wrong directory name

.clang-format

@@ -0,0 +1,37 @@
+Language: Cpp
+BasedOnStyle: LLVM
+
+AlignAfterOpenBracket: DontAlign
+BreakConstructorInitializers: AfterColon
+ConstructorInitializerAllOnOneLineOrOnePerLine: true
+PointerAlignment: Left
+SortIncludes: true
+SpacesBeforeTrailingComments: 2
+UseTab: Always
+MaxEmptyLinesToKeep: 5
+
+TabWidth: 4
+ConstructorInitializerIndentWidth: 4
+ContinuationIndentWidth: 4
+IndentWidth: 4
+IndentCaseLabels: true
+
+ColumnLimit: 135
+AlwaysBreakTemplateDeclarations: Yes
+
+AllowShortFunctionsOnASingleLine: Empty
+BreakBeforeBraces: Custom
+BraceWrapping:
+  AfterClass: false
+  AfterControlStatement: false
+  AfterEnum: false
+  AfterExternBlock: false
+  AfterFunction: false
+  AfterNamespace: false
+  AfterStruct: false
+  AfterUnion: false
+  BeforeCatch: false
+  BeforeElse: false
+  IndentBraces: false
+  SplitEmptyFunction: true
+  SplitEmptyRecord: true

.gitea/workflows/linux.yaml

@@ -0,0 +1,52 @@
+name: Linux arm64
+run-name: Build And Test
+
+on: 
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  Build:
+    runs-on: ubuntu-latest
+    env:
+      XMAKE_ROOT: y
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v3
+
+      - name: Prepare Xmake
+        uses: xmake-io/github-action-setup-xmake@v1
+        with:
+          xmake-version: latest
+          actions-cache-folder: '.xmake-cache'
+          actions-cache-key: 'ubuntu-xmake'
+
+      - name: Packages List
+        run : |
+          xmake show -l packages | grep -E 'require|project' > ${{ github.workspace }}/packages.txt
+          cat ${{ github.workspace }}/packages.txt
+
+      - name: Calc deps hash
+        uses: seepine/hash-files@v1
+        id: get-hash
+        with:
+          patterns: 'packages.txt'
+
+      - name: Packages cache
+        uses: actions/cache@v4
+        with:
+          path: ~/.xmake/packages
+          key: ${{ runner.os }}-${{ steps.get-hash.outputs.hash }}
+
+      - name: XMake config
+        run: xmake f --policies=package.install_only -p linux -y
+
+      - name: Build
+        run: xmake
+
+      - name: Test
+        run: xmake test

.gitignore

@@ -9,3 +9,4 @@ NazaraLog.log
 
 .vscode/settings.json
 .vscode/compile_commands.json
+.cache

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "doxygen/doxygen-awesome-css"]
+	path = doxygen/doxygen-awesome-css
+	url = https://github.com/jothepro/doxygen-awesome-css.git

.vscode/launch.json

@@ -8,7 +8,7 @@
             "type": "xmake",
             "request": "launch",
             "name": "Debug",
-            "target": "Blitz2",
+            "target": "Blitz2Client",
             "cwd": "${workspaceFolder}",
         }
     ]

assets/example.passlist

@@ -0,0 +1,58 @@
+passlist "Forward Passlist"
+{
+    attachment "DepthBuffer"
+    {
+        format "PreferredDepthStencil"
+    }
+
+    pass "DepthPrepass"
+    {
+        impl "Depth"
+        {
+            MatPass "DepthPass"
+        }
+
+        depthstenciloutput "DepthBuffer"
+    }
+
+    attachment "ForwardOutput"
+    {
+        format "RGBA16F"
+    }
+
+    pass "ForwardPass"
+    {
+        impl "Forward"
+        output "Output" "ForwardOutput"
+        depthstencilinput "DepthBuffer"
+        depthstenciloutput "DepthBuffer"
+        flag "LightShadowing"
+    }
+
+    attachment "Gamma"
+    {
+        format "RGBA8"
+    }
+
+    pass "Gamma correction"
+    {
+        impl "PostProcess"
+        {
+            Shader "PostProcess.GammaCorrection"
+        }
+
+        input "Input" "ForwardOutput"
+        output "Output" "Gamma"
+    }
+
+    attachmentproxy "ImguiOutput" "Gamma"
+
+    pass "Imgui"
+    {
+        impl "Imgui"
+        input "Input" "Gamma"
+        output "Output" "ImguiOutput"
+    }
+
+    output "ImguiOutput"
+}

doxygen/footer.html

@@ -0,0 +1,21 @@
+<!-- HTML footer for doxygen 1.9.1-->
+<!-- start footer part -->
+<!--BEGIN GENERATE_TREEVIEW-->
+<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
+  <ul>
+    $navpath
+    <li class="footer">$generatedby <a href="https://www.doxygen.org/index.html"><img class="footer"
+          src="$relpath^doxygen.svg" width="104" height="31" alt="doxygen" /></a> $doxygenversion </li>
+  </ul>
+</div>
+<!--END GENERATE_TREEVIEW-->
+<!--BEGIN !GENERATE_TREEVIEW-->
+<hr class="footer" />
+<address class="footer"><small>
+    $generatedby&#160;<a href="https://www.doxygen.org/index.html"><img class="footer" src="$relpath^doxygen.svg"
+        width="104" height="31" alt="doxygen" /></a> $doxygenversion
+  </small></address>
+<!--END !GENERATE_TREEVIEW-->
+</body>
+
+</html>

doxygen/header.html

@@ -0,0 +1,66 @@
+<!-- HTML header for doxygen 1.9.1-->
+<!DOCTYPE html
+  PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+
+<head>
+  <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8" />
+  <meta http-equiv="X-UA-Compatible" content="IE=9" />
+  <meta name="generator" content="Doxygen $doxygenversion" />
+  <meta name="viewport" content="width=device-width, initial-scale=1" />
+  <!--BEGIN PROJECT_NAME-->
+  <title>$projectname: $title</title><!--END PROJECT_NAME-->
+  <!--BEGIN !PROJECT_NAME-->
+  <title>$title</title><!--END !PROJECT_NAME-->
+  <link href="$relpath^tabs.css" rel="stylesheet" type="text/css" />
+  <script type="text/javascript" src="$relpath^jquery.js"></script>
+  <script type="text/javascript" src="$relpath^dynsections.js"></script>
+  $treeview
+  $search
+  $mathjax
+  <link href="$relpath^$stylesheet" rel="stylesheet" type="text/css" />
+  $extrastylesheet
+  <script type="text/javascript" src="$relpath^doxygen-awesome-darkmode-toggle.js"></script>
+  <script type="text/javascript">
+    DoxygenAwesomeDarkModeToggle.init()
+  </script>
+</head>
+
+<body>
+  <div id="top"><!-- do not remove this div, it is closed by doxygen! -->
+
+    <!--BEGIN TITLEAREA-->
+    <div id="titlearea">
+      <table cellspacing="0" cellpadding="0">
+        <tbody>
+          <tr style="height: 56px;">
+            <!--BEGIN PROJECT_LOGO-->
+            <td id="projectlogo"><img alt="Logo" src="$relpath^$projectlogo" /></td>
+            <!--END PROJECT_LOGO-->
+            <!--BEGIN PROJECT_NAME-->
+            <td id="projectalign" style="padding-left: 0.5em;">
+              <div id="projectname">$projectname
+                <!--BEGIN PROJECT_NUMBER-->&#160;<span id="projectnumber">$projectnumber</span><!--END PROJECT_NUMBER-->
+              </div>
+              <!--BEGIN PROJECT_BRIEF-->
+              <div id="projectbrief">$projectbrief</div><!--END PROJECT_BRIEF-->
+            </td>
+            <!--END PROJECT_NAME-->
+            <!--BEGIN !PROJECT_NAME-->
+            <!--BEGIN PROJECT_BRIEF-->
+            <td style="padding-left: 0.5em;">
+              <div id="projectbrief">$projectbrief</div>
+            </td>
+            <!--END PROJECT_BRIEF-->
+            <!--END !PROJECT_NAME-->
+            <!--BEGIN DISABLE_INDEX-->
+            <!--BEGIN SEARCHENGINE-->
+            <td>$searchbox</td>
+            <!--END SEARCHENGINE-->
+            <!--END DISABLE_INDEX-->
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <!--END TITLEAREA-->
+    <!-- end header part -->

doxygen/stylesheet.css

@@ -0,0 +1,5 @@
+/* The standard CSS for doxygen 1.9.1 */
+
+body, table, div, p, dl {
+	font: 400 14px/22px Roboto,sans-serif;
+}

include/blitz/common/Format.h

@@ -0,0 +1,36 @@
+#pragma once
+
+/**
+ * \file Format.h
+ * \brief This file contains the definition of the `Format` function.
+ */
+
+#include <memory>
+#include <stdexcept>
+#include <string>
+
+namespace blitz {
+
+/**
+ * \brief Formats a string using a format string and variadic arguments.
+ *
+ * This function takes a format string and a variable number of arguments and returns a formatted string.
+ * The format string can contain placeholders that will be replaced by the corresponding arguments.
+ *
+ * \param format The format string.
+ * \param args The variadic arguments to be formatted.
+ * \return The formatted string.
+ * \throws std::runtime_error if an error occurs during formatting.
+ */
+template <typename... Args>
+std::string Format(const std::string& format, Args... args) {
+	int size = snprintf(nullptr, 0, format.c_str(), args...) + 1;  // Extra space for '\0'
+	if (size <= 0) {
+		throw std::runtime_error("Error during formatting.");
+	}
+	std::unique_ptr<char[]> buf(new char[size]);
+	snprintf(buf.get(), static_cast<std::size_t>(size), format.c_str(), args...);
+	return std::string(buf.get(), buf.get() + size - 1);  // We don't want the '\0' inside
+}
+
+}  // namespace blitz

include/blitz/common/Log.h

@@ -0,0 +1,30 @@
+#pragma once
+
+/**
+ * \file Log.h
+ * \brief File defining log functions
+ */
+
+#include <string>
+
+namespace blitz {
+
+/**
+ * \brief Logs a normal message.
+ * \param msg The message to be logged.
+ */
+void Log(const std::string& msg);
+
+/**
+ * \brief Logs a normal message in debug mode.
+ * \param msg The message to be logged.
+ */
+void LogD(const std::string& msg);
+
+/**
+ * \brief Logs an error message.
+ * \param err The error message to be logged.
+ */
+void LogE(const std::string& err);
+
+}  // namespace blitz

include/blitz/common/NonCopyable.h

@@ -0,0 +1,25 @@
+#pragma once
+
+/**
+ * \file NonCopyable.h
+ * \brief File containing the blitz::NonCopyable class
+ */
+
+namespace blitz {
+
+/**
+ * \class NonCopyable
+ * \brief Class used to make a class non copyable
+ * \note Inherit from this class privately to make a class non copyable
+ */
+class NonCopyable {
+  public:
+	NonCopyable(const NonCopyable&) = delete;
+	NonCopyable& operator=(const NonCopyable&) = delete;
+
+  protected:
+	NonCopyable() {}
+	~NonCopyable() {}
+};
+
+}  // namespace blitz

include/blitz/common/Types.h

@@ -0,0 +1,31 @@
+#pragma once
+
+#include <Nazara/Core/EnttWorld.hpp>
+
+namespace blitz {
+
+struct AtomicEnttWorld {
+	Nz::EnttWorld& m_World;
+	std::lock_guard<std::mutex> m_LockGuard;
+
+	Nz::EnttWorld* operator->() {
+		return &m_World;
+	}
+};
+
+struct EnttWorld {
+	Nz::EnttWorld& m_World;
+	std::mutex m_Mutex;
+
+	/**
+	 * \return an AtomicEnttWorld structure which will lock the associated mutex until destruction
+	 * \warning Do not hold more than one instance or the current thread will self lock
+	 */
+	operator AtomicEnttWorld() {
+		return {m_World, std::lock_guard<std::mutex>(m_Mutex)};
+	}
+};
+
+using EntityID = std::uint32_t;
+
+}  // namespace blitz

include/blitz/components/PlayerInfo.h

@@ -0,0 +1,13 @@
+#pragma once
+
+#include <blitz/common/Types.h>
+#include <string>
+
+namespace blitz {
+
+struct PlayerInfoComponent {
+	EntityID m_PlayerId;
+	std::string m_Pseudo;
+};
+
+}  // namespace blitz

include/blitz/components/PlayerRemove.h

@@ -0,0 +1,9 @@
+#pragma once
+
+#include <blitz/common/Types.h>
+
+namespace blitz {
+
+struct PlayerRemoveComponent {};
+
+}  // namespace blitz

include/blitz/network/EnetClient.h

@@ -0,0 +1,37 @@
+#pragma once
+
+#include <Nazara/Network/ENetHost.hpp>
+#include <blitz/network/EnetConnection.h>
+#include <thread>
+
+namespace blitz {
+namespace network {
+
+class EnetClient : private NonCopyable {
+  public:
+	EnetClient(const Nz::IpAddress& address);
+	~EnetClient();
+
+	void Disconnect();
+
+	NazaraSignal(OnConnect);
+	NazaraSignal(OnDisconnect);
+	NazaraSignal(OnDisconnectTimeout);
+
+	EnetConnection& GetConnection() {
+		return m_Connection;
+	}
+
+  private:
+	EnetConnection m_Connection;
+	Nz::ENetHost m_Host;
+	Nz::ENetPeer* m_Peer;
+	std::jthread m_Thread;
+	bool m_Running;
+
+	void Update();
+	void WorkerThread();
+};
+
+}  // namespace network
+}  // namespace blitz

include/blitz/network/EnetConnection.h

@@ -0,0 +1,61 @@
+#pragma once
+
+/**
+ * \file EnetConnection.h
+ * \brief File containing the blitz::network::EnetConnection class
+ */
+
+#include <Nazara/Core/ByteArray.hpp>
+#include <NazaraUtils/Signal.hpp>
+#include <blitz/common/NonCopyable.h>
+#include <blitz/protocol/PacketData.h>
+#include <blitz/protocol/PacketDeclare.h>
+
+namespace Nz {
+
+class ENetPeer;
+
+}  // namespace Nz
+
+namespace blitz {
+namespace network {
+
+class EnetClient;
+class EnetServer;
+
+
+
+#define DeclarePacket(PacketName, ...)                                                                                                \
+	/** Sends a PacketName over the network */                                                                                        \
+	void Send##PacketName(const blitz::protocol::data::PacketName& a_##PacketName) const;                                             \
+	/** Use On##PacketName.Connect() to process a PacketName incoming from network */                                                 \
+	NazaraSignal(On##PacketName, const blitz::protocol::data::PacketName&);
+
+
+
+
+
+class EnetConnection : private NonCopyable {
+  public:
+	EnetConnection(Nz::ENetPeer* a_Peer = nullptr);
+
+	bool IsConnected() const;
+
+	std::uint16_t GetPeerId() const;
+
+	DeclareAllPacket();
+
+  private:
+	Nz::ENetPeer* m_Peer;
+
+	void Recieve(Nz::ByteArray&);
+	void SetPeer(Nz::ENetPeer* a_Peer);
+
+	friend class EnetClient;
+	friend class EnetServer;
+};
+
+#undef DeclarePacket
+
+}  // namespace network
+}  // namespace blitz

include/blitz/network/EnetServer.h

@@ -0,0 +1,43 @@
+#pragma once
+
+#include <Nazara/Core/ThreadExt.hpp>
+#include <Nazara/Network/ENetHost.hpp>
+#include <blitz/network/EnetConnection.h>
+#include <cstdint>
+#include <map>
+#include <thread>
+
+namespace blitz {
+namespace network {
+
+class EnetServer : private NonCopyable {
+  public:
+	EnetServer(std::uint16_t port);
+	~EnetServer();
+
+	void Destroy();
+
+	bool IsClosed() const;
+
+	void CloseConnection(std::uint16_t a_PeerId);
+
+	EnetConnection* GetConnection(std::uint16_t a_PeerId);
+
+	NazaraSignal(OnClientConnect, EnetConnection& /*a_Peer*/);
+	NazaraSignal(OnClientDisconnect, EnetConnection& /*a_Peer*/);
+	NazaraSignal(OnClientDisconnectTimeout, EnetConnection& /*a_Peer*/);
+
+  private:
+	void Update();
+	void WorkerThread();
+
+	void RemoveConnection(std::uint16_t a_PeerId);
+
+	Nz::ENetHost m_Host;
+	bool m_Running;
+	std::jthread m_Thread;
+	std::map<std::uint16_t, std::unique_ptr<EnetConnection>> m_Connections;
+};
+
+}  // namespace network
+}  // namespace blitz

include/blitz/protocol/PacketData.h

@@ -0,0 +1,60 @@
+#pragma once
+
+#include <blitz/components/PlayerInfo.h>
+#include <vector>
+
+namespace blitz {
+namespace protocol {
+namespace data {
+
+struct PlayerLogin {
+	std::string m_PlayerName;
+};
+
+struct UpdateHealth {
+	float m_NewHealth;
+};
+
+struct LoggingSuccess {
+	EntityID m_PlayerId;
+};
+
+struct PlayerDeath {};
+
+struct PlayerJoin {
+	PlayerInfoComponent m_Player;
+};
+
+struct PlayerLeave {
+	EntityID m_PlayerId;
+};
+
+struct PlayerStats {};
+
+struct PlayerList {
+	std::vector<PlayerInfoComponent> m_Players;
+};
+
+struct ServerConfig {};
+
+struct ServerTps {};
+
+struct UpdateGameState {};
+
+struct KeepAlive {
+	std::uint64_t m_KeepAliveId;
+};
+
+struct Disconnect {};
+
+struct ChatMessage {
+    std::string m_Text;
+};
+
+struct PlayerPositionAndRotation {};
+
+struct PlayerShoot {};
+
+}  // namespace data
+}  // namespace protocol
+}  // namespace blitz

