gistfile1.scala

	/**
	 * Builds a new sudoku instance given a difficulty level
	 * 
	 * @param level describes the difficulty level of the generated game
	 * 	- 1 normal
	 *  - 2 medium
	 *  - 3 hard  
	 */
	def makeSudoku(level: Int): Sudoku = {
		var board = new Array[Array[Int]](9, 9)
		// Initialize board to correct values
		for (i <- 0 to 8) {
			for (j <- 0 to 8) {
				board(i)(j) = ((j + i * 6 + i / 3) % 9 + 1)
			}
		}

		// Shuffle values between rows
		for (h <- 0 to 60) {
			// FIXME: use correct methods
			val i = (Math.random * 100).asInstanceOf[Int] % 3
			val j = (Math.random * 100).asInstanceOf[Int] % 3
			val k = (Math.random * 100).asInstanceOf[Int] % 3
			val choose = (Math.random * 100).asInstanceOf[Int] % 2
			if (choose == 0 && j != k) {
				println ("i= " + i + " j= " + j + " k= " + k)
				val swap = board(i*3 + j)
				board(i*3 + j) = board(i*3 + k)
				board(i*3 + k) = swap
			} else {
				println ("i= " + i + " j= " + j + " k= " + k)
				for (l <- 0 to 8) {
					val swap = board(l)(i*3 + j)
					board(l)(i*3 + j) = board(l)(i*3 + k)
					board(l)(i*3 + k) = swap
				}
			}
		}

		var sudoku = new Sudoku
		sudoku.setBoard(board)
		if (sudoku.checkConstraints == false) {
			Dialog.showMessage(null, "Constraint verification failed", "Error", Dialog.Error)
		}
		return sudoku
	}