.gitattributes

@@ -6,3 +6,4 @@
 # These are Windows script files and should use crlf
 *.bat           text eol=crlf
 *.glb filter=lfs diff=lfs merge=lfs -text
+*.fbx filter=lfs diff=lfs merge=lfs -text

.gitignore

@@ -8,5 +8,5 @@ app/bin
 
 .vscode
 
-audio/*.wav
+*.wav
-app/audio/*.wav
+imgui.ini

app/build.gradle

@@ -16,21 +16,29 @@ repositories {
     mavenCentral()
 }
 
+def os = "linux";
 def lwjgl_version = "3.3.6"
-def lwjgl_natives = "natives-linux"
+def lwjgl_natives = "natives-$os"
+def imgui_version = "1.87.0"
 
 dependencies {
     // Use JUnit Jupiter for testing.
-    testImplementation "org.junit.jupiter:junit-jupiter:5.11.4"
+    testImplementation "org.junit.jupiter:junit-jupiter:5.9.1"
 
     implementation "org.lwjgl:lwjgl:$lwjgl_version"
     implementation "org.lwjgl:lwjgl-opengl:$lwjgl_version"
     implementation "org.lwjgl:lwjgl-glfw:$lwjgl_version"
+    implementation "org.lwjgl:lwjgl-assimp:$lwjgl_version"
     implementation "org.joml:joml:1.10.8"
 
     implementation "org.lwjgl:lwjgl::$lwjgl_natives"
     implementation "org.lwjgl:lwjgl-opengl::$lwjgl_natives"
     implementation "org.lwjgl:lwjgl-glfw::$lwjgl_natives"
+    implementation "org.lwjgl:lwjgl-assimp::$lwjgl_natives"
+
+    implementation "io.github.spair:imgui-java-binding:$imgui_version"
+    implementation "io.github.spair:imgui-java-natives-$os:$imgui_version"
+    implementation "io.github.spair:imgui-java-app:$imgui_version"
 }
 
 application {
@@ -39,24 +47,16 @@ application {
     applicationName = "3DChess"
 }
 
-run {
-    standardInput = System.in
-}
-
-
-// Apply a specific Java toolchain to ease working on different environments.
-java {
-    toolchain {
-        languageVersion = JavaLanguageVersion.of(21)
-    }
-}
-
 jar {
     manifest {
         attributes 'Main-Class': application.mainClass
     }
 }
 
+run {
+    standardInput = System.in
+}
+
 tasks.named('test') {
     // Use JUnit Platform for unit tests.
     useJUnitPlatform()

app/src/main/java/chess/OpenGLMain.java

@@ -1,9 +1,21 @@
 package chess;
 
-import chess.view.DDDrender.Window;
+import chess.controller.CommandExecutor;
+import chess.controller.commands.NewGameCommand;
+import chess.model.Game;
+import chess.view.DDDrender.DDDView;
 
 public class OpenGLMain {
 	public static void main(String[] args) {
-        new Window().run();
+        Game game = new Game();
+        CommandExecutor commandExecutor = new CommandExecutor(game);
+
+        DDDView ddd = new DDDView(commandExecutor);
+        commandExecutor.addListener(ddd);
+        
+        commandExecutor.executeCommand(new NewGameCommand());
+
+        ddd.run();
+        commandExecutor.close();
     }
 }

app/src/main/java/chess/ai/actions/AIAction.java

@@ -1,11 +1,10 @@
 package chess.ai.actions;
 
-import chess.controller.Command;
 import chess.controller.CommandExecutor;
-import chess.controller.Command.CommandResult;
+import chess.controller.CommandSender;
 import chess.controller.commands.UndoCommand;
 
-public abstract class AIAction {
+public abstract class AIAction implements CommandSender {
 
 	private final CommandExecutor commandExecutor;
 
@@ -13,8 +12,9 @@ public abstract class AIAction {
 		this.commandExecutor = commandExecutor;
 	}
 
-	protected CommandResult sendCommand(Command cmd, CommandExecutor commandExecutor) {
+	@Override
-		return commandExecutor.executeCommand(cmd);
+	public CommandExecutor getCommandExecutor() {
+		return this.commandExecutor;
 	}
 
 	public void undoAction(CommandExecutor commandExecutor) {

app/src/main/java/chess/ai/minimax/GameSimulation.java

@@ -4,15 +4,9 @@ import java.util.List;
 
 import chess.ai.actions.AIAction;
 import chess.ai.actions.AIActions;
-import chess.controller.Command;
-import chess.controller.Command.CommandResult;
 import chess.controller.CommandExecutor;
-import chess.controller.commands.CastlingCommand;
+import chess.controller.CommandSender;
-import chess.controller.commands.MoveCommand;
-import chess.controller.commands.NewGameCommand;
-import chess.controller.commands.PromoteCommand;
 import chess.controller.commands.PromoteCommand.PromoteType;
-import chess.controller.commands.UndoCommand;
 import chess.controller.event.EmptyGameDispatcher;
 import chess.controller.event.GameAdapter;
 import chess.model.ChessBoard;
@@ -21,7 +15,7 @@ import chess.model.Game;
 import chess.model.Move;
 import chess.model.PermissiveGame;
 
-public class GameSimulation extends GameAdapter {
+public class GameSimulation extends GameAdapter implements CommandSender {
 
 	private final CommandExecutor simulation;
 	private final Game gameSimulation;
@@ -31,48 +25,33 @@ public class GameSimulation extends GameAdapter {
 		this.simulation = new CommandExecutor(gameSimulation, new EmptyGameDispatcher());
 	}
 
-	protected CommandResult sendCommand(Command command) {
-		CommandResult result = this.simulation.executeCommand(command);
-		if (result == CommandResult.NotAllowed) {
-			System.out.println("eeeeee");
-		}
-		return result;
-	}
-
-	public void tryMove(Move move) {
-		sendCommand(new MoveCommand(move));
-		if (this.gameSimulation.getBoard().pawnShouldBePromoted())
-			sendCommand(new PromoteCommand(PromoteType.Queen));
-	}
-
-	public void undoMove() {
-		sendCommand(new UndoCommand());
-	}
-
 	@Override
 	public void onPawnPromoted(PromoteType promotion) {
-		sendCommand(new PromoteCommand(promotion));
+		sendPawnPromotion(promotion);
 	}
 
 	@Override
 	public void onCastling(boolean bigCastling) {
-		sendCommand(new CastlingCommand(bigCastling));
+		if (bigCastling)
+			sendBigCastling();
+		else
+			sendCastling();
 	}
 
 	@Override
 	public void onMove(Move move, boolean captured) {
-		sendCommand(new MoveCommand(move));
+		sendMove(move);
 	}
 
 	@Override
 	public void onGameStart() {
-		sendCommand(new NewGameCommand());
+		sendStartGame();
 	}
 
 	@Override
 	public void onPlayerTurn(Color color, boolean undone) {
 		if (undone)
-			sendCommand(new UndoCommand());
+			sendUndo();
 	}
 
 	public CommandExecutor getCommandExecutor() {

app/src/main/java/chess/controller/CommandSender.java

@@ -0,0 +1,102 @@
+package chess.controller;
+
+import java.util.List;
+
+import chess.controller.Command.CommandResult;
+import chess.controller.commands.CastlingCommand;
+import chess.controller.commands.GetAllowedCastlingsCommand;
+import chess.controller.commands.GetAllowedMovesPieceCommand;
+import chess.controller.commands.GetPieceAtCommand;
+import chess.controller.commands.GetPlayerMovesCommand;
+import chess.controller.commands.MoveCommand;
+import chess.controller.commands.NewGameCommand;
+import chess.controller.commands.PromoteCommand;
+import chess.controller.commands.SurrenderCommand;
+import chess.controller.commands.UndoCommand;
+import chess.controller.commands.GetAllowedCastlingsCommand.CastlingResult;
+import chess.controller.commands.PromoteCommand.PromoteType;
+import chess.model.Color;
+import chess.model.Coordinate;
+import chess.model.Move;
+import chess.model.Piece;
+
+public interface CommandSender {
+
+	CommandExecutor getCommandExecutor();
+
+	default CommandResult sendCommand(Command cmd, CommandExecutor commandExecutor) {
+		CommandResult result = commandExecutor.executeCommand(cmd);
+		if (result == CommandResult.NotAllowed) {
+			// maybe do something
+		}
+		return result;
+	}
+
+	default CommandResult sendCommand(Command cmd) {
+		return sendCommand(cmd, getCommandExecutor());
+	}
+
+	// inputs
+
+	default CastlingResult getAllowedCastlings() {
+		GetAllowedCastlingsCommand cmd = new GetAllowedCastlingsCommand();
+		sendCommand(cmd);
+		return cmd.getCastlingResult();
+	}
+
+	default Piece getPieceAt(int x, int y) {
+		return getPieceAt(new Coordinate(x, y));
+	}
+
+	default Piece getPieceAt(Coordinate coordinate) {
+		GetPieceAtCommand cmd = new GetPieceAtCommand(coordinate);
+		sendCommand(cmd);
+		return cmd.getPiece();
+	}
+
+	default boolean isCellEmpty(int x, int y) {
+		return getPieceAt(x, y) == null;
+	}
+
+	default List<Move> getPlayerMoves() {
+		GetPlayerMovesCommand cmd = new GetPlayerMovesCommand();
+		sendCommand(cmd);
+		return cmd.getMoves();
+	}
+
+	default List<Coordinate> getPieceAllowedMoves(Coordinate piecePos) {
+		GetAllowedMovesPieceCommand cmd = new GetAllowedMovesPieceCommand(piecePos);
+		sendCommand(cmd);
+		return cmd.getDestinations();
+	}
+
+	// outputs
+
+	default CommandResult sendCastling() {
+		return sendCommand(new CastlingCommand(false));
+	}
+
+	default CommandResult sendBigCastling() {
+		return sendCommand(new CastlingCommand(false));
+	}
+
+	default CommandResult sendMove(Move move) {
+		return sendCommand(new MoveCommand(move));
+	}
+
+	default CommandResult sendStartGame() {
+		return sendCommand(new NewGameCommand());
+	}
+
+	default CommandResult sendPawnPromotion(PromoteType promote) {
+		return sendCommand(new PromoteCommand(promote));
+	}
+
+	default CommandResult sendSurrender(Color player) {
+		return sendCommand(new SurrenderCommand(player));
+	}
+
+	default CommandResult sendUndo() {
+		return sendCommand(new UndoCommand());
+	}
+}

app/src/main/java/chess/view/DDDrender/Camera.java

@@ -1,23 +1,29 @@
 package chess.view.DDDrender;
 
 import org.joml.Matrix4f;
+import org.joml.Vector2f;
 import org.joml.Vector3f;
+import org.joml.Vector4f;
 
 public class Camera {
     public static final float fov = 70.0f;
-    // should be changed to match screen
-    public static final float aspect = 1.0f;
     public static final float zNear = 0.01f;
-    public static final float zFar = 100.0f;
+    public static final float zFar = 1000.0f;
+
+    private static final Vector3f up = new Vector3f(0.0f, -1.0f, 0.0f);
+    private static final Vector3f center = new Vector3f(0.0f, 0.0f, 0.0f);
+
+    private final float distance = 1.5f;
+    private final float camHeight = 1.5f;
+
+    private float aspectRatio;
+    private float angle;
 
     private Vector3f pos;
 
-    private float yaw = 0.0f;
-    private float pitch = 0.0f;
-
     public Camera() {
-        this.pos = new Vector3f(0, 2.0f, 0);
+        this.pos = new Vector3f(0.0f, camHeight, 0.0f);
-        setRotation(0.0f, -3.14150f / 2.0f);
+        setRotateAngle(0.0f);
     }
 
     public void move(float x, float y) {
@@ -25,104 +31,56 @@ public class Camera {
         this.pos.y += y;
     }
 
-    public void rotate(float yaw, float pitch) {
+    public void setRotateAngle(float angle) {
-        this.yaw += yaw;
+        this.angle = angle;
-        this.pitch += pitch;
+        updatePostion();
+    }
+
+    private void updatePostion() {
+        final float finalX = (float) Math.sin(angle);
+        final float finalZ = (float) -Math.cos(angle);
+        this.pos.set(distance * finalX, this.pos.get(1), distance * finalZ);
+    }
+
+    public float getRotateAngle() {
+        return angle;
     }
 
     public Vector3f getPos() {
         return pos;
     }
 
-    public float getYaw() {
-        return yaw;
-    }
-
-    public float getPitch() {
-        return pitch;
-    }
-
     public float getFov() {
         return fov;
     }
 
