/// <summary>
/// Execute a given command, when command is executed it is removed from the list and a new state is saved into history.
/// For fun I've added collision detection with edges and other rovers
/// </summary>
/// <param name="enableCollision">Will throw <see cref="ExceptionCollision"/> if there's a collision</param>
/// <param name="otherRovers">used for collision detection</param>
public void Execute(Utils.Command cmd, bool enableCollision, Rovers otherRovers)
{
Utils.Orientation nextOrientation =
cmd == Utils.Command.Left ? Utils.RotateLeft(this.CurrentState.Orientation) :
cmd == Utils.Command.Right ? Utils.RotateRight(this.CurrentState.Orientation) :
this.CurrentState.Orientation;
int dX = cmd == Utils.Command.Move ?
this.CurrentState.Orientation == Utils.Orientation.East ? +1 :
this.CurrentState.Orientation == Utils.Orientation.West ? -1 :
0 : 0;
int dY = cmd == Utils.Command.Move ?
this.CurrentState.Orientation == Utils.Orientation.North ? +1 :
this.CurrentState.Orientation == Utils.Orientation.South ? -1 :
0 : 0;
this.CurrentState = new RoverState(this.CurrentState.X + dX, this.CurrentState.Y + dY, nextOrientation);
StateHistory.Add(this.CurrentState);
if (enableCollision && (
this.CurrentState.X <= 0 ||
this.CurrentState.X >= w ||
this.CurrentState.Y <= 0 ||
this.CurrentState.Y >= h ||
otherRovers != null && otherRovers.Any((rover) => rover != this && rover.CurrentState == this.CurrentState)
))
{
throw new ExceptionCollision(this);
}
}
public Plateau(int width, int height, Rovers rovers)
{
if (width <= 0 || height <= 0 || rovers == null || rovers.Count() == 0)
{
throw new Exception("Invalid parameters");
}
this.Width = width;
this.Height = height;
this.Rovers = rovers;
}