private int?GetHorizontalVerticalDirectionIndicator(string to)
{
if (LocationToNumberMapper.ContainsKey(to))
{
var valueFrom = LocationToNumberMapper[CurrentLocation];
var valueTo = LocationToNumberMapper[to];
var diff = valueTo - valueFrom;
if (diff < 0 && diff % UP_INDICATOR == 0)
{
return(UP_INDICATOR);
}
if (diff > 0 && diff % DOWN_INDICATOR == 0)
{
return(DOWN_INDICATOR);
}
if (diff < 0 && CurrentLocation[1] == to[1])
{
return(LEFT_INDICATOR);
}
if (diff > 0 && CurrentLocation[1] == to[1])
{
return(RIGHT_INDICATOR);
}
return(null);
}
throw new InvalidFieldException($"Destination field [{to}] doesn't exist!");
}
private bool CanMoveHorizontally(IBoard board, string to, int directionIndicator)
{
if (LocationToNumberMapper.ContainsKey(to))
{
return(IsHorizontalMoveValid(to, _validHorizontalMoves) && !IsCollisionOnPath(board, to, directionIndicator));
}
return(false);
}
private bool CanMakeMoveToDestination(string field)
{
if (LocationToNumberMapper.ContainsKey(field))
{
var valueFrom = LocationToNumberMapper[CurrentLocation];
var valueTo = LocationToNumberMapper[field];
foreach (var validMove in _validMoves)
{
if (valueTo - valueFrom == validMove)
{
return(true);
}
}
}
return(false);
}
private bool IsHorizontalMoveValid(string to, IEnumerable <int> validMoves)
{
if (LocationToNumberMapper.ContainsKey(to))
{
var valueFrom = LocationToNumberMapper[CurrentLocation];
var valueTo = LocationToNumberMapper[to];
foreach (var validMove in validMoves)
{
if (Math.Abs(valueTo - valueFrom) == validMove)
{
return(true);
}
}
}
return(false);
}
private bool IsMoveValid(string to)
{
if (LocationToNumberMapper.ContainsKey(to))
{
var valueFrom = LocationToNumberMapper[CurrentLocation];
var valueTo = LocationToNumberMapper[to];
foreach (var validMove in _validMoves)
{
if (valueTo - valueFrom == validMove)
{
return(true);
}
}
}
return(false);
}
public override bool CanAttackField(IBoard board, string to)
{
if (LocationToNumberMapper.ContainsKey(to))
{
var locationDifference = LocationToNumberMapper[to] - LocationToNumberMapper[CurrentLocation];
switch (Math.Abs(locationDifference))
{
case CAPTURE1_MOVE_DIFFERENCE:
case CAPTURE2_MOVE_DIFFERENCE:
return(GetColor() == Color.White ? locationDifference < 0 : locationDifference > 0);
default:
return(false);
}
}
return(false);
}
private bool IsMoveValid(IBoard board, string to)
{
if (LocationToNumberMapper.ContainsKey(to))
{
if (board.GetChessman(to)?.GetColor() == GetColor())
{
return(false);
}
var locationDifference = LocationToNumberMapper[to] - LocationToNumberMapper[CurrentLocation];
switch (Math.Abs(locationDifference))
{
case NORMAL_MOVE_DIFFERENCE:
if (board.GetChessman(to) != null)
{
return(false);
}
return(GetColor() == Color.White ? locationDifference < 0 : locationDifference > 0);
case CAPTURE1_MOVE_DIFFERENCE:
case CAPTURE2_MOVE_DIFFERENCE:
if (board.GetChessman(to) == null)
{
return(false);
}
return(board.GetChessman(to).GetColor() != GetColor() && GetColor() == Color.White ? locationDifference < 0 : locationDifference > 0);
case FIRST_MOVE_DIFFERENCE:
if (!IsFirstMove)
{
return(false);
}
return(GetColor() == Color.White ? locationDifference < 0 : locationDifference > 0 && IsPrecedingFieldEmpty(board, GetColor()));
default:
return(false);
}
}
return(false);
}
