public Keyboard(Character [,] keySet, int maxDepth)
{
keys = keySet;
_maxDepth = maxDepth;
DimensionX = keys.GetUpperBound(1);
DimensionY = keys.GetUpperBound(0);
// Set up the keyboard character meta data
SetKeyBoardCharacterList();
SetKnightMoveFunctionList();
SetKeyLocations();
SetKeyKnightMoveOptions();
}
// Decided it would be more efficient to use
// the list of possible valid words from the dictionary and evaluate them then
// against the keyboard Knight Move permutations using PLinq.
private static string[] FindValidWords(Character[,] characterSet)
{
string fileName = @"..\..\Data\SINGLE.TXT";
string[] filteredDictionary; // PLinq is more efficient with arrays.
Keyboard board = new Keyboard(characterSet, SEARCH_DEPTH);
using (StreamReader sr = new StreamReader(fileName))
{
filteredDictionary = sr.Lines().ToArray();
}
string[] finalWordList = (from word in filteredDictionary.AsParallel()
.WithMergeOptions(ParallelMergeOptions.NotBuffered)
.WithDegreeOfParallelism(Environment.ProcessorCount)
where board.ValidateWord(new Word(word))
select word).ToArray();
return finalWordList;
}
/// <summary>
/// Special keys return more than just a single character
/// </summary>
/// <returns>All keys relating to the special keys</returns>
public List<Character> SpecialKeys(Character currentChar)
{
List<Character> charList = new List<Character>();
// Check if we are on a special key like the spacebar/shift/enter
// If we are return all the other keys that do not have the same location
if (this.CurrentCharacter().Id.HasValue)
charList = (from chr in CharacterList
where chr.Id.Value == currentChar.Id.Value
&& chr.LocationX != currentChar.LocationX
&& chr.LocationY != currentChar.LocationY
select chr).ToList();
return charList;
}