include/blitz/protocol/PacketDeclare.h

@@ -0,0 +1,49 @@
+#pragma once
+
+/**
+ * \file PacketDeclare.h
+ * \brief Holds the definitions of the packets (but not their content)
+ */
+
+namespace blitz {
+namespace protocol {
+
+/**
+ * \enum PacketSender
+ * \brief Indicate who should send a packet
+ */
+enum class PacketSender {
+	/** Sent by clients and server */
+	Both,
+	/** Sent by clients to the server */
+	Client,
+	/** Sent by server to the clients */
+	Server,
+};
+
+
+/**
+ * \def DeclareAllPacket
+ * \brief Avoids repetitive operations on packets
+ */
+#define DeclareAllPacket() \
+	DeclarePacket(ChatMessage, Reliable, Both) \
+	DeclarePacket(Disconnect, Reliable, Both) \
+	DeclarePacket(KeepAlive, Reliable, Both)  \
+	DeclarePacket(LoggingSuccess, Reliable, Server) \
+	DeclarePacket(PlayerDeath, Reliable, Server) \
+	DeclarePacket(PlayerJoin, Reliable, Server) \
+	DeclarePacket(PlayerLeave, Reliable, Server) \
+	DeclarePacket(PlayerList, Reliable, Server) \
+	DeclarePacket(PlayerLogin, Reliable, Client) \
+	DeclarePacket(PlayerPositionAndRotation, Reliable, Both) \
+	DeclarePacket(PlayerShoot, Reliable, Both) \
+	DeclarePacket(PlayerStats, Reliable, Server) \
+	DeclarePacket(ServerConfig, Reliable, Server) \
+	DeclarePacket(ServerTps, Reliable, Server) \
+	DeclarePacket(UpdateGameState, Reliable, Server) \
+	DeclarePacket(UpdateHealth, Reliable, Client)
+
+
+}  // namespace protocol
+}  // namespace blitz

include/blitz/protocol/PacketFactory.h

@@ -0,0 +1,19 @@
+#pragma once
+
+#include <blitz/protocol/Packets.h>
+#include <memory>
+
+namespace blitz {
+namespace protocol {
+namespace PacketFactory {
+
+template<typename PacketDerived, typename = typename std::enable_if<std::is_base_of<Packet, PacketDerived>::value>::type>
+std::unique_ptr<PacketDerived> CreatePacket() {
+    return std::make_unique<PacketDerived>();
+}
+
+const std::unique_ptr<Packet>& CreateReadOnlyPacket(PacketType a_Type);
+
+}  // namespace PacketFactory
+}  // namespace protocol
+}  // namespace blitz

include/blitz/protocol/PacketHandler.h

@@ -0,0 +1,20 @@
+#pragma once
+
+#include <Nazara/Core/EnttWorld.hpp>
+#include <blitz/network/EnetConnection.h>
+
+namespace blitz {
+namespace protocol {
+
+class PacketHandler : private NonCopyable {
+  public:
+	PacketHandler(network::EnetConnection& a_Connection, EnttWorld& a_World);
+	virtual ~PacketHandler();
+
+  protected:
+	network::EnetConnection& m_Connection;
+	EnttWorld& m_World;
+};
+
+}  // namespace protocol
+}  // namespace blitz

include/blitz/protocol/PacketSerializer.h

@@ -0,0 +1,19 @@
+#pragma once
+
+#include <blitz/protocol/Packets.h>
+#include <Nazara/Core/ByteArray.hpp>
+
+namespace blitz {
+namespace protocol {
+
+using PacketPtr = std::unique_ptr<Packet>;
+
+namespace PacketSerializer {
+
+Nz::ByteArray Serialize(const Packet& a_Packet);
+
+std::unique_ptr<Packet> Deserialize(Nz::ByteArray& a_Data);
+
+}
+}  // namespace protocol
+}  // namespace blitz

include/blitz/protocol/PacketVisitor.h

@@ -0,0 +1,39 @@
+#pragma once
+
+/**
+ * \file PacketVisitor.h
+ * \brief File containing the blitz::protocol::PacketVisitor class
+ */
+
+#include <blitz/protocol/Packets.h>
+
+namespace blitz {
+namespace protocol {
+
+#define DeclarePacket(PacketName, ...)                                                                                                \
+	/** This function is called when the packet processed by PacketVisitor::Check is a PacketName */                                                                                                                            \
+	virtual void Visit(const packets::PacketName&) {}
+
+/**
+ * \class PacketVisitor
+ * \brief This class uses double-dispatch in order to find the real type of a packet
+ */
+class PacketVisitor : private NonCopyable {
+  protected:
+	PacketVisitor() {}
+	virtual ~PacketVisitor() {}
+
+  public:
+	/**
+	 * \brief Calls the right PacketVisitor::Visit method corresponding to the real type of the packet
+	 * \param packet the Packet to visit
+	 */
+	void Check(const Packet& packet);
+
+	DeclareAllPacket()
+};
+
+#undef DeclarePacket
+
+}  // namespace protocol
+}  // namespace blitz

include/blitz/protocol/Packets.h

@@ -0,0 +1,107 @@
+#pragma once
+
+/**
+ * \file Packets.h
+ * \brief File containing the definitions of the packets
+ */
+
+#include <blitz/common/NonCopyable.h>
+#include <blitz/protocol/PacketData.h>
+#include <blitz/protocol/PacketDeclare.h>
+
+namespace blitz {
+namespace protocol {
+
+class PacketVisitor;
+
+/** A Packet id is 8 bits wide */
+using PacketID = std::uint8_t;
+
+#define DeclarePacket(PacketName, ...) /** PacketName */ PacketName,
+
+/**
+ * \enum PacketType
+ * \brief Map a Packet to an id
+ */
+enum class PacketType : PacketID {
+
+	DeclareAllPacket()
+
+	/** The number of packets */
+	PACKET_COUNT
+};
+
+
+#undef DeclarePacket
+
+
+class Packet : private NonCopyable {
+  public:
+	/**
+	 * \return The real type of the packet
+	 */
+	virtual PacketType GetType() const = 0;
+
+  private:
+	/** Use a PacketVisitor to make double-dispatch possible */
+	virtual void Accept(PacketVisitor& a_Visitor) const = 0;
+
+	friend class PacketVisitor;
+};
+
+
+
+
+
+namespace packets {
+
+/**
+ * \class ConcretePacket
+ * \brief A Packet associated with an id and holding data
+ * \tparam PT The packet type
+ * \tparam Data The structure holding the data of the packet (in blitz::protocol::data namespace)
+ */
+template <PacketType PT, typename Data>
+class ConcretePacket : public Packet {
+  public:
+	/** The type of the struct holding the data */
+	using PacketDataType = Data;
+
+	/** The structure holding the actual data */
+	PacketDataType m_Data;
+
+	/** Construct the packet with data of type PacketDataType */
+	ConcretePacket(const PacketDataType& a_Data = {});
+
+	constexpr PacketType GetType() const override {
+		return PT;
+	};
+
+  private:
+	void Accept(PacketVisitor& a_Visitor) const override;
+};
+
+
+
+
+
+// define BLITZ_INSTANCIATE_PACKETS
+// before including this file
+// if you want to instantiate templates
+#ifdef BLITZ_INSTANCIATE_PACKETS
+#define DeclarePacket(PacketName, ...)                                                                                                \
+	using PacketName = ConcretePacket<PacketType::PacketName, data::PacketName>;                                                      \
+	template class ConcretePacket<PacketType::PacketName, data::PacketName>;
+#else
+#define DeclarePacket(PacketName, ...) /** Defines the PacketName packet */                                                           \
+	using PacketName = ConcretePacket<PacketType::PacketName, data::PacketName>;
+#endif
+
+DeclareAllPacket()
+
+#undef DeclarePacket
+
+}  // namespace packets
+
+}  // namespace protocol
+}  // namespace blitz

include/blitz/systems/RemovePlayersSystem.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include <Nazara/Core/Time.hpp>
+#include <blitz/common/Types.h>
+
+namespace blitz {
+
+class RemovePlayersSystem {
+  public:
+	RemovePlayersSystem(entt::registry&, EnttWorld& a_World);
+
+	void Update(Nz::Time elapsedTime);
+
+  private:
+	EnttWorld& m_World;
+};
+
+}  // namespace blitz

include/blitz/utils/Test.h

@@ -0,0 +1,70 @@
+#pragma once
+
+/**
+ * \file Test.h
+ * \brief File containing unit testing utilities
+ */
+
+#include <cstdlib>
+#include <blitz/common/Log.h>
+
+namespace blitz {
+namespace test {
+
+/**
+ * \def BLITZ_TEST_SUCCESSFUL
+ * \brief Used in tests to indicate that a test was successful
+ */
+#define BLITZ_TEST_SUCCESSFUL 0
+
+/**
+ * \def BLITZ_TEST_FAILED
+ * \brief Used in tests to indicate that a test failed
+ */
+#define BLITZ_TEST_FAILED 1
+
+#ifndef __FUNCTION_NAME__
+#ifdef _WIN32
+#define __FUNCTION_NAME__ __FUNCTION__
+#else
+#define __FUNCTION_NAME__ __PRETTY_FUNCTION__
+#endif
+#endif
+
+/**
+ * \def blitz_test_assert
+ * \param ... The expression to evaluate
+ * \brief Evaluates the expression and exits the program if not valid.
+ * \note It works like a basic assert() but also in release mode
+ */
+#define blitz_test_assert(...)                                                                                                        \
+	if (!static_cast<bool>(__VA_ARGS__)) {                                                                                            \
+		blitz::test::LogAssert(#__VA_ARGS__, __FILE__, __LINE__, __FUNCTION_NAME__);                                                 \
+		std::exit(BLITZ_TEST_FAILED);                                                                                                 \
+	}
+
+
+/**
+ * \def blitz_debug_assert
+ * \param ... The expression to execute
+ * \brief Assertion without checks in release mode
+ * \note The expression is always executed. However, in release, no checks are made !
+ */
+#ifdef NDEBUG
+#define blitz_debug_assert(...) __VA_ARGS__
+#else
+#define blitz_debug_assert blitz_test_assert
+#endif
+
+
+/**
+ * \brief Prints an error message associated with a failed assertion
+ * \param expression The expression that was tested
+ * \param file The file in which the assertion failed
+ * \param line The line in the file in which the assertion failed
+ * \param function The function in which the assertion failed
+ */
+void LogAssert(const char* expression, const char* file, int line, const char* function);
+
+}  // namespace test
+}  // namespace blitz

include/client/Client.h

@@ -0,0 +1,34 @@
+#pragma once
+
+#include <Nazara/Core/EnttWorld.hpp>
+#include <blitz/network/EnetClient.h>
+#include <blitz/protocol/PacketHandler.h>
+
+namespace blitz {
+namespace client {
+
+class Client : private NonCopyable {
+  public:
+	Client(Nz::EnttWorld& a_World);
+	~Client();
+
+	void Connect(const Nz::IpAddress& a_Ip);
+	void Disconnect();
+
+	bool IsConnected();
+
+	NazaraSignal(OnClientReady);
+	NazaraSignal(OnClientDisconnect);
+
+  private:
+	EnttWorld m_World;
+	std::unique_ptr<network::EnetClient> m_NetworkClient;
+	std::vector<std::unique_ptr<protocol::PacketHandler>> m_Handlers;
+
+	void BindHandlers();
+	void UnbindHandlers();
+	void Login();
+};
+
+}  // namespace client
+}  // namespace blitz

include/client/ClientApp.h

@@ -0,0 +1,36 @@
+#pragma once
+
+#include <Nazara/Core/ApplicationComponent.hpp>
+
+namespace Nz {
+
+class Window;
+class Canvas;
+class StateMachine;
+
+}  // namespace Nz
+
+namespace blitz {
+namespace client {
+
+class StateData;
+
+class ClientApp : public Nz::ApplicationComponent {
+  public:
+	ClientApp(Nz::ApplicationBase& app);
+	~ClientApp();
+
+	void Update(Nz::Time elapsedTime) override;
+
+	Nz::Window* GetWindow() {
+		return m_Window;
+	}
+
+  private:
+	Nz::Window* m_Window;
+	std::unique_ptr<Nz::StateMachine> m_StateMachine;
+	std::shared_ptr<StateData> m_StateData;
+};
+
+}  // namespace client
+}  // namespace blitz

include/client/ImGuiAppComponent.h

@@ -0,0 +1,33 @@
+#pragma once
+
+#include <Nazara/Core/ApplicationComponent.hpp>
+
+namespace Nz {
+
+class Window;
+class Texture;
+
+}  // namespace Nz
+
+namespace blitz {
+namespace client {
+
+class StateData;
+
+class ImGuiAppComponent : public Nz::ApplicationComponent {
+  public:
+	ImGuiAppComponent(Nz::ApplicationBase& app, Nz::Window& a_Window);
+	~ImGuiAppComponent();
+
+	void Update(Nz::Time elapsedTime) override;
+
+  private:
+	Nz::Window& m_Window;
+	std::shared_ptr<Nz::Texture> m_FontTexture;
+
+	void SetStyle();
+	void UpdateFontTexture();
+};
+
+}  // namespace client
+}  // namespace blitz

include/client/components/LocalPlayer.h

@@ -0,0 +1,13 @@
+#pragma once
+
+#include <blitz/common/Types.h>
+
+namespace blitz {
+namespace client {
+
+struct LocalPlayerComponent {
+	EntityID m_LocalPlayerId;
+};
+
+}  // namespace client
+}  // namespace blitz

include/client/handlers/KeepAliveHandler.h

@@ -0,0 +1,18 @@
+#include <blitz/protocol/PacketHandler.h>
+
+namespace blitz {
+namespace client {
+
+class KeepAliveHandler : public protocol::PacketHandler {
+  public:
+	KeepAliveHandler(network::EnetConnection& a_Connection, EnttWorld& a_World);
+	~KeepAliveHandler();
+
+	NazaraSlot(network::EnetConnection, OnKeepAlive, m_Slot);
+
+  private:
+	void Handle(const protocol::data::KeepAlive&);
+};
+
+}  // namespace client
+}  // namespace blitz

include/client/handlers/LoggingSuccessHandler.h

@@ -0,0 +1,18 @@
+#include <blitz/protocol/PacketHandler.h>
+
+namespace blitz {
+namespace client {
+
+class LoggingSuccessHandler : public protocol::PacketHandler {
+  public:
+	LoggingSuccessHandler(network::EnetConnection& a_Connection, EnttWorld& a_World);
+	~LoggingSuccessHandler();
+
+	NazaraSlot(network::EnetConnection, OnLoggingSuccess, m_Slot);
+
+  private:
+	void Handle(const protocol::data::LoggingSuccess&);
+};
+
+}  // namespace client
+}  // namespace blitz

include/client/handlers/PlayerJoinHandler.h

@@ -0,0 +1,20 @@
+#include <blitz/protocol/PacketHandler.h>
+
+namespace blitz {
+namespace client {
+
+class PlayerJoinHandler : public protocol::PacketHandler {
+  public:
+	PlayerJoinHandler(network::EnetConnection& a_Connection, EnttWorld& a_World);
+	~PlayerJoinHandler();
+
+	NazaraSlot(network::EnetConnection, OnPlayerJoin, m_Slot);
+
+	NazaraSignal(OnLocalPlayerReady);
+
+  private:
+	void Handle(const protocol::data::PlayerJoin&);
+};
+
+}  // namespace client
+}  // namespace blitz

include/client/handlers/PlayerLeaveHandler.h

@@ -0,0 +1,18 @@
+#include <blitz/protocol/PacketHandler.h>
+
+namespace blitz {
+namespace client {
+
+class PlayerLeaveHandler : public protocol::PacketHandler {
+  public:
+	PlayerLeaveHandler(network::EnetConnection& a_Connection, EnttWorld& a_World);
+	~PlayerLeaveHandler();
+
+	NazaraSlot(network::EnetConnection, OnPlayerLeave, m_Slot);
+
+  private:
+	void Handle(const protocol::data::PlayerLeave&);
+};
+
+}  // namespace client
+}  // namespace blitz

include/client/handlers/PlayerListHandler.h

@@ -0,0 +1,18 @@
+#include <blitz/protocol/PacketHandler.h>
+
+namespace blitz {
+namespace client {
+
+class PlayerListHandler : public protocol::PacketHandler {
+  public:
+	PlayerListHandler(network::EnetConnection& a_Connection, EnttWorld& a_World);
+	~PlayerListHandler();
+
+	NazaraSlot(network::EnetConnection, OnPlayerList, m_Slot);
+
+  private:
+	void Handle(const protocol::data::PlayerList&);
+};
+
+}  // namespace client
+}  // namespace blitz

include/client/states/AbstractState.h

@@ -0,0 +1,75 @@
+#pragma once
+
+#include <Nazara/Core/Components/DisabledComponent.hpp>
+#include <Nazara/Core/State.hpp>
+#include <Nazara/Graphics/RenderTarget.hpp>
+#include <Nazara/Widgets/BaseWidget.hpp>
+#include <client/states/StateData.h>
+#include <functional>
+#include <memory>
+#include <vector>
+
+namespace blitz {
+namespace client {
+
+class AbstractState : public Nz::State, public std::enable_shared_from_this<AbstractState> {
+  public:
+	AbstractState(std::shared_ptr<StateData> stateData);
+	~AbstractState();
+
+  protected:
+	template <typename T, typename... Args>
+	void ConnectSignal(T& signal, Args&&... args) {
+		m_CleanupFunctions.emplace_back(
+			[connection = signal.Connect(std::forward<Args>(args)...)]() mutable { connection.Disconnect(); });
+	}
+
+	template <typename T, typename... Args>
+	T* CreateWidget(Args&&... args) {
+		T* widget = m_StateData->m_Canvas->Add<T>(std::forward<Args>(args)...);
+
+		auto& entry = m_Widgets.emplace_back();
+		entry.m_Widget = widget;
+
+		if (!m_IsVisible)
+			entry.m_Widget->Hide();
+
+		return widget;
+	}
+
+	void DestroyWidget(Nz::BaseWidget* widget);
+
+	StateData& GetStateData() {
+		return *m_StateData;
+	}
+
+	const StateData& GetStateData() const {
+		return *m_StateData;
+	}
+
+	const std::shared_ptr<StateData>& GetStateDataPtr() {
+		return m_StateData;
+	}
+
+	void Enter(Nz::StateMachine& fsm) override;
+	void Leave(Nz::StateMachine& fsm) override;
+	bool Update(Nz::StateMachine& fsm, Nz::Time elapsedTime) override;
+
+	virtual void LayoutWidgets() {}
+
+  private:
+	NazaraSlot(Nz::RenderTarget, OnRenderTargetSizeChange, m_OnTargetChangeSizeSlot);
+
+	struct WidgetEntry {
+		Nz::BaseWidget* m_Widget;
+		bool m_WasVisible = true;
+	};
+
+	std::shared_ptr<StateData> m_StateData;
+	std::vector<std::function<void()>> m_CleanupFunctions;
+	std::vector<WidgetEntry> m_Widgets;
+	bool m_IsVisible;
+};
+
+}  // namespace client
+}  // namespace blitz

