first commit

src/sp/common/DataBuffer.cpp

@@ -0,0 +1,163 @@
+#include <sp/common/DataBuffer.h>
+
+#include <fstream>
+#include <iomanip>
+#include <sstream>
+
+#include <sp/misc/Format.h>
+#include <sp/misc/Log.h>
+
+namespace sp {
+
+DataBuffer::DataBuffer() : m_ReadOffset(0) {}
+
+DataBuffer::DataBuffer(const DataBuffer& other) : m_Buffer(other.m_Buffer), m_ReadOffset(other.m_ReadOffset) {}
+
+DataBuffer::DataBuffer(DataBuffer&& other) : m_Buffer(std::move(other.m_Buffer)), m_ReadOffset(std::move(other.m_ReadOffset)) {}
+
+DataBuffer::DataBuffer(const std::string& str) : m_Buffer(str.begin(), str.end()), m_ReadOffset(0) {}
+
+DataBuffer::DataBuffer(const DataBuffer& other, Data::difference_type offset) : m_ReadOffset(0) {
+	m_Buffer.reserve(other.GetSize() - static_cast<std::size_t>(offset));
+	std::copy(other.m_Buffer.begin() + offset, other.m_Buffer.end(), std::back_inserter(m_Buffer));
+}
+
+DataBuffer& DataBuffer::operator<<(const std::string& str) {
+	std::size_t strlen = str.length() + 1;	// including null character
+	Resize(GetSize() + strlen);
+	std::memcpy(m_Buffer.data() + GetSize() - strlen, str.data(), strlen);
+	return *this;
+}
+
+DataBuffer& DataBuffer::operator<<(const DataBuffer& data) {
+	m_Buffer.insert(m_Buffer.end(), data.begin(), data.end());
+	return *this;
+}
+
+DataBuffer& DataBuffer::operator>>(std::string& str) {
+	std::size_t stringSize = strlen(reinterpret_cast<const char*>(m_Buffer.data()) + m_ReadOffset) + 1;	 // including null character
+	str.resize(stringSize);
+	std::copy(m_Buffer.begin() + static_cast<difference_type>(m_ReadOffset),
+		m_Buffer.begin() + static_cast<difference_type>(m_ReadOffset + stringSize), str.begin());
+	m_ReadOffset += stringSize;
+	str.resize(stringSize - 1);
+	return *this;
+}
+
+DataBuffer& DataBuffer::operator>>(DataBuffer& data) {
+	data.Resize(GetSize() - m_ReadOffset);
+	std::copy(m_Buffer.begin() + static_cast<difference_type>(m_ReadOffset), m_Buffer.end(), data.begin());
+	m_ReadOffset = m_Buffer.size();
+	return *this;
+}
+
+void DataBuffer::WriteSome(const char* buffer, std::size_t amount) {
+	std::size_t end_pos = m_Buffer.size();
+	m_Buffer.resize(m_Buffer.size() + amount);
+	std::memcpy(m_Buffer.data() + end_pos, buffer, amount);
+}
+
+void DataBuffer::WriteSome(const std::uint8_t* buffer, std::size_t amount) {
+	std::size_t end_pos = m_Buffer.size();
+	m_Buffer.resize(m_Buffer.size() + amount);
+	std::memcpy(m_Buffer.data() + end_pos, buffer, amount);
+}
+
+void DataBuffer::ReadSome(char* buffer, std::size_t amount) {
+	assert(m_ReadOffset + amount <= GetSize());
+	std::copy_n(m_Buffer.begin() + static_cast<difference_type>(m_ReadOffset), amount, buffer);
+	m_ReadOffset += amount;
+}
+
+
+void DataBuffer::ReadSome(std::uint8_t* buffer, std::size_t amount) {
+	assert(m_ReadOffset + amount <= GetSize());
+	std::copy_n(m_Buffer.begin() + static_cast<difference_type>(m_ReadOffset), amount, buffer);
+	m_ReadOffset += amount;
+}
+
+
+void DataBuffer::ReadSome(DataBuffer& buffer, std::size_t amount) {
+	assert(m_ReadOffset + amount <= GetSize());
+	buffer.Resize(amount);
+	std::copy_n(m_Buffer.begin() + static_cast<difference_type>(m_ReadOffset), amount, buffer.begin());
+	m_ReadOffset += amount;
+}
+
+
+DataBuffer& DataBuffer::operator=(const DataBuffer& other) {
+	m_Buffer = other.m_Buffer;
+	m_ReadOffset = other.m_ReadOffset;
+	return *this;
+}
+
+DataBuffer& DataBuffer::operator=(DataBuffer&& other) {
+	m_Buffer = std::move(other.m_Buffer);
+	m_ReadOffset = std::move(other.m_ReadOffset);
+	return *this;
+}
+
+void DataBuffer::SetReadOffset(std::size_t pos) {
+	assert(pos <= GetSize());
+	m_ReadOffset = pos;
+}
+
+std::size_t DataBuffer::GetSize() const {
+	return m_Buffer.size();
+}
+
+std::size_t DataBuffer::GetRemaining() const {
+	return m_Buffer.size() - m_ReadOffset;
+}
+
+DataBuffer::iterator DataBuffer::begin() {
+	return m_Buffer.begin();
+}
+
+DataBuffer::iterator DataBuffer::end() {
+	return m_Buffer.end();
+}
+
+DataBuffer::const_iterator DataBuffer::begin() const {
+	return m_Buffer.begin();
+}
+
+DataBuffer::const_iterator DataBuffer::end() const {
+	return m_Buffer.end();
+}
+
+std::ostream& operator<<(std::ostream& os, const DataBuffer& buffer) {
+	for (unsigned char u : buffer)
+		os << std::hex << std::setfill('0') << std::setw(2) << static_cast<int>(u) << " ";
+	os << std::dec;
+	return os;
+}
+
+bool DataBuffer::ReadFile(const std::string& fileName) {
+	try {
+		std::ifstream file(fileName, std::istream::binary);
+		std::ostringstream ss;
+		ss << file.rdbuf();
+		const std::string& s = ss.str();
+		m_Buffer = DataBuffer::Data(s.begin(), s.end());
+		m_ReadOffset = 0;
+	} catch (std::exception& e) {
+		utils::LOGE(utils::Format("[IO] Failed to read file %s ! reason : %s", fileName.c_str(), e.what()));
+		return false;
+	}
+	return m_Buffer.size() > 0;
+}
+
+bool DataBuffer::WriteFile(const std::string& fileName) const {
+	try {
+		std::ofstream file(fileName, std::ostream::binary);
+		file.write(reinterpret_cast<const char*>(m_Buffer.data()), static_cast<std::streamsize>(m_Buffer.size()));
+		file.flush();
+	} catch (std::exception& e) {
+		utils::LOGE(utils::Format("[IO] Failed to read file %s ! reason : %s", fileName.c_str(), e.what()));
+		return false;
+	}
+	return true;
+}
+
+}  // namespace sp

