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Slightly Functional Game of Life
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| function boardGet(arr, i, j) { | |
| if (i < 0 || j < 0 || i >= arr.length || j >= arr[i].length) { | |
| return 0 | |
| } | |
| return arr[i][j] | |
| } | |
| function countNeighbors(board, i, j) { | |
| return ( | |
| boardGet(board, i - 1, j - 1) + | |
| boardGet(board, i - 1, j) + | |
| boardGet(board, i - 1, j + 1) + | |
| boardGet(board, i, j - 1) + | |
| boardGet(board, i, j + 1) + | |
| boardGet(board, i + 1, j - 1) + | |
| boardGet(board, i + 1, j) + | |
| boardGet(board, i + 1, j + 1) | |
| ) | |
| } | |
| function isAlive(cell) { | |
| return cell === 1 | |
| } | |
| function shouldSurvive(cell, neighbors) { | |
| if(isAlive(cell) && neighbors === 2 || neighbors === 3) return 1 | |
| if(!isAlive(cell) && neighbors === 3) return 1 | |
| return 0 | |
| } | |
| function conwaysGameOfLife(board) { | |
| return board.map((row, i) => row.map((cell, j) => shouldSurvive(cell, countNeighbors(board, i, j)))) | |
| } | |
| var board = Array.from({ length: 50 }, () => | |
| Array.from({ length: 50 }, () => Math.round(Math.random())) | |
| ) | |
| ;(async () => { | |
| let x = 1000 | |
| for (let i = 0; i < x; i++) { | |
| console.clear() | |
| board = conwaysGameOfLife(board) | |
| console.log(board.map((i) => i.join(" ")).join("\n")) | |
| await new Promise((resolve) => setTimeout(resolve, 50)) | |
| } | |
| })() |
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