Merge branch 'network'

app/src/main/java/common/Signal.java

@@ -0,0 +1,31 @@
+package common;
+
+import java.util.HashSet;
+import java.util.Set;
+
+public class Signal {
+
+	private final Set<Runnable> listeners;
+
+	public Signal() {
+		this.listeners = new HashSet<>();
+	}
+
+	public void connect(Runnable listener) {
+		this.listeners.add(listener);
+	}
+
+	public void clear() {
+		this.listeners.clear();
+	}
+
+	public void emit() {
+		for (Runnable listener : this.listeners) {
+			listener.run();
+		}
+	}
+	
+	// public void disconnect(Runnable listener) {
+	// 	this.listeners.remove(listener);
+	// }
+}

app/src/main/java/game/Game.java

@@ -0,0 +1,52 @@
+package game;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import sudoku.structure.MultiDoku;
+
+public class Game {
+
+	public static enum GameState {
+		GameNotStarted, GameGoing, GameEnd
+	}
+
+	private final Map<Integer, Player> players;
+	private GameState gameState;
+	private MultiDoku doku;
+
+	public Game() {
+		this.players = new HashMap<>();
+		this.gameState = GameState.GameNotStarted;
+	}
+
+	public Player getPlayerById(int id) {
+		return players.get(id);
+	}
+
+	public void addPlayer(Player player) {
+		players.put(player.getId(), player);
+	}
+
+	public void removePlayer(int id) {
+		players.remove(id);
+	}
+
+	public Map<Integer, Player> getPlayers() {
+		return players;
+	}
+
+	public void startGame(MultiDoku doku) {
+		this.doku = doku;
+		this.gameState = GameState.GameGoing;
+	}
+
+	public GameState getGameState() {
+		return gameState;
+	}
+
+	public MultiDoku getDoku() {
+		return doku;
+	}
+
+}

app/src/main/java/game/Player.java

@@ -0,0 +1,25 @@
+package game;
+
+import java.io.Serializable;
+
+public class Player implements Serializable {
+
+	static private final long serialVersionUID = 9999;
+
+	private final String pseudo;
+	private final int id;
+
+	public Player(int id, String pseudo) {
+		this.pseudo = pseudo;
+		this.id = id;
+	}
+
+	public String getPseudo() {
+		return this.pseudo;
+	}
+
+	public int getId() {
+		return this.id;
+	}
+
+}

app/src/main/java/gui/Main.java

@@ -15,6 +15,11 @@ public class Main extends Application {
         config.setTitle("Let's play sudoku!");
     }
 
+    @Override
+    protected void disposeWindow() {
+        stateMachine.clear();
+    }
+
     @Override
     protected void initImGui(Configuration config) {
         super.initImGui(config);

app/src/main/java/gui/SudokuRenderer.java

@@ -12,36 +12,41 @@ import imgui.flag.ImGuiCol;
 import imgui.flag.ImGuiStyleVar;
 import sudoku.structure.Block;
 import sudoku.structure.Cell;
+import sudoku.structure.MultiDoku;
 import sudoku.structure.Sudoku;
 
 public class SudokuRenderer {
 
-	private final Sudoku sudoku;
+	private final MultiDoku doku;
+	private Sudoku currentSudoku;
 	private int currentIndex = -1;
 	private final Map<Block, Color> colorPalette;
 
-	public SudokuRenderer(Sudoku sudoku) {
-		this.sudoku = sudoku;
-		this.colorPalette = new HashMap<>();
-		initColors();
+	public SudokuRenderer(MultiDoku doku) {
+		this.doku = doku;
+		this.currentSudoku = doku.getSubGrid(0);
+		this.colorPalette = initColors();
 	}
 
-	private void initColors() {
-		List<Color> colors = ColorGenerator.greatPalette(sudoku.getSize());
+	private Map<Block, Color> initColors() {
+		List<Color> colors = ColorGenerator.greatPalette(currentSudoku.getSize());
+		Map<Block, Color> colorPalette = new HashMap<>();
 		int index = 0;
-		for (Block block : sudoku.getBlocks()) {
+		for (Block block : currentSudoku.getBlocks()) {
 			colorPalette.put(block, colors.get(index));
 			index++;
 		}
+		return colorPalette;
 	}
 
 	private void renderPopup() {
 		if (ImGui.beginPopup("editPopup")) {
-			for (int i = 1; i < sudoku.getSize() + 1; i++) {
-				if (i % (int) (Math.sqrt(sudoku.getSize())) != 1)
+			for (int i = 1; i < currentSudoku.getSize() + 1; i++) {
+				if (i % (int) (Math.sqrt(currentSudoku.getSize())) != 1)
 					ImGui.sameLine();
 				if (ImGui.button(Integer.toString(i), new ImVec2(50, 50))) {
-					this.sudoku.setCellSymbol(currentIndex % sudoku.getSize(), currentIndex / sudoku.getSize(), i - 1);
+					this.currentSudoku.setCellSymbol(currentIndex % currentSudoku.getSize(),
+							currentIndex / currentSudoku.getSize(), i - 1);
 					ImGui.closeCurrentPopup();
 				}
 			}
@@ -50,30 +55,31 @@ public class SudokuRenderer {
 	}
 
