Day25.java

package com.sbaars.adventofcode.year19.days;

import com.sbaars.adventofcode.year19.Day2019;
import com.sbaars.adventofcode.year19.intcode.IntcodeComputer;
import com.sbaars.adventofcode.year19.intcode.RetentionPolicy;

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class Day25 extends Day2019 {

  public Day25() {
    super(25);
  }

  public static void main(String[] args) {
    new Day25().play();
  }

  private void play() {
    IntcodeComputer ic = new IntcodeComputer(RetentionPolicy.EXIT_ON_EMPTY_INPUT, dayNumbers(","));
    while (true) {
      long res;
      while ((res = ic.run()) != IntcodeComputer.STOP_CODE) System.out.print((char) res);
      try {
        ic.setInput(new BufferedReader(new InputStreamReader(System.in)).readLine() + "\n");
      } catch (Exception ignored) {
      }
    }
  }

  @Override
  public Object part1() {
    IntcodeComputer ic = new IntcodeComputer(RetentionPolicy.EXIT_ON_EMPTY_INPUT, dayNumbers(","));
    String[] inputs = new String[]{"west", "take semiconductor", "west", "take planetoid", "west", "take food ration", "west", "take fixed point", "east", "east", "south", "east", "east", "north", "east", "north"};
    String numbers = "";
    for (int i = 0; i <= inputs.length; i++) {
      long res;
      while ((res = ic.run()) != IntcodeComputer.STOP_CODE) {
        if (Character.isDigit((char) res)) numbers += (char) res;
      }
      if (i == inputs.length) return numbers.substring(1);
      ic.setInput(inputs[i] + "\n");
    }
    return 0;
  }

  @Override
  public Object part2() {
    return "MERRY CHRISTMAS!!";
  }
}