-    public void setX(float x) {
+    public void setAspectRatio(float aspectRatio) {
-        this.pos.x = x;
+        this.aspectRatio = aspectRatio;
     }
 
-    public void setY(float y) {
+    public Matrix4f getPerspectiveMatrix() {
-        this.pos.y = y;
+        return new Matrix4f().perspective((float) (Math.toRadians(fov)), aspectRatio, zNear, zFar);
     }
 
-    public void setZ(float z) {
+    public Matrix4f getViewMatrix() {
-        this.pos.z = z;
+        return new Matrix4f().lookAt(pos, center, up);
     }
 
-    public void setYaw(float yaw) {
+    public Vector2f getCursorWorldFloorPos(Vector2f screenPos, int windowWidth, int windowHeight) {
-        this.yaw = yaw;
+        float relativeX = (screenPos.x / (float) windowWidth * 2.0f) - 1.0f;
-    }
+        float relativeY = 1.0f - (screenPos.y / (float) windowHeight * 2.0f);
 
-    public void setPitch(float pitch) {
+        Vector4f rayClip = new Vector4f(relativeX, relativeY, -1.0f, 1.0f);
-        this.pitch = pitch;
-    }
 
-    public void reset() {
+        Vector4f rayEye = getPerspectiveMatrix().invert().transform(rayClip);
-        resetPosition();
-        resetRotation();
-    }
 
-    public void resetPosition() {
+        rayEye = new Vector4f(rayEye.x, rayEye.y, -1.0f, 0.0f);
-        pos = new Vector3f(0.0f, 0.0f, 0.0f);
-    }
 
-    public void resetRotation() {
+        Vector4f rayWorld = getViewMatrix().invert().transform(rayEye);
-        yaw = 0.0f;
-        pitch = 0.0f;
-    }
 
-    public void moveForward(float distance) {
+        float lambda = -this.pos.y / rayWorld.y;
-        pos.x += distance * (float) Math.cos(yaw);
-        pos.y += distance * (float) Math.sin(yaw);
-    }
 
-    public void moveRight(float distance) {
+        return new Vector2f(lambda * rayWorld.x + this.pos.x, lambda *
-        pos.x += distance * (float) Math.cos(yaw);
+                rayWorld.z + this.pos.z);
-        pos.y += distance * (float) Math.sin(yaw);
-    }
-
-    public void moveUp(float distance) {
-        pos.z += distance;
-    }
-
-    public void moveDown(float distance) {
-        pos.z -= distance;
-    }
-
-    public void addYaw(float angle) {
-        yaw += angle;
-    }
-
-    public void addPitch(float angle) {
-        pitch += angle;
-    }
-
-    public void setPosition(Vector3f pos) {
-        this.pos = pos;
-    }
-
-    public void setRotation(float yaw, float pitch) {
-        this.yaw = yaw;
-        this.pitch = pitch;
-    }
-
-    public Matrix4f getMatrix() {
-        Vector3f forward = new Vector3f(
-                (float) (Math.cos(yaw) * Math.cos(pitch)),
-                (float) (Math.sin(pitch)),
-                (float) (Math.sin(yaw) * Math.cos(pitch)));
-
-        return new Matrix4f()
-                .perspective((float) (Math.toRadians(fov)), aspect, zNear, zFar)
-                .lookAt(pos, forward, new Vector3f(0.0f, 1.0f, 0.0f));
     }
 }

app/src/main/java/chess/view/DDDrender/DDDModel.java

@@ -0,0 +1,27 @@
+package chess.view.DDDrender;
+
+import java.io.Closeable;
+import java.io.IOException;
+import java.util.List;
+
+import chess.view.DDDrender.opengl.VertexArray;
+
+public class DDDModel implements Closeable {
+	private final List<VertexArray> vaos;
+
+	public DDDModel(List<VertexArray> vaos) {
+		this.vaos = vaos;
+	}
+
+	public List<VertexArray> getVaos() {
+		return vaos;
+	}
+
+	@Override
+	public void close() throws IOException {
+		for (VertexArray vertexArray : vaos) {
+			vertexArray.close();
+		}
+	}
+
+}

app/src/main/java/chess/view/DDDrender/DDDPlacement.java

@@ -0,0 +1,21 @@
+package chess.view.DDDrender;
+
+import org.joml.Vector2f;
+
+import chess.model.Coordinate;
+
+class DDDPlacement {
+	public static Vector2f coordinatesToVector(Coordinate coo) {
+		return coordinatesToVector(coo.getX(), coo.getY());
+	}
+
+	public static Vector2f coordinatesToVector(float x, float y) {
+		return new Vector2f(1.0f - 0.125f - x * 0.250f, 1.0f - 0.125f - y * 0.250f);
+	}
+
+	public static Coordinate vectorToCoordinates(Vector2f pos) {
+		int x = (int) ((1.0f - pos.x) * 4.0f);
+		int y = (int) ((1.0f - pos.y) * 4.0f);
+		return new Coordinate(x, y);
+	}
+}

app/src/main/java/chess/view/DDDrender/DDDView.java

@@ -0,0 +1,401 @@
+package chess.view.DDDrender;
+
+import java.io.IOException;
+import java.util.List;
+import java.util.function.Consumer;
+import java.util.function.Function;
+
+import chess.controller.commands.*;
+import imgui.ImGui;
+import imgui.type.ImBoolean;
+import org.joml.Vector2f;
+import org.joml.Vector3f;
+
+import chess.controller.Command.CommandResult;
+import chess.controller.CommandExecutor;
+import chess.controller.CommandSender;
+import chess.controller.event.GameAdapter;
+import chess.model.Color;
+import chess.model.Coordinate;
+import chess.model.Move;
+import chess.model.Piece;
+import chess.view.DDDrender.world.BoardEntity;
+import chess.view.DDDrender.world.PieceEntity;
+import chess.view.DDDrender.world.World;
+
+public class DDDView extends GameAdapter implements CommandSender {
+
+    private static final Vector3f BLACK = new Vector3f(0.3f, 0.3f, 0.3f);
+    private static final Vector3f WHITE = new Vector3f(1.0f, 1.0f, 1.0f);
+    private static final Vector3f RED = new Vector3f(1.0f, 0.0f, 0.0f);
+    private static final Vector3f YELLOW = new Vector3f(1.0f, 1.0f, 0.0f);
+
+    private final CommandExecutor commandExecutor;
+    private final Window window;
+    private final World world;
+    private BoardEntity boardEntity;
+    private final Camera camera;
+    private Coordinate click = null;
+
+    private static final float animationTime = 1.5f; // in seconds
+    private static final int animationTurns = 1;
+
+    private float moveProgress = 0.0f;
+
+    private String waitingPopup = null;
+    private final ImBoolean popupOpened = new ImBoolean(false);
+
+    public DDDView(CommandExecutor commandExecutor) {
+        this.commandExecutor = commandExecutor;
+        this.world = new World();
+        this.camera = new Camera();
+        this.window = new Window(new Renderer(), this.world, this.camera);
+    }
+
+    @Override
+    public CommandExecutor getCommandExecutor() {
+        return this.commandExecutor;
+    }
+
+    private void cancelClick() {
+        this.click = null;
+    }
+
+    private void setClick(Coordinate coordinate) {
+        this.click = coordinate;
+    }
+
+    // Invoked when a cell is clicked
+    private void onCellClick(Coordinate coordinate) {
+        if (this.click == null) { // case: first click
+            List<Coordinate> allowedMoves = getPieceAllowedMoves(coordinate);
+            if (allowedMoves.isEmpty()) { // case: no movement possible for piece
+                System.out.println("This piece cannot be moved at the moment.");
+                return;
+            }
+            setClick(coordinate);
+            previewMoves(coordinate);
+            System.out.println("First click on " + coordinate);
+            return;
+        }
+        // case: second click
+        GetAllowedMovesPieceCommand movesCommand = new GetAllowedMovesPieceCommand(this.click);
+        if (sendCommand(movesCommand) == CommandResult.NotAllowed) { // case: invalid piece to move
+            cancelPreview(this.click);
+            System.out.println("Nothing to do here.");
+            cancelClick();
+            return;
+        }
+        List<Coordinate> allowedMoves = movesCommand.getDestinations();
+        if (allowedMoves.isEmpty()) { // case: no movement possible for piece
+            cancelPreview(this.click);
+            System.out.println("This piece cannot be moved at the moment.");
+            cancelClick();
+            return;
+        }
+        if (allowedMoves.contains(coordinate)) { // case: valid attempt to move
+            System.out.println("Move on " + coordinate);
+            cancelPreview(this.click);
+            sendMove(new Move(click, coordinate));
+            cancelClick();
+            return;
+        }
+        if (!(coordinate == this.click)) {
+            System.out.println("New click on " + coordinate); // cases: invalid move, selecting another piece
+            cancelPreview(this.click);
+            previewMoves(coordinate);
+            setClick(coordinate);
+            return;
+        }
+        System.out.println("Cancelling click."); // case: cancelling previous click
+        cancelClick();
+    }
+
+    private void previewMoves(Coordinate coordinate) {
+        List<Coordinate> allowedMoves = getPieceAllowedMoves(coordinate);
+        if (allowedMoves.isEmpty())
+            return;
+        this.boardEntity.setCellColor(coordinate, RED);
+        this.world.getPiece(coordinate).setColor(RED);
+        for (Coordinate destCoord : allowedMoves) {
+            this.boardEntity.setCellColor(destCoord, YELLOW);
+        }
+    }
+
+    // Invoked when a cell is hovered
+    private void onCellEnter(Coordinate coordinate) {
+        if (this.click == null) {
+            // small test turning a cell red when hovered
+            this.boardEntity.setCellColor(coordinate, RED);
+            Piece p = pieceAt(coordinate);
+            if (p == null)
+                return;
+            this.world.getPiece(coordinate).setColor(RED);
+            List<Coordinate> allowedMoves = getPieceAllowedMoves(coordinate);
+            if (allowedMoves.isEmpty())
+                return;
+            for (Coordinate destCoord : allowedMoves) {
+                this.boardEntity.setCellColor(destCoord, RED);
+            }
+        }
+    }
+
+    // Invoked when a cell is not hovered anymore
+    private void onCellExit(Coordinate coordinate) {
+        if (this.click == null) {
+            this.boardEntity.resetCellColor(coordinate);
+            Piece p = pieceAt(coordinate);
+            if (p == null)
+                return;
+            PieceEntity pEntity = this.world.getPiece(coordinate);
+            if (pEntity == null)
+                return;
+
+            pEntity.setColor(p.getColor() == Color.White ? WHITE : BLACK);
+            List<Coordinate> allowedMoves = getPieceAllowedMoves(coordinate);
+            if (allowedMoves.isEmpty())
+                return;
+            for (Coordinate destCoord : allowedMoves) {
+                this.boardEntity.resetCellColor(destCoord);
+            }
+        }
+    }
+
+    private void cancelPreview(Coordinate coordinate) {
+        this.boardEntity.resetCellColor(coordinate);
+        Piece p = pieceAt(coordinate);
+        if (p == null)
+            return;
+        this.world.getPiece(coordinate).setColor(p.getColor() == Color.White ? WHITE : BLACK);
+        List<Coordinate> allowedMoves = getPieceAllowedMoves(coordinate);
+        if (allowedMoves.isEmpty())
+            return;
+        for (Coordinate destCoord : allowedMoves) {
+            this.boardEntity.resetCellColor(destCoord);
+        }
+    }
+
+    private Piece pieceAt(Coordinate pos) {
+        GetPieceAtCommand cmd = new GetPieceAtCommand(pos);
+        this.commandExecutor.executeCommand(cmd);
+        return cmd.getPiece();
+    }
+
+    @Override
+    public void onGameStart() {
+        this.window.scheduleTask(() -> {
+            try {
+                initBoard();
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+            // start listening to mouse events
+            this.window.OnCellClick.connect(this::onCellClick);
+            this.window.OnCellEnter.connect(this::onCellEnter);
+            this.window.OnCellExit.connect(this::onCellExit);
+            this.window.OnImGuiTopRender.connect(this::onHeaderRender);
+            this.window.OnImGuiBottomRender.connect(this::onFooterRender);
+        });
+    }
+
+    private void onHeaderRender() {
+        ImGui.text("FPS : " + (int) ImGui.getIO().getFramerate());
+    }
+
+    private void onFooterRender() {
+        if (ImGui.button("Roque")) {
+            sendCastling();
+        }
+        ImGui.sameLine();
+        if (ImGui.button("Grand Roque")) {
+            sendBigCastling();
+        }
+        ImGui.sameLine();
+        if (ImGui.button("Annuler le coup précédent")) {
+            sendUndo();
+        }
+        openPopup();
+        renderPopups();
+    }
+
+    private void openPopup() {
+        if (waitingPopup != null) {
+            ImGui.openPopup(waitingPopup);
+            waitingPopup = null;
+        }
+    }
+
+    private void initBoard() throws IOException {
+        for (int i = 0; i < Coordinate.VALUE_MAX; i++) {
+            for (int j = 0; j < Coordinate.VALUE_MAX; j++) {
+                Coordinate pos = new Coordinate(i, j);
+                Piece piece = pieceAt(pos);
+                if (piece == null)
+                    continue;
+
+                Vector2f pieceBoardPos = DDDPlacement.coordinatesToVector(pos);
+                Vector3f pieceWorldPos = new Vector3f(pieceBoardPos.x(), 0, pieceBoardPos.y());
+
+                PieceEntity entity = new PieceEntity(piece, pieceWorldPos,
+                        piece.getColor() == Color.White ? WHITE : BLACK,
+                        piece.getColor() == Color.White ? 0.0f : (float) Math.PI);
+
+                this.world.addPiece(entity, pos);
+            }
+        }
+        this.boardEntity = new BoardEntity();
+        this.world.addEntity(this.boardEntity);
+    }
+
+    /**
+     * @param begin  begin
+     * @param middle control point
+     * @param end    end
+     * @param t      between 0 and 1
+     * @return the point
+     */
+    private Vector3f bezierCurve(Vector3f begin, Vector3f middle, Vector3f end, float t) {
+        return begin.mul((1.0f - t) * (1.0f - t)).add(middle.mul(2.0f * t * (1.0f - t))).add(end.mul(t * t));
+    }
+
+    private Function<Float, Float> lagrangeInterpolation(Vector3f begin, Vector3f middle, Vector3f end) {
+        return (t) -> {
+            return t + 1.0f;
+        };
+    }
+
+    private void pieceTick(float progress, PieceEntity piece, Move move) {
+        float height = 1; // how much the piece is raised
+        Vector2f pieceStartBoard = DDDPlacement.coordinatesToVector(move.getStart());
+        Vector2f pieceDestinationBoard = DDDPlacement.coordinatesToVector(move.getFinish());
+        Vector3f start = new Vector3f(pieceStartBoard.x(), 0, pieceStartBoard.y());
+        Vector3f top = new Vector3f(pieceDestinationBoard.x() - pieceStartBoard.x(), height,
+                pieceDestinationBoard.y() - pieceStartBoard.y());
+        Vector3f end = new Vector3f(pieceDestinationBoard.x(), 0, pieceDestinationBoard.y());
+
+        piece.setPosition(bezierCurve(start, top, end, progress));
+    }
+
+    private void move3DPiece(Move move) {
+        Vector2f pieceDestBoardPos = DDDPlacement.coordinatesToVector(move.getFinish());
+        Vector3f pieceDestWorldPos = new Vector3f(pieceDestBoardPos.x(), 0, pieceDestBoardPos.y());
+
+        final PieceEntity pEntity = this.world.getPiece(move.getStart());
+        final Move pMove = move;
+
+        this.moveProgress = 0.0f;
+
+        Consumer<Float> moveConsumer = (delta) -> {
+            this.moveProgress += delta;
+            pieceTick(this.moveProgress, pEntity, pMove);
+        };
+
+        this.window.addRegularTask(moveConsumer);
+
+        try {
+            Thread.sleep(1000);
+        } catch (InterruptedException e) {
+        }
+        this.window.removeRegularTask(moveConsumer);
+
+        if (move.getDeadPieceCoords() != null) {
+            this.world.ejectPiece(move.getDeadPieceCoords());
+        }
+        pEntity.setPosition(pieceDestWorldPos);
+
+        this.world.movePiece(pEntity, move);
+    }
+
+    @Override
+    public void onMove(Move move, boolean captured) {
+        move3DPiece(move);
+        cameraRotate();
+    }
+
+    private void cameraTick(float delta) {
+        int oddAnimationTurn = (2 * (animationTurns - 1)) + 1;
+        final float angle = (float) Math.PI;
+        this.camera.setRotateAngle(this.camera.getRotateAngle() + angle * delta * oddAnimationTurn / animationTime);
+    }
+
+    private void cameraRotate() {
+        float end = this.camera.getRotateAngle() + (float) Math.PI;
+        Consumer<Float> rotationConsumer = this::cameraTick;
+        this.window.addRegularTask(rotationConsumer);
+        try {
+            Thread.sleep((long) (animationTime * 1000));
+        } catch (InterruptedException e) {
+            throw new RuntimeException(e);
+        }
+        this.window.removeRegularTask(rotationConsumer);
+        this.camera.setRotateAngle(end);
+    }
+
+    public void run() {
+        this.window.run();
+
+        // free OpenGL resources
+        try {
+            this.window.close();
+            this.world.close();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    private void renderPopup(String title, String text) {
+        if (ImGui.beginPopupModal(title, popupOpened)) {
+            ImGui.text(text);
+            ImGui.endPopup();
+        }
+    }
+
+    private void renderPopups() {
+        renderPopup("Check", "Your king is in check");
+        renderPopup("Checkmate", "Checkmate, it's a win!");
+        renderPopup("Promotion", "Please promote your pawn.");
+        renderPopup("Pat", "It's a pat!");
+        renderPopup("Tie", "It's a tie!");
+        renderPopup("White surrender", "The white player has surrendered!");
+        renderPopup("Black surrender", "The black player has surrendered!");
+        renderPopup("White victory", "The white player has won !");
+        renderPopup("Black victory", "The black player has won !");
+        renderPopup("End", "End of the game, thank you for playing!");
+    }
+
+    private void openPopup(String title) {
+        this.popupOpened.set(true);
+        this.waitingPopup = title;
+    }
+
+    @Override
+    public void onKingInCheck() {
+        openPopup("Check");
+    }
+
+    @Override
+    public void onDraw() {
+        openPopup("Tie");
+    }
+
+    @Override
+    public void onKingInMat() {
+        openPopup("Checkmate");
+    }
+
+    @Override
+    public void onGameEnd() {
+        openPopup("End");
+    }
+
+    @Override
+    public void onPatSituation() {
+        openPopup("Pat");
+    }
+
+    @Override
+    public void onSurrender(Color color) {
+        openPopup(color == Color.White ? "White surrender" : "Black surrender");
+        openPopup(color == Color.White ? "Black victory" : "White victory");
+    }
+}