 	public void render() {
-		ImGui.begin("Sudoku Window");
-		for (int y = 0; y < sudoku.getSize(); y++) {
-			for (int x = 0; x < sudoku.getSize(); x++) {
+		ImGui.pushStyleVar(ImGuiStyleVar.FrameBorderSize, 2.0f);
+		ImGui.pushStyleVar(ImGuiStyleVar.ItemSpacing, new ImVec2(0.0f, 0.0f));
+		ImGui.pushStyleColor(ImGuiCol.Border, new ImVec4(0.0f, 0.0f, 0.0f, 1.0f));
+		for (int y = 0; y < currentSudoku.getSize(); y++) {
+			for (int x = 0; x < currentSudoku.getSize(); x++) {
 				if (x > 0)
 					ImGui.sameLine();
-				int index = y * sudoku.getSize() + x;
-				Cell cell = sudoku.getCell(x, y);
+				int index = y * currentSudoku.getSize() + x;
+				Cell cell = currentSudoku.getCell(x, y);
 				int symbol = cell.getSymbolIndex();
 				Color blockColor = colorPalette.get(cell.getBlock());
-				ImGui.pushStyleVar(ImGuiStyleVar.SelectableTextAlign, new ImVec2(0.5f, 0.5f));
-				ImGui.pushStyleColor(ImGuiCol.Header, new ImVec4(blockColor.r, blockColor.g, blockColor.b, 1.0f));
+				ImGui.pushStyleColor(ImGuiCol.Button, new ImVec4(blockColor.r, blockColor.g, blockColor.b, 1.0f));
 				String cellText = "";
 				if (symbol != -1)
 					cellText += Integer.toString(symbol + 1);
-				if (ImGui.selectable(cellText + "##" + index, true, 0, new ImVec2(50, 50))) {
+				if (ImGui.button(cellText + "##" + index, new ImVec2(50, 50))) {
 					ImGui.openPopup("editPopup");
 					currentIndex = index;
 				}
-				ImGui.popStyleVar();
 				ImGui.popStyleColor();
 			}
 		}
+		ImGui.popStyleColor();
+		ImGui.popStyleVar(2);
 		renderPopup();
-		ImGui.end();
 	}
 
 }

app/src/main/java/gui/menu/BaseView.java

@@ -12,8 +12,16 @@ public abstract class BaseView {
 
 	public abstract void render();
 
+	public void cleanResources() {}
+
+	public void closeMenu(int count) {
+		for (int i = 0; i < count; i++) {
+			this.stateMachine.popState();
+		}
+	}
+
 	public void closeMenu() {
-		this.stateMachine.popState();
+		closeMenu(1);
 	}
 
 	protected void renderReturnButton() {

app/src/main/java/gui/menu/ConnexionStatusView.java

@@ -0,0 +1,105 @@
+package gui.menu;
+
+import java.io.IOException;
+import java.net.UnknownHostException;
+
+import imgui.ImGui;
+import network.client.Client;
+import network.server.Server;
+
+public class ConnexionStatusView extends BaseView {
+
+	private Client client;
+	private Server server;
+
+	private String displayText = "Connecting ...";
+
+	public ConnexionStatusView(StateMachine stateMachine, String address, short port)
+			throws UnknownHostException, IOException {
+		super(stateMachine);
+		Thread t = new Thread(() -> {
+			try {
+				this.client = new Client(address, port);
+				bindListeners();
+			} catch (IOException e) {
+				e.printStackTrace();
+				onDisconnect();
+			}
+		});
+		t.start();
+	}
+
+	public ConnexionStatusView(StateMachine stateMachine, short port) throws UnknownHostException, IOException {
+		super(stateMachine);
+		Thread t = new Thread(() -> {
+			try {
+				this.server = new Server(port);
+				this.client = new Client("localhost", port);
+				bindListeners();
+			} catch (IOException e) {
+				e.printStackTrace();
+				onDisconnect();
+			}
+		});
+		t.start();
+	}
+
+	private void bindListeners() {
+		this.client.onConnect.connect(this::onConnect);
+		this.client.onClosed.connect(this::onLeave);
+		this.client.onDisconnect.connect(this::onDisconnect);
+	}
+
+	private ConnexionStatusView(StateMachine stateMachine, Server server, Client client) {
+		super(stateMachine);
+		this.client = client;
+		this.server = server;
+	}
+
+	public void onConnect() {
+		this.stateMachine.pushState(new MultiPlayerView(stateMachine, client, server));
+	}
+
+	public void onDisconnect() {
+		if (client != null) {
+			String reason = client.getDisconnectReason();
+			if (reason == null)
+				displayText = "Le serveur a fermé la connexion !";
+			else
+				displayText = "Vous avez été déconnecté ! Raison : " + client.getDisconnectReason();
+		} else {
+			displayText = "La connexion a échoué !";
+		}
+
+	}
+
+	public void onLeave() {
+		this.client = null;
+		// on passe le menu de la connexion
+		this.closeMenu();
+	}
+
+	@Override
+	public void render() {
+		ImGui.text(displayText);
+		renderReturnButton();
+	}
+
+	@Override
+	public void closeMenu() {
+		super.closeMenu();
+		cleanResources();
+	}
+
+	@Override
+	public void cleanResources() {
+		// System.out.println("Bye bye !");
+		if (this.server != null) {
+			this.server.stop();
+		}
+		if (this.client != null) {
+			this.client.stop();
+		}
+	}
+
+}