include/client/states/ConnectingState.h

@@ -0,0 +1,62 @@
+#pragma once
+
+#include <Nazara/Network/IpAddress.hpp>
+#include <Nazara/Widgets/ButtonWidget.hpp>
+#include <Nazara/Widgets/LabelWidget.hpp>
+#include <client/Client.h>
+#include <client/states/AbstractState.h>
+#include <queue>
+
+namespace blitz {
+
+namespace server {
+class Server;
+}  // namespace server
+
+namespace client {
+
+class ConnectingState : public AbstractState {
+  public:
+	ConnectingState(std::shared_ptr<StateData> a_StateData, std::shared_ptr<AbstractState> a_PreviousState,
+		const std::string& a_Address, std::uint16_t a_Port, bool a_IntegratedServer = false);
+	~ConnectingState();
+
+  private:
+	struct ResolvingData {
+		bool m_HasResult = false;
+		Nz::Result<std::vector<Nz::IpAddress>, std::string /*error*/> m_Result = Nz::Err("");
+		std::string m_ServerName;
+		std::uint16_t m_Port;
+	};
+
+	ResolvingData m_ResolvingData;
+	bool m_IsConnected = false;
+	std::queue<Nz::IpAddress> m_Addresses;
+	Nz::MillisecondClock m_TimeoutClock;
+
+	Nz::ButtonWidget* m_BackButton;
+	Nz::LabelWidget* m_StatusText;
+	std::shared_ptr<AbstractState> m_NextState;
+	std::shared_ptr<AbstractState> m_PreviousState;
+
+	std::unique_ptr<Client> m_Client;
+	std::unique_ptr<server::Server> m_Server;
+
+	void LayoutWidgets() override;
+	bool Update(Nz::StateMachine& fsm, Nz::Time elapsedTime) override;
+
+	void TryResolve();
+	void TryConnect(const Nz::IpAddress& a_ServerAddress);
+	void TryNextAddress();
+
+	void OnBackPressed();
+
+	void OnConnect();
+	void OnConnectFailed();
+
+	NazaraSlot(Client, OnClientReady, m_ClientReady);
+	NazaraSlot(Client, OnClientDisconnect, m_ClientDisconnect);
+};
+
+}  // namespace client
+}  // namespace blitz

include/client/states/CreateServerState.h

@@ -0,0 +1,30 @@
+#pragma once
+
+#include <Nazara/Widgets/TextAreaWidget.hpp>
+#include <Nazara/Widgets/ButtonWidget.hpp>
+#include <client/states/AbstractState.h>
+
+namespace blitz {
+namespace client {
+
+class CreateServerState : public AbstractState {
+  public:
+	CreateServerState(std::shared_ptr<StateData> a_StateData, std::shared_ptr<AbstractState> a_PreviousState);
+	~CreateServerState();
+
+  private:
+	Nz::ButtonWidget* m_CreateServerButton;
+	Nz::TextAreaWidget* m_InputPort;
+	Nz::ButtonWidget* m_BackButton;
+	std::shared_ptr<AbstractState> m_NextState;
+	std::shared_ptr<AbstractState> m_PreviousState;
+
+	void LayoutWidgets() override;
+	bool Update(Nz::StateMachine& fsm, Nz::Time elapsedTime) override;
+
+	void OnCreateServerPressed();
+	void OnBackPressed();
+};
+
+}  // namespace client
+}  // namespace blitz

include/client/states/GameState.h

@@ -0,0 +1,27 @@
+#pragma once
+
+#include <client/states/AbstractState.h>
+#include <memory>
+
+namespace blitz {
+
+namespace server {
+class Server;
+}
+
+namespace client {
+
+class Client;
+
+class GameState : public AbstractState {
+  public:
+	GameState(std::shared_ptr<StateData> a_StateData, std::unique_ptr<Client>&& a_Client, std::unique_ptr<server::Server>&& a_Server);
+	~GameState();
+
+  private:
+	std::unique_ptr<Client> m_Client;
+	std::unique_ptr<server::Server> m_Server;
+};
+
+}  // namespace client
+}  // namespace blitz

include/client/states/ImGuiDrawer.h

@@ -0,0 +1,17 @@
+#pragma once
+
+#include <NazaraImgui/ImguiHandler.hpp>
+
+namespace blitz {
+namespace client {
+
+class ImGuiDrawer : private Nz::ImguiHandler {
+  protected:
+	ImGuiDrawer();
+	~ImGuiDrawer();
+
+	virtual void OnRenderImgui() = 0;
+};
+
+}  // namespace client
+}  // namespace blitz

include/client/states/JoinServerState.h

@@ -0,0 +1,30 @@
+#pragma once
+
+#include <Nazara/Widgets/ButtonWidget.hpp>
+#include <Nazara/Widgets/TextAreaWidget.hpp>
+#include <client/states/AbstractState.h>
+
+namespace blitz {
+namespace client {
+
+class JoinServerState : public AbstractState {
+  public:
+	JoinServerState(std::shared_ptr<StateData> a_StateData, std::shared_ptr<AbstractState> a_PreviousState);
+	~JoinServerState();
+
+  private:
+	Nz::TextAreaWidget* m_InputAddress;
+	Nz::ButtonWidget* m_JoinServerButton;
+	Nz::ButtonWidget* m_BackButton;
+	std::shared_ptr<AbstractState> m_NextState;
+	std::shared_ptr<AbstractState> m_PreviousState;
+
+	void LayoutWidgets() override;
+	bool Update(Nz::StateMachine& fsm, Nz::Time elapsedTime) override;
+
+	void OnJoinServerPressed();
+	void OnBackPressed();
+};
+
+}  // namespace client
+}  // namespace blitz

include/client/states/MainMenuState.h

@@ -0,0 +1,34 @@
+#pragma once
+
+#include <Nazara/Widgets/ButtonWidget.hpp>
+#include <client/states/AbstractState.h>
+#include <client/states/ImGuiDrawer.h>
+
+namespace blitz {
+namespace client {
+
+class MainMenuState : public AbstractState, private ImGuiDrawer {
+  public:
+	MainMenuState(std::shared_ptr<StateData>);
+	~MainMenuState();
+
+  private:
+	Nz::ButtonWidget* m_JoinServerButton;
+	Nz::ButtonWidget* m_CreateServerButton;
+	Nz::ButtonWidget* m_OptionButton;
+	Nz::ButtonWidget* m_QuitButton;
+	std::shared_ptr<AbstractState> m_NextState;
+
+	void LayoutWidgets() override;
+	bool Update(Nz::StateMachine& fsm, Nz::Time elapsedTime) override;
+
+	void OnRenderImgui() override;
+
+	void OnJoinServerPressed();
+	void OnCreateServerPressed();
+	void OnOptionPressed();
+	void OnQuitPressed();
+};
+
+}  // namespace client
+}  // namespace blitz

include/client/states/OptionState.h

@@ -0,0 +1,28 @@
+#pragma once
+
+#include <Nazara/Widgets/ButtonWidget.hpp>
+#include <client/states/AbstractState.h>
+
+namespace blitz {
+namespace client {
+
+class OptionState : public AbstractState {
+  public:
+	OptionState(std::shared_ptr<StateData> a_StateData, std::shared_ptr<AbstractState> a_PreviousState);
+	~OptionState();
+
+  private:
+	Nz::ButtonWidget* m_OptionButton;
+	Nz::ButtonWidget* m_BackButton;
+	std::shared_ptr<AbstractState> m_NextState;
+	std::shared_ptr<AbstractState> m_PreviousState;
+
+	void LayoutWidgets() override;
+	bool Update(Nz::StateMachine& fsm, Nz::Time elapsedTime) override;
+
+	void OnOptionPressed();
+	void OnBackPressed();
+};
+
+}  // namespace client
+}  // namespace blitz

include/client/states/StateData.h

@@ -0,0 +1,34 @@
+#pragma once
+
+#include <Nazara/Core/EnttWorld.hpp>
+#include <Nazara/Platform/Window.hpp>
+#include <Nazara/Renderer/WindowSwapchain.hpp>
+#include <Nazara/Widgets/Canvas.hpp>
+#include <entt/fwd.hpp>
+#include <memory>
+#include <optional>
+
+namespace Nz {
+
+class ApplicationBase;
+class RenderTarget;
+
+}  // namespace Nz
+
+namespace blitz {
+namespace client {
+
+class ClientApp;
+
+struct StateData {
+	std::optional<Nz::Canvas> m_Canvas;
+	std::shared_ptr<Nz::RenderTarget> m_RenderTarget;
+	ClientApp* m_AppComponent;
+	Nz::ApplicationBase* m_App;
+	Nz::EnttWorld* m_World;
+	Nz::Window* m_Window;
+	Nz::WindowSwapchain* m_Swapchain;
+};
+
+}  // namespace client
+}  // namespace blitz

include/server/Server.h

@@ -0,0 +1,45 @@
+#pragma once
+
+#include <blitz/network/EnetServer.h>
+#include <blitz/protocol/PacketHandler.h>
+
+namespace blitz {
+namespace server {
+
+class Server {
+  public:
+	/**
+	 * \brief Construct a server
+	 * \pre Two instances of Server should not share the same world
+	 */
+	Server(std::uint16_t a_Port, Nz::EnttWorld& a_World);
+	~Server();
+
+	network::EnetConnection* GetConnection(std::uint16_t a_PeerId);
+
+	bool IsClosed() const;
+
+	void CloseConnection(std::uint16_t a_PeerId);
+
+	void CloseServer();
+
+  private:
+	void HandleConnect(network::EnetConnection&);
+	void HandleDisconnect(network::EnetConnection&);
+
+	struct Session {
+		network::EnetConnection* m_Connection;
+		std::vector<std::unique_ptr<protocol::PacketHandler>> m_Handlers;
+	};
+
+	EnttWorld m_World;
+	std::map<std::uint16_t, Session> m_Sessions;
+	network::EnetServer m_NetworkServer;
+
+	void RegisterHandlers(Session& session);
+	void RegisterSystems();
+	void CreateEntity(network::EnetConnection&);
+};
+
+}  // namespace server
+}  // namespace blitz

include/server/components/Disconnect.h

@@ -0,0 +1,13 @@
+#pragma once
+
+namespace blitz {
+namespace server {
+
+enum Reason { Timeout };
+
+struct DisconnectComponent {
+	Reason m_Reason;
+};
+
+}  // namespace server
+}  // namespace blitz

include/server/components/EnetConnection.h

@@ -0,0 +1,13 @@
+#pragma once
+
+#include <blitz/network/EnetConnection.h>
+
+namespace blitz {
+namespace server {
+
+struct EnetConnectionComponent {
+	network::EnetConnection* m_Connection;
+};
+
+}  // namespace server
+}  // namespace blitz

include/server/components/KeepAliveSession.h

@@ -0,0 +1,17 @@
+#pragma once
+
+#include <Nazara/Core/Time.hpp>
+#include <cstdint>
+
+namespace blitz {
+namespace server {
+
+struct KeepAliveSessionComponent {
+	std::uint16_t m_PeerId;
+	std::uint64_t m_LastKeepAliveId;
+	Nz::Time m_LastTime;
+	bool m_RecievedResponse = false;
+};
+
+}  // namespace server
+}  // namespace blitz

include/server/components/ServerIdCounter.h

@@ -0,0 +1,13 @@
+#pragma once
+
+#include <blitz/common/Types.h>
+
+namespace blitz {
+namespace server {
+
+struct ServerIdCounterComponent {
+	EntityID m_NextEntityId;
+};
+
+}  // namespace server
+}  // namespace blitz

include/server/handlers/KeepAliveHandler.h

@@ -0,0 +1,20 @@
+#pragma once
+
+#include <blitz/protocol/PacketHandler.h>
+
+namespace blitz {
+namespace server {
+
+class KeepAliveHandler : public protocol::PacketHandler {
+  public:
+	KeepAliveHandler(network::EnetConnection& a_Connection, EnttWorld& a_World);
+	~KeepAliveHandler();
+
+	NazaraSlot(network::EnetConnection, OnKeepAlive, m_Slot);
+
+  private:
+	void Handle(std::uint16_t, const protocol::data::KeepAlive&);
+};
+
+}  // namespace server
+}  // namespace blitz

include/server/handlers/PlayerLoginHandler.h

@@ -0,0 +1,20 @@
+#pragma once
+
+#include <blitz/protocol/PacketHandler.h>
+
+namespace blitz {
+namespace server {
+
+class PlayerLoginHandler : public protocol::PacketHandler {
+  public:
+	PlayerLoginHandler(network::EnetConnection& a_Connection, EnttWorld& a_World);
+	~PlayerLoginHandler();
+
+	NazaraSlot(network::EnetConnection, OnPlayerLogin, m_Slot);
+
+  private:
+	void Handle(std::uint16_t, const protocol::data::PlayerLogin&);
+};
+
+}  // namespace server
+}  // namespace blitz

include/server/systems/DisconnectSystem.h

@@ -0,0 +1,23 @@
+#pragma once
+
+#include <Nazara/Core/Time.hpp>
+#include <blitz/common/Types.h>
+
+namespace blitz {
+namespace server {
+
+class Server;
+
+class DisconnectSystem {
+  public:
+	DisconnectSystem(entt::registry&, EnttWorld& a_World, Server& a_Server);
+
+	void Update(Nz::Time elapsedTime);
+
+  private:
+	EnttWorld& m_World;
+	Server& m_Server;
+};
+
+}  // namespace server
+}  // namespace blitz

include/server/systems/KeepAliveSystem.h

@@ -0,0 +1,21 @@
+#pragma once
+
+#include <Nazara/Core/Time.hpp>
+#include <entt/entity/registry.hpp>
+#include <blitz/common/Types.h>
+
+namespace blitz {
+namespace server {
+
+class KeepAliveSystem {
+  public:
+	KeepAliveSystem(entt::registry&, EnttWorld& a_World);
+
+	void Update(Nz::Time elapsedTime);
+
+  private:
+	EnttWorld& m_World;
+};
+
+}  // namespace server
+}  // namespace blitz

src/ClientMain.cpp

@@ -0,0 +1,20 @@
+#include <Nazara/Core/Application.hpp>
+#include <Nazara/Core/EntitySystemAppComponent.hpp>
+#include <Nazara/Graphics/Graphics.hpp>
+#include <Nazara/Physics3D/Physics3D.hpp>
+#include <Nazara/Platform/WindowingAppComponent.hpp>
+#include <Nazara/Widgets/Widgets.hpp>
+#include <NazaraImgui/NazaraImgui.hpp>
+#include <client/ClientApp.h>
+#include <client/ImGuiAppComponent.h>
+
+int main(int argc, char** argv) {
+	Nz::Application<Nz::Graphics, Nz::Physics3D, Nz::Widgets, Nz::TextRenderer, Nz::Imgui> app(argc, argv);
+
+	app.AddComponent<Nz::EntitySystemAppComponent>();
+	app.AddComponent<Nz::WindowingAppComponent>();
+	auto& client = app.AddComponent<blitz::client::ClientApp>();
+	app.AddComponent<blitz::client::ImGuiAppComponent>(*client.GetWindow());
+
+	return app.Run();
+}

src/ServerMain.cpp

@@ -0,0 +1,56 @@
+#include <server/Server.h>
+
+#include <Nazara/Core/Application.hpp>
+#include <Nazara/Core/EntitySystemAppComponent.hpp>
+#include <Nazara/Network/Network.hpp>
+
+#include <iostream>
+
+void ConsoleLoop(Nz::ApplicationBase& app, blitz::server::Server& server) {
+	std::string line;
+	while (true) {
+		getline(std::cin, line);
+		if (line == "stop") {
+			std::cout << "Exiting ...\n";
+			server.CloseServer();
+			app.Quit();
+			break;
+		}
+	}
+}
+
+static std::uint16_t DefaultPort = 25565;
+
+int main(int argc, char* args[]) {
+	Nz::Application<Nz::Network> app(argc, args);
+
+	const auto& params = app.GetCommandLineParameters();
+
+	std::string_view portString;
+	std::uint16_t port = DefaultPort;
+
+	if (params.GetParameter("port", &portString)) {
+		std::cout << "Selected port : " << portString << "\n";
+		bool ok;
+		port = Nz::StringToNumber(portString, 10, &ok);
+		if (!ok) {
+			std::cerr << "Failed to parse port !\n";
+			port = DefaultPort;
+		}
+	}
+
+	auto& ecs = app.AddComponent<Nz::EntitySystemAppComponent>();
+
+	auto& serverWorld = ecs.AddWorld<Nz::EnttWorld>();
+
+	blitz::server::Server server(port, serverWorld);
+
+	std::cout << "Server running on port " << port << " ...\n";
+
+	std::jthread consoleThread([&app, &server]() { ConsoleLoop(app, server); });
+
+	// tick 20 times per seconds
+	app.AddUpdaterFunc([]() { std::this_thread::sleep_for(std::chrono::milliseconds(50)); });
+
+	return app.Run();
+}

src/blitz/common/Log.cpp

@@ -0,0 +1,35 @@
+#include <blitz/common/Log.h>
+
+
+
+#ifdef BLITZ_ANDROID_LOGGING
+#include <android/log.h>
+#else
+#include <iostream>
+#endif
+
+namespace blitz {
+
+void Log(const std::string& msg) {
+#ifdef BLITZ_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 BLITZ_ANDROID_LOGGING
+	__android_log_print(ANDROID_LOG_ERROR, "TRACKERS", "%s", err.c_str());
+#else
+	std::cerr << err << "\n";
+#endif
+}
+
+}  // namespace blitz

