private long RunAmplifiersWithFeedback(IEnumerable <long> code, IEnumerable <int> phaseSettings)
{
IntCodeAsync[] amplifiers = new IntCodeAsync[5];
AsyncQueue <long>[] ports = new AsyncQueue <long> [5];
int i = 0;
for (i = 0; i < 5; i++)
{
amplifiers[i] = new IntCodeAsync(code);
ports[i] = new AsyncQueue <long>();
}
i = 0;
foreach (int phaseSetting in phaseSettings)
{
ports[i++].Enqueue(phaseSetting);
}
ports[0].Enqueue(0);
for (i = 0; i < amplifiers.Length; i++)
{
amplifiers[i].Reader = ports[i].Dequeue;
}
for (i = 0; i < amplifiers.Length - 1; i++)
{
amplifiers[i].Writer = ports[i + 1].Enqueue;
}
long answer = 0;
amplifiers[^ 1].Writer = (value) =>
public IntCodeShell(IEnumerable <long> program, TextReader reader, TextWriter writer)
{
_intCode = new IntCodeAsync(
program,
Read,
Write);
_reader = reader;
_writer = writer;
}
public Day15()
{
AsyncQueue <long> programInputs = new AsyncQueue <long>();
AsyncQueue <long> programOutputs = new AsyncQueue <long>();
IntCodeAsync intCode = new IntCodeAsync(_program, programInputs.Dequeue, programOutputs.Enqueue);
Task vm = Task.Run(intCode.RunAsync);
Task <long> sendCommand(Direction d)
{
programInputs.Enqueue((long)d + 1);
return(programOutputs.Dequeue());
}
async Task backtrackHelper(IntVec2 position)
{
foreach (Direction d in s_directions)
{
IntVec2 candidatePosition = position + s_deltas[(int)d];
if (!_map.ContainsKey(candidatePosition))
{
Status status = (Status) await sendCommand(d);
if (status != Status.Wall)
{
_map.Add(candidatePosition, status);
if (status == Status.Oxygen)
{
_oxygen = candidatePosition;
}
await backtrackHelper(candidatePosition);
await sendCommand(s_opposites[(int)d]);
}
}
}
}
Task.Run(() => backtrackHelper(IntVec2.Zero)).Wait();
}