app/src/main/java/gui/menu/CreateGameMenu.java

@@ -1,17 +0,0 @@
-package gui.menu;
-
-import imgui.ImGui;
-
-public class CreateGameMenu extends BaseView {
-
-	public CreateGameMenu(StateMachine stateMachine) {
-		super(stateMachine);
-	}
-
-	@Override
-	public void render() {
-		ImGui.text("Créer");
-		renderReturnButton();
-	}
-
-}

app/src/main/java/gui/menu/JoinGameMenu.java

@@ -1,17 +0,0 @@
-package gui.menu;
-
-import imgui.ImGui;
-
-public class JoinGameMenu extends BaseView {
-
-	public JoinGameMenu(StateMachine stateMachine) {
-		super(stateMachine);
-	}
-
-	@Override
-	public void render() {
-		ImGui.text("Rejoindre");
-		renderReturnButton();
-	}
-
-}

app/src/main/java/gui/menu/MultiMenu.java

@@ -1,5 +1,7 @@
 package gui.menu;
 
+import java.io.IOException;
+
 import imgui.ImGui;
 import imgui.ImVec2;
 import imgui.type.ImInt;
@@ -12,6 +14,7 @@ public class MultiMenu extends BaseView {
 
 	public MultiMenu(StateMachine stateMachine) {
 		super(stateMachine);
+		address.resize(20);
 	}
 
 	private void renderCreate() {
@@ -19,7 +22,11 @@ public class MultiMenu extends BaseView {
 		ImGui.beginChild("##CreateGame", new ImVec2(displaySize.x / 2.0f, displaySize.y * 8.0f / 9.0f));
 		ImGui.inputInt("Port", port);
 		if (ImGui.button("Créer")) {
-			// TODO: create game
+			try {
+				this.stateMachine.pushState(new ConnexionStatusView(stateMachine, (short) port.get()));
+			} catch (IOException e) {
+				e.printStackTrace();
+			}
 		}
 		ImGui.endChild();
 	}
@@ -30,7 +37,12 @@ public class MultiMenu extends BaseView {
 		ImGui.inputText("Adresse", address);
 		ImGui.inputInt("Port", port);
 		if (ImGui.button("Rejoindre")) {
-			// TODO: join game
+			try {
+				this.stateMachine.pushState(new ConnexionStatusView(stateMachine, address.get(), (short) port.get()));
+			} catch (IOException e) {
+				// TODO Auto-generated catch block
+				e.printStackTrace();
+			}
 		}
 		ImGui.endChild();
 	}

app/src/main/java/gui/menu/MultiPlayerDokuView.java

@@ -0,0 +1,37 @@
+package gui.menu;
+
+import gui.SudokuRenderer;
+import imgui.ImGui;
+import network.client.Client;
+import network.server.Server;
+
+public class MultiPlayerDokuView extends BaseView{
+
+	private final Client client;
+	private final Server server;
+	private final SudokuRenderer sudokuRenderer;
+
+	public MultiPlayerDokuView(StateMachine stateMachine, Client client, Server server) {
+		super(stateMachine);
+		this.client = client;
+		this.server = server;
+		this.sudokuRenderer = new SudokuRenderer(this.client.getGame().getDoku());
+		this.client.onDisconnect.connect(this::onDisconnect);
+	}
+
+	public void onDisconnect() {
+		if (server == null) {
+			closeMenu();
+		}
+	}
+
+	@Override
+	public void render() {
+		this.sudokuRenderer.render();
+		if (ImGui.button("Quitter")) {
+			this.client.stop();
+			this.closeMenu(3);
+		}
+	}
+
+}