src/blitz/network/EnetClient.cpp

@@ -0,0 +1,64 @@
+#include <blitz/network/EnetClient.h>
+
+namespace blitz {
+namespace network {
+
+EnetClient::EnetClient(const Nz::IpAddress& address) : m_Running(true) {
+	m_Host.Create(address.GetProtocol() == Nz::NetProtocol::IPv4 ? Nz::IpAddress::LoopbackIpV4 : Nz::IpAddress::LoopbackIpV6, 1);
+	m_Peer = m_Host.Connect(address);
+	m_Thread = std::jthread(&EnetClient::WorkerThread, this);
+	m_Connection.SetPeer(m_Peer);
+}
+
+EnetClient::~EnetClient() {
+	if (m_Peer->IsConnected())
+		Disconnect();
+	m_Running = false;
+	m_Thread.request_stop();
+	m_Host.Destroy();
+}
+
+void EnetClient::Disconnect() {
+	m_Peer->DisconnectNow(0);
+	m_Connection.SetPeer(nullptr);
+}
+
+void EnetClient::WorkerThread() {
+	while (m_Running) {
+		Update();
+	}
+}
+
+void EnetClient::Update() {
+	Nz::ENetEvent event;
+	int service = m_Host.Service(&event, 5);
+	if (service > 0) {
+		do {
+			switch (event.type) {
+				case Nz::ENetEventType::Disconnect:
+					OnDisconnect();
+					break;
+
+				case Nz::ENetEventType::DisconnectTimeout:
+					OnDisconnectTimeout();
+					break;
+
+				case Nz::ENetEventType::OutgoingConnect:
+					OnConnect();
+					break;
+
+				case Nz::ENetEventType::Receive:
+					m_Connection.Recieve(event.packet.m_packet->data);
+					break;
+
+				case Nz::ENetEventType::None:
+				case Nz::ENetEventType::IncomingConnect:
+					break;
+			}
+		} while (m_Host.CheckEvents(&event));
+	}
+}
+
+
+}  // namespace network
+}  // namespace blitz

src/blitz/network/EnetConnection.cpp

@@ -0,0 +1,66 @@
+#include <blitz/network/EnetConnection.h>
+
+#include <Nazara/Network/ENetPeer.hpp>
+#include <blitz/protocol/PacketSerializer.h>
+#include <blitz/protocol/PacketVisitor.h>
+
+namespace blitz {
+namespace network {
+
+namespace packets = blitz::protocol::packets;
+
+
+#define DeclarePacket(PacketName, ...)                                                                                                \
+	void Visit(const protocol::packets::PacketName& a_Packet) { m_Connection.On##PacketName(a_Packet.m_Data); }
+
+
+
+class PacketDispatcher : public protocol::PacketVisitor {
+  public:
+	PacketDispatcher(EnetConnection& a_Connection) : m_Connection(a_Connection) {}
+
+	DeclareAllPacket()
+
+		private : EnetConnection& m_Connection;
+};
+
+#undef DeclarePacket
+
+
+
+
+
+EnetConnection::EnetConnection(Nz::ENetPeer* a_Peer) : m_Peer(a_Peer) {}
+
+void EnetConnection::SetPeer(Nz::ENetPeer* a_Peer) {
+	m_Peer = a_Peer;
+}
+
+std::uint16_t EnetConnection::GetPeerId() const {
+	assert(m_Peer);
+	return m_Peer->GetPeerId();
+}
+
+bool EnetConnection::IsConnected() const {
+	if (!m_Peer)
+		return false;
+	return m_Peer->IsConnected();
+}
+
+void EnetConnection::Recieve(Nz::ByteArray& a_Data) {
+	auto packet = protocol::PacketSerializer::Deserialize(a_Data);
+	if (!packet)
+		return;
+	PacketDispatcher dispatcher(*this);
+	dispatcher.Check(*packet.get());
+}
+
+#define DeclarePacket(Name, NFlag, ...)                                                                                               \
+	void EnetConnection::Send##Name(const blitz::protocol::data::Name& a_##Name) const {                                              \
+		m_Peer->Send(0, Nz::ENetPacketFlag::NFlag, protocol::PacketSerializer::Serialize(protocol::packets::Name(a_##Name)));         \
+	}
+
+DeclareAllPacket()
+
+}  // namespace network
+}  // namespace blitz

src/blitz/network/EnetServer.cpp

@@ -0,0 +1,112 @@
+#include <blitz/network/EnetServer.h>
+
+#include <Nazara/Core/ByteStream.hpp>
+
+namespace blitz {
+namespace network {
+
+EnetServer::EnetServer(std::uint16_t a_Port) : m_Running(true) {
+	m_Running = m_Host.Create(Nz::NetProtocol::Any, a_Port, 80);
+	if (m_Running) {
+		m_Host.AllowsIncomingConnections(true);
+		m_Thread = std::jthread(&EnetServer::WorkerThread, this);
+	}
+}
+
+void EnetServer::WorkerThread() {
+	while (m_Running) {
+		Update();
+	}
+}
+
+EnetServer::~EnetServer() {
+	if (m_Running)
+		Destroy();
+}
+
+void EnetServer::Update() {
+	Nz::ENetEvent event;
+	int service = m_Host.Service(&event, 5);
+	if (service > 0) {
+		do {
+			switch (event.type) {
+				case Nz::ENetEventType::Disconnect: {
+					EnetConnection* connection = GetConnection(event.peer->GetPeerId());
+					if (!connection)
+						break;
+					OnClientDisconnect(*connection);
+					RemoveConnection(connection->GetPeerId());
+					break;
+				}
+
+				case Nz::ENetEventType::DisconnectTimeout: {
+					EnetConnection* connection = GetConnection(event.peer->GetPeerId());
+					if (!connection)
+						break;
+					OnClientDisconnectTimeout(*connection);
+					RemoveConnection(connection->GetPeerId());
+					break;
+				}
+
+				case Nz::ENetEventType::IncomingConnect: {
+					Nz::ENetPeer* peer = event.peer;
+					auto con = std::make_unique<EnetConnection>(peer);
+					m_Connections.insert({peer->GetPeerId(), std::move(con)});
+					OnClientConnect(*GetConnection(peer->GetPeerId()));
+					break;
+				}
+
+				case Nz::ENetEventType::Receive: {
+					EnetConnection* connection = GetConnection(event.peer->GetPeerId());
+					if (!connection)
+						break;
+					connection->Recieve(event.packet.m_packet->data);
+					break;
+				}
+
+				case Nz::ENetEventType::OutgoingConnect:
+				case Nz::ENetEventType::None:
+					break;
+			}
+		} while (m_Host.CheckEvents(&event));
+	} else if (service < 0) {
+		m_Running = false;
+	}
+}
+
+EnetConnection* EnetServer::GetConnection(std::uint16_t a_PeerId) {
+	auto it = m_Connections.find(a_PeerId);
+
+	if (it == m_Connections.end())
+		return nullptr;
+
+	return it->second.get();
+}
+
+void EnetServer::CloseConnection(std::uint16_t a_PeerId) {
+	auto connection = GetConnection(a_PeerId);
+
+	if (!connection)
+		return;
+
+	connection->m_Peer->DisconnectNow(0);
+	OnClientDisconnect(*connection);
+	RemoveConnection(a_PeerId);
+}
+
+void EnetServer::RemoveConnection(std::uint16_t a_PeerId) {
+	m_Connections.erase(a_PeerId);
+}
+
+void EnetServer::Destroy() {
+	m_Running = false;
+	m_Thread.request_stop();
+	m_Host.Destroy();
+}
+
+bool EnetServer::IsClosed() const {
+	return !m_Running;
+}
+
+}  // namespace network
+}  // namespace blitz

src/blitz/protocol/PacketFactory.cpp

@@ -0,0 +1,28 @@
+#include <blitz/protocol/PacketFactory.h>
+
+#include <array>
+#include <cassert>
+#include <functional>
+
+namespace blitz {
+namespace protocol {
+namespace PacketFactory {
+
+using PacketCreator = std::function<std::unique_ptr<Packet>()>;
+
+#define DeclarePacket(PacketName, ...) std::make_unique<packets::PacketName>(),
+
+static const 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 blitz

src/blitz/protocol/PacketHandler.cpp

@@ -0,0 +1,12 @@
+#include <blitz/protocol/PacketHandler.h>
+
+namespace blitz {
+namespace protocol {
+
+PacketHandler::PacketHandler(network::EnetConnection& a_Connection, EnttWorld& a_World) :
+	m_Connection(a_Connection), m_World(a_World) {}
+
+PacketHandler::~PacketHandler() {}
+
+}  // namespace protocol
+}  // namespace blitz

src/blitz/protocol/PacketSerializer.cpp

@@ -0,0 +1,289 @@
+#include <blitz/protocol/PacketSerializer.h>
+
+#include <Nazara/Core/ByteStream.hpp>
+#include <blitz/protocol/PacketFactory.h>
+#include <blitz/protocol/PacketVisitor.h>
+
+namespace blitz {
+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:
+	Nz::ByteStream& m_Buffer;
+
+  public:
+	Serializer(Nz::ByteStream& 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:
+	Nz::ByteStream& m_Buffer;
+	PacketPtr m_Packet;
+
+  public:
+	Deserializer(Nz::ByteStream&& a_Buffer) : m_Buffer(a_Buffer) {}
+
+	bool Deserialize(const PacketPtr& a_Packet) {
+		try {
+			Check(*a_Packet.get());
+		} catch (std::exception& e) {
+			return false;
+		}
+		return true;
+	}
+
+	PacketPtr& GetPacket() {
+		return m_Packet;
+	}
+
+	DeclareAllPacket()
+};
+
+
+
+
+
+Nz::ByteArray Serialize(const Packet& a_Packet) {
+	Nz::ByteArray buffer;
+	Nz::ByteStream stream(&buffer, Nz::OpenMode::Write);
+	
+	Serializer serializer(stream);
+	serializer.Serialize(a_Packet);
+
+	buffer.ShrinkToFit();
+
+	return buffer;
+}
+
+std::unique_ptr<Packet> Deserialize(Nz::ByteArray& a_Data) {
+	Nz::ByteStream stream(&a_Data, Nz::OpenMode::Read);
+
+	PacketID packetId;
+	stream >> 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(std::move(stream));
+	if (deserializer.Deserialize(emptyPacket)) {
+		PacketPtr packet = std::move(deserializer.GetPacket());
+		return packet;
+	}
+
+	return nullptr;
+}
+
+
+
+
+
+//---------------------------------------------
+// Packet serializer implementation
+//----------------------------------------------
+
+
+
+
+
+void Serializer::SerializePacketData(const data::PlayerLogin& a_Packet) {
+	m_Buffer << a_Packet.m_PlayerName;
+}
+
+void Deserializer::DeserializePacketData(data::PlayerLogin& a_Packet) {
+	m_Buffer >> a_Packet.m_PlayerName;
+}
+
+
+
+
+void Serializer::SerializePacketData(const data::UpdateHealth& a_Packet) {
+	m_Buffer << a_Packet.m_NewHealth;
+}
+
+void Deserializer::DeserializePacketData(data::UpdateHealth& a_Packet) {
+	m_Buffer >> a_Packet.m_NewHealth;
+}
+
+
+
+
+void Serializer::SerializePacketData(const data::LoggingSuccess& a_Packet) {
+	m_Buffer << a_Packet.m_PlayerId;
+}
+
+void Deserializer::DeserializePacketData(data::LoggingSuccess& a_Packet) {
+	m_Buffer >> a_Packet.m_PlayerId;
+}
+
+
+
+
+void Serializer::SerializePacketData(const data::PlayerDeath& a_Packet) {}
+
+void Deserializer::DeserializePacketData(data::PlayerDeath& a_Packet) {}
+
+
+
+
+void Serializer::SerializePacketData(const data::PlayerJoin& a_Packet) {
+	m_Buffer << a_Packet.m_Player.m_PlayerId << a_Packet.m_Player.m_Pseudo;
+}
+
+void Deserializer::DeserializePacketData(data::PlayerJoin& a_Packet) {
+	m_Buffer >> a_Packet.m_Player.m_PlayerId >> a_Packet.m_Player.m_Pseudo;
+}
+
+
+
+
+void Serializer::SerializePacketData(const data::PlayerLeave& a_Packet) {
+	m_Buffer << a_Packet.m_PlayerId;
+}
+
+void Deserializer::DeserializePacketData(data::PlayerLeave& a_Packet) {
+	m_Buffer >> a_Packet.m_PlayerId;
+}
+
+
+
+
+void Serializer::SerializePacketData(const data::PlayerList& a_Packet) {
+	m_Buffer << static_cast<std::uint8_t>(a_Packet.m_Players.size());
+	for (auto player : a_Packet.m_Players) {
+		m_Buffer << player.m_PlayerId << player.m_Pseudo;
+	}
+}
+
+void Deserializer::DeserializePacketData(data::PlayerList& a_Packet) {
+	std::uint8_t playerCount;
+	m_Buffer >> playerCount;
+	for (std::uint8_t i = 0; i < playerCount; i++) {
+		PlayerInfoComponent player;
+		m_Buffer >> player.m_PlayerId >> player.m_Pseudo;
+		a_Packet.m_Players.push_back(player);
+	}
+}
+
+
+
+
+void Serializer::SerializePacketData(const data::PlayerStats& a_Packet) {}
+
+void Deserializer::DeserializePacketData(data::PlayerStats& a_Packet) {}
+
+
+
+
+void Serializer::SerializePacketData(const data::ServerConfig& a_Packet) {}
+
+void Deserializer::DeserializePacketData(data::ServerConfig& a_Packet) {}
+
+
+
+
+void Serializer::SerializePacketData(const data::ServerTps& a_Packet) {}
+
+void Deserializer::DeserializePacketData(data::ServerTps& a_Packet) {}
+
+
+
+
+void Serializer::SerializePacketData(const data::UpdateGameState& a_Packet) {}
+
+void Deserializer::DeserializePacketData(data::UpdateGameState& a_Packet) {}
+
+
+
+
+void Serializer::SerializePacketData(const data::KeepAlive& a_Packet) {
+	m_Buffer << a_Packet.m_KeepAliveId;
+}
+
+void Deserializer::DeserializePacketData(data::KeepAlive& a_Packet) {
+	m_Buffer >> a_Packet.m_KeepAliveId;
+}
+
+
+
+
+void Serializer::SerializePacketData(const data::Disconnect& a_Packet) {}
+
+void Deserializer::DeserializePacketData(data::Disconnect& a_Packet) {}
+
+
+
+
+void Serializer::SerializePacketData(const data::ChatMessage& a_Packet) {
+	m_Buffer << a_Packet.m_Text;
+}
+
+void Deserializer::DeserializePacketData(data::ChatMessage& a_Packet) {
+	m_Buffer >> a_Packet.m_Text;
+}
+
+
+
+
+void Serializer::SerializePacketData(const data::PlayerPositionAndRotation& a_Packet) {}
+
+void Deserializer::DeserializePacketData(data::PlayerPositionAndRotation& a_Packet) {}
+
+
+
+
+void Serializer::SerializePacketData(const data::PlayerShoot& a_Packet) {}
+
+void Deserializer::DeserializePacketData(data::PlayerShoot& a_Packet) {}
+
+
+
+
+
+}  // namespace PacketSerializer
+}  // namespace protocol
+}  // namespace blitz

src/blitz/protocol/PacketVisitor.cpp

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

src/blitz/protocol/Packets.cpp

@@ -0,0 +1,18 @@
+#define BLITZ_INSTANCIATE_PACKETS
+#include <blitz/protocol/Packets.h>
+
+#include <blitz/protocol/PacketVisitor.h>
+
+namespace blitz {
+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);
+}
+
+}  // namespace protocol
+}  // namespace blitz

src/blitz/systems/RemovePlayersSystem.cpp

@@ -0,0 +1,19 @@
+#include <blitz/systems/RemovePlayersSystem.h>
+
+#include <blitz/components/PlayerRemove.h>
+
+namespace blitz {
+
+RemovePlayersSystem::RemovePlayersSystem(entt::registry&, EnttWorld& a_World) : m_World(a_World) {}
+
+void RemovePlayersSystem::Update(Nz::Time /*elapsedTime*/) {
+	AtomicEnttWorld world = m_World;
+
+	entt::registry& registry = world->GetRegistry();
+
+	auto invalidPlayers = registry.view<PlayerRemoveComponent>();
+
+	registry.destroy(invalidPlayers.begin(), invalidPlayers.end());
+}
+
+}  // namespace blitz

src/blitz/utils/Test.cpp

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

src/client/Client.cpp

@@ -0,0 +1,72 @@
+#include <client/Client.h>
+
+#include <blitz/systems/RemovePlayersSystem.h>
+#include <client/handlers/KeepAliveHandler.h>
+#include <client/handlers/LoggingSuccessHandler.h>
+#include <client/handlers/PlayerJoinHandler.h>
+#include <client/handlers/PlayerLeaveHandler.h>
+#include <client/handlers/PlayerListHandler.h>
+
+namespace blitz {
+namespace client {
+
+Client::Client(Nz::EnttWorld& a_World) : m_World({a_World}) {
+	AtomicEnttWorld world = m_World;
+	world->AddSystem<RemovePlayersSystem>(m_World);
+}
+
+Client::~Client() {
+	Disconnect();
+
+	AtomicEnttWorld world = m_World;
+	world->RemoveSystem<RemovePlayersSystem>();
+}
+
+void Client::BindHandlers() {
+	m_NetworkClient->OnDisconnect.Connect([this]() { OnClientDisconnect(); });
+	m_NetworkClient->OnDisconnectTimeout.Connect([this]() { OnClientDisconnect(); });
+
+	m_Handlers.push_back(std::make_unique<KeepAliveHandler>(m_NetworkClient->GetConnection(), m_World));
+	m_Handlers.push_back(std::make_unique<LoggingSuccessHandler>(m_NetworkClient->GetConnection(), m_World));
+	auto playerJoin = std::make_unique<PlayerJoinHandler>(m_NetworkClient->GetConnection(), m_World);
+	playerJoin->OnLocalPlayerReady.Connect([this]() { OnClientReady(); });
+	m_Handlers.push_back(std::move(playerJoin));
+	m_Handlers.push_back(std::make_unique<PlayerLeaveHandler>(m_NetworkClient->GetConnection(), m_World));
+	m_Handlers.push_back(std::make_unique<PlayerListHandler>(m_NetworkClient->GetConnection(), m_World));
+}
+
+void Client::UnbindHandlers() {
+	m_Handlers.clear();
+}
+
+void Client::Connect(const Nz::IpAddress& a_Ip) {
+	m_NetworkClient = std::make_unique<network::EnetClient>(a_Ip);
+	BindHandlers();
+	m_NetworkClient->OnConnect.Connect([this]() { Login(); });
+}
+
+void Client::Disconnect() {
+	if (!m_NetworkClient)
+		return;
+	m_NetworkClient->GetConnection().SendDisconnect({});
+	m_NetworkClient->Disconnect();
+	UnbindHandlers();
+	m_NetworkClient.reset(nullptr);
+}
+
+bool Client::IsConnected() {
+	if (!m_NetworkClient)
+		return false;
+
+	return m_NetworkClient->GetConnection().IsConnected();
+}
+
+void Client::Login() {
+	srand(time(0));
+	if (!m_NetworkClient || !m_NetworkClient->GetConnection().IsConnected())
+		return;
+	m_NetworkClient->GetConnection().SendPlayerLogin({"Player_" + std::to_string(rand() % 100)});
+}
+
+}  // namespace client
+}  // namespace blitz

