Add pieces into board

src/backend/Board.java

@@ -7,6 +7,11 @@ public class Board {
 	private int width;
 	private int height;
 	private ArrayList<Piece> pieces;
+	private int turnNumber = 0;
+	private boolean turnWhite = true;
+	private int[] selected = null; //for user touch
+	private ArrayList<int[]> highlighted = new ArrayList<>();
+	private ArrayList<Move> moveHistory = new ArrayList<>();
 
 	public Board(int colNum, int lineNum) {
 		this.width = colNum;
@@ -27,12 +32,12 @@ public class Board {
 
 	public int getTurnNumber() {
 		//TODO
-		return 0;
+		return turnNumber;
 	}
 
 	public boolean isTurnWhite() {
 		//TODO
-		return false;
+		return turnWhite;
 	}
 
 	public void setPiece(boolean isWhite, PieceType type, int x, int y) {
@@ -110,13 +115,13 @@ public class Board {
 	}
 	
 	public ArrayList<Piece> getPieces() {
-		ArrayList<Piece> pieces = new ArrayList<>();
 		//TODO
 		
 		return pieces;
 	}
 
 	public void userTouch(int x, int y) {
+		
 		//TODO
 		
 	}
@@ -141,6 +146,9 @@ public class Board {
 	/* The following methods require more work ! */
 
 	public boolean isHighlighted(int x, int y) {
+		for (int[] pos : highlighted) {
+	        if (pos[0] == x && pos[1] == y) return true;
+	    }
 		//TODO
 		return false;
 	}