app/src/main/java/chess/view/DDDrender/Renderer.java

@@ -2,123 +2,75 @@ package chess.view.DDDrender;
 
 import static org.lwjgl.opengl.GL11.GL_UNSIGNED_INT;
 
+import java.io.Closeable;
+import java.io.IOException;
+
+import org.joml.Matrix4f;
 import org.joml.Vector3f;
 import org.lwjgl.opengl.GL30;
 
+import chess.view.DDDrender.opengl.FrameBuffer;
+import chess.view.DDDrender.opengl.VertexArray;
 import chess.view.DDDrender.shader.BoardShader;
+import chess.view.DDDrender.shader.PieceShader;
+import chess.view.DDDrender.shader.ShaderProgram;
 
-public class Renderer {
+public class Renderer implements Closeable {
-	private BoardShader shader;
+	private BoardShader boardShader;
-	private VertexArray vao;
+	private PieceShader pieceShader;
-
+	private FrameBuffer frameBuffer;
-	private static int BOARD_WIDTH = 8;
-	private static int BOARD_HEIGHT = 8;
-	private static int BOARD_SIZE = BOARD_WIDTH * BOARD_HEIGHT;
-	private static int SQUARE_VERTEX_COUNT = 4;
 
 	public Renderer() {
-		this.shader = new BoardShader();
+		this.boardShader = new BoardShader();
+		this.pieceShader = new PieceShader();
 	}
 
-	public void Init() {
+	public void Init(float windowWidth, float widowHeight) {
-		shader.LoadShader();
+		boardShader.LoadShader();
-		InitBoard();
+		pieceShader.LoadShader();
+
+		this.frameBuffer = new FrameBuffer((int) windowWidth, (int) (widowHeight * 8.0f / 10.0f));
 	}
 
-	private float[] GetBoardPositions() {
+	public void Update(Camera cam) {
-		float[] positions = new float[BOARD_SIZE * SQUARE_VERTEX_COUNT * 3];
+		this.boardShader.Start();
-		for (int i = 0; i < BOARD_WIDTH; i++) {
+		this.boardShader.SetCamMatrix(cam);
-			for (int j = 0; j < BOARD_HEIGHT; j++) {
+		this.pieceShader.Start();
-				float x = i / (float) BOARD_WIDTH;
+		this.pieceShader.SetCamMatrix(cam);
-				float dx = (i + 1) / (float) BOARD_WIDTH;
+	}
-				float z = j / (float) BOARD_HEIGHT;
-				float dz = (j + 1) / (float) BOARD_HEIGHT;
 
-				float trueX = 2 * x - 1;
+	public void Render(DDDModel model, Vector3f color, Matrix4f transform) {
-				float trueZ = 2 * z - 1;
+		this.pieceShader.Start();
-				float trueDX = 2 * dx - 1;
+		this.pieceShader.setModelColor(color);
-				float trueDZ = 2 * dz - 1;
+		this.pieceShader.setModelTransform(transform);
+		Render(model);
+	}
 
-				positions[(BOARD_WIDTH * i + j) * SQUARE_VERTEX_COUNT * 3] = trueX;
+	public void Render(DDDModel model) {
-				positions[(BOARD_WIDTH * i + j) * SQUARE_VERTEX_COUNT * 3 + 1] = 0.0f;
+		for (int i = 0; i < model.getVaos().size(); i++) {
-				positions[(BOARD_WIDTH * i + j) * SQUARE_VERTEX_COUNT * 3 + 2] = trueZ;
+			VertexArray vao = model.getVaos().get(i);
-
+			RenderVao(this.pieceShader, vao);
-				positions[(BOARD_WIDTH * i + j) * SQUARE_VERTEX_COUNT * 3 + 3] = trueDX;
-				positions[(BOARD_WIDTH * i + j) * SQUARE_VERTEX_COUNT * 3 + 4] = 0.0f;
-				positions[(BOARD_WIDTH * i + j) * SQUARE_VERTEX_COUNT * 3 + 5] = trueZ;
-
-				positions[(BOARD_WIDTH * i + j) * SQUARE_VERTEX_COUNT * 3 + 6] = trueX;
-				positions[(BOARD_WIDTH * i + j) * SQUARE_VERTEX_COUNT * 3 + 7] = 0.0f;
-				positions[(BOARD_WIDTH * i + j) * SQUARE_VERTEX_COUNT * 3 + 8] = trueDZ;
-
-				positions[(BOARD_WIDTH * i + j) * SQUARE_VERTEX_COUNT * 3 + 9] = trueDX;
-				positions[(BOARD_WIDTH * i + j) * SQUARE_VERTEX_COUNT * 3 + 10] = 0.0f;
-				positions[(BOARD_WIDTH * i + j) * SQUARE_VERTEX_COUNT * 3 + 11] = trueDZ;
-			}
 		}
-		return positions;
 	}
 