src/client/ClientApp.cpp

@@ -0,0 +1,80 @@
+#include <client/ClientApp.h>
+
+#include <Nazara/Core.hpp>
+#include <Nazara/Core/StateMachine.hpp>
+#include <Nazara/Graphics.hpp>
+#include <Nazara/Physics3D.hpp>
+#include <Nazara/Platform.hpp>
+#include <Nazara/Renderer.hpp>
+#include <Nazara/Widgets.hpp>
+#include <NazaraImgui/NazaraImgui.hpp>
+#include <client/states/MainMenuState.h>
+#include <random>
+
+namespace blitz {
+namespace client {
+
+constexpr Nz::UInt32 RenderMaskUI = 0x00010000;
+constexpr Nz::UInt32 RenderMask3D = 0x0000FFFF;
+
+ClientApp::ClientApp(Nz::ApplicationBase& app) : Nz::ApplicationComponent(app), m_StateMachine(std::make_unique<Nz::StateMachine>()) {
+	auto& windowing = app.GetComponent<Nz::WindowingAppComponent>();
+
+	std::string windowTitle = "Blitz 2";
+	m_Window = &windowing.CreateWindow(Nz::VideoMode(1920, 1080, 32), windowTitle);
+
+	auto& ecs = app.GetComponent<Nz::EntitySystemAppComponent>();
+
+	auto& world = ecs.AddWorld<Nz::EnttWorld>();
+
+	Nz::RenderSystem& renderSystem = world.AddSystem<Nz::RenderSystem>();
+
+	Nz::SwapchainParameters params;
+	params.presentMode.clear();
+	params.presentMode.push_back(Nz::PresentMode::VerticalSync);
+
+	Nz::WindowSwapchain& windowSwapchain = renderSystem.CreateSwapchain(*m_Window, params);
+
+	auto renderTarget = std::make_shared<Nz::RenderWindow>(windowSwapchain);
+
+	Nz::Imgui::Instance()->Init(*m_Window, false);
+
+	auto passList = Nz::PipelinePassList::LoadFromFile("assets/example.passlist");
+
+	entt::handle cameraEntity = world.CreateEntity();
+	{
+		cameraEntity.emplace<Nz::NodeComponent>();
+
+		auto& cameraComponent = cameraEntity.emplace<Nz::CameraComponent>(renderTarget, passList, Nz::ProjectionType::Orthographic);
+
+		cameraComponent.UpdateClearColor(Nz::Color(0.0f, 0.f, .0f, 0.0f));
+		cameraComponent.UpdateRenderMask(RenderMaskUI);
+		cameraComponent.UpdateRenderOrder(1);
+	}
+
+	m_StateData = std::make_shared<StateData>();
+	m_StateData->m_App = &app;
+	m_StateData->m_AppComponent = this;
+	m_StateData->m_RenderTarget = renderTarget;
+	m_StateData->m_Window = m_Window;
+	m_StateData->m_Swapchain = &windowSwapchain;
+	m_StateData->m_World = &world;
+	m_StateData->m_Canvas.emplace(
+		world.GetRegistry(), m_Window->GetEventHandler(), m_Window->GetCursorController().CreateHandle(), RenderMaskUI);
+	m_StateData->m_Canvas->Resize(Nz::Vector2f(m_Window->GetSize()));
+
+	m_StateMachine->PushState(std::make_shared<MainMenuState>(m_StateData));
+}
+
+ClientApp::~ClientApp() {
+	m_StateMachine->ResetState(nullptr);
+	m_StateMachine->Update(Nz::Time::Zero());
+}
+
+void ClientApp::Update(Nz::Time elapsedTime) {
+	if (!m_StateMachine->Update(elapsedTime))
+		GetApp().Quit();
+}
+
+}  // namespace client
+}  // namespace blitz

src/client/ImGuiAppComponent.cpp

@@ -0,0 +1,96 @@
+#include <client/ImGuiAppComponent.h>
+
+#include <Nazara/Core/ApplicationBase.hpp>
+#include <Nazara/Platform/Window.hpp>
+#include <NazaraImgui/NazaraImgui.hpp>
+
+#include <blitz/common/Log.h>
+
+namespace blitz {
+namespace client {
+
+ImGuiAppComponent::ImGuiAppComponent(Nz::ApplicationBase& a_App, Nz::Window& a_Window) :
+	Nz::ApplicationComponent(a_App), m_Window(a_Window) {
+
+	ImGui::EnsureContextOnThisThread();
+
+	SetStyle();
+
+	a_App.AddUpdaterFunc(Nz::ApplicationBase::Interval{Nz::Time::Milliseconds(16)}, [&](Nz::Time elapsed) {
+		if (!m_Window.IsOpen())
+			return;
+
+		m_Window.ProcessEvents();
+
+		Nz::Imgui::Instance()->Update(Nz::Time::Milliseconds(16).AsSeconds());
+
+		Nz::Imgui::Instance()->Render();
+	});
+}
+
+ImGuiAppComponent::~ImGuiAppComponent() {}
+
+void ImGuiAppComponent::SetStyle() {
+	const static ImVec4 colorButton = {1.0f, 0.0f, 0.0f, 0.73f};
+	const static ImVec4 colorButtonHover = {0.56f, 0.02f, 0.02f, 1.0f};
+	const static ImVec4 colorButtonActive = {0.36f, 0.03f, 0.03f, 1.0f};
+	const static ImVec4 colorCheckMark = {1.0f, 1.0f, 1.0f, 1.0f};
+	const static ImVec4 colorTab = {0.38f, 0.02f, 0.02f, 1.0f};
+	const static ImVec4 colorTabHover = {0.74f, 0.0f, 0.0f, 0.73f};
+	const static ImVec4 colorTabActive = {1.0f, 0.0f, 0.0f, 0.73f};
+
+
+	ImGui::GetStyle().Colors[ImGuiCol_Button] = colorButton;
+	ImGui::GetStyle().Colors[ImGuiCol_ButtonActive] = colorButtonActive;
+	ImGui::GetStyle().Colors[ImGuiCol_ButtonHovered] = colorButtonHover;
+	ImGui::GetStyle().Colors[ImGuiCol_CheckMark] = colorCheckMark;
+	ImGui::GetStyle().Colors[ImGuiCol_FrameBg] = colorButton;
+	ImGui::GetStyle().Colors[ImGuiCol_FrameBgActive] = colorButtonActive;
+	ImGui::GetStyle().Colors[ImGuiCol_FrameBgHovered] = colorButtonHover;
+	ImGui::GetStyle().Colors[ImGuiCol_Tab] = colorTab;
+	ImGui::GetStyle().Colors[ImGuiCol_TabHovered] = colorTabHover;
+	ImGui::GetStyle().Colors[ImGuiCol_TabActive] = colorTabActive;
+	ImGui::GetStyle().Colors[ImGuiCol_TitleBgActive] = colorTabActive;
+	ImGui::GetStyle().Colors[ImGuiCol_SliderGrab] = colorButton;
+	ImGui::GetStyle().Colors[ImGuiCol_SliderGrabActive] = colorButton;
+	ImGui::GetStyle().Colors[ImGuiCol_HeaderActive] = colorTab;
+	ImGui::GetStyle().Colors[ImGuiCol_HeaderHovered] = colorTabActive;
+	ImGui::GetStyle().Colors[ImGuiCol_Header] = colorTabActive;
+
+	static const float DefaultFontSize = 25.0f;
+
+	ImFontConfig c;
+	c.SizePixels = DefaultFontSize;
+	c.OversampleH = 1;	// prevent from blurring font
+
+	ImGui::GetIO().Fonts->AddFontDefault(&c);
+
+	auto* doomFont = ImGui::GetIO().Fonts->AddFontFromFileTTF("assets/fonts/doom.ttf", DefaultFontSize, &c);
+	ImGui::GetIO().FontDefault = doomFont;
+
+	UpdateFontTexture();
+}
+
+void ImGuiAppComponent::UpdateFontTexture() {
+	auto& io = ImGui::GetIO();
+	unsigned char* pixels;
+	int width, height;
+
+	io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);
+
+	auto renderDevice = Nz::Graphics::Instance()->GetRenderDevice();
+	Nz::TextureInfo texParams;
+	texParams.width = width;
+	texParams.height = height;
+	texParams.pixelFormat = Nz::PixelFormat::RGBA8;
+	texParams.type = Nz::ImageType::E2D;
+	m_FontTexture = renderDevice->InstantiateTexture(texParams, pixels, true);
+	m_FontTexture->UpdateDebugName("FontTexture");
+
+	ImTextureID textureID = m_FontTexture.get();
+	io.Fonts->TexID = textureID;
+}
+
+void ImGuiAppComponent::Update(Nz::Time elapsedTime) {}
+}  // namespace client
+}  // namespace blitz

src/client/handlers/KeepAliveHandler.cpp

@@ -0,0 +1,18 @@
+#include <client/handlers/KeepAliveHandler.h>
+
+namespace blitz {
+namespace client {
+
+KeepAliveHandler::KeepAliveHandler(network::EnetConnection& a_Connection, EnttWorld& a_World) :
+	protocol::PacketHandler(a_Connection, a_World) {
+	m_Slot.Connect(m_Connection.OnKeepAlive, this, &KeepAliveHandler::Handle);
+}
+
+void KeepAliveHandler::Handle(const blitz::protocol::data::KeepAlive& a_KeepAlive) {
+	m_Connection.SendKeepAlive(a_KeepAlive);
+}
+
+KeepAliveHandler::~KeepAliveHandler() {}
+
+}  // namespace client
+}  // namespace blitz

src/client/handlers/LoggingSuccessHandler.cpp

@@ -0,0 +1,22 @@
+#include <client/handlers/LoggingSuccessHandler.h>
+
+#include <client/components/LocalPlayer.h>
+
+namespace blitz {
+namespace client {
+
+LoggingSuccessHandler::LoggingSuccessHandler(network::EnetConnection& a_Connection, EnttWorld& a_World) :
+	protocol::PacketHandler(a_Connection, a_World) {
+	m_Slot.Connect(m_Connection.OnLoggingSuccess, this, &LoggingSuccessHandler::Handle);
+}
+
+void LoggingSuccessHandler::Handle(const blitz::protocol::data::LoggingSuccess& a_LoggingSuccess) {
+	AtomicEnttWorld world = m_World;
+	auto player = world->CreateEntity();
+	player.emplace<LocalPlayerComponent>(a_LoggingSuccess.m_PlayerId);
+}
+
+LoggingSuccessHandler::~LoggingSuccessHandler() {}
+
+}  // namespace client
+}  // namespace blitz

src/client/handlers/PlayerJoinHandler.cpp

@@ -0,0 +1,36 @@
+#include <client/handlers/PlayerJoinHandler.h>
+
+#include <client/components/LocalPlayer.h>
+
+namespace blitz {
+namespace client {
+
+PlayerJoinHandler::PlayerJoinHandler(network::EnetConnection& a_Connection, EnttWorld& a_World) :
+	protocol::PacketHandler(a_Connection, a_World) {
+	m_Slot.Connect(m_Connection.OnPlayerJoin, this, &PlayerJoinHandler::Handle);
+}
+
+void PlayerJoinHandler::Handle(const protocol::data::PlayerJoin& a_PlayerJoin) {
+	AtomicEnttWorld world = m_World;
+	assert(world->GetRegistry().view<LocalPlayerComponent>().size() == 1 && "There should be only one local player !");
+
+	auto localPlayer = world->GetRegistry().view<LocalPlayerComponent>().front();
+	auto localPlayerId = world->GetRegistry().get<LocalPlayerComponent>(localPlayer).m_LocalPlayerId;
+
+	if (a_PlayerJoin.m_Player.m_PlayerId != localPlayerId) {
+		auto newPlayer = world->CreateEntity();
+
+		newPlayer.emplace<PlayerInfoComponent>(a_PlayerJoin.m_Player);
+		return;
+	}
+
+	world->GetRegistry().emplace<PlayerInfoComponent>(localPlayer, a_PlayerJoin.m_Player);
+
+	// we are now into the game so we can begin to load the world for example
+	OnLocalPlayerReady();
+}
+
+PlayerJoinHandler::~PlayerJoinHandler() {}
+
+}  // namespace client
+}  // namespace blitz

src/client/handlers/PlayerLeaveHandler.cpp

@@ -0,0 +1,27 @@
+#include <client/handlers/PlayerLeaveHandler.h>
+
+#include <blitz/components/PlayerRemove.h>
+
+namespace blitz {
+namespace client {
+
+PlayerLeaveHandler::PlayerLeaveHandler(network::EnetConnection& a_Connection, EnttWorld& a_World) :
+	protocol::PacketHandler(a_Connection, a_World) {
+	m_Slot.Connect(m_Connection.OnPlayerLeave, this, &PlayerLeaveHandler::Handle);
+}
+
+void PlayerLeaveHandler::Handle(const protocol::data::PlayerLeave& a_PlayerLeave) {
+	AtomicEnttWorld world = m_World;
+
+	for (auto [player, playerInfo] : world->GetRegistry().view<PlayerInfoComponent>().each()) {
+		if (playerInfo.m_PlayerId == a_PlayerLeave.m_PlayerId) {
+			world->GetRegistry().emplace<PlayerRemoveComponent>(player);
+			break;
+		}
+	}
+}
+
+PlayerLeaveHandler::~PlayerLeaveHandler() {}
+
+}  // namespace client
+}  // namespace blitz

src/client/handlers/PlayerListHandler.cpp

@@ -0,0 +1,22 @@
+#include <client/handlers/PlayerListHandler.h>
+
+namespace blitz {
+namespace client {
+
+PlayerListHandler::PlayerListHandler(network::EnetConnection& a_Connection, EnttWorld& a_World) :
+	protocol::PacketHandler(a_Connection, a_World) {
+	m_Slot.Connect(m_Connection.OnPlayerList, this, &PlayerListHandler::Handle);
+}
+
+void PlayerListHandler::Handle(const protocol::data::PlayerList& a_PlayerList) {
+	AtomicEnttWorld world = m_World;
+	for (auto playerInfo : a_PlayerList.m_Players) {
+		auto player = world->CreateEntity();
+		player.emplace<PlayerInfoComponent>(playerInfo);
+	}
+}
+
+PlayerListHandler::~PlayerListHandler() {}
+
+}  // namespace client
+}  // namespace blitz

src/client/states/AbstractState.cpp

@@ -0,0 +1,57 @@
+#include <client/states/AbstractState.h>
+
+namespace blitz {
+namespace client {
+
+AbstractState::AbstractState(std::shared_ptr<StateData> a_StateData) : m_StateData(std::move(a_StateData)), m_IsVisible(false) {
+	m_OnTargetChangeSizeSlot.Connect(
+		m_StateData->m_RenderTarget->OnRenderTargetSizeChange, [this](const Nz::RenderTarget*, const Nz::Vector2ui& /*newSize*/) {
+			if (m_IsVisible)
+				LayoutWidgets();
+		});
+}
+
+AbstractState::~AbstractState() {
+	for (const auto& cleanupFunc : m_CleanupFunctions)
+		cleanupFunc();
+
+	for (WidgetEntry& entry : m_Widgets)
+		entry.m_Widget->Destroy();
+}
+
+void AbstractState::DestroyWidget(Nz::BaseWidget* widget) {
+	auto it = std::find_if(
+		m_Widgets.begin(), m_Widgets.end(), [&](const WidgetEntry& widgetEntity) { return widgetEntity.m_Widget == widget; });
+	assert(it != m_Widgets.end());
+
+	m_Widgets.erase(it);
+
+	widget->Destroy();
+}
+
+void AbstractState::Enter(Nz::StateMachine& /*fsm*/) {
+	m_IsVisible = true;
+
+	for (WidgetEntry& entry : m_Widgets) {
+		if (entry.m_WasVisible)
+			entry.m_Widget->Show();
+	}
+
+	LayoutWidgets();
+}
+
+void AbstractState::Leave(Nz::StateMachine& /*fsm*/) {
+	m_IsVisible = false;
+
+	for (WidgetEntry& entry : m_Widgets) {
+		entry.m_WasVisible = entry.m_Widget->IsVisible();
+		entry.m_Widget->Hide();
+	}
+}
+
+bool AbstractState::Update(Nz::StateMachine& /*fsm*/, Nz::Time /*elapsedTime*/) {
+	return true;
+}
+
+}  // namespace client
+}  // namespace blitz