app/src/main/java/gui/menu/MultiPlayerView.java

@@ -0,0 +1,56 @@
+package gui.menu;
+
+import game.Player;
+import imgui.ImGui;
+import network.client.Client;
+import network.server.Server;
+import sudoku.structure.MultiDoku;
+import sudoku.structure.SudokuFactory;
+
+public class MultiPlayerView extends BaseView {
+
+	private final Client client;
+	private final Server server;
+
+	public MultiPlayerView(StateMachine stateMachine, Client client, Server server) {
+		super(stateMachine);
+		this.client = client;
+		this.server = server;
+		this.client.onDisconnect.connect(this::onDisconnect);
+		this.client.onGameStarted.connect(() -> this.stateMachine.pushState(new MultiPlayerDokuView(stateMachine, client, server)));
+	}
+
+	@Override
+	public void closeMenu() {
+		this.client.forceDisconnect();
+		super.closeMenu();
+	}
+
+	public void onDisconnect() {
+		this.stateMachine.popState();
+	}
+
+	public void renderGameStatus() {
+		if (this.server == null) {
+			ImGui.text("En attente de l'administrateur du serveur ...");
+		} else {
+			if (ImGui.button("Démarrer")) {
+				// temp
+				MultiDoku doku = SudokuFactory.createBasicEmptySquareSudoku(5);
+				this.server.startGame(doku);
+			}
+		}
+	}
+
+	@Override
+	public void render() {
+		ImGui.text("Joueurs :");
+		{
+			for (Player player : this.client.getGame().getPlayers().values()) {
+				ImGui.bulletText(player.getPseudo());
+			}
+		}
+		renderGameStatus();
+	}
+
+}

app/src/main/java/gui/menu/StateMachine.java

@@ -15,11 +15,19 @@ public class StateMachine {
 		this.menus = new Stack<>();
 	}
 
+	public void clear() {
+		for (BaseView view : menus) {
+			view.cleanResources();
+		}
+		menus.clear();
+	}
+
 	public void pushState(BaseView menu) {
 		menus.add(menu);
 	}
 
 	public void popState() {
+		menus.getLast().cleanResources();
 		menus.pop();
 	}
 
@@ -35,8 +43,9 @@ public class StateMachine {
 		ImGui.setNextWindowSize(displaySize);
 		ImGui.begin("##Main Window", null, ImGuiWindowFlags.NoDecoration | ImGuiWindowFlags.NoMove
 				| ImGuiWindowFlags.NoSavedSettings | ImGuiWindowFlags.NoBackground);
-		menus.getLast().render();
+		menus.get(menus.size() - 1).render();
 		ImGui.end();
+		// ImGui.showDemoWindow();
 		checkEscape();
 	}
 

app/src/main/java/network/Connexion.java

@@ -0,0 +1,40 @@
+package network;
+
+import java.io.IOException;
+import java.io.ObjectOutputStream;
+import java.net.Socket;
+
+import network.protocol.Packet;
+import network.protocol.PacketVisitor;
+
+public abstract class Connexion implements PacketVisitor {
+	
+	final Socket socket;
+	private final ObjectOutputStream objectOutputStream;
+	private final ConnexionThread connexionThread;
+
+	public Connexion(Socket socket) throws IOException {
+		this.socket = socket;
+		this.objectOutputStream = new ObjectOutputStream(this.socket.getOutputStream());
+		this.connexionThread = new ConnexionThread(this);
+		this.connexionThread.start();
+	}
+
+	public boolean isClosed() {
+		return this.socket.isClosed();
+	}
+
+	public synchronized void sendPacket(Packet packet) {
+		try {
+			objectOutputStream.writeObject(packet);
+			objectOutputStream.flush();
+		} catch (IOException e) {
+			System.err.println("Error while sending packet ! " + e.getLocalizedMessage());
+			close();
+		}
+	}
+
+	public void close() {
+		this.connexionThread.cancel();
+	}
+}

app/src/main/java/network/ConnexionThread.java

@@ -0,0 +1,44 @@
+package network;
+
+import java.io.IOException;
+import java.io.ObjectInputStream;
+
+import network.protocol.Packet;
+
+public class ConnexionThread extends Thread {
+
+	private final Connexion connexion;
+	private final ObjectInputStream objectInputStream;
+
+	public ConnexionThread(Connexion connexion) throws IOException {
+		this.connexion = connexion;
+		this.objectInputStream = new ObjectInputStream(this.connexion.socket.getInputStream());
+	}
+
+	@Override
+	public void run() {
+		while (!interrupted()) {
+			try {
+				// System.out.println(objectInputStream.available());
+				Object o = objectInputStream.readObject();
+				if (o instanceof Packet packet) {
+					connexion.visitPacket(packet);
+				}
+			} catch (ClassNotFoundException | IOException e) {
+				e.printStackTrace();
+				this.connexion.close();
+				break;
+			}
+		}
+	}
+
+	public void cancel() {
+		try {
+			objectInputStream.close();
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+		interrupt();
+	}
+
+}

