/// <summary>
/// Invokes the specified contestant.
/// </summary>
/// <param name="contestant">The contestant.</param>
private void InvokePlayer(Contestant contestant)
{
#region Implementation
//increment the index every time a player is invoked
CurrentPlayerIndex++;
//only invoke the player if they still have remaining attempts
if (contestant.IsInPlay)
{
//if the player is a human player, pass the human's
//guess along to the interface implementation
if (contestant.Player.IsHuman)
{
((IHumanPlayer)contestant.Player).Guess(contestant.HumanGuess);
}
try
{
//call the player to have another crack
string guess = contestant.Player.TakeTurn(contestant.CurrentPhrase.Strip());
if (!string.IsNullOrWhiteSpace(guess))
{
bool isGoodGuess = false;
//if the player returns a single letter, then they're just eliminating that letter
//rather than guessing the entire word
if (guess.Length == 1)
{
Trace.WriteLine(string.Format("Player '{0}' has guessed the letter '{1}'", contestant.Name, guess));
if (CurrentPhrase.Contains(guess, StringComparison.OrdinalIgnoreCase))
{
if (contestant.IncrementHits(guess))
{
//if the phrase contains the letter update the player's progress
contestant.CurrentPhrase = UpdateWord(contestant.CurrentPhrase, guess);
isGoodGuess = true;
Trace.WriteLine(string.Format("Player '{0}'s phrase has now been updated to '{1}'",
contestant.Name, contestant.CurrentPhrase));
}
}
guess = contestant.CurrentPhrase;
}
else
{
Trace.WriteLine(string.Format("Player '{0}' has guessed the phrase '{1}'", contestant.Name, guess));
//Has the player guessed the complete word
if (CurrentPhrase.Equals(guess, StringComparison.OrdinalIgnoreCase))
{
//if the phrase contains the letter update the player's progress
contestant.CurrentPhrase = guess;
contestant.IncrementHits(guess);
contestant.HasCompletedChallenge = true;
isGoodGuess = true;
Trace.WriteLine(string.Format("Player '{0}' has correctly guessed the phrase!", contestant.Name));
}
}
//if not increment the number of attempts if and
//disqualify them if they've exceeded the max chances
if (!isGoodGuess)
{
contestant.Attempts++;
contestant.IsInPlay = contestant.Attempts < MaxNumberOfChances;
if (contestant.IsInPlay)
{
Trace.WriteLine(string.Format("Player '{0}' now has {1} chance(s) remaining",
contestant.Name, (MaxNumberOfChances - contestant.Attempts)));
}
else
{
Trace.WriteLine(string.Format("Player '{0}' has run out of chances - for you, the war is over!", contestant.Name));
}
}
}
else
{
//a player that returns nothing is disqualified
contestant.IsInPlay = false;
contestant.IsDisqualified = true;
Trace.WriteLine(string.Format("Player '{0}' returned an invalid result and has been disqualified", contestant.Name));
}
}
catch
{
//a player that throws an exception is disqualified
contestant.IsInPlay = false;
contestant.IsDisqualified = true;
Trace.WriteLine(string.Format("Player '{0}' threw an exception and has been disqualified", contestant.Name));
}
contestant.TotalAttempts++;
Hangman.Executioner.UpdateLifeLineImage(contestant);
Trace.WriteLine(Environment.NewLine);
//update the UI once all players have had a go or there is a game changer
if (contestant.IsDisqualified || CurrentPlayerIndex >= _playersInDraw.Count)
{
MatchStatus = EvaluateRound();
}
}
#endregion
}
private void AddPlayer()
{
#region Implementation
if (string.IsNullOrWhiteSpace(HumanPlayerName))
{
var result = MessageBox.Show("Please specify a player name", "Invalid Player", MessageBoxButton.OKCancel, MessageBoxImage.Information, MessageBoxResult.OK);
}
else
{
try
{
if (ValidateTeamName(HumanPlayerName))
{
IPlayer player = God.CreateHuman(HumanPlayerName);
var contestant = new Contestant(HumanPlayerName, player);
_tournamentPlayers.Add(contestant);
HumanPlayerName = string.Empty;
//check that we have enough
EvaluateContestants();
}
else
{
MessageBox.Show("That name has already been taken, please choose another.");
}
}
catch (Exception error)
{
MessageBox.Show(error.Message, "Cannot Create Player");
}
}
#endregion
}
/// <summary>
/// Updates the life line image.
/// </summary>
/// <param name="contestant">The contestant.</param>
/// <returns></returns>
public void UpdateLifeLineImage(Contestant contestant)
{
#region Implementation
string image = string.Empty;
LifeLine lifelIne = LifeLine.Full;
if (contestant.IsInPlay)
{
//convert the contestants remaining chances into a lifeline
int remainder = MaxNumberOfChances - contestant.Attempts;
lifelIne = (LifeLine)remainder;
}
else
{
lifelIne = LifeLine.Dead;
}
//call the relevant method depending on the rules of the game
switch (MaxNumberOfChances)
{
case 3:
image = Get3LifeLineImage(lifelIne);
break;
case 4:
image = Get4LifeLineImage(lifelIne);
break;
case 5:
image = Get5LifeLineImage(lifelIne);
break;
default:
image = Get6LifeLineImage(lifelIne);
break;
}
//create the image
Uri source = new Uri(image, UriKind.Relative);
contestant.StatusImage = new BitmapImage(source);
#endregion
}