/// <summary>
/// Returns a descriptive text describing the current state of the bot.
/// It contains important parameters that are essential to understand the context of almost every error.
/// It should be use in exceptions and error traces.
/// </summary>
/// <returns></returns>
string GetBotStateDiagText()
{
StrategyTreeNode stNode = new StrategyTreeNode();
_strategies[_pos].GetNode(_curStrNodeIdx, &stNode);
return(String.Format("Player: {0}, pos: {1}, str. node: {2}({3})",
_name, _pos, _curStrNodeIdx, stNode.ToStrategicString(null)));
}
public virtual PokerAction OnActionRequired(string gameString)
{
log.InfoFormat("{0} OnActionRequired", _name);
_gameRecord = new GameRecord(gameString);
ProcessActions();
int chBegin, movesCount;
_strIndexes[_pos].GetChildrenBeginIdxAndCount(_curStrNodeIdx, out chBegin, out movesCount);
double[] probabs = new double[movesCount];
double sumProbab = 0;
for (int c = 0; c < movesCount; ++c)
{
int stNodeIdx = _strIndexes[_pos].GetChildIdx(chBegin + c);
StrategyTreeNode stNode = new StrategyTreeNode();
_strategies[_pos].GetNode(stNodeIdx, &stNode);
// Verify we are in the correct position.
// This is proven to be very helpful in testing.
if (!stNode.IsPlayerAction(_pos))
{
throw new ApplicationException(String.Format("{0}: expected strategy child: player action for pos {1}, but was: '{2}'",
GetBotStateDiagText(),
_pos,
stNode.ToStrategicString(null)));
}
probabs[c] = stNode.Probab;
sumProbab += probabs[c];
}
try
{
// Convert to relative probability and ignore if necessary
for (int c = 0; c < probabs.Length; ++c)
{
probabs[c] /= sumProbab;
if (probabs[c] < _relProbabIgnoreLevel)
{
probabs[c] = 0;
}
}
_moveSelector.SetWeights(probabs);
}
catch (Exception e)
{
// If there are problems with 0-probablities, add more info to it.
throw new ApplicationException(String.Format("{0} : see inner exception", GetBotStateDiagText()), e);
}
int moveIdx = _moveSelector.Next();
Debug.Assert(probabs[moveIdx] > 0, "0-probabs must not occur");
int nextStrNode = _strIndexes[_pos].GetChildIdx(chBegin + moveIdx);
PokerAction move = ConvertStrActionToPokerAction(nextStrNode);
log.InfoFormat("{0} OnActionRequired() returns {1}", _name, move);
return(move);
}
private PokerAction ConvertStrActionToPokerAction(int nextStNodeIdx)
{
StrategyTreeNode nextStNode = new StrategyTreeNode();
_strategies[_pos].GetNode(nextStNodeIdx, &nextStNode);
if (!nextStNode.IsPlayerAction(_pos))
{
throw new ApplicationException(String.Format("{0} : wrong move: {1}", GetBotStateDiagText(), nextStNode.ToStrategicString(null)));
}
double amount = nextStNode.Amount;
double raiseAmount = _gameState.Players[_pos].Bet + amount - _gameState.Bet;
if (raiseAmount > 0)
{
return(PokerAction.r(_pos, raiseAmount));
}
if (amount == 0 && _gameState.Players[_pos].Bet < _gameState.Bet)
{
return(PokerAction.f(_pos));
}
return(PokerAction.c(_pos));
}
/// <summary>
/// Processes each poker action received from the server.
/// Updates the game state and moves to the next node in our strategy.
/// </summary>
/// <param name="pa"></param>
void ProcessAction(PokerAction pa)
{
int chBegin, chCount;
_strIndexes[_pos].GetChildrenBeginIdxAndCount(_curStrNodeIdx, out chBegin, out chCount);
int nextStrNodeIdx = -1;
if (pa.IsDealerAction())
{
_gameState.UpdateByAction(pa, null);
if (pa.Position >= 0 && pa.Position != _pos)
{
// This is a deal to an opponent
// We can skip it for games without public cards (and it is very unlikely we will have some
// in the future).
return;
}
int[] hand = _deckDescr.GetIndexes(_gameState.Players[_pos].Hand);
int abstrCard = _chanceAbsrtractions[_pos].GetAbstractCard(hand, hand.Length);
for (int c = 0; c < chCount; ++c)
{
int stNodeIdx = _strIndexes[_pos].GetChildIdx(chBegin + c);
StrategyTreeNode stNode = new StrategyTreeNode();
_strategies[_pos].GetNode(stNodeIdx, &stNode);
if (!stNode.IsDealerAction)
{
throw new ApplicationException(
String.Format("{0} : expected strategy child: dealer action but was: '{1}'",
GetBotStateDiagText(), stNode.ToStrategicString(null)));
}
if (stNode.Card == abstrCard)
{
nextStrNodeIdx = stNodeIdx;
goto searchFinished;
}
}
}
else // Player action
{
double inPotBefore = _gameState.Players[pa.Position].InPot;
_gameState.UpdateByAction(pa, null);
double inPotAfter = _gameState.Players[pa.Position].InPot;
double actualAmount = inPotAfter - inPotBefore;
double bestAmount = double.MinValue;
for (int c = 0; c < chCount; ++c)
{
int stNodeIdx = _strIndexes[_pos].GetChildIdx(chBegin + c);
StrategyTreeNode stNode = new StrategyTreeNode();
_strategies[_pos].GetNode(stNodeIdx, &stNode);
if (!stNode.IsPlayerAction(pa.Position))
{
throw new ApplicationException(
String.Format("{0} : expected strategy child: player action pos {1} but was: '{2}'",
GetBotStateDiagText(), pa.Position, stNode.ToStrategicString(null)));
}
double amount = stNode.Amount;
switch (_amountSearchMethod)
{
case AmountSearchMethod.Equal:
if (FloatingPoint.AreEqual(amount, actualAmount, AMOUNT_EPSILON))
{
nextStrNodeIdx = stNodeIdx;
goto searchFinished;
}
break;
case AmountSearchMethod.Closest:
if (Math.Abs(amount - actualAmount) < Math.Abs(bestAmount - actualAmount))
{
bestAmount = amount;
nextStrNodeIdx = stNodeIdx;
}
break;
}
}
}
searchFinished:
if (nextStrNodeIdx == -1)
{
throw new ApplicationException(
String.Format("{0} : cannot find strategy action for poker action '{1}'",
GetBotStateDiagText(), pa.ToGameString()));
}
_curStrNodeIdx = nextStrNodeIdx;
}