app/src/main/java/network/client/Client.java

@@ -0,0 +1,57 @@
+package network.client;
+
+import java.io.IOException;
+import java.net.UnknownHostException;
+import java.util.Random;
+
+import common.Signal;
+import game.Game;
+import game.Player;
+import network.protocol.packets.LoginPacket;
+
+public class Client {
+	private final ClientConnexion clientConnection;
+	private final Game game;
+
+	public final Signal onConnect = new Signal();
+	public final Signal onDisconnect = new Signal();
+	public final Signal onClosed = new Signal();
+	public final Signal onGameStarted = new Signal();
+
+	String disconnectReason = null;
+
+	public Client(String address, short port) throws UnknownHostException, IOException {
+		this.clientConnection = new ClientConnexion(address, port, this);
+		this.game = new Game();
+		// temp
+		Random r = new Random();
+		login("Player" + r.nextInt());
+	}
+
+	public void login(String pseudo) {
+		System.out.println("Logging in with pseudo " + pseudo + " ...");
+		this.clientConnection.sendPacket(new LoginPacket(pseudo));
+	}
+
+	public void stop() {
+		this.clientConnection.close();
+	}
+
+	public void addPlayer(Player player) {
+		this.game.addPlayer(player);
+	}
+
+	public Game getGame() {
+		return game;
+	}
+
+	public String getDisconnectReason() {
+		return disconnectReason;
+	}
+
+	public void forceDisconnect() {
+		this.onClosed.emit();
+		stop();
+	}
+
+}

app/src/main/java/network/client/ClientConnexion.java

@@ -0,0 +1,76 @@
+package network.client;
+
+import java.io.IOException;
+import java.net.Socket;
+import java.net.UnknownHostException;
+
+import game.Player;
+import network.Connexion;
+import network.protocol.packets.ConnexionInfoPacket;
+import network.protocol.packets.DisconnectPacket;
+import network.protocol.packets.KeepAlivePacket;
+import network.protocol.packets.LoginPacket;
+import network.protocol.packets.PlayerJoinPacket;
+import network.protocol.packets.PlayerLeavePacket;
+import network.protocol.packets.StartGamePacket;
+import sudoku.io.SudokuSerializer;
+
+public class ClientConnexion extends Connexion {
+
+	private final Client client;
+	private Player player = null;
+
+	public ClientConnexion(String address, short port, Client client) throws UnknownHostException, IOException {
+		super(new Socket(address, port));
+		this.client = client;
+	}
+
+	@Override
+	public void close() {
+		if (!this.isClosed()) {
+			super.close();
+			client.onDisconnect.emit();
+		}
+	}
+
+	@Override
+	public void visitPacket(ConnexionInfoPacket packet) {
+		this.player = this.client.getGame().getPlayerById(packet.getConnectionId());
+		client.onConnect.emit();
+	}
+
+	@Override
+	public void visitPacket(KeepAlivePacket packet) {
+		// we just send the packet back to the server
+		sendPacket(packet);
+	}
+
+	@Override
+	public void visitPacket(DisconnectPacket packet) {
+		this.client.disconnectReason = packet.getReason();
+		close();
+	}
+
+	@Override
+	public void visitPacket(LoginPacket packet) {
+		throw new UnsupportedOperationException("Unimplemented method 'visitPacketLogin'");
+	}
+
+	@Override
+	public void visitPacket(PlayerJoinPacket packet) {
+		this.client.addPlayer(packet.getPlayer());
+		System.out.println("[Client] " + packet.getPlayer().getPseudo() + " joined the game !");
+	}
+
+	@Override
+	public void visitPacket(PlayerLeavePacket packet) {
+		this.client.getGame().removePlayer(packet.getPlayer());
+	}
+
+	@Override
+	public void visitPacket(StartGamePacket packet) {
+		this.client.getGame().startGame(SudokuSerializer.deserializeSudoku(packet.getSerializedSudoku()));
+		this.client.onGameStarted.emit();
+	}
+
+}

app/src/main/java/network/protocol/Packet.java

@@ -0,0 +1,11 @@
+package network.protocol;
+
+import java.io.Serializable;
+
+public abstract class Packet implements Serializable {
+
+	// public abstract int getId();
+
+	public abstract void accept(PacketVisitor packetVisitor);
+
+}

app/src/main/java/network/protocol/PacketDispatcher.java

@@ -0,0 +1,28 @@
+package network.protocol;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class PacketDispatcher {
+
+	private final List<PacketVisitor> handlers;
+
+	public PacketDispatcher() {
+		this.handlers = new ArrayList<>();
+	}
+
+	public void dispatch(Packet packet) {
+		for (PacketVisitor handler : handlers) {
+			handler.visitPacket(packet);
+		}
+	}
+
+	public void registerHandler(PacketVisitor handler) {
+		handlers.add(handler);
+	}
+
+	public void unregisterHandler(PacketVisitor handler) {
+		handlers.remove(handler);
+	}
+
+}

app/src/main/java/network/protocol/PacketFactory.java

@@ -0,0 +1,6 @@
+package network.protocol;
+
+public class PacketFactory {
+
+
+}

