/// <summary>
/// Gets the number of block tiles on the screen after the game is run.
/// </summary>
/// <param name="program">The Intcode program to run.</param>
/// <param name="cancellationToken">The cancellation token to use.</param>
/// <returns>
/// The number of block tiles on the screen.
/// </returns>
public static async Task <(long BlockTileCount, long Score)> PlayGameAsync(
string program,
CancellationToken cancellationToken)
{
long[] instructions = IntcodeVM.ParseProgram(program);
var vm = new IntcodeVM(instructions, 10_000)
{
Input = await ChannelHelpers.CreateReaderAsync(new[] { 2L }, cancellationToken),
};
if (!await vm.RunAsync(cancellationToken))
{
throw new PuzzleException("Failed to run program.");
}
var outputs = await vm.Output.ToListAsync(cancellationToken);
var grid = new Dictionary <Point, int>(outputs.Count);
long score = 0;
for (int i = 0; i < outputs.Count; i += 3)
{
long x = outputs[i];
long y = outputs[i + 1];
long tileId = outputs[i + 2];
if (x == 1 && y == 0)
{
score = tileId;
}
else
{
grid[new((int)x, (int)y)] = (int)tileId;
/// <summary>
/// Runs the specified Intcode program.
/// </summary>
/// <param name="program">The Intcode program to run.</param>
/// <param name="adjust">Whether to adjust the state for <c>1202 program alarm</c> before running.</param>
/// <param name="cancellationToken">The optional cancellation token to use.</param>
/// <returns>
/// The memory values of the program once run.
/// </returns>
public static async Task <IReadOnlyList <long> > RunProgramAsync(
string program,
bool adjust = false,
CancellationToken cancellationToken = default)
{
long[] instructions = IntcodeVM.ParseProgram(program);
if (adjust)
{
instructions[1] = 12;
instructions[2] = 2;
}
var vm = new IntcodeVM(instructions)
{
Input = await ChannelHelpers.CreateReaderAsync(new[] { 0L }, cancellationToken),
};
if (!await vm.RunAsync(cancellationToken))
{
throw new PuzzleException("Failed to run program.");
}
return(vm.Memory().ToArray());
}
/// <summary>
/// Runs the specified Intcode program as an asynchronous operation.
/// </summary>
/// <param name="program">The Intcode program to run.</param>
/// <param name="input">The input to the program.</param>
/// <param name="cancellationToken">The cancellation token to use.</param>
/// <returns>
/// The output of the program once run.
/// </returns>
internal static async Task <IReadOnlyList <long> > RunAsync(
IEnumerable <long> program,
long[] input,
CancellationToken cancellationToken)
{
var vm = new IntcodeVM(program)
{
Input = await ChannelHelpers.CreateReaderAsync(input, cancellationToken),
};
if (!await vm.RunAsync(cancellationToken))
{
throw new PuzzleException("Failed to run program.");
}
return(await vm.Output.ToListAsync(cancellationToken));
}
/// <summary>
/// Runs the specified Intcode program.
/// </summary>
/// <param name="program">The Intcode program to run.</param>
/// <param name="input">The input to the program.</param>
/// <param name="cancellationToken">The cancellation token to use.</param>
/// <returns>
/// The diagnostic code output by the program.
/// </returns>
public static async Task <long> RunProgramAsync(
string program,
long input,
CancellationToken cancellationToken)
{
long[] instructions = IntcodeVM.ParseProgram(program);
var vm = new IntcodeVM(instructions)
{
Input = await ChannelHelpers.CreateReaderAsync(new[] { input }, cancellationToken),
};
if (!await vm.RunAsync(cancellationToken))
{
throw new PuzzleException("Failed to run program.");
}
var outputs = await vm.Output.ToListAsync(cancellationToken);
return(outputs.Count == 0 ? 0 : outputs[^ 1]);