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Imperative Game of Life
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| function conwaysGameOfLife(board) { | |
| var newBoard = [] | |
| for (var i = 0; i < board.length; i++) { | |
| newBoard.push([]) | |
| for (var j = 0; j < board[i].length; j++) { | |
| newBoard[i].push(0) | |
| } | |
| } | |
| for (var i = 0; i < board.length; i++) { | |
| for (var j = 0; j < board[i].length; j++) { | |
| var neighbors = 0 | |
| if (i > 0 && j > 0 && board[i - 1][j - 1] === 1) { | |
| neighbors++ | |
| } | |
| if (i > 0 && board[i - 1][j] === 1) { | |
| neighbors++ | |
| } | |
| if (i > 0 && j < board[i].length - 1 && board[i - 1][j + 1] === 1) { | |
| neighbors++ | |
| } | |
| if (j > 0 && board[i][j - 1] === 1) { | |
| neighbors++ | |
| } | |
| if (j < board[i].length - 1 && board[i][j + 1] === 1) { | |
| neighbors++ | |
| } | |
| if (i < board.length - 1 && j > 0 && board[i + 1][j - 1] === 1) { | |
| neighbors++ | |
| } | |
| if (i < board.length - 1 && board[i + 1][j] === 1) { | |
| neighbors++ | |
| } | |
| if ( | |
| i < board.length - 1 && | |
| j < board[i].length - 1 && | |
| board[i + 1][j + 1] === 1 | |
| ) { | |
| neighbors++ | |
| } | |
| // if the cell is alive | |
| if (board[i][j] === 1) { | |
| // if the cell has 2 or 3 neighbors, it lives | |
| if (neighbors === 2 || neighbors === 3) { | |
| newBoard[i][j] = 1 | |
| } | |
| } else { | |
| // if the cell is dead | |
| // if the cell has 3 neighbors, it comes alive | |
| if (neighbors === 3) { | |
| newBoard[i][j] = 1 | |
| } | |
| } | |
| } | |
| } | |
| return newBoard | |
| } | |
| 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, 250)) | |
| } | |
| })() |
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