public RobotCommand ExecuteTurn(RobotCommand command)
{
IsChanged = false;
Moves.Enqueue(command);
NeighborCache.Clear();
switch (command)
{
case RobotCommand.Up:
MoveRobotTo(RobotCommand.Up, RobotPosition.Up());
break;
case RobotCommand.Down:
MoveRobotTo(RobotCommand.Down, RobotPosition.Down());
break;
case RobotCommand.Left:
MoveRobotTo(RobotCommand.Left, RobotPosition.Left());
break;
case RobotCommand.Right:
MoveRobotTo(RobotCommand.Right, RobotPosition.Right());
break;
case RobotCommand.Abort:
State = MapState.Aborted;
Score = AbortScore;
break;
case RobotCommand.Shave:
for (int dy = -1; dy < 2; dy++)
{
for (int dx = -1; dx < 2; dx++)
{
if (Cell.At(RobotPosition.X + dx, RobotPosition.Y + dy).IsBeard())
{
Cell.Set(RobotPosition.X + dx, RobotPosition.Y + dy, CellType.Empty);
IsChanged = true;
}
}
}
break;
}
if (State == MapState.Valid)
{
Score -= 1;
Simulate();
}
return(command);
}
public Point[] Neighbors(Point point)
{
if (Cell.At(point).IsTrampoline())
{
point = Trampolines[point];
}
Point[] cachedNeighbors;
if (NeighborCache.TryGetValue(point, out cachedNeighbors))
{
return(cachedNeighbors);
}
var neighbors = new List <Point>();
if (Cell.IsValidMove(point, point.Up()))
{
neighbors.Add(point.Up());
}
if (Cell.IsValidMove(point, point.Down()))
{
neighbors.Add(point.Down());
}
if (Cell.IsValidMove(point, point.Left()))
{
neighbors.Add(point.Left());
}
if (Cell.IsValidMove(point, point.Right()))
{
neighbors.Add(point.Right());
}
NeighborCache.Add(point, neighbors.ToArray());
return(neighbors.ToArray());
}