src/sp/common/VarInt.cpp

@@ -0,0 +1,52 @@
+#include <sp/common/VarInt.h>
+
+#include <stdexcept>
+#include <sp/common/DataBuffer.h>
+
+namespace sp {
+
+static constexpr int SEGMENT_BITS = 0x7F;
+static constexpr int CONTINUE_BIT = 0x80;
+
+std::size_t VarInt::GetSerializedLength() const {
+	DataBuffer buffer;
+	buffer << *this;
+	return buffer.GetSize();
+}
+
+DataBuffer& operator<<(DataBuffer& out, const VarInt& var) {
+	std::uint64_t value = var.m_Value;
+	while (true) {
+		if ((value & ~static_cast<std::uint64_t>(SEGMENT_BITS)) == 0) {
+			out << static_cast<std::uint8_t>(value);
+			return out;
+		}
+
+		out << static_cast<std::uint8_t>((value & SEGMENT_BITS) | CONTINUE_BIT);
+
+		value >>= 7;
+	}
+}
+
+DataBuffer& operator>>(DataBuffer& in, VarInt& var) {
+	var.m_Value = 0;
+	unsigned int position = 0;
+	std::uint8_t currentByte;
+
+	while (true) {
+		in.ReadSome(&currentByte, 1);
+		var.m_Value |= static_cast<std::uint64_t>(currentByte & SEGMENT_BITS) << position;
+
+		if ((currentByte & CONTINUE_BIT) == 0)
+			break;
+
+		position += 7;
+
+		if (position >= 8 * sizeof(var.m_Value))
+			throw std::runtime_error("VarInt is too big");
+	}
+
+	return in;
+}
+
+}  // namespace sp

