// check Rover wont crash into another
public void CheckRoverMoveIsPossible(Rover rover, Direction moveDirection, int steps)
{
var otherRoverQuery = ActiveRovers.Where(x => x != rover);
if (moveDirection == Direction.East || moveDirection == Direction.West)
{
// if moving horizontally, for there to be a crash must be on same Y positin
otherRoverQuery = otherRoverQuery.Where(x => x.Y == rover.Y);
if (moveDirection == Direction.East)
{
otherRoverQuery = otherRoverQuery.Where(x => x.X > rover.X && x.X <= (rover.X + steps));
}
else
{
otherRoverQuery = otherRoverQuery.Where(x => x.X < rover.X && x.X >= (rover.X - steps));
}
}
else
{
otherRoverQuery = otherRoverQuery.Where(x => x.X == rover.X);
if (moveDirection == Direction.North)
{
otherRoverQuery = otherRoverQuery.Where(x => x.Y > rover.Y && x.Y <= (rover.Y + steps));
}
else
{
otherRoverQuery = otherRoverQuery.Where(x => x.Y < rover.Y && x.Y >= (rover.Y - steps));
}
}
var anyRovers = otherRoverQuery.Count();
if (anyRovers > 0)
{
throw new Exception("CRASH");
}
}
public void AddRover(Rover rover)
{
ActiveRovers.Add(rover);
}
