/// <summary>
/// Start the computer a single time, and return the last output.
/// </summary>
/// <param name="program">
/// A comma-separated string of integer instructions
/// </param>
/// <param name="inputs">Program inputs</param>
/// <returns>The last "output" value output by the computer</returns>
public static long Run(string program, params long[] inputs)
{
IntcodeComputer computer = new IntcodeComputer(program, inputs);
computer.Start();
return(computer.Output);
}
/// <summary>
/// Start the computer a single time, and return the last output.
/// </summary>
/// <param name="program">
/// An integer array instructions
/// </param>
/// <param name="inputs">Program inputs</param>
/// <returns>The last "output" value output by the computer</returns>
public static long Run(ref long[] program, params long[] inputs)
{
IntcodeComputer computer = new IntcodeComputer(program, inputs);
computer.Start();
program = computer.Program.ToArray();
return(computer.Output);
}
public override string A()
{
IntcodeComputer brain = new IntcodeComputer(Input);
int blocks = 0;
int index = 1;
brain.OnOutput += val => {
if (index++ % 3 == 0 && val == 2)
{
blocks++;
}
};
brain.Start();
return(blocks.ToString());
}
public override string B()
{
long score = 0;
long[] program = Input.Split(",").Select(long.Parse).ToArray();
program[0] = 2;
IntcodeComputer brain = new IntcodeComputer(program);
long ball = 0;
long paddle = 0;
int index = 0;
long lastX = 0;
brain.OnOutput += val => {
index++;
if (index == 1)
{
lastX = val;
}
else if (index == 3)
{
index = 0;
if (lastX == -1)
{
score = val;
}
else if (val == 3)
{
paddle = lastX;
}
else if (val == 4)
{
ball = lastX;
}
}
};
brain.WantsInput += () => paddle <ball ? 1 : paddle> ball ? -1 : 0;
brain.Start();
return(score.ToString());
}