public static double Simulate(GameState root)
{
var traces = new Queue <string>();
var state = new GameState(
(GameState)root.Parent,
root.Board,
root.Street,
root.Hero,
root.Villain,
root.Pot,
root.WagerToCall,
root.LastAction);
if (state.PlayerFolded)
{
var investedAmount = state.Hero.IsToPlay ?
state.GetInvestedAmount() : -state.GetInvestedAmount();
return(investedAmount);
}
if (state.IsShowdown)
{
TryUpdateBoard(state, Street.Flop);
return(Evaluator.Evaluate(state));
}
state.Board = BoardGenerator.FillFromTo(
state.Board,
Street.Flop,
state.Street,
state.Hero.HoleCards);
var stateValue = 0.0d;
while (!GameState.IsOver(state.Street))
{
switch (state.ToPlay.GetAction(state.WagerToCall))
{
case Action.Check:
{
var isLastToAct = state.ToPlay.IsLastToAct(Action.Check);
state.WagerToCall = 0.0d;
state.LastAction = Action.Check;
if (isLastToAct && state.Street.ShouldShowdown())
{
state.Street = state.Street.GetNextStreet();
stateValue = Evaluator.Evaluate(state);
break;
}
if (isLastToAct)
{
state.Board |= BoardGenerator.GenerateCard(
state.Board | state.Hero.HoleCards);
state.Street = state.Street.GetNextStreet();
}
state.ToPlay = isLastToAct ?
(state.Hero.IsFirstToActAfterFlop() ?
state.Hero : state.Villain) :
state.Hero.IsToPlay ? state.Villain : state.Hero;
state.Hero.IsToPlay = false;
state.Villain.IsToPlay = false;
state.ToPlay.IsToPlay = true;
traces.Enqueue(state.ToString());
break;
}
case Action.Bet50:
{
var bet = state.ToPlay.Wager(state.Pot.GetHalfPot());
state.Pot += bet;
state.WagerToCall = bet;
state.ToPlay = state.Hero.IsToPlay ?
state.Villain : state.Hero;
state.Hero.IsToPlay = false;
state.Villain.IsToPlay = false;
state.ToPlay.IsToPlay = true;
state.LastAction = Action.Bet50;
traces.Enqueue(state.ToString());
break;
}
case Action.Call:
{
var callAmount = state.ToPlay.Wager(state.WagerToCall);
state.Pot += callAmount;
state.WagerToCall = 0.0d;
state.LastAction = Action.Call;
if (state.Street.ShouldShowdown() || state.AnyAllIn)
{
state.Board = BoardGenerator.FillToRiver(
state.Board, state.Street, state.Hero.HoleCards);
state.Street = Street.Showdown;
stateValue = Evaluator.Evaluate(state);
break;
}
state.Board |= BoardGenerator.GenerateCard(
state.Board | state.Hero.HoleCards);
state.Street = state.Street.GetNextStreet();
state.ToPlay = state.Hero.IsFirstToActAfterFlop() ?
state.Hero : state.Villain;
state.Hero.IsToPlay = false;
state.Villain.IsToPlay = false;
state.ToPlay.IsToPlay = true;
traces.Enqueue(state.ToString());
break;
}
case Action.Raise50:
{
var raiseAmount = PotTools.GetRaiseAmount(
Wager.Half, state.Pot, state.WagerToCall);
var raise = state.ToPlay.Wager(raiseAmount);
state.WagerToCall = System.Math.Abs(raise - state.WagerToCall);
state.Pot += raise;
state.ToPlay = state.Hero.IsToPlay ?
state.Villain : state.Hero;
state.Hero.IsToPlay = false;
state.Villain.IsToPlay = false;
state.ToPlay.IsToPlay = true;
state.LastAction = Action.Raise50;
traces.Enqueue(state.ToString());
break;
}
case Action.Fold:
{
var investedAmount = state.GetInvestedAmount();
state.Street = Street.Fold;
state.WagerToCall = 0.0d;
state.LastAction = Action.Fold;
stateValue =
state.ToPlay.IsHero ? -investedAmount : investedAmount;
break;
}
}
}
return(stateValue);
}