src/client/states/ConnectingState.cpp

@@ -0,0 +1,189 @@
+#include "client/states/GameState.h"
+#include <client/states/ConnectingState.h>
+
+#include <Nazara/Core/ApplicationBase.hpp>
+#include <Nazara/Core/Clock.hpp>
+#include <Nazara/Core/EntitySystemAppComponent.hpp>
+#include <Nazara/Core/EnttWorld.hpp>
+#include <Nazara/Core/StateMachine.hpp>
+#include <Nazara/Core/Time.hpp>
+#include <Nazara/Network/Algorithm.hpp>
+#include <Nazara/Network/IpAddress.hpp>
+#include <Nazara/TextRenderer.hpp>
+#include <Nazara/TextRenderer/SimpleTextDrawer.hpp>
+#include <blitz/common/Format.h>
+#include <blitz/common/Log.h>
+#include <client/Client.h>
+#include <memory>
+#include <server/Server.h>
+
+namespace blitz {
+namespace client {
+
+static const int ConnectTimeout = 5;
+
+ConnectingState::ConnectingState(std::shared_ptr<StateData> a_StateData, std::shared_ptr<AbstractState> a_PreviousState,
+	const std::string& a_Address, std::uint16_t a_Port, bool a_Server) :
+	AbstractState(std::move(a_StateData)),
+	m_PreviousState(std::move(a_PreviousState)),
+	m_Client(std::make_unique<Client>(*GetStateData().m_World)) {
+	m_ResolvingData.m_Port = a_Port;
+	m_ResolvingData.m_ServerName = a_Address;
+
+	Nz::SimpleTextDrawer textDrawer;
+	textDrawer.SetTextColor({0.0, 0.0, 0.0, 1.0});
+	textDrawer.SetCharacterSize(75);
+	m_BackButton = CreateWidget<Nz::ButtonWidget>();
+	textDrawer.SetText("Back");
+	m_BackButton->UpdateText(textDrawer);
+	m_BackButton->Resize(m_BackButton->GetPreferredSize());
+	m_BackButton->OnButtonTrigger.Connect([this](const Nz::ButtonWidget*) { OnBackPressed(); });
+
+	m_StatusText = CreateWidget<Nz::LabelWidget>();
+	m_StatusText->UpdateText(Nz::SimpleTextDrawer::Draw("Connecting ...", 80));
+
+	if (a_Server) {
+		auto& app = GetStateData().m_App;
+		auto& ecs = app->GetComponent<Nz::EntitySystemAppComponent>();
+
+		// create server
+		Nz::EnttWorld& world = ecs.AddWorld<Nz::EnttWorld>();
+		m_Server = std::make_unique<server::Server>(a_Port, world);
+	}
+
+	m_ClientReady.Connect(m_Client->OnClientReady, [this]() { OnConnect(); });
+	m_ClientDisconnect.Connect(m_Client->OnClientDisconnect, [this]() { TryNextAddress(); });
+
+	TryResolve();
+}
+
+ConnectingState::~ConnectingState() {}
+
+bool ConnectingState::Update(Nz::StateMachine& fsm, Nz::Time elapsedTime) {
+	if (m_NextState)
+		fsm.ChangeState(std::move(m_NextState));
+
+	if (m_Server && m_Server->IsClosed())
+		OnConnectFailed();
+
+	if (m_ResolvingData.m_HasResult) {
+		if (m_ResolvingData.m_Result) {
+			// Register resolved addresses as next addresses
+			const auto& addresses = m_ResolvingData.m_Result.GetValue();
+			for (auto resultIt = addresses.rbegin(); resultIt != addresses.rend(); ++resultIt)
+				m_Addresses.emplace(*resultIt);
+			TryConnect(m_Addresses.front());
+		} else {
+			OnConnectFailed();
+		}
+		m_ResolvingData.m_HasResult = false;
+	}
+
+	static Nz::MillisecondClock clock;
+	static int progress = -1;
+
+	if (m_Client && clock.RestartIfOver(Nz::Time::Milliseconds(500))) {
+		progress++;
+		progress %= 4;
+		std::string textStr = "Connecting ";
+		for (int i = 0; i < progress; i++) {
+			textStr += ".";
+		}
+		m_StatusText->UpdateText(Nz::SimpleTextDrawer::Draw(textStr, 80));
+		return true;
+	}
+
+	if (!m_Addresses.empty() && m_TimeoutClock.RestartIfOver(Nz::Time::Seconds(ConnectTimeout))) {
+		TryNextAddress();
+	}
+
+	if (m_IsConnected) {
+		fsm.ResetState(std::make_shared<GameState>(GetStateDataPtr(), std::move(m_Client), std::move(m_Server)));
+	}
+
+	return true;
+}
+
+void ConnectingState::TryConnect(const Nz::IpAddress& a_ServerAddress) {
+	if (!m_Client)
+		return;
+	LogD("Trying to connect to " + a_ServerAddress.ToString() + " ...");
+	m_TimeoutClock.Restart();
+	m_Client->Connect(a_ServerAddress);
+}
+
+void ConnectingState::TryNextAddress() {
+	m_Client->Disconnect();
+	m_Addresses.pop();
+	if (m_Addresses.empty())
+		OnConnectFailed();
+	else
+		TryConnect(m_Addresses.front());
+}
+
+void ConnectingState::TryResolve() {
+	Nz::ResolveError resolveError;
+	auto serverAddresses = Nz::IpAddress::ResolveHostname(
+		Nz::NetProtocol::Any, m_ResolvingData.m_ServerName, std::to_string(m_ResolvingData.m_Port), &resolveError);
+	if (serverAddresses.empty()) {
+		m_ResolvingData.m_Result = Nz::Err(Nz::ErrorToString(resolveError));
+		LogD("Failed to resolve " + m_ResolvingData.m_ServerName + " !");
+	} else {
+		std::vector<Nz::IpAddress> addresses;
+		addresses.reserve(serverAddresses.size());
+		for (auto hostnameInfo : serverAddresses) {
+			hostnameInfo.address.SetPort(m_ResolvingData.m_Port);
+			addresses.push_back(hostnameInfo.address);
+		}
+
+		m_ResolvingData.m_Result = std::move(addresses);
+	}
+
+	m_ResolvingData.m_HasResult = true;
+}
+
+void ConnectingState::LayoutWidgets() {
+	Nz::Vector2f canvasSize = GetStateData().m_Canvas->GetSize();
+	Nz::Vector2f center = canvasSize / 2.f;
+
+	constexpr float padding = 10.f;
+
+	std::array<Nz::BaseWidget*, 2> widgets = {m_StatusText, m_BackButton};
+
+	float maxWidth = 0.f;
+	float totalSize = padding * (widgets.size() - 1);
+	for (Nz::BaseWidget* widget : widgets) {
+		Nz::Vector2f size = widget->GetSize();
+
+		maxWidth = std::max(maxWidth, size.x);
+		totalSize += size.y;
+	}
+
+	Nz::Vector2f cursor = center;
+	cursor.y += totalSize / 2.f;
+
+	for (Nz::BaseWidget* widget : widgets) {
+		widget->Resize({maxWidth, widget->GetHeight()});
+		widget->SetPosition({0.f, cursor.y - widget->GetSize().y, 0.f});
+		widget->CenterHorizontal();
+		cursor.y -= widget->GetSize().y + padding;
+	}
+}
+
+void ConnectingState::OnBackPressed() {
+	m_NextState = std::move(m_PreviousState);
+}
+
+void ConnectingState::OnConnect() {
+	m_IsConnected = true;
+}
+
+void ConnectingState::OnConnectFailed() {
+	m_StatusText->UpdateText(Nz::SimpleTextDrawer::Draw("Connection failed !", 80));
+	m_StatusText->CenterHorizontal();
+	m_Server.reset(nullptr);
+	m_Client.reset(nullptr);
+}
+
+}  // namespace client
+}  // namespace blitz

src/client/states/CreateServerState.cpp

@@ -0,0 +1,108 @@
+#include <Nazara/Core/Color.hpp>
+#include <Nazara/Network/IpAddress.hpp>
+#include <Nazara/Widgets/TextAreaWidget.hpp>
+#include <client/states/CreateServerState.h>
+
+#include <Nazara/Core/StateMachine.hpp>
+#include <Nazara/TextRenderer.hpp>
+#include <client/Client.h>
+#include <client/states/ConnectingState.h>
+#include <server/Server.h>
+
+namespace blitz {
+namespace client {
+
+CreateServerState::CreateServerState(std::shared_ptr<StateData> a_StateData, std::shared_ptr<AbstractState> a_PreviousState) :
+	AbstractState(std::move(a_StateData)), m_PreviousState(std::move(a_PreviousState)) {
+	Nz::SimpleTextDrawer textDrawer;
+	textDrawer.SetTextColor({0.0, 0.0, 0.0, 1.0});
+	textDrawer.SetCharacterSize(75);
+
+	m_CreateServerButton = CreateWidget<Nz::ButtonWidget>();
+	textDrawer.SetText("Create Server");
+	m_CreateServerButton->UpdateText(textDrawer);
+	m_CreateServerButton->Resize(m_CreateServerButton->GetPreferredSize());
+	m_CreateServerButton->OnButtonTrigger.Connect([this](const Nz::ButtonWidget*) { OnCreateServerPressed(); });
+
+	m_InputPort = CreateWidget<Nz::TextAreaWidget>();
+	m_InputPort->SetBackgroundColor(Nz::Color::White());
+	m_InputPort->EnableBackground(true);
+	m_InputPort->EnableMultiline(false);
+	m_InputPort->SetTextColor(Nz::Color::Black());
+	m_InputPort->SetCharacterFilter([](Nz::UInt32 character) {
+		if (character < U'0' || character > U'9')
+			return false;
+
+		return true;
+	});
+
+	m_BackButton = CreateWidget<Nz::ButtonWidget>();
+	textDrawer.SetText("Back");
+	m_BackButton->UpdateText(textDrawer);
+	m_BackButton->Resize(m_BackButton->GetPreferredSize());
+	m_BackButton->OnButtonTrigger.Connect([this](const Nz::ButtonWidget*) { OnBackPressed(); });
+}
+
+CreateServerState::~CreateServerState() {}
+
+bool CreateServerState::Update(Nz::StateMachine& fsm, Nz::Time /*elapsedTime*/) {
+	if (m_NextState)
+		fsm.ChangeState(std::move(m_NextState));
+
+	return true;
+}
+
+void CreateServerState::LayoutWidgets() {
+	Nz::Vector2f canvasSize = GetStateData().m_Canvas->GetSize();
+	Nz::Vector2f center = canvasSize / 2.f;
+
+	constexpr float padding = 10.f;
+
+	std::array<Nz::BaseWidget*, 3> widgets = {m_InputPort, m_CreateServerButton, m_BackButton};
+
+	float maxWidth = 0.f;
+	float totalSize = padding * (widgets.size() - 1);
+	for (Nz::BaseWidget* widget : widgets) {
+		Nz::Vector2f size = widget->GetSize();
+
+		maxWidth = std::max(maxWidth, size.x);
+		totalSize += size.y;
+	}
+
+	Nz::Vector2f cursor = center;
+	cursor.y += totalSize / 2.f;
+
+	for (Nz::BaseWidget* widget : widgets) {
+		widget->Resize({maxWidth, widget->GetHeight()});
+		widget->SetPosition({0.f, cursor.y - widget->GetSize().y, 0.f});
+		widget->CenterHorizontal();
+		cursor.y -= widget->GetSize().y + padding;
+	}
+}
+
+void CreateServerState::OnCreateServerPressed() {
+	std::string serverPort = m_InputPort->GetText();
+	if (serverPort.empty()) {
+		// UpdateStatus("Error: blank server port", Nz::Color::Red());
+		return;
+	}
+
+	long long rawPort = std::stoi(serverPort);
+	if (rawPort <= 0 || rawPort > 0xFFFF) {
+		// UpdateStatus("Error: " + serverPort + " is not a valid port", Nz::Color::Red());
+		return;
+	}
+
+	Nz::IpAddress address = Nz::IpAddress::LoopbackIpV4;
+	address.SetPort(rawPort);
+
+	m_NextState = std::make_shared<ConnectingState>(GetStateDataPtr(), shared_from_this(), "localhost", rawPort, true);
+}
+
+void CreateServerState::OnBackPressed() {
+	m_NextState = std::move(m_PreviousState);
+}
+
+
+}  // namespace client
+}  // namespace blitz

src/client/states/GameState.cpp

@@ -0,0 +1,16 @@
+#include <client/states/GameState.h>
+
+#include <client/Client.h>
+#include <server/Server.h>
+
+namespace blitz {
+namespace client {
+
+GameState::GameState(
+	std::shared_ptr<StateData> a_StateData, std::unique_ptr<Client>&& a_Client, std::unique_ptr<server::Server>&& a_Server) :
+	AbstractState(a_StateData), m_Client(std::move(a_Client)), m_Server(std::move(a_Server)) {}
+
+GameState::~GameState() {}
+
+}  // namespace client
+}  // namespace blitz

src/client/states/ImGuiDrawer.cpp

@@ -0,0 +1,17 @@
+#include <client/states/ImGuiDrawer.h>
+
+#include <NazaraImgui/NazaraImgui.hpp>
+
+namespace blitz {
+namespace client {
+
+ImGuiDrawer::ImGuiDrawer() {
+	Nz::Imgui::Instance()->AddHandler(this);
+}
+
+ImGuiDrawer::~ImGuiDrawer() {
+	Nz::Imgui::Instance()->RemoveHandler(this);
+}
+
+}  // namespace client
+}  // namespace blitz

src/client/states/JoinServerState.cpp

@@ -0,0 +1,97 @@
+#include <Nazara/Network/Enums.hpp>
+#include <Nazara/Network/IpAddress.hpp>
+#include <client/states/ConnectingState.h>
+#include <client/states/JoinServerState.h>
+
+#include <Nazara/Core/StateMachine.hpp>
+#include <Nazara/TextRenderer.hpp>
+
+namespace blitz {
+namespace client {
+
+JoinServerState::JoinServerState(std::shared_ptr<StateData> a_StateData, std::shared_ptr<AbstractState> a_PreviousState) :
+	AbstractState(std::move(a_StateData)), m_PreviousState(std::move(a_PreviousState)) {
+	Nz::SimpleTextDrawer textDrawer;
+	textDrawer.SetTextColor({0.0, 0.0, 0.0, 1.0});
+	textDrawer.SetCharacterSize(75);
+
+	m_InputAddress = CreateWidget<Nz::TextAreaWidget>();
+	m_InputAddress->SetBackgroundColor(Nz::Color::White());
+	m_InputAddress->EnableBackground(true);
+	m_InputAddress->EnableMultiline(false);
+	m_InputAddress->SetTextColor(Nz::Color::Black());
+	m_InputAddress->SetText("localhost");
+
+	m_JoinServerButton = CreateWidget<Nz::ButtonWidget>();
+	textDrawer.SetText("Join Server");
+	m_JoinServerButton->UpdateText(textDrawer);
+	m_JoinServerButton->Resize(m_JoinServerButton->GetPreferredSize());
+	m_JoinServerButton->OnButtonTrigger.Connect([this](const Nz::ButtonWidget*) { OnJoinServerPressed(); });
+
+	m_BackButton = CreateWidget<Nz::ButtonWidget>();
+	textDrawer.SetText("Back");
+	m_BackButton->UpdateText(textDrawer);
+	m_BackButton->Resize(m_BackButton->GetPreferredSize());
+	m_BackButton->OnButtonTrigger.Connect([this](const Nz::ButtonWidget*) { OnBackPressed(); });
+}
+
+JoinServerState::~JoinServerState() {}
+
+bool JoinServerState::Update(Nz::StateMachine& fsm, Nz::Time /*elapsedTime*/) {
+	if (m_NextState)
+		fsm.ChangeState(std::move(m_NextState));
+
+	return true;
+}
+
+void JoinServerState::LayoutWidgets() {
+	Nz::Vector2f canvasSize = GetStateData().m_Canvas->GetSize();
+	Nz::Vector2f center = canvasSize / 2.f;
+
+	constexpr float padding = 10.f;
+
+	std::array<Nz::BaseWidget*, 3> widgets = {m_InputAddress, m_JoinServerButton, m_BackButton};
+
+	float maxWidth = 0.f;
+	float totalSize = padding * (widgets.size() - 1);
+	for (Nz::BaseWidget* widget : widgets) {
+		Nz::Vector2f size = widget->GetSize();
+
+		maxWidth = std::max(maxWidth, size.x);
+		totalSize += size.y;
+	}
+
+	Nz::Vector2f cursor = center;
+	cursor.y += totalSize / 2.f;
+
+	for (Nz::BaseWidget* widget : widgets) {
+		widget->Resize({maxWidth, widget->GetHeight()});
+		widget->SetPosition({0.f, cursor.y - widget->GetSize().y, 0.f});
+		widget->CenterHorizontal();
+		cursor.y -= widget->GetSize().y + padding;
+	}
+}
+
+void JoinServerState::OnJoinServerPressed() {
+	std::string address = m_InputAddress->GetText();
+	auto separator = address.find(':');
+	std::string name = address.substr(0, separator);
+	std::uint16_t port = 25565;
+	if (separator != std::string::npos) {
+		try {
+			std::string rawPort = address.substr(separator + 1, std::string::npos);
+			port = std::stoi(rawPort);
+		} catch (std::exception& e) {
+			return;
+		}
+	}
+	m_NextState = std::make_shared<ConnectingState>(GetStateDataPtr(), shared_from_this(), name, port, false);
+}
+
+void JoinServerState::OnBackPressed() {
+	m_NextState = std::move(m_PreviousState);
+}
+
+
+}  // namespace client
+}  // namespace blitz

