Day 24 - parsing

Author: stevenhorsman

day-23-experimental-emergency-teleportation/test.js

@@ -8,7 +8,7 @@ const nanobots = require('./nanobots');
 const BoundingBox = nanobots.BoundingBox;
 const Point = nanobots.Point;
 
-describe.only('Day 23: Experimental Emergency Teleportation', () => {
+describe('Day 23: Experimental Emergency Teleportation', () => {
 
   describe('Part One', () => {
     it('should calculate range of nanobots', () => {

day-24-immune-system-simulator-simulator-20xx/immuneSystem.js

@@ -0,0 +1,69 @@
+const enumify = require('enumify');
+
+class AttackType extends enumify.Enum { }
+AttackType.initEnum(['SLASHING', 'RADIATION', 'FIRE', 'COLD', 'BLUDGEONING']);
+
+function getAttack(string) {
+  for (const d of AttackType.enumValues) {
+    if (d.name.toLowerCase() === string.toLowerCase()) {
+      return d;
+    }
+  }
+  throw new Error(['Weird type', string]);
+}
+
+class Group {
+  constructor(groupId, units, hitPoints, weaknesses, immunities, attack, attackType, initiative) {
+    this.id = groupId;
+    this.units = units;
+    this.hitPoints = hitPoints;
+    this.weaknesses = weaknesses;
+    this.immunities = immunities;
+    this.attack = attack;
+    this.attackType = attackType;
+    this.initiative = initiative;
+  }
+}
+
+function part1(input) {
+  let [immune, infection] = parseInput(input);
+
+  console.log('immune', immune);
+  console.log('infection', infection);
+}
+
+function parseInput(input) {
+  let lines = input.split(/\r?\n/).map(line => line = line.trim());
+  let immune = lines.slice(1,lines.indexOf(''));
+  let infection = lines.slice(lines.indexOf('')+2);
+
+  let groupId = 1;
+  immune = immune.map(line => createGroup(line, groupId++));
+  groupId = 1;
+  infection = infection.map(line => createGroup(line, groupId++));
+
+  return(immune, infection);
+}
+
+function createGroup(line, groupId) {
+  let result = line.match(/(\d+) units each with (\d+) hit points (\([^)]*\))? with an attack that does (\d+) (\w+) damage at initiative (\d+)/);
+  let weaknesses = [];
+  let immunities = [];
+  if(result[3].length > 2) {
+    let trimmed = result[3].substring(1, result[3].length-1).split(';');
+    trimmed.map(part => part.trim()).forEach(part => {
+      if (part.startsWith('weak to')) {
+        weaknesses = parseTypes(part.substring(7).trim());
+      } else if (part.startsWith('immune to')) {
+        immunities = parseTypes(part.substring(9).trim());
+      }
+    });
+  }
+  return new Group(groupId, result[1],result[2], weaknesses, immunities, result[4], getAttack(result[5]),result[6]);
+}
+
+function parseTypes(typeList) {
+  return typeList.split(',').map(type => getAttack(type.trim()));
+}
+
+module.exports.part1 = part1;

day-24-immune-system-simulator-simulator-20xx/input.txt

@@ -0,0 +1,23 @@
+Immune System:
+2208 units each with 6238 hit points (immune to slashing) with an attack that does 23 bludgeoning damage at initiative 20
+7603 units each with 6395 hit points (weak to radiation) with an attack that does 6 cold damage at initiative 15
+4859 units each with 5904 hit points (weak to fire) with an attack that does 12 cold damage at initiative 11
+1608 units each with 7045 hit points (weak to fire, cold; immune to bludgeoning, radiation) with an attack that does 31 radiation damage at initiative 10
+39 units each with 4208 hit points with an attack that does 903 radiation damage at initiative 7
+6969 units each with 9562 hit points (immune to slashing, cold) with an attack that does 13 slashing damage at initiative 3
+2483 units each with 6054 hit points (immune to fire) with an attack that does 20 cold damage at initiative 19
+506 units each with 3336 hit points with an attack that does 64 radiation damage at initiative 6
+2260 units each with 10174 hit points (weak to fire) with an attack that does 34 slashing damage at initiative 5
+2817 units each with 9549 hit points (immune to cold, fire; weak to bludgeoning) with an attack that does 31 cold damage at initiative 2
+
+Infection:
+3650 units each with 25061 hit points (weak to fire, bludgeoning) with an attack that does 11 slashing damage at initiative 12
+508 units each with 48731 hit points (weak to bludgeoning) with an attack that does 172 cold damage at initiative 13
+724 units each with 27385 hit points with an attack that does 69 radiation damage at initiative 1
+188 units each with 41786 hit points with an attack that does 416 bludgeoning damage at initiative 4
+3045 units each with 36947 hit points (weak to slashing; immune to fire, bludgeoning) with an attack that does 24 slashing damage at initiative 9
+7006 units each with 42545 hit points (immune to cold, slashing, fire) with an attack that does 9 fire damage at initiative 16
+853 units each with 55723 hit points (weak to cold, fire) with an attack that does 114 bludgeoning damage at initiative 17
+3268 units each with 43027 hit points (immune to slashing, fire) with an attack that does 25 slashing damage at initiative 8
+1630 units each with 47273 hit points (weak to cold, bludgeoning) with an attack that does 57 slashing damage at initiative 14
+3383 units each with 12238 hit points with an attack that does 7 radiation damage at initiative 18

day-24-immune-system-simulator-simulator-20xx/test.js

@@ -0,0 +1,44 @@
+const expect = require('chai').expect;
+const fs = require('fs');
+
+const immuneSystem = require('./immuneSystem');
+
+describe.only('Day 24: Immune System Simulator 20XX', () => {
+    
+  describe('Part One', () => {
+    it('should calculate largest area', () => {
+      const sample =
+      `Immune System:
+      17 units each with 5390 hit points (weak to radiation, bludgeoning) with an attack that does 4507 fire damage at initiative 2
+      989 units each with 1274 hit points (immune to fire; weak to bludgeoning, slashing) with an attack that does 25 slashing damage at initiative 3
+      
+      Infection:
+      801 units each with 4706 hit points (weak to radiation) with an attack that does 116 bludgeoning damage at initiative 1
+      4485 units each with 2961 hit points (immune to radiation; weak to fire, cold) with an attack that does 12 slashing damage at initiative 4`;
+      expect(immuneSystem.part1(sample)).to.equal(17);
+    });
+
+    it.skip('Input file should return', () => {
+      const input = fs.readFileSync('day-06-chronal-coordinates/input.txt').toString();
+      expect(immuneSystem.calculateLargestArea(input)).to.equal(5532);
+    });
+  });
+
+  describe.skip('Part Two', () => {
+    it('should calculate largest area', () => {
+      const coords =
+      `1, 1
+      1, 6
+      8, 3
+      3, 4
+      5, 5
+      8, 9`;
+      expect(immuneSystem.calculateAreaInDistance(coords,32)).to.equal(16);
+    });
+
+    it('Input file should return', () => {
+      const input = fs.readFileSync('day-06-chronal-coordinates/input.txt').toString();
+      expect(immuneSystem.calculateAreaInDistance(input, 10000)).to.equal(36216);
+    });
+  });
+});