/// <summary>
/// Parses a specification of search time in UCI format into an equivalent SearchLimit.
/// Returns null if parsing failed.
/// </summary>
/// <param name="command"></param>
/// <returns></returns>
private SearchLimit GetSearchLimit(string command)
{
bool weAreWhite = curPositionAndMoves.FinalPosition.MiscInfo.SideToMove == SideType.White;
UCIGoCommandParsed goInfo = new UCIGoCommandParsed(command, weAreWhite);
if (!goInfo.IsValid)
{
return(null);
}
if (goInfo.Nodes.HasValue)
{
return(SearchLimit.NodesPerMove(goInfo.Nodes.Value));
}
else if (goInfo.MoveTime.HasValue)
{
return(SearchLimit.SecondsPerMove(goInfo.MoveTime.Value / 1000.0f));
}
else if (goInfo.Infinite)
{
// TODO: determine a reasonable maximum value based on memory in computer
return(SearchLimit.NodesPerMove(MCTSNodeStore.MAX_NODES));
}
else if (goInfo.TimeOurs.HasValue)
{
float increment = 0;
if (goInfo.IncrementOurs.HasValue)
{
increment = goInfo.IncrementOurs.Value / 1000.0f;
}
int?movesToGo = null;
if (goInfo.MovesToGo.HasValue)
{
movesToGo = goInfo.MovesToGo.Value;
}
return(SearchLimit.SecondsForAllMoves(goInfo.TimeOurs.Value / 1000.0f, increment, movesToGo, true));
}
else
{
Console.WriteLine($"Unsupported time control in UCI go command {command}");
return(null);
}
}
/// <summary>
/// Parses a specification of search time in UCI format into an equivalent SearchLimit.
/// Returns null if parsing failed.
/// </summary>
/// <param name="command"></param>
/// <returns></returns>
private SearchLimit GetSearchLimit(string command)
{
SearchLimit searchLimit;
bool weAreWhite = curPositionAndMoves.FinalPosition.MiscInfo.SideToMove == SideType.White;
UCIGoCommandParsed goInfo = new UCIGoCommandParsed(command, weAreWhite);
if (!goInfo.IsValid)
{
return(null);
}
if (goInfo.Nodes.HasValue)
{
searchLimit = SearchLimit.NodesPerMove(goInfo.Nodes.Value);
}
else if (goInfo.MoveTime.HasValue)
{
searchLimit = SearchLimit.SecondsPerMove(goInfo.MoveTime.Value / 1000.0f);
}
else if (goInfo.Infinite)
{
searchLimit = SearchLimit.NodesPerMove(MCTSNodeStore.MAX_NODES);
}
else if (goInfo.TimeOurs.HasValue)
{
float increment = 0;
if (goInfo.IncrementOurs.HasValue)
{
increment = goInfo.IncrementOurs.Value / 1000.0f;
}
int?movesToGo = null;
if (goInfo.MovesToGo.HasValue)
{
movesToGo = goInfo.MovesToGo.Value;
}
searchLimit = SearchLimit.SecondsForAllMoves(goInfo.TimeOurs.Value / 1000.0f, increment, movesToGo, true);
}
else if (goInfo.NodesOurs.HasValue)
{
float increment = 0;
if (goInfo.IncrementOurs.HasValue)
{
increment = goInfo.IncrementOurs.Value;
}
int?movesToGo = null;
if (goInfo.MovesToGo.HasValue)
{
movesToGo = goInfo.MovesToGo.Value;
}
searchLimit = SearchLimit.NodesForAllMoves(goInfo.NodesOurs.Value, (int)increment, movesToGo, true);
}
else
{
UCIWriteLine($"Unsupported time control in UCI go command {command}");
return(null);
}
// Add on possible search moves restriction.
return(searchLimit with {
SearchMoves = goInfo.SearchMoves
});
}