src/sp/misc/Log.cpp

@@ -0,0 +1,37 @@
+#include <sp/misc/Log.h>
+
+
+
+#ifdef SP_ANDROID_LOGGING
+#include <android/log.h>
+#else
+#include <iostream>
+#endif
+
+namespace sp {
+namespace utils {
+
+void LOG(const std::string& msg) {
+#ifdef SP_ANDROID_LOGGING
+	__android_log_print(ANDROID_LOG_INFO, "TRACKERS", "%s", msg.c_str());
+#else
+	std::cout << msg << "\n";
+#endif
+}
+
+void LOGD(const std::string& msg) {
+#if !defined(NDEBUG)
+	LOG(msg);
+#endif
+}
+
+void LOGE(const std::string& err) {
+#ifdef SP_ANDROID_LOGGING
+	__android_log_print(ANDROID_LOG_ERROR, "TRACKERS", "%s", err.c_str());
+#else
+	std::cerr << err << "\n";
+#endif
+}
+
+}  // namespace utils
+}  // namespace sp

src/sp/misc/Test.cpp

@@ -0,0 +1,14 @@
+#include <sp/misc/Format.h>
+#include <sp/misc/Log.h>
+#include <sp/misc/Test.h>
+
+namespace sp {
+namespace test {
+
+void LogAssert(const char* expression, const char* file, int line, const char* function) {
+	utils::LOGE(utils::Format("%s:%i: %s: Assertion failed !", file, line, function));
+	utils::LOGE(utils::Format("    %i  |\t%s;", line, expression));
+}
+
+}  // namespace test
+}  // namespace sp

src/sp/protocol/command/CommandFactory.cpp

@@ -0,0 +1,24 @@
+#include <sp/protocol/command/CommandFactory.h>
+
+#include <array>
+#include <cassert>
+#include <functional>
+
+namespace sp {
+namespace protocol {
+namespace CommandFactory {
+
+using CommandCreator = std::function<std::shared_ptr<Command>()>;
+
+#define DeclareCommand(CommandName, ...) std::make_shared<commands::CommandName>(),
+
+static std::array<std::shared_ptr<Command>, static_cast<std::size_t>(CommandType::COMMAND_COUNT)> Commands = {DeclareAllCommand()};
+
+const std::shared_ptr<Command>& CreateReadOnlyCommand(CommandType a_Type) {
+	assert(a_Type < CommandType::COMMAND_COUNT);
+	return Commands[static_cast<std::size_t>(a_Type)];
+}
+
+}  // namespace CommandFactory
+}  // namespace protocol
+}  // namespace sp