src/client/states/MainMenuState.cpp

@@ -0,0 +1,108 @@
+#include <client/states/MainMenuState.h>
+
+#include <Nazara/Core/ApplicationBase.hpp>
+#include <Nazara/Core/StateMachine.hpp>
+#include <Nazara/TextRenderer.hpp>
+#include <NazaraImgui/ImguiHandler.hpp>
+#include <NazaraImgui/NazaraImgui.hpp>
+#include <client/states/CreateServerState.h>
+#include <client/states/JoinServerState.h>
+#include <client/states/OptionState.h>
+
+namespace blitz {
+namespace client {
+
+MainMenuState::MainMenuState(std::shared_ptr<StateData> a_StateData) : AbstractState(std::move(a_StateData)) {
+	Nz::SimpleTextDrawer textDrawer;
+	textDrawer.SetTextColor({0.0, 0.0, 0.0, 1.0});
+	textDrawer.SetCharacterSize(75);
+
+	m_JoinServerButton = CreateWidget<Nz::ButtonWidget>();
+	textDrawer.SetText("Join Server");
+	m_JoinServerButton->UpdateText(textDrawer);
+	m_JoinServerButton->Resize(m_JoinServerButton->GetPreferredSize());
+	m_JoinServerButton->OnButtonTrigger.Connect([this](const Nz::ButtonWidget*) { OnJoinServerPressed(); });
+
+	m_CreateServerButton = CreateWidget<Nz::ButtonWidget>();
+	textDrawer.SetText("Create Server");
+	m_CreateServerButton->UpdateText(textDrawer);
+	m_CreateServerButton->Resize(m_CreateServerButton->GetPreferredSize());
+	m_CreateServerButton->OnButtonTrigger.Connect([this](const Nz::ButtonWidget*) { OnCreateServerPressed(); });
+
+	m_OptionButton = CreateWidget<Nz::ButtonWidget>();
+	textDrawer.SetText("Settings");
+	m_OptionButton->UpdateText(textDrawer);
+	m_OptionButton->Resize(m_OptionButton->GetPreferredSize());
+	m_OptionButton->OnButtonTrigger.Connect([this](const Nz::ButtonWidget*) { OnOptionPressed(); });
+
+	m_QuitButton = CreateWidget<Nz::ButtonWidget>();
+	textDrawer.SetText("Quit game");
+	m_QuitButton->UpdateText(textDrawer);
+	m_QuitButton->Resize(m_QuitButton->GetPreferredSize());
+	m_QuitButton->OnButtonTrigger.Connect([this](const Nz::ButtonWidget*) { OnQuitPressed(); });
+}
+
+MainMenuState::~MainMenuState() {}
+
+bool MainMenuState::Update(Nz::StateMachine& fsm, Nz::Time elapsedTime) {
+	if (!AbstractState::Update(fsm, elapsedTime))
+		return false;
+
+	if (m_NextState)
+		fsm.ChangeState(std::move(m_NextState));
+
+	return true;
+}
+
+void MainMenuState::LayoutWidgets() {
+	Nz::Vector2f canvasSize = GetStateData().m_Canvas->GetSize();
+	Nz::Vector2f center = canvasSize / 2.f;
+
+	constexpr float padding = 10.f;
+
+	std::array<Nz::BaseWidget*, 4> widgets = {m_JoinServerButton, m_CreateServerButton, m_OptionButton, m_QuitButton};
+
+	float maxWidth = 0.f;
+	float totalSize = padding * (widgets.size() - 1);
+	for (Nz::BaseWidget* widget : widgets) {
+		Nz::Vector2f size = widget->GetSize();
+
+		maxWidth = std::max(maxWidth, size.x);
+		totalSize += size.y;
+	}
+
+	Nz::Vector2f cursor = center;
+	cursor.y += totalSize / 2.f;
+
+	for (Nz::BaseWidget* widget : widgets) {
+		widget->Resize({maxWidth, widget->GetHeight()});
+		widget->SetPosition({0.f, cursor.y - widget->GetSize().y, 0.f});
+		widget->CenterHorizontal();
+		cursor.y -= widget->GetSize().y + padding;
+	}
+}
+
+void MainMenuState::OnRenderImgui() {
+#ifndef NDEBUG
+	ImGui::ShowDemoWindow(nullptr);
+#endif
+}
+
+void MainMenuState::OnJoinServerPressed() {
+	m_NextState = std::make_shared<JoinServerState>(GetStateDataPtr(), shared_from_this());
+}
+
+void MainMenuState::OnCreateServerPressed() {
+	m_NextState = std::make_shared<CreateServerState>(GetStateDataPtr(), shared_from_this());
+}
+
+void MainMenuState::OnOptionPressed() {
+	m_NextState = std::make_shared<OptionState>(GetStateDataPtr(), shared_from_this());
+}
+
+void MainMenuState::OnQuitPressed() {
+	GetStateData().m_App->Quit();
+}
+
+}  // namespace client
+}  // namespace blitz

src/client/states/OptionState.cpp

@@ -0,0 +1,73 @@
+#include <client/states/OptionState.h>
+
+#include <Nazara/Core/StateMachine.hpp>
+#include <Nazara/TextRenderer.hpp>
+
+namespace blitz {
+namespace client {
+
+OptionState::OptionState(std::shared_ptr<StateData> a_StateData, std::shared_ptr<AbstractState> a_PreviousState) :
+	AbstractState(std::move(a_StateData)), m_PreviousState(std::move(a_PreviousState)) {
+	Nz::SimpleTextDrawer textDrawer;
+	textDrawer.SetTextColor({0.0, 0.0, 0.0, 1.0});
+	textDrawer.SetCharacterSize(75);
+
+	m_OptionButton = CreateWidget<Nz::ButtonWidget>();
+	textDrawer.SetText("Settings");
+	m_OptionButton->UpdateText(textDrawer);
+	m_OptionButton->Resize(m_OptionButton->GetPreferredSize());
+	m_OptionButton->OnButtonTrigger.Connect([this](const Nz::ButtonWidget*) { OnOptionPressed(); });
+
+	m_BackButton = CreateWidget<Nz::ButtonWidget>();
+	textDrawer.SetText("Back");
+	m_BackButton->UpdateText(textDrawer);
+	m_BackButton->Resize(m_BackButton->GetPreferredSize());
+	m_BackButton->OnButtonTrigger.Connect([this](const Nz::ButtonWidget*) { OnBackPressed(); });
+}
+
+OptionState::~OptionState() {}
+
+void OptionState::LayoutWidgets() {
+	Nz::Vector2f canvasSize = GetStateData().m_Canvas->GetSize();
+	Nz::Vector2f center = canvasSize / 2.f;
+
+	constexpr float padding = 10.f;
+
+	std::array<Nz::BaseWidget*, 2> widgets = {m_OptionButton, m_BackButton};
+
+	float maxWidth = 0.f;
+	float totalSize = padding * (widgets.size() - 1);
+	for (Nz::BaseWidget* widget : widgets) {
+		Nz::Vector2f size = widget->GetSize();
+
+		maxWidth = std::max(maxWidth, size.x);
+		totalSize += size.y;
+	}
+
+	Nz::Vector2f cursor = center;
+	cursor.y += totalSize / 2.f;
+
+	for (Nz::BaseWidget* widget : widgets) {
+		widget->Resize({maxWidth, widget->GetHeight()});
+		widget->SetPosition({0.f, cursor.y - widget->GetSize().y, 0.f});
+		widget->CenterHorizontal();
+		cursor.y -= widget->GetSize().y + padding;
+	}
+}
+
+bool OptionState::Update(Nz::StateMachine& fsm, Nz::Time /*elapsedTime*/) {
+	if (m_NextState)
+		fsm.ChangeState(std::move(m_NextState));
+
+	return true;
+}
+
+void OptionState::OnOptionPressed() {}
+
+void OptionState::OnBackPressed() {
+	m_NextState = std::move(m_PreviousState);
+}
+
+
+}  // namespace client
+}  // namespace blitz

src/main.cpp

@@ -1,260 +0,0 @@
-#include <iostream>
-
-#include <Nazara/Core.hpp>
-#include <Nazara/Graphics.hpp>
-#include <Nazara/Renderer.hpp>
-#include <Nazara/Platform.hpp>
-#include <Nazara/Physics3D.hpp>
-#include <random>
-
-static Nz::Vector3f Get2DDirectionVectorFromRotation(float yaw) {
-	return {
-		-std::sin(yaw),
-		0,
-		-std::cos(yaw),
-	};
-}
-
-static void CreateLight(Nz::EnttWorld &world)
-{
-	entt::handle lightEntity = world.CreateEntity();
-	{
-		auto &lightNode = lightEntity.emplace<Nz::NodeComponent>();
-		lightNode.SetPosition({0, 5, 0});
-
-		auto &entityLight = lightEntity.emplace<Nz::LightComponent>();
-		auto &spotLight = entityLight.AddLight<Nz::PointLight>(1);
-		spotLight.EnableShadowCasting(true);
-		spotLight.UpdateShadowMapSize(1024);
-		spotLight.UpdateRadius(10.0f);
-		spotLight.UpdateDiffuseFactor(0.5f);
-	}
-}
-
-static void CreateBoxes(Nz::EnttWorld &world)
-{
-	constexpr float BoxDims = 1.f;
-
-	std::mt19937 rd(42);
-	std::uniform_real_distribution<float> colorDis(0.f, 360.f);
-	std::uniform_real_distribution<float> radiusDis(0.1f, 0.5f);
-
-	std::uniform_real_distribution<float> lengthDis(0.2f, 1.5f);
-	std::shared_ptr<Nz::GraphicalMesh> boxMesh = Nz::GraphicalMesh::Build(Nz::Primitive::Box(Nz::Vector3f(1.f)));
-
-	constexpr std::size_t BoxCount = 100;
-	for (std::size_t i = 0; i < BoxCount; ++i)
-	{
-		float width = lengthDis(rd);
-		float height = lengthDis(rd);
-		float depth = lengthDis(rd);
-
-		std::uniform_real_distribution<float> xRandom(-BoxDims * 0.5f + width, BoxDims * 0.5f - width);
-		std::uniform_real_distribution<float> yRandom(-BoxDims * 0.5f + height, BoxDims * 0.5f - height);
-		std::uniform_real_distribution<float> zRandom(-BoxDims * 0.5f + depth, BoxDims * 0.5f - depth);
-
-		entt::handle boxEntity = world.CreateEntity();
-
-		std::shared_ptr<Nz::MaterialInstance> boxMaterial = Nz::MaterialInstance::Instantiate(Nz::MaterialType::Phong);
-		boxMaterial->SetValueProperty("BaseColor", Nz::Color::sRGBToLinear(Nz::Color::FromHSV(colorDis(rd), 1.f, 1.f)));
-
-		std::shared_ptr<Nz::Model> sphereModel = std::make_shared<Nz::Model>(boxMesh);
-		sphereModel->SetMaterial(0, std::move(boxMaterial));
-
-		boxEntity.emplace<Nz::GraphicsComponent>(std::move(sphereModel));
-
-		auto &ballNode = boxEntity.emplace<Nz::NodeComponent>();
-		ballNode.SetPosition({xRandom(rd), yRandom(rd) + 20.0f, zRandom(rd)});
-		ballNode.SetScale({width, height, depth});
-
-		std::shared_ptr<Nz::BoxCollider3D> boxCollider = std::make_shared<Nz::BoxCollider3D>(Nz::Vector3f(width, height, depth));
-
-		Nz::RigidBody3D::DynamicSettings settings;
-		settings.geom = boxCollider;
-		settings.mass = width * height * depth;
-
-		boxEntity.emplace<Nz::RigidBody3DComponent>(settings);
-	}
-}
-
-static void CreateModel(Nz::EnttWorld &world)
-{
-	std::filesystem::path resourceDir = "assets/models";
-
-	Nz::MeshParams meshParams;
-	meshParams.center = true;
-	meshParams.vertexRotation = Nz::EulerAnglesf(0.f, 0.f, 0.f);
-	meshParams.vertexScale = Nz::Vector3f(1.0f);
-	meshParams.vertexDeclaration = Nz::VertexDeclaration::Get(Nz::VertexLayout::XYZ_Normal_UV_Tangent);
-
-	std::shared_ptr<Nz::Mesh> deambuMesh = Nz::Mesh::LoadFromFile(resourceDir / "sol.obj", meshParams);
-	if (!deambuMesh)
-	{
-		NazaraError("failed to load model");
-		return;
-	}
-
-	std::shared_ptr<Nz::GraphicalMesh> gfxMesh = Nz::GraphicalMesh::BuildFromMesh(*deambuMesh);
-	std::shared_ptr<Nz::Model> deambModel = std::make_shared<Nz::Model>(std::move(gfxMesh));
-
-	entt::handle deambEntity = world.CreateEntity();
-	{
-		auto &entityGfx = deambEntity.emplace<Nz::GraphicsComponent>();
-		entityGfx.AttachRenderable(deambModel);
-
-		auto &entityNode = deambEntity.emplace<Nz::NodeComponent>();
-		entityNode.SetPosition(Nz::Vector3f(0.f, 0.f, 0.f));
-	}
-
-	std::shared_ptr<Nz::RenderDevice> device = Nz::Graphics::Instance()->GetRenderDevice();
-
-	std::shared_ptr<Nz::MaterialInstance> material = Nz::MaterialInstance::Instantiate(Nz::MaterialType::Phong);
-	for (std::string_view passName : {"DepthPass", "ForwardPass"})
-	{
-		material->UpdatePassStates(passName, [](Nz::RenderStates &states)
-								   {
-			states.depthClamp = true;
-			return true; });
-	}
-
-	std::mt19937 rd(42);
-	std::uniform_real_distribution<float> colorDis(0.f, 360.f);
-	material->SetValueProperty("BaseColor", Nz::Color::sRGBToLinear(Nz::Color::FromHSV(colorDis(rd), 1.f, 1.f)));
-
-	for (std::size_t i = 0; i < deambModel->GetSubMeshCount(); ++i)
-		deambModel->SetMaterial(i, material);
-
-	Nz::VertexMapper vertexMapper(*deambuMesh->GetSubMesh(0));
-	Nz::SparsePtr<Nz::Vector3f> vertices = vertexMapper.GetComponentPtr<Nz::Vector3f>(Nz::VertexComponent::Position);
-
-	auto shipCollider = std::make_shared<Nz::ConvexHullCollider3D>(vertices, vertexMapper.GetVertexCount(), 0.1f);
-
-	Nz::RigidBody3D::StaticSettings settings;
-	settings.geom = shipCollider;
-
-	deambEntity.emplace<Nz::RigidBody3DComponent>(settings);
-}
-
-static Nz::EulerAnglesf camAngles(0.f, 0.f, 0.f);
-
-static void CreateCamera(Nz::EnttWorld &world, Nz::Window &window, Nz::Application<Nz::Graphics, Nz::Physics3D> &app)
-{
-	Nz::RenderSystem &renderSystem = world.AddSystem<Nz::RenderSystem>();
-
-	Nz::SwapchainParameters params;
-	params.presentMode.clear();
-	params.presentMode.push_back(Nz::PresentMode::VerticalSync);
-
-	Nz::WindowSwapchain &windowSwapchain = renderSystem.CreateSwapchain(window, params);
-
-	// Création de la caméra
-	entt::handle cameraEntity = world.CreateEntity();
-
-	auto &cameraNode = cameraEntity.emplace<Nz::NodeComponent>();
-	cameraNode.SetPosition({0, 1, 0});
-
-	auto &cameraComponent = cameraEntity.emplace<Nz::CameraComponent>(std::make_shared<Nz::RenderWindow>(windowSwapchain), Nz::ProjectionType::Perspective);
-	cameraComponent.UpdateClearColor(Nz::Color(0.3f, 0.8f, 1.0f));
-	cameraComponent.UpdateZNear(0.1f);
-	cameraComponent.UpdateZFar(100.0f);
-
-	entt::handle playerEntity = world.CreateEntity();
-
-	auto &playerNode = playerEntity.emplace<Nz::NodeComponent>();
-	playerNode.SetPosition({0, 5, 0});
-	cameraNode.SetParent(playerEntity);
-
-	window.GetEventHandler().OnMouseMoved.Connect([&](const Nz::WindowEventHandler * /*eventHandler*/, const Nz::WindowEvent::MouseMoveEvent &event)
-												  {
-        constexpr float sensitivity = 0.3f;
-
-        camAngles.yaw -= event.deltaX * sensitivity;
-        camAngles.yaw.Normalize();
-
-        camAngles.pitch = Nz::Clamp(camAngles.pitch - event.deltaY * sensitivity, -89.f, 89.f);
-
-        camAngles.roll = 0.0f;
-
-        cameraNode.SetRotation(camAngles); 
-		
-		});
-
-	std::shared_ptr<Nz::BoxCollider3D> boxCollider = std::make_shared<Nz::BoxCollider3D>(Nz::Vector3f(1, 2, 1));
-
-	
-
-	static const int playerMass = 100000;
-
-	Nz::RigidBody3D::DynamicSettings settings;
-	settings.geom = boxCollider;
-	settings.mass = playerMass;
-	auto &playerBody = playerEntity.emplace<Nz::RigidBody3DComponent>(settings);
-
-	app.AddUpdaterFunc([&](){
-		static Nz::MillisecondClock updateClock;
-		if (std::optional<Nz::Time> deltaTime = updateClock.RestartIfOver(Nz::Time::TickDuration(60)))
-		{
-			camAngles.roll = 0;
-			cameraNode.SetRotation(camAngles);
-
-			Nz::Vector3f front = Get2DDirectionVectorFromRotation(camAngles.yaw.ToRadians());
-			Nz::Vector3f left = Get2DDirectionVectorFromRotation(camAngles.yaw.ToRadians() + 3.1415926535/2.0);
-				
-			if (Nz::Keyboard::IsKeyPressed(Nz::Keyboard::VKey::Z))
-				playerBody.AddForce(front * 10.f * playerMass, Nz::CoordSys::Local);
-
-			if (Nz::Keyboard::IsKeyPressed(Nz::Keyboard::VKey::S))
-				playerBody.AddForce(-front * 10.f * playerMass, Nz::CoordSys::Local);
-
-			if (Nz::Keyboard::IsKeyPressed(Nz::Keyboard::VKey::Q))
-				playerBody.AddForce(left * 10.f * playerMass, Nz::CoordSys::Local);
-
-			if (Nz::Keyboard::IsKeyPressed(Nz::Keyboard::VKey::D))
-				playerBody.AddForce(-left * 10.f * playerMass, Nz::CoordSys::Local);
-
-			if (Nz::Keyboard::IsKeyPressed(Nz::Keyboard::VKey::Space))
-				playerBody.AddForce(Nz::Vector3f::Up() * 15.f * playerMass, Nz::CoordSys::Local); 
-		}
-		});
-}
-
-int main(int argc, char **argv)
-{
-	Nz::Application<Nz::Graphics, Nz::Physics3D> app(argc, argv);
-
-	auto &windowing = app.AddComponent<Nz::WindowingAppComponent>();
-
-	std::string windowTitle = "Blitz 2";
-	Nz::Window &window = windowing.CreateWindow(Nz::VideoMode(1920, 1080, 32), windowTitle);
-
-	auto &ecs = app.AddComponent<Nz::EntitySystemAppComponent>();
-
-	auto &world = ecs.AddWorld<Nz::EnttWorld>();
-
-	auto &physSystem = world.AddSystem<Nz::Physics3DSystem>();
-	physSystem.GetPhysWorld().SetMaxStepCount(1);
-	physSystem.GetPhysWorld().SetStepSize(Nz::Time::TickDuration(50));
-	physSystem.GetPhysWorld().SetGravity(Nz::Vector3f::Down() * 9.81f);
-
-	CreateCamera(world, window, app);
-	CreateBoxes(world);
-	CreateModel(world);
-	CreateLight(world);
-
-	Nz::Mouse::SetRelativeMouseMode(true);
-
-	Nz::MillisecondClock fpsClock;
-	unsigned int fps = 0;
-
-	app.AddUpdaterFunc([&]()
-					   {
-        fps++;
-
-		if (fpsClock.RestartIfOver(Nz::Time::Second()))
-		{
-			window.SetTitle(windowTitle + " - " + Nz::NumberToString(fps) + " FPS" + " - " + Nz::NumberToString(world.GetAliveEntityCount()) + " entities");
-			fps = 0;
-		} });
-
-	return app.Run();
-}

