void NetworkedMultiplayerENet::close_connection() {
if (!active)
return;
_pop_current_packet();
bool peers_disconnected=false;
for (Map<int,ENetPeer*>::Element *E=peer_map.front();E;E=E->next()) {
if (E->get()) {
enet_peer_disconnect_now(E->get(),unique_id);
peers_disconnected=true;
}
}
if (peers_disconnected) {
enet_host_flush(host);
OS::get_singleton()->delay_usec(100); //wait 100ms for disconnection packets to send
}
enet_host_destroy(host);
active=false;
incoming_packets.clear();
unique_id=1; //server is 1
connection_status=CONNECTION_DISCONNECTED;
}
void NetworkedMultiplayerENet::poll(){
ERR_FAIL_COND(!active);
_pop_current_packet();
ENetEvent event;
/* Wait up to 1000 milliseconds for an event. */
while (enet_host_service (host, & event, 1000) > 0)
{
switch (event.type)
{
case ENET_EVENT_TYPE_CONNECT: {
/* Store any relevant client information here. */
IP_Address ip;
ip.host=event.peer -> address.host;
StringName *new_id = memnew( StringName );
*new_id = String(ip) +":"+ itos(event.peer -> address.port);
peer_map[*new_id]=event.peer;
connection_status=CONNECTION_CONNECTED; //if connecting, this means it connected t something!
emit_signal("peer_connected",*new_id);
} break;
case ENET_EVENT_TYPE_DISCONNECT: {
/* Reset the peer's client information. */
StringName *id = (StringName*)event.peer -> data;
emit_signal("peer_disconnected",*id);
peer_map.erase(*id);
memdelete( id );
} break;
case ENET_EVENT_TYPE_RECEIVE: {
Packet packet;
packet.packet = event.packet;
StringName *id = (StringName*)event.peer -> data;
packet.from_channel=event.channelID;
packet.from=*id;
incoming_packets.push_back(packet);
//destroy packet later..
}break;
case ENET_EVENT_TYPE_NONE: {
//do nothing
} break;
}
}
}
void NetworkedMultiplayerENet::close_connection() {
ERR_FAIL_COND(!active);
_pop_current_packet();
enet_host_destroy(host);
active=false;
incoming_packets.clear();
connection_status=CONNECTION_DISCONNECTED;
}
Error NetworkedMultiplayerENet::get_packet(const uint8_t **r_buffer,int &r_buffer_size) const{
ERR_FAIL_COND_V(incoming_packets.size()==0,ERR_UNAVAILABLE);
_pop_current_packet();
current_packet = incoming_packets.front()->get();
incoming_packets.pop_front();
r_buffer=(const uint8_t**)¤t_packet.packet->data;
r_buffer_size=current_packet.packet->dataLength;
return OK;
}
void NetworkedMultiplayerENet::poll(){
ERR_FAIL_COND(!active);
_pop_current_packet();
ENetEvent event;
/* Wait up to 1000 milliseconds for an event. */
while (true) {
if (!host || !active) //might have been disconnected while emitting a notification
return;
int ret = enet_host_service (host, & event, 1);
if (ret<0) {
//error, do something?
break;
} else if (ret==0) {
break;
}
switch (event.type)
{
case ENET_EVENT_TYPE_CONNECT: {
/* Store any relevant client information here. */
if (server && refuse_connections) {
enet_peer_reset(event.peer);
break;
}
IP_Address ip;
ip.host=event.peer -> address.host;
int *new_id = memnew( int );
*new_id = event.data;
if (*new_id==0) { //data zero is sent by server (enet won't let you configure this). Server is always 1
*new_id=1;
}
event.peer->data=new_id;
peer_map[*new_id]=event.peer;
connection_status=CONNECTION_CONNECTED; //if connecting, this means it connected t something!
