring(name.get_data(), &(packet_cache.write[ofs]));
ofs += len;
if (p_set) {
// Set argument.
Error err = encode_variant(*p_arg[0], NULL, len, allow_object_decoding || network_peer->is_object_decoding_allowed());
ERR_EXPLAIN("Unable to encode RSET value. THIS IS LIKELY A BUG IN THE ENGINE!");
ERR_FAIL_COND(err != OK);
MAKE_ROOM(ofs + len);
encode_variant(*p_arg[0], &(packet_cache.write[ofs]), len, allow_object_decoding || network_peer->is_object_decoding_allowed());
ofs += len;
} else {
// Call arguments.
MAKE_ROOM(ofs + 1);
packet_cache.write[ofs] = p_argcount;
ofs += 1;
for (int i = 0; i < p_argcount; i++) {
Error err = encode_variant(*p_arg[i], NULL, len, allow_object_decoding || network_peer->is_object_decoding_allowed());
ERR_EXPLAIN("Unable to encode RPC argument. THIS IS LIKELY A BUG IN THE ENGINE!");
ERR_FAIL_COND(err != OK);
MAKE_ROOM(ofs + len);
encode_variant(*p_arg[i], &(packet_cache.write[ofs]), len, allow_object_decoding || network_peer->is_object_decoding_allowed());
ofs += len;
}
}
// See if all peers have cached path (is so, call can be fast).
bool has_all_peers = _send_confirm_path(from_path, psc, p_to);
// Take chance and set transfer mode, since all send methods will use it.
network_peer->set_transfer_mode(p_unreliable ? NetworkedMultiplayerPeer::TRANSFER_MODE_UNRELIABLE : NetworkedMultiplayerPeer::TRANSFER_MODE_RELIABLE);
if (has_all_peers) {
// They all have verified paths, so send fast.
network_peer->set_target_peer(p_to); // To all of you.
network_peer->put_packet(packet_cache.ptr(), ofs); // A message with love.
} else {
// Not all verified path, so send one by one.
// Append path at the end, since we will need it for some packets.
CharString pname = String(from_path).utf8();
int path_len = encode_cstring(pname.get_data(), NULL);
MAKE_ROOM(ofs + path_len);
encode_cstring(pname.get_data(), &(packet_cache.write[ofs]));
for (Set<int>::Element *E = connected_peers.front(); E; E = E->next()) {
if (p_to < 0 && E->get() == -p_to)
continue; // Continue, excluded.
if (p_to > 0 && E->get() != p_to)
continue; // Continue, not for this peer.
Map<int, bool>::Element *F = psc->confirmed_peers.find(E->get());
ERR_CONTINUE(!F); // Should never happen.
network_peer->set_target_peer(E->get()); // To this one specifically.
if (F->get()) {
// This one confirmed path, so use id.
encode_uint32(psc->id, &(packet_cache.write[1]));
network_peer->put_packet(packet_cache.ptr(), ofs);
} else {
// This one did not confirm path yet, so use entire path (sorry!).
encode_uint32(0x80000000 | ofs, &(packet_cache.write[1])); // Offset to path and flag.
network_peer->put_packet(packet_cache.ptr(), ofs + path_len);
}
}
}
}
