71 lines
1.9 KiB
TypeScript
71 lines
1.9 KiB
TypeScript
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import { solvables } from "../main.ts";
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import type { Solvable } from "../solvable.ts";
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import { readInput } from "../utils.ts";
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type Direction = "up" | "down" | "left" | "right"
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class DaySix implements Solvable {
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input: string[][] = readInput('06').split('\n').map(col => col.split(''))
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map = this.input
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visitedLoc = new Map()
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// assigned in part1
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startingPosition: [number, number] = [0, 0]
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takeStep = (x: number, y: number, direction: Direction): [number, number] => {
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switch (direction) {
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case 'up':
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return [x, y + 1]
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case 'down':
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return [x, y - 1]
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case 'right':
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return [x + 1, y]
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case 'left':
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return [x + 1, y]
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}
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}
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walk = (x: number, y: number, direction: Direction): [boolean, number, number, Direction] => {
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const nextStepInBounds = {
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up: y > 1,
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down: y < this.map.length,
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left: x > 1,
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right: x < this.map.length,
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}
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if (!nextStepInBounds[direction]) {
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return [true, x, y, direction]
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} else {
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// TODO check for obstacles
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const [newX, newY] = this.takeStep(x, y, direction)
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return [false, newX, newY, direction]
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}
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}
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public part1(): Solvable {
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// find starting position
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this.input.forEach((line, y) => line.forEach((col, x) => { if (col === '^') this.startingPosition = [y, x] }))
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let [x, y] = [this.startingPosition[0], this.startingPosition[1]]
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let direction: Direction = 'up'
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let outOfBounds = false
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while (!outOfBounds) {
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[outOfBounds, x, y, direction] = this.walk(x, y, direction)
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}
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console.log()
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return this
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}
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public part2(): Solvable {
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console.log()
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return this
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}
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}
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solvables.push(new DaySix())
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