Day 17: Conway Cubes / Visnu Pitiyanuvath

Visnu Pitiyanuvath

Workspace

Published

Advent of Code 2020

Edited

Dec 17, 2020

1 fork

1 star

function* neighbors([x, y, z, w]) {

for (let dx of [-1, 0, 1])

for (let dy of [-1, 0, 1])

for (let dz of [-1, 0, 1])

for (let dw of [-1, 0, 1])

if (dx !== 0 || dy !== 0 || dz !== 0 || dw !== 0)

yield [x + dx, y + dy, z + dz, w + dw]

}

function tick(cells) {

let counts = {}

for (const cell of cells)

for (const n of neighbors(cell.split(',').map(Number)))

counts[n] = (counts[n] || 0) + 1

let next = new Set()

for (const [cell, count] of Object.entries(counts))

if (count === 3 || (count == 2 && cells.has(cell)))

next.add(cell)

return next

}

seed = new Set(input.trim().split('\n')

.flatMap((l, x) => l.split('').map((v, y) => v === '#' ? [x, y, 0, 0] : null))

.filter(d => d)

.map(String))

fps = 5

zoom = 10

alive = {

let cells = seed

for (let n = 0; n < 6; n++) {

yield Promises.tick(1000/fps, cells = tick(cells))

}

// alive = {

// let cells = this || seed

// while (true) {

// if (fps === 0)

// return yield cells

// yield Promises.tick(1000/fps, cells = tick(cells))

// }

d3 = require('d3@6')

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