Day 20 (WIP)

src/main/kotlin/com/basdado/adventofcode/Day20.kt

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+package com.basdado.adventofcode
+
+import java.util.*
+
+const val DAY20_INPUT = "/day/20/example1.txt"
+
+fun main() {
+
+    val day = Day20()
+    day.puzzle1()
+}
+
+class Day20 {
+
+    fun puzzle1() {
+
+        val input = lines(DAY20_INPUT).findFirst().get()
+]
+        val rooms = mutableListOf(Room(Vector2(0, 0), mutableListOf()))
+        val bracketStarts = Stack<Room>()
+        var currentRoom = rooms[0]
+
+        for(c in input) {
+            if (c == '^') {
+                continue
+            }
+
+            if (c == '(') {
+                bracketStarts.push(currentRoom)
+            }
+
+            if (c == '|') {
+                currentRoom = bracketStarts.pop()
+            }
+        }
+
+
+    }
+
+    class Room(val pos: Vector2, val connections: MutableList<Room>)
+
+    data class Vector2(val x: Long, val y: Long) {
+        fun move(c: Char): Vector2 {
+            return when(c) {
+                'N' -> Vector2(x, y - 1)
+                'E' -> Vector2(x + 1, y)
+                'S' -> Vector2(x, y + 1)
+                'W' -> Vector2(x - 1, y)
+
+            }
+        }
+    }
+}

src/main/resources/day/20/example1.txt

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+^ESSWWN(E|NNENN(EESS(WNSE|)SSS|WWWSSSSE(SW|NNNE)))$

src/main/resources/day/20/example2.txt

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+^WSSEESWWWNW(S|NENNEEEENN(ESSSSW(NWSW|SSEN)|WSWWN(E|WWS(E|SS))))$