src/server/Server.cpp

@@ -0,0 +1,94 @@
+#include <server/Server.h>
+
+#include <server/components/EnetConnection.h>
+#include <server/components/ServerIdCounter.h>
+
+#include <server/handlers/KeepAliveHandler.h>
+#include <server/handlers/PlayerLoginHandler.h>
+
+#include <blitz/systems/RemovePlayersSystem.h>
+#include <server/systems/DisconnectSystem.h>
+#include <server/systems/KeepAliveSystem.h>
+
+namespace blitz {
+namespace server {
+
+Server::Server(std::uint16_t a_Port, Nz::EnttWorld& a_World) : m_World({a_World}), m_NetworkServer(a_Port) {
+	RegisterSystems();
+	m_NetworkServer.OnClientConnect.Connect(this, &Server::HandleConnect);
+	m_NetworkServer.OnClientDisconnect.Connect(this, &Server::HandleDisconnect);
+	m_NetworkServer.OnClientDisconnectTimeout.Connect(this, &Server::HandleDisconnect);
+}
+
+Server::~Server() {
+	CloseServer();
+
+	AtomicEnttWorld world = m_World;
+	world->RemoveSystem<KeepAliveSystem>();
+	world->RemoveSystem<DisconnectSystem>();
+	world->RemoveSystem<RemovePlayersSystem>();
+}
+
+void Server::HandleConnect(network::EnetConnection& a_Connection) {
+	Session newSession;
+	newSession.m_Connection = &a_Connection;
+
+	RegisterHandlers(newSession);
+
+	m_Sessions.insert({a_Connection.GetPeerId(), std::move(newSession)});
+
+	CreateEntity(a_Connection);
+}
+
+void Server::HandleDisconnect(network::EnetConnection& a_Connection) {
+	m_Sessions.erase(a_Connection.GetPeerId());
+}
+
+void Server::CreateEntity(network::EnetConnection& a_Connection) {
+	AtomicEnttWorld world = m_World;
+
+	auto entity = world->CreateEntity();
+
+	entity.emplace<EnetConnectionComponent>(&a_Connection);
+}
+
+void Server::RegisterSystems() {
+	AtomicEnttWorld world = m_World;
+	world->AddSystem<KeepAliveSystem>(m_World);
+	world->AddSystem<DisconnectSystem>(m_World, *this);
+	world->AddSystem<RemovePlayersSystem>(m_World);
+
+	auto counter = world->CreateEntity();
+	counter.emplace<ServerIdCounterComponent>(0);
+}
+
+void Server::RegisterHandlers(Session& session) {
+	session.m_Handlers.push_back(std::make_unique<KeepAliveHandler>(*session.m_Connection, m_World));
+	session.m_Handlers.push_back(std::make_unique<PlayerLoginHandler>(*session.m_Connection, m_World));
+}
+
+network::EnetConnection* Server::GetConnection(std::uint16_t a_PeerId) {
+	auto it = m_Sessions.find(a_PeerId);
+
+	if (it == m_Sessions.end())
+		return nullptr;
+
+	return it->second.m_Connection;
+}
+
+void Server::CloseConnection(std::uint16_t a_PeerId) {
+	m_NetworkServer.CloseConnection(a_PeerId);
+}
+
+void Server::CloseServer() {
+	for (auto& [peerId, session] : m_Sessions) {
+		CloseConnection(peerId);
+	}
+}
+
+bool Server::IsClosed() const {
+	return m_NetworkServer.IsClosed();
+}
+
+}  // namespace server
+}  // namespace blitz

src/server/handlers/KeepAliveHandler.cpp

@@ -0,0 +1,29 @@
+#include <server/handlers/KeepAliveHandler.h>
+
+#include <server/components/KeepAliveSession.h>
+
+#include <Nazara/Core/Time.hpp>
+
+namespace blitz {
+namespace server {
+
+KeepAliveHandler::KeepAliveHandler(network::EnetConnection& a_Connection, EnttWorld& a_World) :
+	protocol::PacketHandler(a_Connection, a_World) {
+	m_Slot.Connect(a_Connection.OnKeepAlive,
+		[this](const protocol::data::KeepAlive& a_KeepAlive) { Handle(m_Connection.GetPeerId(), a_KeepAlive); });
+}
+
+KeepAliveHandler::~KeepAliveHandler() {}
+
+void KeepAliveHandler::Handle(std::uint16_t a_PeerId, const protocol::data::KeepAlive& a_KeepAlive) {
+	AtomicEnttWorld world = m_World;
+	world->GetRegistry().view<KeepAliveSessionComponent>().each([a_PeerId, &a_KeepAlive](auto& keepAliveSession) {
+		if (keepAliveSession.m_PeerId == a_PeerId && keepAliveSession.m_LastKeepAliveId == a_KeepAlive.m_KeepAliveId) {
+			keepAliveSession.m_LastTime = Nz::GetElapsedMilliseconds();
+			keepAliveSession.m_RecievedResponse = true;
+		}
+	});
+}
+
+}  // namespace server
+}  // namespace blitz

src/server/handlers/PlayerLoginHandler.cpp

@@ -0,0 +1,72 @@
+#include <server/handlers/PlayerLoginHandler.h>
+
+#include <Nazara/Core/Time.hpp>
+#include <blitz/common/Format.h>
+#include <blitz/common/Log.h>
+#include <blitz/components/PlayerInfo.h>
+#include <server/components/EnetConnection.h>
+#include <server/components/KeepAliveSession.h>
+#include <server/components/ServerIdCounter.h>
+
+namespace blitz {
+namespace server {
+
+PlayerLoginHandler::PlayerLoginHandler(network::EnetConnection& a_Connection, EnttWorld& a_World) :
+	protocol::PacketHandler(a_Connection, a_World) {
+	m_Slot.Connect(a_Connection.OnPlayerLogin,
+		[this](const protocol::data::PlayerLogin& a_PlayerLogin) { Handle(m_Connection.GetPeerId(), a_PlayerLogin); });
+}
+
+PlayerLoginHandler::~PlayerLoginHandler() {}
+
+void PlayerLoginHandler::Handle(std::uint16_t a_PeerId, const protocol::data::PlayerLogin& a_PlayerLogin) {
+	AtomicEnttWorld world = m_World;
+
+	std::vector<PlayerInfoComponent> players;
+
+	for (auto [entity, playerInfo] : world->GetRegistry().view<PlayerInfoComponent>().each()) {
+		players.push_back(playerInfo);
+	}
+
+	assert(world->GetRegistry().view<ServerIdCounterComponent>().size() == 1 && "There should be only one counter !");
+
+	auto& serverCounter =
+		world->GetRegistry().get<ServerIdCounterComponent>(world->GetRegistry().view<ServerIdCounterComponent>().front());
+
+	EntityID newEntityId = serverCounter.m_NextEntityId++;
+
+	PlayerInfoComponent newPlayer;
+
+	for (auto [entity, connection] : world->GetRegistry().view<EnetConnectionComponent>().each()) {
+		if (connection.m_Connection->GetPeerId() == m_Connection.GetPeerId()) {
+			// players should not try to log in twice
+			auto previousPlayerInfo = world->GetRegistry().try_get<PlayerInfoComponent>(entity);
+			if (previousPlayerInfo)
+				return;
+
+			newPlayer = world->GetRegistry().emplace<PlayerInfoComponent>(entity, newEntityId, a_PlayerLogin.m_PlayerName);
+
+			world->GetRegistry().emplace<KeepAliveSessionComponent>(
+				entity, m_Connection.GetPeerId(), 69, Nz::GetElapsedMilliseconds(), true);
+
+			break;
+		}
+	}
+
+	// send logging success
+	m_Connection.SendLoggingSuccess({newEntityId});
+
+	// send player list
+	if (!players.empty())
+		m_Connection.SendPlayerList({players});
+
+	// broadcast player join
+	for (auto [entity, connection] : world->GetRegistry().view<EnetConnectionComponent>().each()) {
+		connection.m_Connection->SendPlayerJoin({newPlayer});
+	}
+
+	LogD(Format("[Server] %s joined !", a_PlayerLogin.m_PlayerName.c_str()));
+}
+
+}  // namespace server
+}  // namespace blitz

src/server/systems/DisconnectSystem.cpp

@@ -0,0 +1,48 @@
+#include <server/systems/DisconnectSystem.h>
+
+#include <server/components/Disconnect.h>
+#include <server/components/EnetConnection.h>
+#include <blitz/components/PlayerRemove.h>
+
+#include <server/Server.h>
+
+#include <blitz/common/Format.h>
+#include <blitz/common/Log.h>
+
+namespace blitz {
+namespace server {
+
+DisconnectSystem::DisconnectSystem(entt::registry&, EnttWorld& a_World, Server& a_Server) : m_World(a_World), m_Server(a_Server) {}
+
+void DisconnectSystem::Update(Nz::Time elapsedTime) {
+	AtomicEnttWorld world = m_World;
+
+	entt::registry& registry = world->GetRegistry();
+
+	auto disconnects = registry.view<DisconnectComponent>();
+
+	// broadcast player leave
+	for (auto entity : disconnects) {
+		auto* player = registry.try_get<PlayerInfoComponent>(entity);
+		if (player) {
+			for (auto [entity, connection] : registry.view<EnetConnectionComponent>().each()) {
+				connection.m_Connection->SendPlayerLeave({player->m_PlayerId});
+			}
+			LogD(Format("[Server] %s left !", player->m_Pseudo.c_str()));
+		}
+	}
+
+	// close connections
+	registry.view<EnetConnectionComponent, DisconnectComponent>().each(
+		[this](auto entity, EnetConnectionComponent& connection, DisconnectComponent disconnect) {
+			m_Server.CloseConnection(connection.m_Connection->GetPeerId());
+		});
+
+	// remove the entities
+	for (auto entity : disconnects) {
+		registry.emplace<PlayerRemoveComponent>(entity);
+	}
+}
+
+}  // namespace server
+}  // namespace blitz

src/server/systems/KeepAliveSystem.cpp

@@ -0,0 +1,42 @@
+#include <server/systems/KeepAliveSystem.h>
+
+#include <server/components/Disconnect.h>
+#include <server/components/EnetConnection.h>
+#include <server/components/KeepAliveSession.h>
+
+#include <random>
+
+namespace blitz {
+namespace server {
+
+KeepAliveSystem::KeepAliveSystem(entt::registry&, EnttWorld& a_World) : m_World(a_World) {}
+
+void KeepAliveSystem::Update(Nz::Time elapsedTime) {
+	AtomicEnttWorld world = m_World;
+
+	entt::registry& registry = world->GetRegistry();
+
+	registry.view<KeepAliveSessionComponent, EnetConnectionComponent>().each(
+		[&registry](auto entity, auto& keepAliveSession, auto& connection) {
+			auto duration = Nz::GetElapsedMilliseconds() - keepAliveSession.m_LastTime;
+			if (duration > Nz::Time::Seconds(10)) {
+				if (keepAliveSession.m_RecievedResponse) {
+					keepAliveSession.m_RecievedResponse = false;
+					keepAliveSession.m_LastTime = Nz::GetElapsedMilliseconds();
+
+					std::random_device rd;
+					std::uniform_int_distribution<std::uint64_t> dis(0, std::numeric_limits<std::uint64_t>::max());
+					std::uint64_t keepAliveId = dis(rd);
+
+					keepAliveSession.m_LastKeepAliveId = keepAliveId;
+					connection.m_Connection->SendKeepAlive({keepAliveId});
+				} else {
+					// We kick the player because he's not responding anymore
+					registry.emplace<DisconnectComponent>(entity);
+				}
+			}
+		});
+}
+
+}  // namespace server
+}  // namespace blitz

test/blitz/network/Enet_test.cpp

@@ -0,0 +1,47 @@
+#include <blitz/network/EnetClient.h>
+#include <blitz/network/EnetServer.h>
+#include <blitz/utils/Test.h>
+
+using namespace std::chrono_literals;
+
+int main() {
+	static constexpr std::uint16_t port = 25565;
+
+	int serverSendCount = 0;
+	int clientSendCount = 0;
+
+	blitz::network::EnetServer server(port);
+	blitz::network::EnetClient client(Nz::IpAddress{"127.0.0.1:" + std::to_string(port)});
+	blitz::network::EnetClient client1(Nz::IpAddress{"127.0.0.1:" + std::to_string(port)});
+	blitz::network::EnetClient client2(Nz::IpAddress{"127.0.0.1:" + std::to_string(port)});
+	blitz::network::EnetClient client3(Nz::IpAddress{"127.0.0.1:" + std::to_string(port)});
+	blitz::network::EnetClient client4(Nz::IpAddress{"127.0.0.1:" + std::to_string(port)});
+
+	std::this_thread::sleep_for(1s);
+
+	blitz_test_assert(client.GetConnection().IsConnected());
+
+	for (int i = 0; i < 5; i++) {
+		blitz_test_assert(server.GetConnection(i));
+	}
+
+	server.GetConnection(0)->OnKeepAlive.Connect([&server, &serverSendCount](const blitz::protocol::data::KeepAlive&) {
+		server.GetConnection(0)->SendKeepAlive({69});
+		serverSendCount++;
+	});
+
+	client.GetConnection().OnKeepAlive.Connect([&client, &clientSendCount](const blitz::protocol::data::KeepAlive&) {
+		client.GetConnection().SendKeepAlive({69});
+		clientSendCount++;
+	});
+
+	std::this_thread::sleep_for(1s);
+
+	client.GetConnection().SendKeepAlive({69});
+
+	std::this_thread::sleep_for(1s);
+
+	blitz_test_assert(serverSendCount > 10 && clientSendCount > 10);
+
+	return BLITZ_TEST_SUCCESSFUL;
+}

test/blitz/protocol/PacketFactory_test.cpp

@@ -0,0 +1,15 @@
+#include <blitz/protocol/PacketFactory.h>
+
+static int Test() {
+    for (std::size_t i = 0; i < static_cast<int>(blitz::protocol::PacketType::PACKET_COUNT); i++) {
+        blitz::protocol::PacketType packetType = blitz::protocol::PacketType(i);
+
+        if (blitz::protocol::PacketFactory::CreateReadOnlyPacket(packetType)->GetType() != packetType)
+            return 1;
+    }
+    return 0;
+}
+
+int main() {
+    return Test();
+}

test/blitz/protocol/PacketSerializer_test.cpp

@@ -0,0 +1,31 @@
+#include <blitz/protocol/PacketSerializer.h>
+
+#include <blitz/protocol/PacketFactory.h>
+#include <blitz/utils/Test.h>
+
+namespace bp = blitz::protocol;
+
+static int TestAllPackets() {
+    for (std::size_t i = 0; i < static_cast<std::size_t>(bp::PacketType::PACKET_COUNT); i++) {
+        const auto& packet = bp::PacketFactory::CreateReadOnlyPacket(bp::PacketType(i));
+
+        Nz::ByteArray buffer = bp::PacketSerializer::Serialize(*packet.get());
+
+        bp::PacketPtr packet2 = bp::PacketSerializer::Deserialize(buffer);
+
+        blitz_test_assert(packet2 != nullptr);
+
+        blitz_test_assert(packet2->GetType() == packet->GetType());
+    }
+    return 0;
+}
+
+static void Test() {
+    bp::packets::ChatMessage packet({"caca"});
+    Nz::ByteArray buffer = bp::PacketSerializer::Serialize(packet);
+}
+
+int main() {
+    Test();
+    return TestAllPackets();
+}

xmake.lua

@@ -1,16 +1,57 @@
 add_rules("mode.debug", "mode.release")
 
 add_repositories("nazara-repo https://github.com/NazaraEngine/xmake-repo.git")
-add_requires("nazaraengine", { debug = is_mode("debug") })
+add_repositories("nazara-imgui-repo https://github.com/SweetId/NazaraImgui-xmake-repo")
+
+add_requires("nazaraengine", { debug = false })
+add_requires("nazaraimgui")
 
 set_languages("c++20")
+set_warnings("all")
+
+if is_mode("release") then
+    set_warnings("all", "error")
+end
+
+add_includedirs("include")
 
 target("Blitz2")
+    set_kind("static")
+    add_files("src/blitz/**.cpp", "src/server/**.cpp")
+    add_packages("nazaraimgui", "nazaraengine", {public = true})
+
+target("Blitz2Server")
     set_kind("binary")
-    add_files("src/*.cpp")
+    add_deps("Blitz2")
-    add_packages("nazaraengine")
+    set_default(false)
+    add_files("src/ServerMain.cpp")
+
+
+target("Blitz2Client")
+    set_kind("binary")
+    add_files("src/ClientMain.cpp", "src/client/**.cpp")
+    add_deps("Blitz2")
     set_rundir(".")
 
+
+-- Tests were introduced in that version
+set_xmakever("2.8.5")
+
+-- Tests
+for _, file in ipairs(os.files("test/**.cpp")) do
+    local name = path.basename(file)
+    target(name)
+        set_kind("binary")
+
+        add_files(file)
+
+        set_default(false)
+
+        add_deps("Blitz2")
+
+        add_tests("compile_and_run")
+end
+
 --
 -- If you want to known more usage about xmake, please see https://xmake.io
 --