usertouch V1

src/backend/Board.java

@@ -119,10 +119,27 @@ public class Board {
 	}
 
 	public void userTouch(int x, int y) {
-		//TODO
-		
-	}
+		if (x < 0 || x >= width || y < 0 || y >= height) return;
 
+	    if (selectedX == -1) { // No selection yet
+	        if (board[x][y] != null) {
+	            selectedX = x;
+	            selectedY = y;
+	        }
+	    } else { // Already selected
+	        if (x == selectedX && y == selectedY) { // Unselect
+	            selectedX = -1;
+	            selectedY = -1;
+	        } else { // Move piece
+	            board[x][y] = board[selectedX][selectedY];
+	            board[selectedX][selectedY] = null;
+	            turn++; // Increment turn
+	            selectedX = -1;
+	            selectedY = -1;
+	        }
+	    }
+	}
+		
 	public boolean isSelected(int x, int y) {
 		return x == selectedX && y == selectedY;
 	}