-	private float[] GetBoardColors() {
+	public void RenderVao(ShaderProgram shader, VertexArray vertexArray) {
-		float[] colors = new float[BOARD_SIZE * SQUARE_VERTEX_COUNT * 3];
+		shader.Start();
-		for (int i = 0; i < BOARD_WIDTH; i++) {
-			for (int j = 0; j < BOARD_HEIGHT; j++) {
-				Vector3f color;
-				if ((i + j) % 2 != 0) {
-					color = new Vector3f(1.0f, 1.0f, 1.0f);
-				} else {
-					color = new Vector3f(0.0f, 0.0f, 0.0f);
-				}
-				int squareIndex = i * BOARD_WIDTH + j;
-				for (int k = 0; k < SQUARE_VERTEX_COUNT; k++) {
-					colors[squareIndex * SQUARE_VERTEX_COUNT * 3 + k * 3] = color.x;
-					colors[squareIndex * SQUARE_VERTEX_COUNT * 3 + k * 3 + 1] = color.y;
-					colors[squareIndex * SQUARE_VERTEX_COUNT * 3 + k * 3 + 2] = color.z;
-				}
-			}
-		}
-		return colors;
-	}
-
-	private int[] GetBoardIndicies() {
-		int[] indices = new int[BOARD_SIZE * 6];
-		for (int i = 0; i < BOARD_SIZE; i++) {
-			indices[i * 6] = i * 4;
-			indices[i * 6 + 1] = i * 4 + 1;
-			indices[i * 6 + 2] = i * 4 + 2;
-			indices[i * 6 + 3] = i * 4 + 1;
-			indices[i * 6 + 4] = i * 4 + 2;
-			indices[i * 6 + 5] = i * 4 + 3;
-		}
-		return indices;
-	}
-
-	private void InitBoard() {
-		ElementBuffer eBuffer = new ElementBuffer(GetBoardIndicies());
-		this.vao = new VertexArray(eBuffer);
-
-		VertexBuffer positionBuffer = new VertexBuffer(GetBoardPositions(), 3);
-		positionBuffer.AddVertexAttribPointer(0, 3, 0);
-
-		VertexBuffer colorBuffer = new VertexBuffer(GetBoardColors(), 3);
-		colorBuffer.AddVertexAttribPointer(1, 3, 0);
-
-		this.vao.Bind();
-		this.vao.BindVertexBuffer(positionBuffer);
-		this.vao.BindVertexBuffer(colorBuffer);
-		this.vao.Unbind();
-	}
-
-	public void Render(Camera cam) {
-		this.shader.Start();
-		this.shader.SetCamMatrix(cam.getMatrix());
-		RenderVao(vao);
-	}
-
-	public void RenderVao(VertexArray vertexArray) {
-		this.shader.Start();
 		vertexArray.Bind();
 		GL30.glDrawElements(GL30.GL_TRIANGLES, vertexArray.GetVertexCount(), GL_UNSIGNED_INT, 0);
 		vertexArray.Unbind();
 	}
+
+	public FrameBuffer getFrameBuffer() {
+		return frameBuffer;
+	}
+
+	public BoardShader getBoardShader() {
+		return boardShader;
+	}
+
+	@Override
+	public void close() throws IOException {
+		this.boardShader.close();
+		this.pieceShader.close();
+	}
 }

app/src/main/java/chess/view/DDDrender/Window.java

@@ -1,11 +1,35 @@
 package chess.view.DDDrender;
 
+import common.AssetManager;
+import common.Signal0;
+import org.joml.Vector2f;
 import org.lwjgl.*;
 import org.lwjgl.glfw.*;
 import org.lwjgl.opengl.*;
 import org.lwjgl.system.*;
 
+import chess.model.Coordinate;
+import chess.view.DDDrender.opengl.FrameBuffer;
+import chess.view.DDDrender.world.Entity;
+import chess.view.DDDrender.world.World;
+import common.Signal1;
+import imgui.ImFontConfig;
+import imgui.ImGui;
+import imgui.ImVec2;
+import imgui.flag.ImGuiWindowFlags;
+import imgui.gl3.ImGuiImplGl3;
+import imgui.glfw.ImGuiImplGlfw;
+import imgui.type.ImBoolean;
+import imgui.type.ImInt;
+
+import java.io.Closeable;
+import java.io.IOException;
 import java.nio.*;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Queue;
+import java.util.concurrent.ConcurrentLinkedDeque;
+import java.util.function.Consumer;
 
 import static org.lwjgl.glfw.Callbacks.*;
 import static org.lwjgl.glfw.GLFW.*;
@@ -13,21 +37,53 @@ import static org.lwjgl.opengl.GL11.*;
 import static org.lwjgl.system.MemoryStack.*;
 import static org.lwjgl.system.MemoryUtil.*;
 
-public class Window {
+public class Window implements Closeable {
 
 	// The window handle
 	private long window;
 
-	private Renderer renderer;
+	private final ImGuiImplGl3 implGl3 = new ImGuiImplGl3();
-	private Camera cam;
+	private final ImGuiImplGlfw implGlfw = new ImGuiImplGlfw();
 
-	public Window() {
+	private Renderer renderer;
+	private final Camera cam;
+	private final World world;
+
+	private final Queue<Runnable> tasks;
+	private final List<Consumer<Float>> regularTasks;
+
+	private Coordinate lastCell = null;
+
+	public final Signal1<Coordinate> OnCellClick = new Signal1<>();
+	public final Signal1<Coordinate> OnCellEnter = new Signal1<>();
+	public final Signal1<Coordinate> OnCellExit = new Signal1<>();
+
+	public final Signal0 OnImGuiTopRender = new Signal0();
+	public final Signal0 OnImGuiBottomRender = new Signal0();
+
+	private ImInt detailLevel = new ImInt(10);
+	private ImBoolean pixelatedFrame = new ImBoolean(true);
+
+	public Window(Renderer renderer, World world, Camera camera) {
 		this.renderer = new Renderer();
-		this.cam = new Camera();
+		this.cam = camera;
+		this.tasks = new ConcurrentLinkedDeque<>();
+		this.world = world;
+		this.regularTasks = new ArrayList<>();
 	}
 
-	public static void main(String[] args) {
+	public void addRegularTask(Consumer<Float> task) {
-		new Window().run();
+		this.regularTasks.add(task);
+	}
+
+	public void removeRegularTask(Consumer<Float> task) {this.regularTasks.remove(task);}
+
+	public synchronized void scheduleTask(Runnable runnable) {
+		this.tasks.add(runnable);
+	}
+
+	public synchronized Runnable getNextTask() {
+		return this.tasks.poll();
 	}
 
 	public void run() {
@@ -43,6 +99,28 @@ public class Window {
 		// Terminate GLFW and free the error callback
 		glfwTerminate();
 		glfwSetErrorCallback(null).free();
+
+		implGl3.shutdown();
+		implGlfw.shutdown();
+
+		ImGui.destroyContext();
+	}
+
+	private void initImGui() {
+		ImGui.setCurrentContext(ImGui.createContext());
+
+		implGl3.init("#version 330");
+		implGlfw.init(window, true);
+
+		ImFontConfig config = new ImFontConfig();
+		config.setFontDataOwnedByAtlas(false);
+		try {
+			ImGui.getIO().getFonts().addFontFromMemoryTTF(AssetManager.getResource("fonts/comic.ttf").readAllBytes(),
+					50.0f, config);
+		} catch (IOException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		}
 	}
 
 	private void init() {
@@ -80,10 +158,19 @@ public class Window {
 					window,
 					(vidmode.width() - pWidth.get(0)) / 2,
 					(vidmode.height() - pHeight.get(0)) / 2);
+
+			glfwSetWindowSize(window, vidmode.width(), vidmode.height());
+			
+			// Make the OpenGL context current
+			glfwMakeContextCurrent(window);
+			
+			GL.createCapabilities();
+			
+			initImGui();
+			
+			renderer.Init(vidmode.width(), vidmode.height());
 		} // the stack frame is popped automatically
 
-		// Make the OpenGL context current
-		glfwMakeContextCurrent(window);
 		// Enable v-sync
 		glfwSwapInterval(1);
 
@@ -91,32 +178,117 @@ public class Window {
 		glfwShowWindow(window);
 	}
 
-	private void render() {
+	private void render(float delta, float aspectRatio) {
-		cam.rotate(0.01f, 0.01f);
+		final FrameBuffer frameBuffer = this.renderer.getFrameBuffer();
-		renderer.Render(cam);
+
+		cam.setAspectRatio(frameBuffer.getAspectRatio());
+		frameBuffer.Bind();
+		frameBuffer.Clear();
+		renderer.Update(cam);
+		renderWorld();
+		frameBuffer.Unbind();
+	}
+
+	private void renderWorld() {
+		for (Entity entity : this.world.getEntites()) {
+			entity.render(this.renderer);
+		}
+	}
+
+	private void executeTasks(float delta) {
+		Runnable task = getNextTask();
+		while (task != null) {
+			task.run();
+			task = getNextTask();
+		}
+		for (Consumer<Float> consumer : regularTasks) {
+			consumer.accept(delta);
+		}
+	}
+
+	private void checkCursor(float cursorPosX, float cursorPosY, int windowWidth, int windowHeight) {
+		Vector2f cursorPos = this.cam.getCursorWorldFloorPos(new Vector2f(cursorPosX, cursorPosY), windowWidth,
+				windowHeight);
+		Coordinate selectedCell = DDDPlacement.vectorToCoordinates(cursorPos);
+		if (this.lastCell == null) {
+			this.lastCell = selectedCell;
+			if (selectedCell.isValid())
+				this.OnCellEnter.emit(selectedCell);
+		} else if (!this.lastCell.equals(selectedCell)) {
+			if (this.lastCell.isValid())
+				this.OnCellExit.emit(this.lastCell);
+			if (selectedCell.isValid())
+				this.OnCellEnter.emit(selectedCell);
+			this.lastCell = selectedCell;
+		}
+
+		if (ImGui.getIO().getMouseClicked(0)) {
+			if (this.lastCell != null && this.lastCell.isValid())
+				this.OnCellClick.emit(this.lastCell);
+		}
+	}
+
+	private void newFrame() {
+		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // clear the framebuffer
+
+		implGlfw.newFrame();
+		implGl3.newFrame();
+		ImGui.newFrame();
+	}
+
+	private void renderWindow() {
+		ImGui.showDemoWindow();
+
+		final FrameBuffer frameBuffer = this.renderer.getFrameBuffer();
+		final int frameWidth = (int) ImGui.getIO().getDisplaySizeX();
+		final int frameHeight = (int) (ImGui.getIO().getDisplaySizeY() * 8.0f / 10.0f);
+
+		ImGui.setNextWindowSize(ImGui.getIO().getDisplaySize());
+		ImGui.setNextWindowPos(new ImVec2());
+		ImGui.begin("Main Window", ImGuiWindowFlags.NoDecoration);
+		this.OnImGuiTopRender.emit();
+		ImVec2 mousePos = ImGui.getIO().getMousePos();
+		ImVec2 framePos = ImGui.getCursorScreenPos();
+		checkCursor(mousePos.x - framePos.x, frameHeight - (mousePos.y - framePos.y), frameWidth, frameHeight);
+		ImGui.image(frameBuffer.getRenderTexture(), new ImVec2(frameWidth, frameHeight));
+		this.OnImGuiBottomRender.emit();
+		if(ImGui.sliderInt("Niveau de détail", detailLevel.getData(), 1, 10)){
+			frameBuffer.Resize((int) ((float) frameWidth * detailLevel.get() / 10.0f), (int) ((float) frameHeight * detailLevel.get() / 10.0f));
+		}
+		if (ImGui.checkbox("Minecraft", pixelatedFrame)) {
+			frameBuffer.SetPixelScaling(pixelatedFrame.get());
+		}
+		ImGui.end();
 	}
 
 	private void loop() {
-		// This line is critical for LWJGL's interoperation with GLFW's
-		// OpenGL context, or any context that is managed externally.
-		// LWJGL detects the context that is current in the current thread,
-		// creates the GLCapabilities instance and makes the OpenGL
-		// bindings available for use.
-		GL.createCapabilities();
-
-		renderer.Init();
 
 		// Set the clear color
-		glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
+		glClearColor(0.4f, 0.4f, 0.6f, 1.0f);
+
+		glEnable(GL_DEPTH_TEST);
+
+		glEnable(GL_CULL_FACE);
+		glCullFace(GL_FRONT);
+		glFrontFace(GL_CW);
 
 		glColor4f(1.0f, 0.0f, 0.0f, 1.0f);
 
+		int width[] = new int[1];
+		int height[] = new int[1];
+		glfwGetWindowSize(window, width, height);
+
 		// Run the rendering loop until the user has attempted to close
 		// the window or has pressed the ESCAPE key.
 		while (!glfwWindowShouldClose(window)) {
-			glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // clear the framebuffer
 
-			render();
+			newFrame();
+
+			render(ImGui.getIO().getDeltaTime(), (float) width[0] / (float) height[0]);
+
+			renderWindow();
+			ImGui.render();
+			implGl3.renderDrawData(ImGui.getDrawData());
 
 			glfwSwapBuffers(window); // swap the color buffers
 
@@ -124,16 +296,17 @@ public class Window {
 			// invoked during this call.
 			glfwPollEvents();
 
-			try (MemoryStack stack = stackPush()) {
+			executeTasks(ImGui.getIO().getDeltaTime());
-				IntBuffer pWidth = stack.mallocInt(1); // int*
-				IntBuffer pHeight = stack.mallocInt(1); // int*
 
-				// Get the window size passed to glfwCreateWindow
+			glfwGetWindowSize(window, width, height);
-				glfwGetWindowSize(window, pWidth, pHeight);
+			glViewport(0, 0, width[0], height[0]);
 