app/src/main/java/network/protocol/PacketVisitor.java

@@ -0,0 +1,25 @@
+package network.protocol;
+
+import network.protocol.packets.ConnexionInfoPacket;
+import network.protocol.packets.DisconnectPacket;
+import network.protocol.packets.KeepAlivePacket;
+import network.protocol.packets.LoginPacket;
+import network.protocol.packets.PlayerJoinPacket;
+import network.protocol.packets.PlayerLeavePacket;
+import network.protocol.packets.StartGamePacket;
+
+public interface PacketVisitor {
+
+	default void visitPacket(Packet packet) {
+		packet.accept(this);
+	}
+	
+	void visitPacket(ConnexionInfoPacket packet);
+	void visitPacket(DisconnectPacket packet);
+	void visitPacket(KeepAlivePacket packet);
+	void visitPacket(LoginPacket packet);
+	void visitPacket(PlayerJoinPacket packet);
+	void visitPacket(PlayerLeavePacket packet);
+	void visitPacket(StartGamePacket packet);
+	
+}

app/src/main/java/network/protocol/Packets.java

@@ -0,0 +1,7 @@
+package network.protocol;
+
+public enum Packets {
+
+	ConnectionInfo, KeepAlive, Disconnect, Login, PlayerJoin, PlayerLeave, StartGame
+
+}

app/src/main/java/network/protocol/packets/ConnexionInfoPacket.java

@@ -0,0 +1,25 @@
+package network.protocol.packets;
+
+import network.protocol.Packet;
+import network.protocol.PacketVisitor;
+import network.protocol.Packets;
+
+public class ConnexionInfoPacket extends Packet {
+
+	static private final long serialVersionUID = Packets.ConnectionInfo.ordinal();
+
+	private final int connectionId;
+
+	public ConnexionInfoPacket(int connectionId) {
+		this.connectionId = connectionId;
+	}
+
+	public int getConnectionId() {
+		return connectionId;
+	}
+	
+	@Override
+	public void accept(PacketVisitor packetVisitor) {
+		packetVisitor.visitPacket(this);
+	}
+}

app/src/main/java/network/protocol/packets/DisconnectPacket.java

@@ -0,0 +1,26 @@
+package network.protocol.packets;
+
+import network.protocol.Packet;
+import network.protocol.PacketVisitor;
+import network.protocol.Packets;
+
+public class DisconnectPacket extends Packet {
+
+	static private final long serialVersionUID = Packets.Disconnect.ordinal();
+
+	private final String reason;
+
+	public DisconnectPacket(String reason) {
+		this.reason = reason;
+	}
+
+	public String getReason() {
+		return reason;
+	}
+
+	@Override
+	public void accept(PacketVisitor packetVisitor) {
+		packetVisitor.visitPacket(this);
+	}
+
+}

app/src/main/java/network/protocol/packets/KeepAlivePacket.java

@@ -0,0 +1,26 @@
+package network.protocol.packets;
+
+import network.protocol.Packet;
+import network.protocol.PacketVisitor;
+import network.protocol.Packets;
+
+public class KeepAlivePacket extends Packet {
+
+	static private final long serialVersionUID = Packets.KeepAlive.ordinal();
+
+	private final long keepAliveId;
+
+	public KeepAlivePacket(long keepAliveId) {
+		this.keepAliveId = keepAliveId;
+	}
+
+	public long getKeepAliveId() {
+		return keepAliveId;
+	}
+
+	@Override
+	public void accept(PacketVisitor packetVisitor) {
+		packetVisitor.visitPacket(this);
+	}
+
+}

app/src/main/java/network/protocol/packets/LoginPacket.java

@@ -0,0 +1,26 @@
+package network.protocol.packets;
+
+import network.protocol.Packet;
+import network.protocol.PacketVisitor;
+import network.protocol.Packets;
+
+public class LoginPacket extends Packet {
+
+	static private final long serialVersionUID = Packets.Login.ordinal();
+
+	private final String pseudo;
+
+	public LoginPacket(String pseudo) {
+		this.pseudo = pseudo;
+	}
+
+	public String getPseudo() {
+		return pseudo;
+	}
+
+	@Override
+	public void accept(PacketVisitor packetVisitor) {
+		packetVisitor.visitPacket(this);
+	}
+
+}

app/src/main/java/network/protocol/packets/PlayerJoinPacket.java

@@ -0,0 +1,29 @@
+package network.protocol.packets;
+
+import game.Player;
+import network.protocol.Packet;
+import network.protocol.PacketVisitor;
+import network.protocol.Packets;
+
+public class PlayerJoinPacket extends Packet{
+
+	static private final long serialVersionUID = Packets.PlayerJoin.ordinal();
+
+	private final Player player;
+
+	public PlayerJoinPacket(Player player) {
+		this.player = player;
+	}
+
+	public Player getPlayer() {
+		return player;
+	}
+
+	@Override
+	public void accept(PacketVisitor packetVisitor) {
+		packetVisitor.visitPacket(this);
+	}
+
+	
+
+}

app/src/main/java/network/protocol/packets/PlayerLeavePacket.java

@@ -0,0 +1,28 @@
+package network.protocol.packets;
+
+import network.protocol.Packet;
+import network.protocol.PacketVisitor;
+import network.protocol.Packets;
+
+public class PlayerLeavePacket extends Packet{
+
+	static private final long serialVersionUID = Packets.PlayerLeave.ordinal();
+
+	private final int playerId;
+
+	public PlayerLeavePacket(int playerId) {
+		this.playerId = playerId;
+	}
+
+	public int getPlayer() {
+		return playerId;
+	}
+
+	@Override
+	public void accept(PacketVisitor packetVisitor) {
+		packetVisitor.visitPacket(this);
+	}
+
+	
+
+}

