public Direction GetNextDirection(Direction from)
{
Direction opposite = Board2D <Track> .Turn(from, Direction.Down);
Direction next = Directions.Where(d => d != opposite).First();
return(next);
}
private void Burst(Aoc.Framework.Part part)
{
Direction turnDirection = GetTurnDirection();
_direction = Board2D <Cell> .Turn(_direction, turnDirection);
Infect(part);
_position = Board2D <Int64> .MoveForward(_position, _direction);
}
public string Run(Aoc.Framework.Part part)
{
if (part == Aoc.Framework.Part.Part1)
{
Direction direction = Direction.Up;
Point position = new Point(0, 0);
foreach (string s in _input)
{
direction = Board2D <Int64> .Turn(direction, (s[0] == 'R')?Direction.Right : Direction.Left);
position = Board2D <Int64> .MoveForward(position, direction, Int32.Parse(s[1..]));
private long Paint(long initial)
{
long painted = 0;
_hull = new Board2D <long>();
_hull[0, 0] = initial;
_painted = new Board2D <bool>();
_direction = Direction.Up;
_position = new Point(0, 0);
_cpu.Reset(Aoc.Framework.Input.GetLongVector(this, ","));
_cpu.Input.Enqueue(_hull[_position.X, _position.Y]);
while (_cpu.State != IntCpu.RunningState.Halted)
{
_cpu.Run();
if (_cpu.State != IntCpu.RunningState.Halted)
{
if (!_painted[_position.X, _position.Y])
{
_painted[_position.X, _position.Y] = true;
painted++;
}
_hull[_position.X, _position.Y] = _cpu.Output.Dequeue();
long turn = _cpu.Output.Dequeue();
if (turn == 0)
{
_direction = Board2D <long> .Turn(_direction, Direction.Left);
}
if (turn == 1)
{
_direction = Board2D <long> .Turn(_direction, Direction.Right);
}
_position = Board2D <long> .MoveForward(_position, _direction);
_cpu.Input.Enqueue(_hull[_position.X, _position.Y]);
}
}
return(painted);
}
public Point Move(Point from, Board2D <Track> tracks)
{
// Move the cart
Point next = Board2D <Track> .MoveForward(from, Direction, 1, true);
// Change the direction if needed
Track cell = tracks[next.X, next.Y];
if (cell.IsIntersection)
{
Direction = Board2D <Track> .Turn(Direction, DirectionChooser[DirectionIndex]);
DirectionIndex = (DirectionIndex + 1) % DirectionChooser.Length;
}
else
{
// We need to follow the track
Direction = cell.GetNextDirection(Direction);
}
return(next);
}