src/sp/protocol/command/CommandSerializer.cpp

@@ -0,0 +1,229 @@
+#include <sp/protocol/command/CommandSerializer.h>
+
+#include <sp/protocol/command/CommandFactory.h>
+#include <sp/protocol/command/CommandVisitor.h>
+
+#include <sp/misc/Format.h>
+#include <sp/misc/Log.h>
+
+namespace sp {
+namespace protocol {
+namespace CommandSerializer {
+
+#define DeclareCommand(CommandName, ...)                                                                                              \
+	void Visit(const commands::CommandName& a_Command) override {                                                                     \
+		const auto& commandData = a_Command.m_Data;                                                                                   \
+		SerializeCommandData(commandData);                                                                                            \
+	}                                                                                                                                 \
+                                                                                                                                      \
+	void SerializeCommandData(const commands::CommandName::CommandDataType& a_Command);
+
+
+
+
+class Serializer : public CommandVisitor {
+  private:
+	DataBuffer& m_Buffer;
+
+  public:
+	Serializer(DataBuffer& a_Buffer) : m_Buffer(a_Buffer) {}
+
+	void Serialize(const Command& a_Command) {
+		m_Buffer << static_cast<CommandID>(a_Command.GetType());
+		Check(a_Command);
+	}
+
+	DeclareAllCommand()
+};
+
+#undef DeclareCommand
+
+
+
+
+
+#define DeclareCommand(CommandName, ...)                                                                                              \
+	void Visit(const commands::CommandName& a_Command) override {                                                                     \
+		auto commandPtr = CommandFactory::CreateCommand<commands::CommandName>();                                                     \
+		auto& commandData = commandPtr->m_Data;                                                                                       \
+                                                                                                                                      \
+		DeserializeCommandData(commandData);                                                                                          \
+                                                                                                                                      \
+		m_Command = std::move(commandPtr);                                                                                            \
+	}                                                                                                                                 \
+                                                                                                                                      \
+	void DeserializeCommandData(commands::CommandName::CommandDataType& a_Command);
+
+
+
+class Deserializer : public CommandVisitor {
+  private:
+	DataBuffer& m_Buffer;
+	CommandPtr m_Command;
+
+  public:
+	Deserializer(DataBuffer& a_Buffer) : m_Buffer(a_Buffer) {}
+
+	bool Deserialize(const CommandPtr& a_Command) {
+		try {
+			Check(*a_Command.get());
+		} catch (std::exception& e) {
+			utils::LOGE(utils::Format("[CommandSerializer::Deserializer] %s", e.what()));
+			return false;
+		}
+		return true;
+	}
+
+	CommandPtr& GetCommand() {
+		return m_Command;
+	}
+
+	DeclareAllCommand()
+};
+
+
+
+
+
+DataBuffer Serialize(const Command& a_Command) {
+	DataBuffer buffer;
+
+	Serializer serializer(buffer);
+	serializer.Serialize(a_Command);
+
+	return buffer;
+}
+
+std::shared_ptr<Command> Deserialize(DataBuffer& a_Data) {
+	CommandID commandId;
+	a_Data >> commandId;
+
+	if (commandId >= static_cast<CommandID>(CommandType::COMMAND_COUNT))
+		return nullptr;
+
+	CommandType commandType = CommandType(commandId);
+
+	// for double-dispatch
+	const CommandPtr& emptyCommand = CommandFactory::CreateReadOnlyCommand(commandType);
+
+	Deserializer deserializer(a_Data);
+
+	if (deserializer.Deserialize(emptyCommand)) {
+		CommandPtr command = std::move(deserializer.GetCommand());
+		return command;
+	}
+
+	return nullptr;
+}
+
+
+
+
+
+//---------------------------------------------
+// Command serializer implementation
+//----------------------------------------------
+
+
+
+
+
+void Serializer::SerializeCommandData(const cdata::End& a_Command) {}
+
+void Deserializer::DeserializeCommandData(cdata::End& a_Command) {}
+
+
+
+
+
+void Serializer::SerializeCommandData(const cdata::PlaceTower& a_Command) {
+	m_Buffer << static_cast<std::uint8_t>((static_cast<std::uint8_t>(a_Command.m_Type) << 4 | a_Command.m_Placer & 0xF))
+			 << a_Command.m_Position;
+}
+
+void Deserializer::DeserializeCommandData(cdata::PlaceTower& a_Command) {
+	std::uint8_t union1;
+	m_Buffer >> union1 >> a_Command.m_Position;
+	a_Command.m_Type = sp::TowerType(union1 >> 4);
+	a_Command.m_Placer = union1 & 0xF;
+}
+
+
+
+
+
+void Serializer::SerializeCommandData(const cdata::PlayerJoin& a_Command) {
+	m_Buffer << a_Command.m_ID << a_Command.m_Name;
+}
+
+void Deserializer::DeserializeCommandData(cdata::PlayerJoin& a_Command) {
+	m_Buffer >> a_Command.m_ID >> a_Command.m_Name;
+}
+
+
+
+
+void Serializer::SerializeCommandData(const cdata::SpawnTroop& a_Command) {
+	m_Buffer << static_cast<std::uint8_t>(static_cast<std::uint8_t>(a_Command.m_Type) << 3 | a_Command.m_Level & 0x7)
+			 << a_Command.m_Position << a_Command.m_Sender;
+}
+
+void Deserializer::DeserializeCommandData(cdata::SpawnTroop& a_Command) {
+	std::uint8_t union1;
+	m_Buffer >> union1 >> a_Command.m_Position >> a_Command.m_Sender;
+	a_Command.m_Type = sp::EntityType(union1 >> 3);
+	a_Command.m_Level = union1 & 0x7;
+}
+
+
+
+
+
+void Serializer::SerializeCommandData(const cdata::TeamChange& a_Command) {
+	m_Buffer << static_cast<std::uint8_t>(a_Command.m_Player << 1 | static_cast<std::uint8_t>(a_Command.m_NewTeam));
+}
+
+void Deserializer::DeserializeCommandData(cdata::TeamChange& a_Command) {
+	std::uint8_t union1;
+	m_Buffer >> union1;
+	a_Command.m_Player = union1 >> 1;
+	a_Command.m_NewTeam = sp::Team(union1 & 1);
+}
+
+
+
+
+
+void Serializer::SerializeCommandData(const cdata::UpgradeTower& a_Command) {
+	m_Buffer << static_cast<std::uint16_t>(a_Command.m_Tower << 4 | a_Command.m_Upgrade & 0xF);
+}
+
+void Deserializer::DeserializeCommandData(cdata::UpgradeTower& a_Command) {
+	std::uint16_t union1;
+	m_Buffer >> union1;
+	a_Command.m_Tower = union1 >> 4;
+	a_Command.m_Upgrade = union1 & 0xF;
+}
+
+
+
+
+
+void Serializer::SerializeCommandData(const cdata::UseItem& a_Command) {
+	m_Buffer << static_cast<std::uint8_t>(static_cast<std::uint8_t>(a_Command.m_Item) << 4 | a_Command.m_User & 0xF)
+			 << a_Command.m_Position;
+}
+
+void Deserializer::DeserializeCommandData(cdata::UseItem& a_Command) {
+	std::uint8_t union1;
+	m_Buffer >> union1 >> a_Command.m_Position;
+	a_Command.m_Item = sp::ShopItem(union1 >> 4);
+	a_Command.m_User = union1 & 0xF;
+}
+
+
+
+
+}  // namespace CommandSerializer
+}  // namespace protocol
+}  // namespace sp

