public void TestReturnedWinningWords()
{
List <string> words = new List <string> {
"pygobranchiate",
"pygofer",
"pygopagus",
"pygopod",
"pygopodine",
"pygopodous",
"pygostyle",
"pygostyled",
"pygostylous",
"pyic",
"pyin",
"pyins",
"pyjama",
"pyjamaed",
"pyjamas"
};
TrieSearch trie = new TrieSearch(words);
List <string> resultWords = trie.GetWinningWords("PYG");
Assert.IsTrue(resultWords.Count == 5);
}
public GameState processLetter(string word, string letter)
{
GameState gameState = new GameState();
gameState.word = word + letter;
gameState.setGameInProgress();
if (gameState.word.Length >= 4 && wordsTree.IsPrefixAWord(gameState.word))
{
//HGP: Letter entered leads to an existing word...Human loses
gameState.message = "Computer wins: " + gameState.word + " is an existing word";
gameState.setComputerWin();
return(gameState);
}
List <string> resultWords = wordsTree.GetWordsForPrefix(gameState.word);
if (resultWords.Count == 0)
{
//HGP: Letter entered doesnt have a word result...Human loses
gameState.setComputerWin();
gameState.message = "Computer wins: it doesn't exist a word starting by: " + gameState.word;
gameState.setComputerWin();
return(gameState);
}
else
{
//HGP: Letter entered is valid...Computer plays next letter
//HGP: Ask for winning words to the trie
List <string> winningWords = wordsTree.GetWinningWords(gameState.word);
// it should play randomly among all its winning movements;
if (winningWords.Count > 0)
{
Random random = new Random();
int index = random.Next(winningWords.Count);
string wordToFollow = winningWords[index];
gameState.word = gameState.word + wordToFollow[gameState.word.Length];
gameState.message = "Human plays...";
return(gameState);
}
else
{
List <string> loosingWords;
//Look for the words that doesnt contain an odd word inside so the game it doesnt finish earlier
//TODO HGP: This search can be optimized
List <string> loosingWordsWithoutOddWordsInside = resultWords.Where(s => !wordsTree.ContainsAnOddWordInsideWithLengthGreaterThan(s, 3)).ToList();
if (loosingWordsWithoutOddWordsInside.Count == 0)
{
loosingWords = resultWords.OrderByDescending(w => w.Length).ToList();
}
else
{
loosingWords = loosingWordsWithoutOddWordsInside.OrderByDescending(w => w.Length).ToList();
}
string loosingWord = loosingWords.First();
gameState.word = gameState.word + loosingWord[gameState.word.Length];
gameState.message = "Human plays...";
if (wordsTree.IsPrefixAWord(gameState.word) && gameState.word.Length >= 4)
{
//HGP: Letter entered leads to an existing word...Computer loses
gameState.setHumanWin();
gameState.message = "Human wins...";
gameState.setHumanWin();
}
return(gameState);
}
}
}