private bool Move(LocationCoordinate newLocationCoordinate)
{
var newXCoordinate = currentLocationCoordinate.X + newLocationCoordinate.X;
var newYCoordinate = currentLocationCoordinate.Y + newLocationCoordinate.Y;
var newCoordinate = new LocationCoordinate {
X = newXCoordinate, Y = newYCoordinate
};
if (newXCoordinate < grid.LowerLeftLocationCoordinate.X ||
newXCoordinate > grid.UpperRightLocationCoordinate.X ||
newYCoordinate < grid.LowerLeftLocationCoordinate.Y ||
newYCoordinate > grid.UpperRightLocationCoordinate.Y)
{
throw new IllegalMoveLocation($"{Name} cannot be moved to location: {newCoordinate} with defined grid: {grid} - aborting {Name}");
}
if (grid.CheckForCollisions &&
rovers.Where(r => r.Name != this.Name).Any(r => r.PositionWithDirection.LocationCoordinate.ToString() == newCoordinate.ToString()))
{
throw new IllegalMoveLocationCoordinateAlreadyOccupied(
$"{Name} cannot be moved to location: {newCoordinate} as the move location already contains another Rover");
}
currentLocationCoordinate = newCoordinate;
return(true);
}
public Grid(LocationCoordinate gridUpperRightLocationCoordinate, bool checkForCollisions = false)
{
if (gridUpperRightLocationCoordinate == null ||
gridUpperRightLocationCoordinate.X != gridUpperRightLocationCoordinate.Y ||
gridUpperRightLocationCoordinate.X <= 0)
{
throw new ArgumentException("Grid X, Y upper right coordinates must be equal and greater than 0 - aborting");
}
UpperRightLocationCoordinate = gridUpperRightLocationCoordinate;
CheckForCollisions = checkForCollisions;
}
public Rover(LocationCoordinate startLocationCoordinate, CompassDirection compassStartDirection, IGrid grid)
{
if (startLocationCoordinate == null ||
startLocationCoordinate.X < 0 ||
startLocationCoordinate.Y < 0)
{
throw new ArgumentException($"Rover X, Y start coordinates must be greater than or equal to 0 - aborting {Name}");
}
this.grid = grid ?? throw new ArgumentException($"Rover grid argument cannot be null - aborting {Name}");
Name = $"Rover {Count + 1}";
currentLocationCoordinate = startLocationCoordinate;
currentCompassDirection = compassStartDirection;
PositionWithDirection = new PositionWithDirection
{
CompassDirection = currentCompassDirection,
LocationCoordinate = currentLocationCoordinate
};
rovers.Add(this);
}