src/sp/protocol/command/CommandVisitor.cpp

@@ -0,0 +1,11 @@
+#include <sp/protocol/command/CommandVisitor.h>
+
+namespace sp {
+namespace protocol {
+
+void CommandVisitor::Check(const Command& a_Command) {
+	a_Command.Accept(*this);
+}
+
+}  // namespace protocol
+}  // namespace sp

src/sp/protocol/command/Commands.cpp

@@ -0,0 +1,18 @@
+#define SP_INSTANCIATE_COMMANDS
+#include <sp/protocol/command/Commands.h>
+
+#include <sp/protocol/command/CommandVisitor.h>
+
+namespace sp {
+namespace protocol {
+
+template <CommandType CT, typename Data>
+commands::ConcreteCommand<CT, Data>::ConcreteCommand(const CommandDataType& a_Data) : m_Data(a_Data) {}
+
+template <CommandType CT, typename Data>
+void commands::ConcreteCommand<CT, Data>::Accept(CommandVisitor& a_Visitor) const {
+	a_Visitor.Visit(*this);
+}
+
+}  // namespace protocol
+}  // namespace sp

src/sp/protocol/packet/PacketFactory.cpp

@@ -0,0 +1,26 @@
+#include <sp/protocol/packet/PacketFactory.h>
+
+#include <array>
+#include <cassert>
+#include <functional>
+
+namespace sp {
+namespace protocol {
+namespace PacketFactory {
+
+using PacketCreator = std::function<std::unique_ptr<Packet>()>;
+
+#define DeclarePacket(PacketName, ...) std::make_unique<packets::PacketName>(),
+
+static std::array<std::unique_ptr<Packet>, static_cast<std::size_t>(PacketType::PACKET_COUNT)> Packets = {
+	DeclareAllPacket()
+};
+
+const std::unique_ptr<Packet>& CreateReadOnlyPacket(PacketType a_Type) {
+	assert(a_Type < PacketType::PACKET_COUNT);
+	return Packets[static_cast<std::size_t>(a_Type)];
+}
+
+}  // namespace PacketFactory
+}  // namespace protocol
+}  // namespace sp