emit_signal("peer_connected",*new_id);
if (server) {
//someone connected, let it know of all the peers available
for (Map<int,ENetPeer*>::Element *E=peer_map.front();E;E=E->next()) {
if (E->key()==*new_id)
continue;
//send existing peers to new peer
ENetPacket * packet = enet_packet_create (NULL,8,ENET_PACKET_FLAG_RELIABLE);
encode_uint32(SYSMSG_ADD_PEER,&packet->data[0]);
encode_uint32(E->key(),&packet->data[4]);
enet_peer_send(event.peer,1,packet);
//send the new peer to existing peers
packet = enet_packet_create (NULL,8,ENET_PACKET_FLAG_RELIABLE);
encode_uint32(SYSMSG_ADD_PEER,&packet->data[0]);
encode_uint32(*new_id,&packet->data[4]);
enet_peer_send(E->get(),1,packet);
}
} else {
emit_signal("connection_succeeded");
}
} break;
case ENET_EVENT_TYPE_DISCONNECT: {
/* Reset the peer's client information. */
int *id = (int*)event.peer -> data;
if (!id) {
if (!server) {
emit_signal("connection_failed");
}
} else {
if (server) {
//someone disconnected, let it know to everyone else
for (Map<int,ENetPeer*>::Element *E=peer_map.front();E;E=E->next()) {
if (E->key()==*id)
continue;
//send the new peer to existing peers
ENetPacket* packet = enet_packet_create (NULL,8,ENET_PACKET_FLAG_RELIABLE);
encode_uint32(SYSMSG_REMOVE_PEER,&packet->data[0]);
encode_uint32(*id,&packet->data[4]);
enet_peer_send(E->get(),1,packet);
}
} else if (!server) {
emit_signal("server_disconnected");
close_connection();
return;
}
emit_signal("peer_disconnected",*id);
peer_map.erase(*id);
memdelete( id );
}
} break;
case ENET_EVENT_TYPE_RECEIVE: {
if (event.channelID==1) {
//some config message
ERR_CONTINUE( event.packet->dataLength < 8);
int msg = decode_uint32(&event.packet->data[0]);
int id = decode_uint32(&event.packet->data[4]);
switch(msg) {
case SYSMSG_ADD_PEER: {
peer_map[id]=NULL;
emit_signal("peer_connected",id);
} break;
case SYSMSG_REMOVE_PEER: {
peer_map.erase(id);
emit_signal("peer_disconnected",id);
} break;
}
enet_packet_destroy(event.packet);
} else if (event.channelID==0){
Packet packet;
packet.packet = event.packet;
int *id = (int*)event.peer -> data;
ERR_CONTINUE(event.packet->dataLength<12)
uint32_t source = decode_uint32(&event.packet->data[0]);
int target = decode_uint32(&event.packet->data[4]);
uint32_t flags = decode_uint32(&event.packet->data[8]);
packet.from=source;
if (server) {
packet.from=*id;
if (target==0) {
//re-send the everyone but sender :|
incoming_packets.push_back(packet);
//and make copies for sending
for (Map<int,ENetPeer*>::Element *E=peer_map.front();E;E=E->next()) {
if (uint32_t(E->key())==source) //do not resend to self
continue;
ENetPacket* packet2 = enet_packet_create (packet.packet->data,packet.packet->dataLength,flags);
enet_peer_send(E->get(),0,packet2);
}
} else if (target<0) {
//to all but one
//and make copies for sending
for (Map<int,ENetPeer*>::Element *E=peer_map.front();E;E=E->next()) {
if (uint32_t(E->key())==source || E->key()==-target) //do not resend to self, also do not send to excluded
continue;
ENetPacket* packet2 = enet_packet_create (packet.packet->data,packet.packet->dataLength,flags);
enet_peer_send(E->get(),0,packet2);
}
if (-target != 1) {
//server is not excluded
incoming_packets.push_back(packet);
} else {
//server is excluded, erase packet
enet_packet_destroy(packet.packet);
}
} else if (target==1) {
//to myself and only myself
incoming_packets.push_back(packet);
} else {
//to someone else, specifically
ERR_CONTINUE(!peer_map.has(target));
enet_peer_send(peer_map[target],0,packet.packet);
}
} else {
incoming_packets.push_back(packet);
}
//destroy packet later..
} else {
ERR_CONTINUE(true);
}
}break;
case ENET_EVENT_TYPE_NONE: {
//do nothing
} break;
}
}
}