-				glViewport(0, 0, pWidth.get(), pHeight.get());
-			} // the stack frame is popped automatically
 		}
 	}
 
+	@Override
+	public void close() throws IOException {
+		this.renderer.close();
+	}
+
 }

app/src/main/java/chess/view/DDDrender/loader/BoardModelLoader.java

@@ -0,0 +1,98 @@
+package chess.view.DDDrender.loader;
+
+import org.joml.Vector3f;
+
+import chess.view.DDDrender.opengl.ElementBuffer;
+import chess.view.DDDrender.opengl.VertexArray;
+import chess.view.DDDrender.opengl.VertexBuffer;
+
+public class BoardModelLoader {
+
+	private static final int BOARD_WIDTH = 8;
+	private static final int BOARD_HEIGHT = 8;
+	private static final int BOARD_SIZE = BOARD_WIDTH * BOARD_HEIGHT;
+	private static final int SQUARE_VERTEX_COUNT = 4;
+
+	private static final Vector3f WHITE = new Vector3f(1, 1, 1);
+	private static final Vector3f BLACK = new Vector3f(0, 0, 0);
+	
+	private static float[] GetBoardPositions() {
+		float[] positions = new float[BOARD_SIZE * SQUARE_VERTEX_COUNT * 3];
+		for (int i = 0; i < BOARD_WIDTH; i++) {
+			for (int j = 0; j < BOARD_HEIGHT; j++) {
+				float x = i / (float) BOARD_WIDTH;
+				float dx = (i + 1) / (float) BOARD_WIDTH;
+				float z = j / (float) BOARD_HEIGHT;
+				float dz = (j + 1) / (float) BOARD_HEIGHT;
+
+				float trueX = 2 * x - 1;
+				float trueZ = 2 * z - 1;
+				float trueDX = 2 * dx - 1;
+				float trueDZ = 2 * dz - 1;
+
+				positions[(BOARD_WIDTH * i + j) * SQUARE_VERTEX_COUNT * 3] = trueX;
+				positions[(BOARD_WIDTH * i + j) * SQUARE_VERTEX_COUNT * 3 + 1] = 0.0f;
+				positions[(BOARD_WIDTH * i + j) * SQUARE_VERTEX_COUNT * 3 + 2] = trueZ;
+
+				positions[(BOARD_WIDTH * i + j) * SQUARE_VERTEX_COUNT * 3 + 3] = trueDX;
+				positions[(BOARD_WIDTH * i + j) * SQUARE_VERTEX_COUNT * 3 + 4] = 0.0f;
+				positions[(BOARD_WIDTH * i + j) * SQUARE_VERTEX_COUNT * 3 + 5] = trueZ;
+
+				positions[(BOARD_WIDTH * i + j) * SQUARE_VERTEX_COUNT * 3 + 6] = trueX;
+				positions[(BOARD_WIDTH * i + j) * SQUARE_VERTEX_COUNT * 3 + 7] = 0.0f;
+				positions[(BOARD_WIDTH * i + j) * SQUARE_VERTEX_COUNT * 3 + 8] = trueDZ;
+
+				positions[(BOARD_WIDTH * i + j) * SQUARE_VERTEX_COUNT * 3 + 9] = trueDX;
+				positions[(BOARD_WIDTH * i + j) * SQUARE_VERTEX_COUNT * 3 + 10] = 0.0f;
+				positions[(BOARD_WIDTH * i + j) * SQUARE_VERTEX_COUNT * 3 + 11] = trueDZ;
+			}
+		}
+		return positions;
+	}
+
+	private static float[] GetBoardColors() {
+		float[] colors = new float[BOARD_SIZE * SQUARE_VERTEX_COUNT * 3];
+		for (int i = 0; i < BOARD_WIDTH; i++) {
+			for (int j = 0; j < BOARD_HEIGHT; j++) {
+				Vector3f color = (i + j) % 2 == 0 ? WHITE : BLACK;
+				int squareIndex = i * BOARD_WIDTH + j;
+				for (int k = 0; k < SQUARE_VERTEX_COUNT; k++) {
+					colors[squareIndex * SQUARE_VERTEX_COUNT * 3 + k * 3] = color.x;
+					colors[squareIndex * SQUARE_VERTEX_COUNT * 3 + k * 3 + 1] = color.y;
+					colors[squareIndex * SQUARE_VERTEX_COUNT * 3 + k * 3 + 2] = color.z;
+				}
+			}
+		}
+		return colors;
+	}
+
+	private static int[] GetBoardIndicies() {
+		int[] indices = new int[BOARD_SIZE * 6];
+		for (int i = 0; i < BOARD_SIZE; i++) {
+			indices[i * 6] = i * 4;
+			indices[i * 6 + 1] = i * 4 + 2;
+			indices[i * 6 + 2] = i * 4 + 1;
+			indices[i * 6 + 3] = i * 4 + 1;
+			indices[i * 6 + 4] = i * 4 + 2;
+			indices[i * 6 + 5] = i * 4 + 3;
+		}
+		return indices;
+	}
+
+	public static VertexArray GetBoardModel() {
+		ElementBuffer eBuffer = new ElementBuffer(GetBoardIndicies());
+		VertexArray vao = new VertexArray(eBuffer);
+
+		VertexBuffer positionBuffer = new VertexBuffer(GetBoardPositions(), 3);
+		positionBuffer.AddVertexAttribPointer(0, 3, 0);
+
+		VertexBuffer colorBuffer = new VertexBuffer(GetBoardColors(), 3);
+		colorBuffer.AddVertexAttribPointer(1, 3, 0);
+
+		vao.Bind();
+		vao.BindVertexBuffer(positionBuffer);
+		vao.BindVertexBuffer(colorBuffer);
+		vao.Unbind();
+		return vao;
+	}
+}

app/src/main/java/chess/view/DDDrender/loader/ModelLoader.java

@@ -0,0 +1,130 @@
+package chess.view.DDDrender.loader;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.ByteBuffer;
+import java.nio.IntBuffer;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.lwjgl.assimp.AIFace.Buffer;
+import org.lwjgl.assimp.AIMesh;
+import org.lwjgl.assimp.AINode;
+import org.lwjgl.assimp.AIScene;
+import org.lwjgl.assimp.AIVector3D;
+import org.lwjgl.assimp.Assimp;
+import org.lwjgl.system.MemoryUtil;
+
+import chess.view.DDDrender.DDDModel;
+import chess.view.DDDrender.opengl.ElementBuffer;
+import chess.view.DDDrender.opengl.VertexArray;
+import chess.view.DDDrender.opengl.VertexBuffer;
+import common.AssetManager;
+
+public class ModelLoader {
+
+	private static final int VERTEX_SIZE = 3;
+	private static final int VERTEX_POSITION_INDEX = 0;
+	private static final int VERTEX_NORMAL_INDEX = 1;
+
+	private static float[] toFloatArray(List<Float> list) {
+		float[] result = new float[list.size()];
+		for (int i = 0; i < list.size(); i++) {
+			result[i] = list.get(i);
+		}
+		return result;
+	}
+
+	private static int[] toIntArray(List<Integer> list) {
+		int[] result = new int[list.size()];
+		for (int i = 0; i < list.size(); i++) {
+			result[i] = list.get(i);
+		}
+		return result;
+	}
+
+	private static VertexArray processMesh(AIMesh mesh, AIScene scene) {
+		List<Float> positions = new ArrayList<>();
+		List<Float> normals = new ArrayList<>();
+
+		List<Integer> indicies = new ArrayList<>();
+
+		Buffer faces = mesh.mFaces();
+		int faceNumber = mesh.mNumFaces();
+
+		for (int i = 0; i < faceNumber; i++) {
+			IntBuffer faceIndicies = faces.get(i).mIndices();
+			for (int j = 0; j < faceIndicies.capacity(); j++) {
+				indicies.add(faceIndicies.get(j));
+			}
+		}
+
+		int vertNumber = mesh.mNumVertices();
+		org.lwjgl.assimp.AIVector3D.Buffer vertecies = mesh.mVertices();
+		for (int i = 0; i < vertNumber; i++) {
+			AIVector3D vertex = vertecies.get(i);
+			positions.add(vertex.x());
+			positions.add(vertex.y());
+			positions.add(vertex.z());
+		}
+
+		org.lwjgl.assimp.AIVector3D.Buffer vertexNormals = mesh.mNormals();
+		for (int i = 0; i < vertNumber; i++) {
+			AIVector3D normal = vertexNormals.get(i);
+			normals.add(normal.x());
+			normals.add(normal.y());
+			normals.add(normal.z());
+		}
+
+		VertexBuffer positionVBO = new VertexBuffer(toFloatArray(positions), VERTEX_SIZE);
+		positionVBO.AddVertexAttribPointer(VERTEX_POSITION_INDEX, VERTEX_SIZE, 0);
+		VertexBuffer normalVBO = new VertexBuffer(toFloatArray(normals), VERTEX_SIZE);
+		normalVBO.AddVertexAttribPointer(VERTEX_NORMAL_INDEX, VERTEX_SIZE, 0);
+
+		VertexArray vao = new VertexArray(new ElementBuffer(toIntArray(indicies)));
+		vao.Bind();
+		vao.BindVertexBuffer(positionVBO);
+		vao.BindVertexBuffer(normalVBO);
+		vao.Unbind();
+		return vao;
+
+	}
+
+	private static void processNode(AINode node, AIScene scene, List<VertexArray> meshes) {
+		for (int i = 0; i < node.mNumChildren(); i++) {
+			AINode child = AINode.create(node.mChildren().get(i));
+			processNode(child, scene, meshes);
+		}
+		for (int i = 0; i < node.mNumMeshes(); i++) {
+			AIMesh mesh = AIMesh.create(scene.mMeshes().get(node.mMeshes().get(i)));
+			meshes.add(processMesh(mesh, scene));
+		}
+	}
+
+	public static DDDModel loadModel(String filename) throws IOException {
+		InputStream input = AssetManager.getResource(filename);
+		byte[] buffer = input.readAllBytes();
+		ByteBuffer data = MemoryUtil.memCalloc(buffer.length);
+		data.put(buffer);
+		data.flip();
+
+		AIScene scene = Assimp.aiImportFileFromMemory(
+				data,
+				Assimp.aiProcess_Triangulate | Assimp.aiProcess_PreTransformVertices | Assimp.aiProcess_GlobalScale
+						| Assimp.aiProcess_ValidateDataStructure,
+				"");
+
+		if (scene == null)
+			System.err.println(Assimp.aiGetErrorString());
+
+		List<VertexArray> vertecies = new ArrayList<>();
+
+		processNode(scene.mRootNode(), scene, vertecies);
+
+		MemoryUtil.memFree(data);
+
+		return new DDDModel(vertecies);
+
+	}
+
+}

app/src/main/java/chess/view/DDDrender/loader/Piece3DModel.java

@@ -0,0 +1,75 @@
+package chess.view.DDDrender.loader;
+
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
+
+import chess.model.Color;
+import chess.model.Piece;
+import chess.model.PieceVisitor;
+import chess.model.pieces.Bishop;
+import chess.model.pieces.King;
+import chess.model.pieces.Knight;
+import chess.model.pieces.Pawn;
+import chess.model.pieces.Queen;
+import chess.model.pieces.Rook;
+import chess.view.DDDrender.DDDModel;
+
+public class Piece3DModel implements PieceVisitor<String> {
+
+	private static final String basePath = "3d/";
+	private static final Map<String, DDDModel> cache = new HashMap<>();
+
+	public DDDModel getModel(Piece piece) throws IOException {
+		if (piece == null)
+			return null;
+
+		String path = basePath + colorToString(piece.getColor()) + "-" + visit(piece) + ".fbx";
+		return getModel(path);
+	}
+
+	private DDDModel getModel(String path) throws IOException {
+		DDDModel model = cache.get(path);
+		if (model != null)
+			return model;
+
+		model = ModelLoader.loadModel(path);
+		cache.put(path, model);
+		return model;
+	}
+
+	private String colorToString(Color color) {
+		return color == Color.Black ? "black" : "white";
+	}
+
+	@Override
+	public String visitPiece(Bishop bishop) {
+		return "bishop";
+	}
+
+	@Override
+	public String visitPiece(King king) {
+		return "king";
+	}
+
+	@Override
+	public String visitPiece(Knight knight) {
+		return "knight";
+	}
+
+	@Override
+	public String visitPiece(Pawn pawn) {
+		return "pawn";
+	}
+
+	@Override
+	public String visitPiece(Queen queen) {
+		return "queen";
+	}
+
+	@Override
+	public String visitPiece(Rook rook) {
+		return "rook";
+	}
+
+}