src/sp/protocol/packet/PacketSerializer.cpp

@@ -0,0 +1,262 @@
+#include <sp/protocol/packet/PacketSerializer.h>
+
+#include <sp/protocol/command/CommandSerializer.h>
+#include <sp/protocol/packet/PacketFactory.h>
+#include <sp/protocol/packet/PacketVisitor.h>
+
+#include <sp/misc/Format.h>
+#include <sp/misc/Log.h>
+
+namespace sp {
+namespace protocol {
+namespace PacketSerializer {
+
+#define DeclarePacket(PacketName, ...)                                                                                                \
+	void Visit(const packets::PacketName& a_Packet) override {                                                                        \
+		const auto& packetData = a_Packet.m_Data;                                                                                     \
+		SerializePacketData(packetData);                                                                                              \
+	}                                                                                                                                 \
+                                                                                                                                      \
+	void SerializePacketData(const packets::PacketName::PacketDataType& a_Packet);
+
+
+
+
+class Serializer : public PacketVisitor {
+  private:
+	DataBuffer& m_Buffer;
+
+  public:
+	Serializer(DataBuffer& a_Buffer) : m_Buffer(a_Buffer) {}
+
+	void Serialize(const Packet& a_Packet) {
+		m_Buffer << static_cast<PacketID>(a_Packet.GetType());
+		Check(a_Packet);
+	}
+
+	DeclareAllPacket()
+};
+
+#undef DeclarePacket
+
+
+
+
+
+#define DeclarePacket(PacketName, ...)                                                                                                \
+	void Visit(const packets::PacketName& a_Packet) override {                                                                        \
+		auto packetPtr = PacketFactory::CreatePacket<packets::PacketName>();                                                          \
+		auto& packetData = packetPtr->m_Data;                                                                                         \
+                                                                                                                                      \
+		DeserializePacketData(packetData);                                                                                            \
+                                                                                                                                      \
+		m_Packet = std::move(packetPtr);                                                                                              \
+	}                                                                                                                                 \
+                                                                                                                                      \
+	void DeserializePacketData(packets::PacketName::PacketDataType& a_Packet);
+
+
+
+class Deserializer : public PacketVisitor {
+  private:
+	DataBuffer& m_Buffer;
+	PacketPtr m_Packet;
+
+  public:
+	Deserializer(DataBuffer& a_Buffer) : m_Buffer(a_Buffer) {}
+
+	bool Deserialize(const PacketPtr& a_Packet) {
+		try {
+			Check(*a_Packet.get());
+		} catch (std::exception& e) {
+			utils::LOGE(utils::Format("[PacketSerializer::Deserializer] %s", e.what()));
+			return false;
+		}
+		return true;
+	}
+
+	PacketPtr& GetPacket() {
+		return m_Packet;
+	}
+
+	DeclareAllPacket()
+};
+
+
+
+
+
+DataBuffer Serialize(const Packet& a_Packet) {
+	DataBuffer buffer;
+
+	Serializer serializer(buffer);
+	serializer.Serialize(a_Packet);
+
+	return buffer;
+}
+
+std::unique_ptr<Packet> Deserialize(DataBuffer& a_Data) {
+	PacketID packetId;
+	a_Data >> packetId;
+
+	if (packetId >= static_cast<PacketID>(PacketType::PACKET_COUNT))
+		return nullptr;
+
+	PacketType packetType = PacketType(packetId);
+
+	// for double-dispatch
+	const PacketPtr& emptyPacket = PacketFactory::CreateReadOnlyPacket(packetType);
+
+	Deserializer deserializer(a_Data);
+
+	if (deserializer.Deserialize(emptyPacket)) {
+		PacketPtr packet = std::move(deserializer.GetPacket());
+		return packet;
+	}
+
+	return nullptr;
+}
+
+
+
+
+
+//---------------------------------------------
+// Packet serializer implementation
+//----------------------------------------------
+
+
+
+
+
+void Serializer::SerializePacketData(const pdata::PlayerLogin& a_Packet) {
+	m_Buffer << a_Packet.m_PlayerName;
+}
+
+void Deserializer::DeserializePacketData(pdata::PlayerLogin& a_Packet) {
+	m_Buffer >> a_Packet.m_PlayerName;
+}
+
+
+
+
+
+void Serializer::SerializePacketData(const pdata::LoggingSuccess& a_Packet) {
+	m_Buffer << a_Packet.m_PlayerId;
+}
+
+void Deserializer::DeserializePacketData(pdata::LoggingSuccess& a_Packet) {
+	m_Buffer >> a_Packet.m_PlayerId;
+}
+
+
+
+
+
+void Serializer::SerializePacketData(const pdata::PlayerJoin& a_Packet) {
+	m_Buffer << a_Packet.m_Player;
+}
+
+void Deserializer::DeserializePacketData(pdata::PlayerJoin& a_Packet) {
+	m_Buffer >> a_Packet.m_Player;
+}
+
+
+
+
+void Serializer::SerializePacketData(const pdata::PlayerLeave& a_Packet) {
+	m_Buffer << a_Packet.m_PlayerId;
+}
+
+void Deserializer::DeserializePacketData(pdata::PlayerLeave& a_Packet) {
+	m_Buffer >> a_Packet.m_PlayerId;
+}
+
+
+
+
+
+void Serializer::SerializePacketData(const pdata::KeepAlive& a_Packet) {
+	m_Buffer << a_Packet.m_KeepAliveId;
+}
+
+void Deserializer::DeserializePacketData(pdata::KeepAlive& a_Packet) {
+	m_Buffer >> a_Packet.m_KeepAliveId;
+}
+
+
+
+
+
+void Serializer::SerializePacketData(const pdata::Disconnect& a_Packet) {
+	m_Buffer << a_Packet.m_Reason;
+}
+
+void Deserializer::DeserializePacketData(pdata::Disconnect& a_Packet) {
+	m_Buffer >> a_Packet.m_Reason;
+}
+
+
+
+
+
+void Serializer::SerializePacketData(const pdata::ChatMessage& a_Packet) {
+	m_Buffer << a_Packet.m_Text;
+}
+
+void Deserializer::DeserializePacketData(pdata::ChatMessage& a_Packet) {
+	m_Buffer >> a_Packet.m_Text;
+}
+
+
+
+
+
+void Serializer::SerializePacketData(const pdata::LockSteps& a_Packet) {
+	m_Buffer << a_Packet.m_FirstFrameNumber;
+	for (int i = 0; i < LOCKSTEP_BUFFER_SIZE; i++) {
+		auto& lockStep = a_Packet.m_LockSteps[i];
+		m_Buffer << VarInt{lockStep.size()};
+
+		for (int j = 0; j < lockStep.size(); i++) {
+			auto command = lockStep[j];
+			m_Buffer << CommandSerializer::Serialize(*command);
+		}
+	}
+}
+
+void Deserializer::DeserializePacketData(pdata::LockSteps& a_Packet) {
+	m_Buffer >> a_Packet.m_FirstFrameNumber;
+	for (int i = 0; i < LOCKSTEP_BUFFER_SIZE; i++) {
+		VarInt lockStepSize;
+		m_Buffer >> lockStepSize;
+
+		for (std::size_t j = 0; j < lockStepSize.GetValue(); i++) {
+			auto command = CommandSerializer::Deserialize(m_Buffer);
+			if (command) {
+				a_Packet.m_LockSteps[i].push_back(command);
+			} else {
+				throw std::runtime_error("Failed to deserialise command");
+			}
+		}
+	}
+}
+
+
+
+
+
+void Serializer::SerializePacketData(const pdata::BeginGame& a_Packet) {
+	m_Buffer << a_Packet.m_Map << a_Packet.m_BlueTeam << a_Packet.m_RedTeam << a_Packet.m_Map;
+}
+
+void Deserializer::DeserializePacketData(pdata::BeginGame& a_Packet) {
+	m_Buffer >> a_Packet.m_Map >> a_Packet.m_BlueTeam >> a_Packet.m_RedTeam >> a_Packet.m_Map;
+}
+
+
+
+
+}  // namespace PacketSerializer
+}  // namespace protocol
+}  // namespace sp

