unreliable packets

include/blitz/godot/NetworkInterface.h

@@ -27,6 +27,8 @@ class NetworkInterface : public godot::Node, public protocol::PacketDispatcher {
 
   private:
 	void RecievePacketDataReliable(godot::PackedByteArray a_PacketData);
+	void RecievePacketDataUnreliable(godot::PackedByteArray a_PacketData);
+	void RecievePacketDataUnreliableOrdered(godot::PackedByteArray a_PacketData);
 
 	void OnPlayerConnected(PeerID a_PeerId);
 	void OnPlayerDisconnected(PeerID a_PeerId);

include/blitz/protocol/PacketDeclare.h

@@ -12,7 +12,7 @@ namespace protocol {
  * \enum PacketSender
  * \brief Indicate who should send a packet
  */
-enum class PacketSender {
+enum class PacketSenderType {
 	/** Sent by clients and server */
 	Both,
 	/** Sent by clients to the server */
@@ -36,7 +36,7 @@ enum class PacketSender {
 	DeclarePacket(PlayerLeave, Reliable, Server) \
 	DeclarePacket(PlayerList, Reliable, Server) \
 	DeclarePacket(PlayerLogin, Reliable, Client) \
-	DeclarePacket(PlayerPositionAndRotation, Reliable, Both) \
+	DeclarePacket(PlayerPositionAndRotation, Unreliable, Both) \
 	DeclarePacket(PlayerShoot, Reliable, Both) \
 	DeclarePacket(PlayerStats, Reliable, Server) \
 	DeclarePacket(ServerConfig, Reliable, Server) \

include/blitz/protocol/PacketSender.h

@@ -0,0 +1,57 @@
+#pragma once
+
+#include <blitz/protocol/PacketVisitor.h>
+
+namespace blitz {
+
+class NetworkInterface;
+
+namespace protocol {
+
+///////////////////////
+/* PacketBroadcaster */
+///////////////////////
+
+#define DeclarePacket(PacketName, Reliability, ...) void Visit(const protocol::packets::PacketName& a_Packet) override;
+
+class PacketBroadcaster : public protocol::PacketVisitor {
+  private:
+	NetworkInterface& m_NetworkInterface;
+
+  public:
+	PacketBroadcaster(NetworkInterface& a_NetworkInterface) : m_NetworkInterface(a_NetworkInterface) {}
+
+	void BroadcastPacket(const protocol::Packet& a_Packet) {
+		Check(a_Packet);
+	}
+
+	DeclareAllPacket()
+};
+
+
+
+
+
+
+//////////////////
+/* PacketSender */
+//////////////////
+class PacketSender : public protocol::PacketVisitor {
+  private:
+	NetworkInterface& m_NetworkInterface;
+	PeerID m_PeerId;
+
+  public:
+	PacketSender(PeerID a_PeerId, NetworkInterface& a_NetworkInterface) : m_PeerId(a_PeerId), m_NetworkInterface(a_NetworkInterface) {}
+
+	void SendPacket(const protocol::Packet& a_Packet) {
+		Check(a_Packet);
+	}
+
+	DeclareAllPacket()
+};
+
+#undef DeclarePacket
+
+}  // namespace protocol
+}  // namespace blitz

src/blitz/godot/NetworkInterface.cpp

@@ -1,21 +1,37 @@
 #include <blitz/godot/NetworkInterface.h>
 
 #include <blitz/protocol/PacketFactory.h>
+#include <blitz/protocol/PacketSender.h>
 #include <blitz/protocol/PacketSerializer.h>
+#include <blitz/protocol/PacketVisitor.h>
 #include <godot_cpp/classes/e_net_multiplayer_peer.hpp>
 #include <godot_cpp/classes/multiplayer_api.hpp>
 #include <godot_cpp/classes/packed_scene.hpp>
 #include <godot_cpp/classes/resource_loader.hpp>
 #include <godot_cpp/variant/utility_functions.hpp>
 
+
 namespace blitz {
 
+#define RPC_CONFIG(functionName, rpc_mode, transfer_mode, call_local, channel)                                                        \
+	{                                                                                                                                 \
+		Dictionary config;                                                                                                            \
+		config["rpc_mode"] = rpc_mode;                                                                                                \
+		config["transfer_mode"] = transfer_mode;                                                                                      \
+		config["call_local"] = call_local;                                                                                            \
+		config["channel"] = channel;                                                                                                  \
+		rpc_config(functionName, config);                                                                                             \
+	}
+
 static const char ServerScenePath[] = "res://Scenes/Network/server.tscn";
 
 using namespace godot;
 
 void NetworkInterface::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("RecievePacketDataReliable", "a_PacketData"), &NetworkInterface::RecievePacketDataReliable);
+	ClassDB::bind_method(D_METHOD("RecievePacketDataUnreliable", "a_PacketData"), &NetworkInterface::RecievePacketDataUnreliable);
+	ClassDB::bind_method(
+		D_METHOD("RecievePacketDataUnreliableOrdered", "a_PacketData"), &NetworkInterface::RecievePacketDataUnreliableOrdered);
 
