protected int[] GetOptimalThrow(ThrowingStrategy strategy)
{
//This is the AI, automatically chooses which cards to throw away
//DESCRIPTION:
//THERE ARE TWO THINGS THE AI NEEDS TO CONSIDER:
//1) Having the statistically best hand possible (given random cut-up card)
//2) Giving the opponent the statistically best/worst cards possible (given 3 random cards)
//What Optimal means depends on your strategy
//This array will hold the best 4 indices to keep
var best = new int[4];
//Stores the best score so far to find max with
double score = double.MinValue, bestScore = 0;
//Looks at every possible throwing possible (there should be 15, since 6C4 is 15)
foreach (var combo in HelperFunctions.GetKCombination(_size, FinalHandSize))
{
//Finds hand that best satisfies chosen strategy
score = AnalyzeThrow(combo, strategy);
{
//Better hand found, replace original
if (score > bestScore)
{
bestScore = score;
best = combo;
}
}
}
return(best);
}
protected double AnalyzeCrib(int[] keep)
{
var deck = HandComplement;
//value is the weighted average of all possible hands
double value = 0.0;
var fullCrib = new Card[FullHandSize];
//Holds the 0-2 cards that the user has thrown away
var thrownCards = GetRest(keep);
//Generates first initial crib cards from keep array
thrownCards.CopyTo(fullCrib, 0);
//How many ways are there to finish the crib?
//In other words, how many ways are there to choose 3 cards from a deck of 46?
//In other words, a lot!
var combos = HelperFunctions.GetKCombination(deck.Count() - _size, FullHandSize - thrownCards.Count());
int possibilities = combos.Count();
foreach (var combo in combos)
{
//There are cases where the cutIndex is NOT needed (no Jacks, two different suits in hand)
//For now we will ignore that, but it may be able to squeeze out a little performance
for (int cutCard = thrownCards.Count(); cutCard < FullHandSize; cutCard++)
{
//For each possible combo, finish the crib and evaluate
for (int i = 0; i < combo.Count(); i++)
{
fullCrib[i + thrownCards.Count()] = HandComplement[combo[i]];
}
value += ((Evaluation.EvaluateFullHand(fullCrib, cutCard) / (possibilities)));
}
}
return(value);
}