// true if any such piece in zone
internal bool IsOccupied(PlayerKinds kind, PieceValue piece, ZoneValue zone)
{
if (zone == null)
{
return(PositionIter().Any(p => IsOccupied(kind, piece, p)));
}
return(Def.PositionIter(zone, CurrentPlayer).Any(p => IsOccupied(kind, piece, p)));
}
internal static PolyZone Create(ZoneValue name, PlayerValue player, IEnumerable <PositionValue> positions)
{
return(new PolyZone {
Name = name.Value,
Player = player.Value,
Positions = positions.Select(p => p.Value).OrderBy(p => p).Join(" "),
});
}
IEnumerable <PositionValue> PositionIter(PlayerValue player, ZoneValue zone)
{
return(Def.ZoneLookup.SafeLookup(Pair.Create(zone, player)));
}
internal bool InZone(ZoneValue zone, PositionValue position)
{
return(IsValid(position) &&
Def.InZone(zone, CurrentPlayer, position));
}
// iterate positions for zone and player
internal IEnumerable <PositionValue> PositionIter(ZoneValue zone, PlayerValue player)
{
return(ZoneLookup[Pair.Create(zone, player)]);
}
// enquiry functions
internal bool InZone(ZoneValue zone, PlayerValue player, PositionValue position)
{
var z = ZoneLookup.SafeLookup(Pair.Create(zone, player));
return(z != null && z.Contains(position));
}
void s_Name(ZoneValue name)
{
_zone.Name = name;
}
BoolValue s_NotInZone_(ZoneValue zone, PositionOrDirection posordir = null)
{
return(s_Not(s_InZone_(zone, posordir)));
}
BoolValue s_InZone_(ZoneValue zone, PositionOrDirection posordir = null)
{
return(BoolValue.Create(_board.InZone(zone, ToPosition(posordir))));
}