app/src/main/java/network/protocol/packets/StartGamePacket.java

@@ -0,0 +1,26 @@
+package network.protocol.packets;
+
+import network.protocol.Packet;
+import network.protocol.PacketVisitor;
+import network.protocol.Packets;
+
+public class StartGamePacket extends Packet {
+
+	static private final long serialVersionUID = Packets.StartGame.ordinal();
+
+	private final String serializedSudoku;
+
+	public StartGamePacket(String serializedSudoku) {
+		this.serializedSudoku = serializedSudoku;
+	}
+
+	public String getSerializedSudoku() {
+		return serializedSudoku;
+	}
+
+	@Override
+	public void accept(PacketVisitor packetVisitor) {
+		packetVisitor.visitPacket(this);
+	}
+
+}

app/src/main/java/network/server/KeepAliveHandler.java

@@ -0,0 +1,49 @@
+package network.server;
+
+import java.util.Random;
+
+import network.protocol.packets.KeepAlivePacket;
+
+public class KeepAliveHandler {
+
+	private final ServerConnexion serverConnexion;
+
+	private static final int KEEP_ALIVE_COOLDOWN = 5 * 1000;
+
+	private long lastKeepAlive = 0;
+	private long lastSend = 0;
+	private volatile boolean keepAliveRecieved = false;
+
+	public KeepAliveHandler(ServerConnexion serverConnexion) {
+		this.serverConnexion = serverConnexion;
+		sendKeepAlive();
+	}
+
+	public boolean update() {
+		var currentTime = System.currentTimeMillis();
+		if (currentTime - lastSend > KEEP_ALIVE_COOLDOWN) {
+			if (keepAliveRecieved) {
+				sendKeepAlive();
+			} else {
+				System.out.println("Zombie");
+				serverConnexion.close();
+				return false;
+			}
+		}
+		return true;
+	}
+
+	public void recievedKeepAlive(long keepAliveId) {
+		if (lastKeepAlive == keepAliveId)
+			this.keepAliveRecieved = true;
+	}
+
+	private void sendKeepAlive() {
+		Random r = new Random();
+		lastKeepAlive = r.nextLong();
+		lastSend = System.currentTimeMillis();
+		keepAliveRecieved = false;
+		this.serverConnexion.sendPacket(new KeepAlivePacket(lastKeepAlive));
+	}
+
+}

app/src/main/java/network/server/Server.java

@@ -0,0 +1,76 @@
+package network.server;
+
+import java.io.IOException;
+import java.net.ServerSocket;
+import java.util.ArrayList;
+import java.util.List;
+
+import game.Game;
+import game.Player;
+import network.protocol.Packet;
+import network.protocol.packets.StartGamePacket;
+import sudoku.io.SudokuSerializer;
+import sudoku.structure.MultiDoku;
+
+public class Server {
+
+	final ServerSocket serverSocket;
+	final List<ServerConnexion> connexions;
+	private final ServerAcceptThread acceptThread;
+	private final ServerLogicThread logicThread;
+	private final Game game;
+	private int nextPlayerId = 0;
+
+	public Server(short port) throws IOException {
+		this.serverSocket = new ServerSocket(port);
+		this.connexions = new ArrayList<>();
+		this.acceptThread = new ServerAcceptThread(this);
+		this.acceptThread.start();
+		this.logicThread = new ServerLogicThread(this);
+		this.logicThread.start();
+		this.game = new Game();
+	}
+
+	public void broadcastPacket(Packet packet) {
+		for (ServerConnexion connexion : this.connexions) {
+			connexion.sendPacket(packet);
+		}
+	}
+
+	public void update() {
+		for (var it = connexions.iterator(); it.hasNext();) {
+			ServerConnexion connexion = it.next();
+			if (!connexion.update()) {
+				connexion.close();
+				connexion.nukeConnection();
+				it.remove();
+			}
+		}
+	}
+
+	public void stop() {
+		this.acceptThread.cancel();
+		this.logicThread.cancel();
+		for (ServerConnexion connexion : this.connexions) {
+			connexion.nukeConnection();
+			connexion.close();
+		}
+	}
+
+	public Player addPlayer(String pseudo) {
+		Player p = new Player(nextPlayerId, pseudo);
+		this.game.addPlayer(p);
+		nextPlayerId++;
+		return p;
+	}
+
+	public Game getGame() {
+		return game;
+	}
+
+	public void startGame(MultiDoku doku) {
+		this.game.startGame(doku);
+		broadcastPacket(new StartGamePacket(SudokuSerializer.serializeSudoku(doku)));
+	}
+
+}