app/src/main/java/chess/view/DDDrender/opengl/ElementBuffer.java

@@ -0,0 +1,37 @@
+package chess.view.DDDrender.opengl;
+
+import java.io.Closeable;
+import java.io.IOException;
+
+import org.lwjgl.opengl.GL30;
+
+public class ElementBuffer implements Closeable {
+	private final int id;
+	private final int indiciesCount;
+
+	public ElementBuffer(int[] indicies) {
+		this.indiciesCount = indicies.length;
+		this.id = GL30.glGenBuffers();
+		Bind();
+		GL30.glBufferData(GL30.GL_ELEMENT_ARRAY_BUFFER, indicies.length * 4, GL30.GL_STATIC_DRAW);
+		GL30.glBufferSubData(GL30.GL_ELEMENT_ARRAY_BUFFER, 0, indicies);
+		Unbind();
+	}
+
+	public void Bind() {
+		GL30.glBindBuffer(GL30.GL_ELEMENT_ARRAY_BUFFER, this.id);
+	}
+
+	public void Unbind() {
+		GL30.glBindBuffer(GL30.GL_ELEMENT_ARRAY_BUFFER, 0);
+	}
+
+	public int GetIndiciesCount() {
+		return this.indiciesCount;
+	}
+
+	@Override
+	public void close() throws IOException {
+		GL30.glDeleteBuffers(this.id);
+	}
+}

app/src/main/java/chess/view/DDDrender/opengl/FrameBuffer.java

@@ -0,0 +1,106 @@
+package chess.view.DDDrender.opengl;
+
+import static org.lwjgl.opengl.GL11.GL_COLOR_BUFFER_BIT;
+import static org.lwjgl.opengl.GL11.GL_DEPTH_BUFFER_BIT;
+import static org.lwjgl.opengl.GL11.GL_DEPTH_COMPONENT;
+import static org.lwjgl.opengl.GL11.GL_RGB;
+import static org.lwjgl.opengl.GL11.GL_TEXTURE_2D;
+import static org.lwjgl.opengl.GL11.GL_UNSIGNED_BYTE;
+import static org.lwjgl.opengl.GL11.glBindTexture;
+import static org.lwjgl.opengl.GL11.glClear;
+import static org.lwjgl.opengl.GL11.glTexImage2D;
+import static org.lwjgl.opengl.GL11.glViewport;
+
+import org.lwjgl.opengl.GL30;
+
+public class FrameBuffer {
+
+	private int fbo;
+	private int renderTexture;
+	private int depthBuffer;
+
+	private int width;
+	private int height;
+
+	public FrameBuffer(int width, int height) {
+		this.width = width;
+		this.height = height;
+		
+		// The frame buffer
+		this.fbo = GL30.glGenFramebuffers();
+		GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, fbo);
+
+		// The texture
+		this.renderTexture = GL30.glGenTextures();
+		glBindTexture(GL_TEXTURE_2D, renderTexture);
+
+		glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, 0);
+
+		GL30.glTexParameteri(GL_TEXTURE_2D, GL30.GL_TEXTURE_MAG_FILTER, GL30.GL_NEAREST);
+		GL30.glTexParameteri(GL_TEXTURE_2D, GL30.GL_TEXTURE_MIN_FILTER, GL30.GL_NEAREST);
+
+		// The depth buffer
+		this.depthBuffer = GL30.glGenRenderbuffers();
+		GL30.glBindRenderbuffer(GL30.GL_RENDERBUFFER, depthBuffer);
+		GL30.glRenderbufferStorage(GL30.GL_RENDERBUFFER, GL_DEPTH_COMPONENT, width, height);
+		GL30.glFramebufferRenderbuffer(GL30.GL_FRAMEBUFFER, GL30.GL_DEPTH_ATTACHMENT, GL30.GL_RENDERBUFFER,
+				depthBuffer);
+
+		// Set "renderedTexture" as our colour attachement #0
+		GL30.glFramebufferTexture2D(GL30.GL_FRAMEBUFFER, GL30.GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, renderTexture, 0);
+		// Set the list of draw buffers.
+		int[] drawBuffers = { GL30.GL_COLOR_ATTACHMENT0 };
+		GL30.glDrawBuffers(drawBuffers);
+	}
+
+	public void Bind() {
+		GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, this.fbo);
+		glViewport(0, 0, this.width, this.height);
+	}
+
+	public void Unbind() {
+		GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, 0);
+	}
+
+	public void Clear() {
+		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // clear the framebuffer
+	}
+	
+	public void Resize(int width, int height) {
+		this.width = width;
+		this.height = height;
+
+		GL30.glBindTexture(GL_TEXTURE_2D, this.renderTexture);
+
+		glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, this.width, this.height, 0, GL_RGB, GL_UNSIGNED_BYTE, 0);
+
+		GL30.glBindRenderbuffer(GL30.GL_RENDERBUFFER, this.depthBuffer);
+		GL30.glRenderbufferStorage(GL30.GL_RENDERBUFFER, GL_DEPTH_COMPONENT, this.width, this.height);
+	}
+
+	public void SetPixelScaling(boolean pixelated) {
+		glBindTexture(GL_TEXTURE_2D, renderTexture);
+
+		int method = pixelated ? GL30.GL_NEAREST : GL30.GL_LINEAR;
+
+		GL30.glTexParameteri(GL_TEXTURE_2D, GL30.GL_TEXTURE_MAG_FILTER, method);
+		GL30.glTexParameteri(GL_TEXTURE_2D, GL30.GL_TEXTURE_MIN_FILTER, method);
+	}
+
+	public float getAspectRatio() {
+		return (float) width / (float) height;
+	}
+
+	public int getWidth() {
+		return width;
+	}
+
+	public int getHeight() {
+		return height;
+	}
+
+	public int getRenderTexture() {
+		return renderTexture;
+	}
+
+}

app/src/main/java/chess/view/DDDrender/opengl/VertexArray.java

@@ -0,0 +1,59 @@
+package chess.view.DDDrender.opengl;
+
+import java.io.Closeable;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.lwjgl.opengl.GL30;
+
+public class VertexArray implements Closeable {
+
+	private final int id;
+	private final ElementBuffer elementBuffer;
+	private final List<VertexBuffer> vertexBuffers;
+
+	public VertexArray(ElementBuffer elementBuffer) {
+		this.id = GL30.glGenVertexArrays();
+		this.elementBuffer = elementBuffer;
+		this.vertexBuffers = new ArrayList<VertexBuffer>();
+		Bind();
+		BindElementArrayBuffer();
+		Unbind();
+	}
+
+	public int GetVertexCount() {
+		return this.elementBuffer.GetIndiciesCount();
+	}
+
+	public void BindVertexBuffer(VertexBuffer buffer) {
+		buffer.Bind();
+		buffer.BindVertexAttribs();
+		this.vertexBuffers.add(buffer);
+	}
+
+	public void Bind() {
+		GL30.glBindVertexArray(this.id);
+	}
+
+	public void Unbind() {
+		GL30.glBindVertexArray(0);
+	}
+
+	private void BindElementArrayBuffer() {
+		this.elementBuffer.Bind();
+	}
+
+	public List<VertexBuffer> getVertexBuffers() {
+		return vertexBuffers;
+	}
+
+	@Override
+	public void close() throws IOException {
+		GL30.glDeleteBuffers(this.id);
+		for (VertexBuffer vertexBuffer : vertexBuffers) {
+			vertexBuffer.close();
+		}
+		elementBuffer.close();
+	}
+}

app/src/main/java/chess/view/DDDrender/opengl/VertexAttribPointer.java

@@ -0,0 +1,5 @@
+package chess.view.DDDrender.opengl;
+
+public record VertexAttribPointer(int index, int size, int offset) {
+	
+}

app/src/main/java/chess/view/DDDrender/opengl/VertexBuffer.java

@@ -0,0 +1,58 @@
+package chess.view.DDDrender.opengl;
+
+import static org.lwjgl.opengl.GL11.GL_FLOAT;
+
+import java.io.Closeable;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.lwjgl.opengl.GL30;
+
+public class VertexBuffer implements Closeable {
+	private final int id;
+	private final int dataStride;
+	private final List<VertexAttribPointer> vertexAttribs;
+
+	public VertexBuffer(float[] data, int stride) {
+		this.id = GL30.glGenBuffers();
+		this.dataStride = stride;
+		this.vertexAttribs = new ArrayList<VertexAttribPointer>();
+		Bind();
+		GL30.glBufferData(GL30.GL_ARRAY_BUFFER, data.length * 4, GL30.GL_STATIC_DRAW);
+		GL30.glBufferSubData(GL30.GL_ARRAY_BUFFER, 0, data);
+		Unbind();
+	}
+
+	public void UpdateData(int offset, float[] data) {
+		Bind();
+		GL30.glBufferSubData(GL30.GL_ARRAY_BUFFER, offset, data);
+		Unbind();
+	}
+
+	public void Bind() {
+		GL30.glBindBuffer(GL30.GL_ARRAY_BUFFER, this.id);
+	}
+
+	public void Unbind() {
+		GL30.glBindBuffer(GL30.GL_ARRAY_BUFFER, 0);
+	}
+
+	public void AddVertexAttribPointer(int index, int coordinateSize, int offset) {
+		VertexAttribPointer pointer = new VertexAttribPointer(index, coordinateSize, offset);
+		this.vertexAttribs.add(pointer);
+	}
+
+	public void BindVertexAttribs() {
+		for (VertexAttribPointer vertexAttribPointer : vertexAttribs) {
+			GL30.glEnableVertexAttribArray(vertexAttribPointer.index());
+			GL30.glVertexAttribPointer(vertexAttribPointer.index(), vertexAttribPointer.size(), GL_FLOAT, false,
+					this.dataStride * 4, vertexAttribPointer.offset());
+		}
+	}
+
+	@Override
+	public void close() throws IOException {
+		GL30.glDeleteBuffers(id);
+	}
+}

app/src/main/java/chess/view/DDDrender/shader/BoardShader.java

@@ -1,6 +1,6 @@
 package chess.view.DDDrender.shader;
 
-import org.joml.Matrix4f;
+import chess.view.DDDrender.Camera;
 
 public class BoardShader extends ShaderProgram {
 
@@ -10,14 +10,31 @@ public class BoardShader extends ShaderProgram {
 			layout(location = 0) in vec3 position;
 			layout(location = 1) in vec3 color;
 
-			uniform mat4 camMatrix;
+			uniform mat4 viewMatrix;
+			uniform mat4 projectionMatrix;
+			uniform vec3 lightPosition = vec3(0, 10, 0);
 
 			flat out vec3 pass_color;
 
+			out vec3 toLightVector;
+			out vec3 toCameraVector;
+			out vec3 surfaceNormal;
+
 			void main(void){
-				gl_Position = camMatrix * vec4(position, 1.0);
+				const vec4 normal = vec4(0.0, 1.0, 0.0, 1.0);
+
+				gl_Position = projectionMatrix * viewMatrix * vec4(position, 1.0);
+
+				vec3 camPos = (inverse(viewMatrix) * vec4(0.0, 0.0, 0.0, 1.0)).xyz;
+
+				toLightVector = lightPosition - position;
+
+				toCameraVector = camPos - position;
+				surfaceNormal = (normal).xyz;
+
 				pass_color = color;
 			}
+
 				""";
 
 	private static String fragmentShader = """
@@ -25,14 +42,44 @@ public class BoardShader extends ShaderProgram {
 
 			flat in vec3 pass_color;
 
-			out vec4 out_color;
+			in vec3 toLightVector;
+			in vec3 toCameraVector;
+			in vec3 surfaceNormal;
+
+			layout(location = 0) out vec4 out_color;
 
 			void main(void){
-				out_color = vec4(pass_color, 1.0);
+				const float shineDamper = 10.0;
+				const float reflectivity = 1.0;
+
+				float lightDistance = length(toLightVector);
+
+				const vec3 attenuation = vec3(0.2, 0.1, 0.0);
+				float attenuationFactor = attenuation.x + attenuation.y * lightDistance + attenuation.z * lightDistance * lightDistance;
+
+				vec3 unitNormal = normalize(surfaceNormal);
+				vec3 unitLightVector = normalize(toLightVector);
+				vec3 unitCamVector = normalize(toCameraVector);
+
+				vec3 lightDirection = -unitLightVector;
+				vec3 reflectedLightDirection = reflect(lightDirection, unitNormal);
+
+				float diffuse = max(0.2, dot(unitNormal, unitLightVector));
+
+				float specularFactor = max(0.0, dot(reflectedLightDirection, unitCamVector));
+				float specular = pow(specularFactor, shineDamper) * reflectivity;
+
+				float brightness = (diffuse + specular) / attenuationFactor;
+
+				out_color = brightness * vec4(pass_color, 1.0);
+				out_color.w = 1.0;
+
 			}
+
 				""";
 
