add world interface

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

@@ -0,0 +1,9 @@
+package chess.view.DDDrender.world;
+
+import chess.view.DDDrender.Renderer;
+
+public abstract class Entity {
+
+	public abstract void render(Renderer renderer);
+	
+}

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

@@ -0,0 +1,55 @@
+package chess.view.DDDrender.world;
+
+import java.io.IOException;
+
+import org.joml.Vector3f;
+
+import chess.model.Piece;
+import chess.view.DDDrender.DDDModel;
+import chess.view.DDDrender.Renderer;
+import chess.view.DDDrender.loader.Piece3DModel;
+
+public class PieceEntity extends Entity {
+
+	private static final Piece3DModel modelLoader = new Piece3DModel();
+
+	private final Piece piece;
+	private Vector3f position;
+	private Vector3f color;
+	private float rotation;
+	private DDDModel model;
+
+	public PieceEntity(Piece piece, Vector3f position, Vector3f color, float rotation) {
+		this.piece = piece;
+		this.position = position;
+		this.color = color;
+		this.rotation = rotation;
+		try {
+			this.model = modelLoader.getModel(piece);
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+	}
+
+	public Piece getPiece() {
+		return piece;
+	}
+
+	@Override
+	public void render(Renderer renderer) {
+		renderer.Render(model, color, position, rotation);
+	}
+
+	public void setPosition(Vector3f position) {
+		this.position = position;
+	}
+
+	public void setColor(Vector3f color) {
+		this.color = color;
+	}
+
+	public void setRotation(float rotation) {
+		this.rotation = rotation;
+	}
+	
+}

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

@@ -0,0 +1,40 @@
+package chess.view.DDDrender.world;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import chess.model.Piece;
+import chess.view.DDDrender.Camera;
+
+public class World {
+	private final Camera camera;
+	private final List<Entity> entites;
+
+	public World(Camera camera) {
+		this.camera = camera;
+		this.entites = new ArrayList<>();
+	}
+
+	public PieceEntity getEntity(Piece piece) {
+		for (Entity entity : entites) {
+			if (entity instanceof PieceEntity p) {
+				if (p.getPiece() == piece)
+					return p;
+			}
+		}
+		return null;
+	}
+
+	public void addEntity(Entity entity) {
+		this.entites.add(entity);
+	}
+
+	public Camera getCamera() {
+		return camera;
+	}
+
+	public List<Entity> getEntites() {
+		return entites;
+	}
+
+}