app/src/main/java/network/server/ServerAcceptThread.java

@@ -0,0 +1,36 @@
+package network.server;
+
+import java.io.IOException;
+import java.net.Socket;
+
+public class ServerAcceptThread extends Thread {
+
+	private final Server server;
+
+	public ServerAcceptThread(Server server) {
+		this.server = server;
+	}
+
+	public void cancel() {
+		try {
+			this.server.serverSocket.close();
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+		interrupt();
+	}
+
+	@Override
+	public void run() {
+		try {
+			while(!interrupted()) {
+				Socket newConnection = this.server.serverSocket.accept();
+				ServerConnexion serverConnection = new ServerConnexion(newConnection, this.server);
+				this.server.connexions.add(serverConnection);
+			}
+		} catch(IOException e) {
+			// e.printStackTrace();
+		}
+	}
+
+}

app/src/main/java/network/server/ServerConnexion.java

@@ -0,0 +1,105 @@
+package network.server;
+
+import java.io.IOException;
+import java.net.Socket;
+
+import game.Player;
+import game.Game.GameState;
+import network.Connexion;
+import network.protocol.packets.ConnexionInfoPacket;
+import network.protocol.packets.DisconnectPacket;
+import network.protocol.packets.KeepAlivePacket;
+import network.protocol.packets.LoginPacket;
+import network.protocol.packets.PlayerJoinPacket;
+import network.protocol.packets.PlayerLeavePacket;
+import network.protocol.packets.StartGamePacket;
+import sudoku.io.SudokuSerializer;
+
+public class ServerConnexion extends Connexion {
+
+	private final Server server;
+	private final KeepAliveHandler keepAliveHandler;
+	private boolean shouldClose = false;
+	private Player player = null;
+
+	public ServerConnexion(Socket socket, Server server) throws IOException {
+		super(socket);
+		this.server = server;
+		this.keepAliveHandler = new KeepAliveHandler(this);
+	}
+
+	public boolean update() {
+		if (shouldClose | isClosed())
+			return false;
+		return this.keepAliveHandler.update();
+	}
+
+	public void nukeConnection() {
+		if (player != null) {
+			sendPacket(new DisconnectPacket("Le serveur a été fermé !"));
+			this.server.broadcastPacket(new PlayerLeavePacket(player.getId()));
+			this.server.getGame().removePlayer(player.getId());
+		}
+	}
+
+	@Override
+	public synchronized void close() {
+		if(shouldClose)
+			return;
+		super.close();
+		shouldClose = true;
+		System.out.println("[Server] Closing connexion !");
+	}
+
+	private void finishLogin() {
+		// send players that have already joined (excluding this one)
+		for (Player p : this.server.getGame().getPlayers().values()) {
+			if (p.getId() != player.getId())
+				sendPacket(new PlayerJoinPacket(p));
+		}
+		this.server.broadcastPacket(new PlayerJoinPacket(player));
+		sendPacket(new ConnexionInfoPacket(player.getId()));
+		if (this.server.getGame().getGameState() == GameState.GameGoing) {
+			sendPacket(new StartGamePacket(SudokuSerializer.serializeSudoku(this.server.getGame().getDoku())));
+		}
+	}
+
+	@Override
+	public void visitPacket(KeepAlivePacket packet) {
+		this.keepAliveHandler.recievedKeepAlive(packet.getKeepAliveId());
+	}
+
+	@Override
+	public void visitPacket(DisconnectPacket packet) {
+		close();
+	}
+
+	@Override
+	public void visitPacket(LoginPacket packet) {
+		if (this.player != null)
+			return;
+		this.player = this.server.addPlayer(packet.getPseudo());
+		finishLogin();
+	}
+
+	@Override
+	public void visitPacket(ConnexionInfoPacket packet) {
+		throw new UnsupportedOperationException("Unimplemented method 'visitPacketConnexionInfo'");
+	}
+
+	@Override
+	public void visitPacket(PlayerJoinPacket packet) {
+		throw new UnsupportedOperationException("Unimplemented method 'visitPacketPlayerJoin'");
+	}
+
+	@Override
+	public void visitPacket(PlayerLeavePacket packet) {
+		throw new UnsupportedOperationException("Unimplemented method 'visitPacketPlayerLeave'");
+	}
+
+	@Override
+	public void visitPacket(StartGamePacket packet) {
+		throw new UnsupportedOperationException("Unimplemented method 'visitPacketStartGame'");
+	}
+
+}

app/src/main/java/network/server/ServerLogicThread.java

@@ -0,0 +1,28 @@
+package network.server;
+
+public class ServerLogicThread extends Thread {
+
+	private final Server server;
+
+	public ServerLogicThread(Server server) {
+		this.server = server;
+	}
+
+	public void cancel() {
+		interrupt();
+	}
+
+	@Override
+	public void run() {
+		while (!interrupted()) {
+			server.update();
+			try {
+				Thread.sleep(50);
+			} catch (InterruptedException e) {
+				// e.printStackTrace();
+				break;
+			}
+		}
+	}
+
+}