change project structure

app/src/main/java/chess/controller/commands/GetPieceAtCommand.java

@@ -0,0 +1,33 @@
+package chess.controller.commands;
+
+import chess.controller.Command;
+import chess.controller.OutputSystem;
+import chess.model.Coordinate;
+import chess.model.Game;
+import chess.model.Piece;
+
+public class GetPieceAtCommand extends Command{
+
+	private final Coordinate pieceCoords;
+	private Piece piece;
+
+	public GetPieceAtCommand(Coordinate pieceCoords) {
+		this.pieceCoords = pieceCoords;
+		this.piece = null;
+	}
+
+	@Override
+	public CommandResult execute(Game game, OutputSystem outputSystem) {
+		if (!pieceCoords.isValid())
+			return CommandResult.NotAllowed;
+
+		this.piece = game.getBoard().pieceAt(pieceCoords);
+
+		return CommandResult.NotMoved;
+	}
+
+	public Piece getPiece() {
+		return piece;
+	}
+
+}