src/sp/protocol/packet/PacketVisitor.cpp

@@ -0,0 +1,11 @@
+#include <sp/protocol/packet/PacketVisitor.h>
+
+namespace sp {
+namespace protocol {
+
+void PacketVisitor::Check(const Packet& a_Packet) {
+	a_Packet.Accept(*this);
+}
+
+}  // namespace protocol
+}  // namespace sp

src/sp/protocol/packet/Packets.cpp

@@ -0,0 +1,23 @@
+#define SP_INSTANCIATE_PACKETS
+#include <sp/protocol/packet/Packets.h>
+
+#include <sp/protocol/packet/PacketVisitor.h>
+
+namespace sp {
+namespace protocol {
+
+template <PacketType PT, typename Data>
+packets::ConcretePacket<PT, Data>::ConcretePacket(const PacketDataType& a_Data) : m_Data(a_Data) {}
+
+template <PacketType PT, typename Data>
+void packets::ConcretePacket<PT, Data>::Accept(PacketVisitor& a_Visitor) const {
+	a_Visitor.Visit(*this);
+}
+
+#define DeclarePacket(PacketName, packetSendType, packetSenderType)                                                                   \
+	static_assert(static_cast<unsigned>(PacketSendType::packetSendType) && static_cast<unsigned>(PacketSenderType::packetSenderType));
+
+DeclareAllPacket()
+
+}  // namespace protocol
+}  // namespace sp