-	private int location_CamMatrix = 0;
+	private int location_ProjectionMatrix = 0;
+	private int location_ViewMatrix = 0;
 
 	public BoardShader() {
 
@@ -44,10 +91,12 @@ public class BoardShader extends ShaderProgram {
 
 	@Override
 	protected void GetAllUniformLocation() {
-		location_CamMatrix = GetUniformLocation("camMatrix");
+		location_ProjectionMatrix = GetUniformLocation("projectionMatrix");
+		location_ViewMatrix = GetUniformLocation("viewMatrix");
 	}
 
-	public void SetCamMatrix(Matrix4f mat) {
+	public void SetCamMatrix(Camera camera) {
-		LoadMat4(location_CamMatrix, mat);
+		LoadMat4(location_ProjectionMatrix, camera.getPerspectiveMatrix());
+		LoadMat4(location_ViewMatrix, camera.getViewMatrix());
 	}
 }

app/src/main/java/chess/view/DDDrender/shader/PieceShader.java

@@ -0,0 +1,116 @@
+package chess.view.DDDrender.shader;
+
+import org.joml.Matrix4f;
+import org.joml.Vector3f;
+
+import chess.view.DDDrender.Camera;
+
+public class PieceShader extends ShaderProgram {
+
+	private static String vertexShader = """
+			#version 330
+
+			layout(location = 0) in vec3 position;
+			layout(location = 1) in vec3 normal;
+
+			uniform mat4 projectionMatrix;
+			uniform mat4 viewMatrix;
+			uniform mat4 modelTransform;
+			uniform vec3 lightPosition = vec3(0, 10, 0);
+
+			out vec3 toLightVector;
+			out vec3 toCameraVector;
+			out vec3 surfaceNormal;
+
+			void main(void){
+
+				vec4 modelPos = modelTransform * vec4(position, 1.0);
+				vec4 globalNormal = modelTransform * vec4(normal, 1.0);
+
+				gl_Position = projectionMatrix * viewMatrix * modelPos;
+
+				vec3 camPos = (inverse(viewMatrix) * vec4(0.0, 0.0, 0.0, 1.0)).xyz;
+
+				toLightVector = lightPosition - modelPos.xyz;
+
+				toCameraVector = camPos - position;
+				surfaceNormal = normalize(globalNormal.xyz);
+			}
+
+				""";
+
+	private static String fragmentShader = """
+			#version 330
+
+			in vec3 toLightVector;
+			in vec3 toCameraVector;
+			in vec3 surfaceNormal;
+
+			uniform vec3 modelColor;
+
+			layout(location = 0) out vec4 out_color;
+
+			void main(void){
+				const float shineDamper = 10.0;
+				const float reflectivity = 1.0;
+
+				float lightDistance = length(toLightVector);
+
+				const vec3 attenuation = vec3(0.2, 0.1, 0.0);
+				float attenuationFactor = attenuation.x + attenuation.y * lightDistance + attenuation.z * lightDistance * lightDistance;
+
+				vec3 unitNormal = normalize(surfaceNormal);
+				vec3 unitLightVector = normalize(toLightVector);
+				vec3 unitCamVector = normalize(toCameraVector);
+
+				vec3 lightDirection = -unitLightVector;
+				vec3 reflectedLightDirection = reflect(lightDirection, unitNormal);
+
+				float diffuse = max(0.2, dot(unitNormal, unitLightVector));
+
+				float specularFactor = max(0.0, dot(reflectedLightDirection, unitCamVector));
+				float specular = pow(specularFactor, shineDamper) * reflectivity;
+
+				float brightness = (diffuse + specular) / attenuationFactor;
+
+				out_color = brightness * vec4(modelColor, 1.0);
+				out_color.w = 1.0;
+
+			}
+
+				""";
+
+	private int location_ProjectionMatrix = 0;
+	private int location_ViewMatrix = 0;
+	private int location_ModelTransform = 0;
+	private int location_ModelColor = 0;
+
+	public PieceShader() {
+
+	}
+
+	public void LoadShader() {
+		super.LoadProgram(vertexShader, fragmentShader);
+	}
+
+	@Override
+	protected void GetAllUniformLocation() {
+		location_ProjectionMatrix = GetUniformLocation("projectionMatrix");
+		location_ViewMatrix = GetUniformLocation("viewMatrix");
+		location_ModelTransform = GetUniformLocation("modelTransform");
+		location_ModelColor = GetUniformLocation("modelColor");
+	}
+
+	public void SetCamMatrix(Camera camera) {
+		LoadMat4(location_ProjectionMatrix, camera.getPerspectiveMatrix());
+		LoadMat4(location_ViewMatrix, camera.getViewMatrix());
+	}
+
+	public void setModelTransform(Matrix4f mat) {
+		LoadMat4(location_ModelTransform, mat);
+	}
+
+	public void setModelColor(Vector3f color) {
+		LoadVector(location_ModelColor, color);
+	}
+}

app/src/main/java/chess/view/DDDrender/shader/ShaderProgram.java

@@ -1,5 +1,7 @@
 package chess.view.DDDrender.shader;
 
+import java.io.Closeable;
+import java.io.IOException;
 import java.nio.FloatBuffer;
 import java.nio.IntBuffer;
 
@@ -9,7 +11,7 @@ import org.lwjgl.BufferUtils;
 import org.lwjgl.opengl.GL30;
 import org.lwjgl.system.MemoryStack;
 
-public abstract class ShaderProgram {
+public abstract class ShaderProgram implements Closeable {
 	private int programId;
 	private int vertexShaderId;
 	private int fragmentShaderId;
@@ -56,8 +58,8 @@ public abstract class ShaderProgram {
 
 		if (compileSuccesful.get() != 1) {
 			System.out.println("Shader did not compile !");
+			System.err.println(GL30.glGetShaderInfoLog(shaderId));
 			return -1;
-
 		}
 
 		return shaderId;
@@ -68,7 +70,7 @@ public abstract class ShaderProgram {
 	protected int GetUniformLocation(String uniformName) {
 		int location = GL30.glGetUniformLocation(programId, uniformName);
 		if (location == -1) {
-			System.out.println("Uniform value not found !");
+			System.out.println("Uniform value \"" + uniformName + "\" not found !");
 		}
 		return location;
 	}
@@ -91,4 +93,11 @@ public abstract class ShaderProgram {
 			GL30.glUniformMatrix4fv(location, false, buffer);
 		}
 	}
+
+	@Override
+	public void close() throws IOException {
+		GL30.glDeleteShader(vertexShaderId);
+		GL30.glDeleteShader(fragmentShaderId);
+		GL30.glDeleteProgram(programId);
+	}
 }

app/src/main/java/chess/view/DDDrender/world/BoardEntity.java

@@ -0,0 +1,54 @@
+package chess.view.DDDrender.world;
+
+import java.io.IOException;
+
+import org.joml.Matrix4f;
+import org.joml.Vector3f;
+
+import chess.model.Coordinate;
+import chess.view.DDDrender.Renderer;
+import chess.view.DDDrender.loader.BoardModelLoader;
+import chess.view.DDDrender.opengl.VertexArray;
+import chess.view.DDDrender.opengl.VertexBuffer;
+
+public class BoardEntity extends Entity {
+
+	private final VertexArray vao;
+	private final VertexBuffer colorVbo;
+
+	private static final Vector3f WHITE = new Vector3f(1, 1, 1);
+	private static final Vector3f BLACK = new Vector3f(0, 0, 0);
+
+	public BoardEntity() {
+		this.vao = BoardModelLoader.GetBoardModel();
+		this.colorVbo = this.vao.getVertexBuffers().get(1);
+	}
+
+	public void setCellColor(Coordinate coord, Vector3f color) {
+		float[] data = { color.x, color.y, color.z, color.x, color.y, color.z, color.x, color.y, color.z, color.x,
+				color.y, color.z};
+		int cellNumber = (Coordinate.VALUE_MAX - 1 - coord.getX()) * Coordinate.VALUE_MAX + Coordinate.VALUE_MAX - 1 - coord.getY();
+		int offset = cellNumber * 4 * 4 * 3;
+		this.colorVbo.UpdateData(offset, data);
+	}
+
+	public void resetCellColor(Coordinate coord) {
+		setCellColor(coord, (coord.getX() + coord.getY()) % 2 == 0 ? WHITE : BLACK);
+	}
+
+	@Override
+	public void render(Renderer renderer) {
+		renderer.RenderVao(renderer.getBoardShader(), vao);
+	}
+
+	@Override
+	public void close() throws IOException {
+		vao.close();
+	}
+
+	@Override
+	public Matrix4f getTransform() {
+		return null;
+	}
+
+}

app/src/main/java/chess/view/DDDrender/world/Entity.java

@@ -0,0 +1,15 @@
+package chess.view.DDDrender.world;
+
+import java.io.Closeable;
+
+import org.joml.Matrix4f;
+
+import chess.view.DDDrender.Renderer;
+
+public abstract class Entity implements Closeable{
+
+	public abstract void render(Renderer renderer);
+
+	public abstract Matrix4f getTransform();
+
+}

app/src/main/java/chess/view/DDDrender/world/ModelEntity.java

@@ -0,0 +1,61 @@
+package chess.view.DDDrender.world;
+
+import java.io.IOException;
+
+import org.joml.Matrix4f;
+import org.joml.Vector3f;
+
+import chess.view.DDDrender.DDDModel;
+import chess.view.DDDrender.Renderer;
+
+public class ModelEntity extends Entity {
+
+	protected Vector3f position;
+	protected Vector3f color;
+	protected float rotation;
+	protected DDDModel model;
+
+	private Matrix4f transform;
+
+	public ModelEntity(DDDModel model, Vector3f position, Vector3f color, float rotation) {
+		this.position = position;
+		this.color = color;
+		this.rotation = rotation;
+		this.model = model;
+		updateTransform();
+	}
+
+	@Override
+	public void render(Renderer renderer) {
+		renderer.Render(model, color, transform);
+	}
+
+	public void setPosition(Vector3f position) {
+		this.position = position;
+		updateTransform();
+	}
+
+	public void setColor(Vector3f color) {
+		this.color = color;
+	}
+
+	public void setRotation(float rotation) {
+		this.rotation = rotation;
+		updateTransform();
+	}
+
+	@Override
+	public void close() throws IOException {
+		this.model.close();
+	}
+
+	private void updateTransform() {
+		this.transform = new Matrix4f().translate(this.position).rotate(this.rotation, new Vector3f(0, 1, 0));
+	}
+
+	@Override
+	public Matrix4f getTransform() {
+		return transform;
+	}
+
+}

app/src/main/java/chess/view/DDDrender/world/PieceEntity.java

@@ -0,0 +1,25 @@
+package chess.view.DDDrender.world;
+
+import java.io.IOException;
+
+import org.joml.Vector3f;
+
+import chess.model.Piece;
+import chess.view.DDDrender.loader.Piece3DModel;
+
+public class PieceEntity extends ModelEntity {
+
+	private static final Piece3DModel modelLoader = new Piece3DModel();
+
+	private final Piece piece;
+
+	public PieceEntity(Piece piece, Vector3f position, Vector3f color, float rotation) throws IOException {
+		super(modelLoader.getModel(piece), position, color, rotation);
+		this.piece = piece;
+	}
+
+	public Piece getPiece() {
+		return piece;
+	}
+	
+}