 	// server
 	ADD_SIGNAL(MethodInfo("player_connected", PropertyInfo(Variant::INT, "peer_id")));
@@ -33,13 +49,10 @@ NetworkInterface::NetworkInterface() {}
 NetworkInterface::~NetworkInterface() {}
 
 void NetworkInterface::_ready() {
-	// TODO: unreliable
-	Dictionary config;
-	config["rpc_mode"] = MultiplayerAPI::RPC_MODE_ANY_PEER;
-	config["transfer_mode"] = MultiplayerPeer::TRANSFER_MODE_RELIABLE;
-	config["call_local"] = true;
-	config["channel"] = 0;
-	rpc_config("RecievePacketDataReliable", config);
+	RPC_CONFIG("RecievePacketDataReliable", MultiplayerAPI::RPC_MODE_ANY_PEER, MultiplayerPeer::TRANSFER_MODE_RELIABLE, true, 0);
+	RPC_CONFIG("RecievePacketDataUnreliable", MultiplayerAPI::RPC_MODE_ANY_PEER, MultiplayerPeer::TRANSFER_MODE_UNRELIABLE, true, 1);
+	RPC_CONFIG("RecievePacketDataUnreliableOrdered", MultiplayerAPI::RPC_MODE_ANY_PEER,
+		MultiplayerPeer::TRANSFER_MODE_UNRELIABLE_ORDERED, true, 2);
 
 	get_multiplayer()->connect("peer_connected", callable_mp(this, &NetworkInterface::OnPlayerConnected));
 	get_multiplayer()->connect("peer_disconnected", callable_mp(this, &NetworkInterface::OnPlayerDisconnected));
@@ -49,13 +62,13 @@ void NetworkInterface::_ready() {
 }
 
 void NetworkInterface::BroadcastPacket(const protocol::Packet& a_Packet) {
-	PackedByteArray byteArray = protocol::PacketSerializer::Serialize(a_Packet);
-	rpc("RecievePacketDataReliable", byteArray);
+	protocol::PacketBroadcaster packetBroadcaster(*this);
+	packetBroadcaster.BroadcastPacket(a_Packet);
 }
 
 void NetworkInterface::SendPacket(PeerID a_Peer, const protocol::Packet& a_Packet) {
-	PackedByteArray byteArray = protocol::PacketSerializer::Serialize(a_Packet);
-	rpc_id(a_Peer, "RecievePacketDataReliable", byteArray);
+	protocol::PacketSender packetSender(a_Peer, *this);
+	packetSender.SendPacket(a_Packet);
 }
 
 void NetworkInterface::RecievePacketDataReliable(godot::PackedByteArray a_PacketData) {
@@ -66,9 +79,27 @@ void NetworkInterface::RecievePacketDataReliable(godot::PackedByteArray a_Packet
 	}
 }
 
+void NetworkInterface::RecievePacketDataUnreliable(godot::PackedByteArray a_PacketData) {
+	// we have to copy the function body in order to preserve the remote sender id
+	auto packet = protocol::PacketSerializer::Deserialize(a_PacketData);
+	if (packet) {
+		packet->m_Sender = get_multiplayer()->get_remote_sender_id();
+		Dispatch(*packet);
+	}
+}
+
+void NetworkInterface::RecievePacketDataUnreliableOrdered(godot::PackedByteArray a_PacketData) {
+	// we have to copy the function body in order to preserve the remote sender id
+	auto packet = protocol::PacketSerializer::Deserialize(a_PacketData);
+	if (packet) {
+		packet->m_Sender = get_multiplayer()->get_remote_sender_id();
+		Dispatch(*packet);
+	}
+}
+
 Error NetworkInterface::JoinGame(const String& a_Address, uint16_t a_Port) {
 	auto* peer = memnew(ENetMultiplayerPeer);
-	Error error = peer->create_client(a_Address, a_Port);
+	Error error = peer->create_client(a_Address, a_Port, 3);
 	if (error) {
 		OnConnectFail();
 		return error;
@@ -80,7 +111,7 @@ Error NetworkInterface::JoinGame(const String& a_Address, uint16_t a_Port) {
 
 Error NetworkInterface::CreateGame(uint16_t a_Port, bool a_Dedicated) {
 	auto* peer = memnew(ENetMultiplayerPeer);
-	Error error = peer->create_server(a_Port);
+	Error error = peer->create_server(a_Port, 50, 3);
 	if (error)
 		return error;
 

src/blitz/protocol/PacketSender.cpp

@@ -0,0 +1,39 @@
+#include <blitz/protocol/PacketSender.h>
+
+#include <blitz/godot/NetworkInterface.h>
+#include <blitz/protocol/PacketSerializer.h>
+
+namespace blitz {
+namespace protocol {
+
+///////////////////////
+/* PacketBroadcaster */
+///////////////////////
+
+#define DeclarePacket(PacketName, Reliability, ...)                                                                                   \
+	void PacketBroadcaster::Visit(const protocol::packets::PacketName& a_Packet) {                                                    \
+		m_NetworkInterface.rpc("RecievePacketData" #Reliability, protocol::PacketSerializer::Serialize(a_Packet));                    \
+	}
+
+DeclareAllPacket()
+
+#undef DeclarePacket
+
+
+
+
+
+//////////////////
+/* PacketSender */
+//////////////////
+#define DeclarePacket(PacketName, Reliability, ...)                                                                                   \
+	void PacketSender::Visit(const protocol::packets::PacketName& a_Packet) {                                                         \
+		m_NetworkInterface.rpc_id(m_PeerId, "RecievePacketData" #Reliability, protocol::PacketSerializer::Serialize(a_Packet));       \
+	}
+
+	DeclareAllPacket()
+
+#undef DeclarePacket
+
+}  // namespace protocol
+}  // namespace blitz