puzzle.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace WordFinderGame
{
    /// <summary>
    /// The Puzzle class keeps track of the puzzle grid. The Game uses it to draw
    /// the initial grid to the screen, and the WordFinder class uses it to check if the
    /// player's input contains only letters from the grid.
    /// </summary>
    class Puzzle
    {
        /// <summary>
        /// Randomizer
        /// </summary>
        private Random random = new Random();

        /// <summary>
        /// Consonants (including Y)
        /// </summary>
        public static readonly char[] Consonants = { 'B', 'C', 'D', 'F', 'G', 'H', 'J', 'K',
               'L', 'M', 'N', 'P', 'Q', 'R', 'S', 'T', 'V', 'W', 'X', 'Y', 'Z' };

        /// <summary>
        /// Vowels (including Y)
        /// </summary>
        public static readonly char[] Vowels = { 'A', 'E', 'I', 'O', 'U', 'Y' };

        /// <summary>
        /// Backing field for Letters property
        /// </summary>
        char[] letters;

        /// <summary>
        /// Get the letters in the puzzle
        /// </summary>
        public IEnumerable<char> Letters
        {
            get { return letters; }
        }

        /// <summary>
        /// The number of letters in the puzzle
        /// </summary>
        private int puzzleLength;

        /// <summary>
        /// Puzzle Constructor
        /// </summary>
        /// <param name="puzzleLength">The number of letters in the puzzle</param>
        /// <param name="vowelEvery">Every nth letter is a vowel</param>
        public Puzzle(int puzzleLength, int vowelEvery)
        {
            this.puzzleLength = puzzleLength;

            letters = new char[puzzleLength];

            for(int i = 0; i< puzzleLength; i++)
            {
                if(i % vowelEvery == 0)
                    letters[i] = Vowels[random.Next(Vowels.Length)];
                else
                    letters[i] = Consonants[random.Next(Consonants.Length)];
            }
        }

        /// <summary>
        /// Draw the puzzle at a specific point on the screen
        /// </summary>
        /// <param name="left">The column position of the cursor</param>
        /// <param name="top">The row position of the cursor</param>
        public void Draw(int left, int top)
        {
            int oldTop = Console.CursorTop;
            int oldLeft = Console.CursorLeft;

            Console.BackgroundColor = ConsoleColor.Gray;

            // Create the random puzzle using random letters and print them
            for (int i = 0; i < puzzleLength; i++)
            {
                // Use cursor movement to draw the rows of the square puzzle grid
                if(i % Math.Floor(Math.Sqrt(puzzleLength)) == 0)
                {
                    Console.CursorTop = top++;
                    Console.CursorLeft = left;
                }
                if(Vowels.Contains(letters[i]))
                    Console.ForegroundColor = ConsoleColor.DarkRed;
                else
                    Console.ForegroundColor = ConsoleColor.DarkBlue;

                Console.Write(" {0} ", letters[i]);
            }
            Console.ResetColor();

            Console.CursorTop = oldTop;
            Console.CursorLeft = oldLeft;
        }


    }
}