app/src/main/java/chess/view/DDDrender/world/World.java

@@ -0,0 +1,74 @@
+package chess.view.DDDrender.world;
+
+import java.io.Closeable;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+import chess.model.Coordinate;
+import chess.model.Move;
+import chess.model.Piece;
+
+public class World implements Closeable{
+	/** Renderable entity list */
+	private final List<Entity> entites;
+
+	/** provides fast access to 3d pieces */
+	private final PieceEntity[] pieces;
+
+	public World() {
+		this.entites = new ArrayList<>();
+		this.pieces = new PieceEntity[Coordinate.VALUE_MAX * Coordinate.VALUE_MAX];
+	}
+
+	public PieceEntity getEntity(Piece piece) {
+		for (Entity entity : entites) {
+			if (entity instanceof PieceEntity p) {
+				if (p.getPiece() == piece)
+					return p;
+			}
+		}
+		return null;
+	}
+
+	public void addPiece(PieceEntity entity, Coordinate coordinate) {
+		addEntity(entity);
+		setPieceCoords(entity, coordinate);
+	}
+
+	private void setPieceCoords(PieceEntity entity, Coordinate coordinate) {
+		pieces[coordinate.toIndex()] = entity;
+	}
+	
+	public void movePiece(PieceEntity entity, Move move) {
+		setPieceCoords(entity, move.getFinish());
+		setPieceCoords(null, move.getStart());
+	}
+
+	public void ejectPiece(Coordinate coordinate) {
+		PieceEntity entity = getPiece(coordinate);
+		if (entity != null)
+			this.entites.remove(entity);
+		setPieceCoords(null, coordinate);
+	}
+
+	public PieceEntity getPiece(Coordinate coordinate) {
+		return pieces[coordinate.toIndex()];
+	}
+
+	public void addEntity(Entity entity) {
+		this.entites.add(entity);
+	}
+
+	public List<Entity> getEntites() {
+		return entites;
+	}
+
+	@Override
+	public void close() throws IOException {
+		for (Entity entity : entites) {
+			entity.close();
+		}
+	}
+
+}

app/src/main/java/chess/view/consolerender/Console.java

@@ -2,9 +2,10 @@ package chess.view.consolerender;
 
 import chess.controller.Command;
 import chess.controller.CommandExecutor;
+import chess.controller.CommandSender;
 import chess.controller.commands.*;
 import chess.controller.commands.PromoteCommand.PromoteType;
-import chess.controller.event.GameListener;
+import chess.controller.event.GameAdapter;
 import chess.model.Color;
 import chess.model.Coordinate;
 import chess.model.Move;
@@ -16,7 +17,7 @@ import java.util.Scanner;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 
-public class Console implements GameListener {
+public class Console extends GameAdapter implements CommandSender {
     private final Scanner scanner = new Scanner(System.in);
     private final CommandExecutor commandExecutor;
     private final ConsolePieceName consolePieceName = new ConsolePieceName();
@@ -33,20 +34,6 @@ public class Console implements GameListener {
         this(commandExecutor, true);
     }
 
-    private Piece pieceAt(int x, int y) {
-        return pieceAt(new Coordinate(x, y));
-    }
-
-    private Command.CommandResult sendCommand(Command command) {
-        return this.commandExecutor.executeCommand(command);
-    }
-
-    private Piece pieceAt(Coordinate coordinate) {
-        GetPieceAtCommand command = new GetPieceAtCommand(coordinate);
-        sendCommand(command);
-        return command.getPiece();
-    }
-
     public Coordinate stringToCoordinate(String coordinates) throws Exception {
         char xPos = coordinates.charAt(0);
         char yPos = coordinates.charAt(1);
@@ -95,7 +82,7 @@ public class Console implements GameListener {
     }
 
     private boolean playerPickedSurrender(Color color) {
-        sendCommand(new SurrenderCommand(color));
+        sendSurrender(color);
         return true;
     }
 
@@ -109,7 +96,7 @@ public class Console implements GameListener {
             Coordinate start = stringToCoordinate(answer);
             System.out.println("New position: ");
             Coordinate end = stringToCoordinate(scanner.nextLine());
-            Command.CommandResult result = sendCommand(new MoveCommand(new Move(start, end)));
+            Command.CommandResult result = sendMove(new Move(start, end));
 
             return switch (Objects.requireNonNull(result)) {
                 case Command.CommandResult.Moved, Command.CommandResult.ActionNeeded -> true;
@@ -126,12 +113,7 @@ public class Console implements GameListener {
         try {
             System.out.println("Piece to examine: ");
             Coordinate piece = stringToCoordinate(scanner.nextLine());
-            GetAllowedMovesPieceCommand movesCommand = new GetAllowedMovesPieceCommand(piece);
+            List<Coordinate> allowedMoves = getPieceAllowedMoves(piece);
-            if (sendCommand(movesCommand) == Command.CommandResult.NotAllowed) {
-                System.out.println("Not allowed.");
-                return false;
-            }
-            List<Coordinate> allowedMoves = movesCommand.getDestinations();
             if (allowedMoves.isEmpty()) {
                 System.out.println("No moves allowed for this piece.");
                 return false;
@@ -201,7 +183,7 @@ public class Console implements GameListener {
                         default -> throw new Exception();
                     };
                     valid = true;
-                    sendCommand(new PromoteCommand(newPiece));
+                    sendPawnPromotion(newPiece);
                 } catch (Exception e) {
                     System.out.println("Invalid input!");
                 }
@@ -218,7 +200,7 @@ public class Console implements GameListener {
         for (int i = 0; i < Coordinate.VALUE_MAX; i++) {
             string.append(8 - i).append(" ");
             for (int j = 0; j < Coordinate.VALUE_MAX; j++) {
-                Piece p = pieceAt(j, i);
+                Piece p = getPieceAt(new Coordinate(j, i));
                 if ((i + j) % 2 == 0) {
                     string.append(Colors.LIGHT_GRAY_BACKGROUND);
                 } else {
@@ -243,7 +225,7 @@ public class Console implements GameListener {
             string.append(8 - i).append(" ");
             for (int j = 0; j < Coordinate.VALUE_MAX; j++) {
                 Coordinate currentCell = new Coordinate(j, i);
-                Piece p = pieceAt(j, i);
+                Piece p = getPieceAt(new Coordinate(j, i));
                 if (moves.contains(currentCell)) {
                     string.append(Colors.YELLOW_BACKGROUND);
                 } else {
@@ -269,10 +251,6 @@ public class Console implements GameListener {
         System.out.println(string);
     }
 
-    @Override
-    public void onMove(Move move, boolean captured) {
-    }
-
     @Override
     public void onMoveNotAllowed(Move move) {
         System.out.println("Move not allowed.");
@@ -284,9 +262,7 @@ public class Console implements GameListener {
     }
 
     private boolean onAskedCastling() {
-        GetAllowedCastlingsCommand cmd = new GetAllowedCastlingsCommand();
+        return switch (getAllowedCastlings()) {
-        sendCommand(cmd);
-        return switch (cmd.getCastlingResult()) {
             case Small -> onSmallCastling();
             case Big -> onBigCastling();
             case Both -> onBothCastling();
@@ -334,10 +310,9 @@ public class Console implements GameListener {
     }
 
     @Override
-    public void onCastling(boolean bigCastling) {}
+    public CommandExecutor getCommandExecutor() {
-
+        return this.commandExecutor;
-    @Override
+    }
-    public void onPawnPromoted(PromoteType promotion) {}
     
 
 }

app/src/main/java/chess/view/simplerender/Window.java

@@ -17,24 +17,15 @@ import javax.swing.JOptionPane;
 import javax.swing.JPanel;
 import javax.swing.SwingUtilities;
 
-import chess.controller.Command;
-import chess.controller.Command.CommandResult;
 import chess.controller.CommandExecutor;
-import chess.controller.commands.CastlingCommand;
+import chess.controller.CommandSender;
-import chess.controller.commands.GetAllowedCastlingsCommand;
-import chess.controller.commands.GetAllowedMovesPieceCommand;
-import chess.controller.commands.GetPieceAtCommand;
-import chess.controller.commands.MoveCommand;
-import chess.controller.commands.PromoteCommand;
 import chess.controller.commands.PromoteCommand.PromoteType;
-import chess.controller.commands.UndoCommand;
 import chess.controller.commands.GetAllowedCastlingsCommand.CastlingResult;
 import chess.controller.event.GameListener;
 import chess.model.Coordinate;
 import chess.model.Move;
-import chess.model.Piece;
 
-public class Window extends JFrame implements GameListener {
+public class Window extends JFrame implements GameListener, CommandSender {
 
 	private final CommandExecutor commandExecutor;
 
@@ -65,25 +56,22 @@ public class Window extends JFrame implements GameListener {
 		});
 	}
 
-	private CommandResult sendCommand(Command command) {
-		return this.commandExecutor.executeCommand(command);
-	}
-
 	private Color getCellColor(int x, int y) {
 		return ((x + y) % 2 == 1) ? Color.DARK_GRAY : Color.LIGHT_GRAY;
 	}
 
+	@SuppressWarnings("unused")
 	private void buildButtons(JPanel bottom) {
 		castlingButton.addActionListener((event) -> {
-			sendCommand(new CastlingCommand(false));
+			sendCastling();
 		});
-
+		
 		bigCastlingButton.addActionListener((event) -> {
-			sendCommand(new CastlingCommand(true));
+			sendBigCastling();
 		});
 
 		undoButton.addActionListener((event) -> {
-			sendCommand(new UndoCommand());
+			sendUndo();
 		});
 
 		bottom.add(castlingButton);
@@ -127,23 +115,13 @@ public class Window extends JFrame implements GameListener {
 		updateBoard();
 	}
 
-	private boolean isCellEmpty(int x, int y) {
-		return pieceAt(x, y) == null;
-	}
-
-	private Piece pieceAt(int x, int y) {
-		GetPieceAtCommand command = new GetPieceAtCommand(new Coordinate(x, y));
-		sendCommand(command);
-		return command.getPiece();
-	}
-
 	private void updateBoard() {
 		PieceIcon pieceIcon = new PieceIcon();
 		for (int y = 0; y < 8; y++) {
 			for (int x = 0; x < 8; x++) {
 				JLabel cell = this.cells[x][y];
 				try {
-					cell.setIcon(pieceIcon.getIcon(pieceAt(x, y)));
+					cell.setIcon(pieceIcon.getIcon(getPieceAt(x, y)));
 				} catch (IOException e) {
 					e.printStackTrace();
 				}
@@ -152,11 +130,7 @@ public class Window extends JFrame implements GameListener {
 	}
 
 	private boolean previewMoves(int x, int y) {
-		GetAllowedMovesPieceCommand movesCommand = new GetAllowedMovesPieceCommand(new Coordinate(x, y));
+		List<Coordinate> allowedMoves = getPieceAllowedMoves(new Coordinate(x, y));
-		if (sendCommand(movesCommand) == CommandResult.NotAllowed)
-			return false;
-
-		List<Coordinate> allowedMoves = movesCommand.getDestinations();
 		if (allowedMoves.isEmpty())
 			return false;
 
@@ -198,18 +172,17 @@ public class Window extends JFrame implements GameListener {
 		}
 		if (!this.lastClick.equals(new Coordinate(x, y))) {
 			Move move = new Move(lastClick, new Coordinate(x, y));
-			sendCommand(new MoveCommand(move));
+			sendMove(move);
 		}
 		this.lastClick = null;
 	}
 
 	private void updateButtons() {
-		GetAllowedCastlingsCommand cmd = new GetAllowedCastlingsCommand();
+		CastlingResult castlings = getAllowedCastlings();
-		sendCommand(cmd);
 		this.castlingButton.setEnabled(
-				cmd.getCastlingResult() == CastlingResult.Small || cmd.getCastlingResult() == CastlingResult.Both);
+			castlings == CastlingResult.Small || castlings == CastlingResult.Both);
 		this.bigCastlingButton.setEnabled(
-				cmd.getCastlingResult() == CastlingResult.Big || cmd.getCastlingResult() == CastlingResult.Both);
+			castlings == CastlingResult.Big || castlings == CastlingResult.Both);
 	}
 
 	@Override
@@ -296,7 +269,7 @@ public class Window extends JFrame implements GameListener {
 			}
 
 			if (choosedType != null)
-				sendCommand(new PromoteCommand(choosedType));
+				sendPawnPromotion(choosedType);
 		});
 	}
 
@@ -324,4 +297,9 @@ public class Window extends JFrame implements GameListener {
 	@Override
 	public void onPawnPromoted(PromoteType promotion) {}
 
+	@Override
+	public CommandExecutor getCommandExecutor() {
+		return this.commandExecutor;
+	}
+
 }

app/src/test/java/chess/PgnTest.java

@@ -30,6 +30,7 @@ public class PgnTest {
 		commandExecutor.addListener(new GameAdapter() {
 			@Override
 			public void onGameEnd() {
+				// does not work with this for some reason ...
 				synchronized (game) {
 					game.notifyAll();
 				}
@@ -85,17 +86,17 @@ public class PgnTest {
 
 			commandExecutor.close();
 
-			synchronized (game) {
+			synchronized (this) {
-				game.notifyAll();
+				notifyAll();
 			}
 
 		});
 
 		commandExecutor.executeCommand(new NewGameCommand());
 
-		synchronized (game) {
+		synchronized (this) {
 			try {
-				game.wait();
+				wait();
 			} catch (InterruptedException e) {
 				e.printStackTrace();
 			}