var cell_size = 7; var SIZE = 300; function setup() { createCanvas(350, 600); stroke(0, 0, 0); numX = width / cell_size; numY = height / cell_size; cells = []; for (var i = 0; i < numX; i++) { cells[i] = []; for (var j = 0; j < numY; j++) { cells[i][j] = floor(random() * 2); } } initialize(); generation = 0; drawCells(); } function draw() { rule(); generation++; drawCells(); } var cells; var numX; var numY; var generation; function initialize() { for (var i = 0; i < numX; i++) { for (var j = 0; j < numY; j++) { cells[i][j] = floor(random() * 2); } } } function drawCells() { for (var i = 0; i < numX; i++) { for (var j = 0; j < numY; j++) { if (cells[i][j] == 1) fill(random(0, 255),120, 210, 120); if (cells[i][j] == 0) fill(0, 0, 0); rect(i * cell_size, j * cell_size, cell_size, cell_size); } } } function rule(random) { var temp = []; for (var i = 0; i < numX; i++) { temp[i] = []; for (var j = 0; j < numX; j++) { temp[i][j] = 0; } } for (var i = 1; i < numX - 1; i++) { for (var j = 1; j < numY - 1; j++) { var neighbors = 0; if (cells[i - 1][j - 1] == 1) neighbors++; if (cells[i ][j - 1] == 1) neighbors++; if (cells[i + 1][j - 1] == 1) neighbors++; if (cells[i - 1][j ] == 1) neighbors++; if (cells[i + 1][j ] == 1) neighbors++; if (cells[i - 1][j + 1] == 1) neighbors++; if (cells[i ][j + 1] == 1) neighbors++; if (cells[i + 1][j + 1] == 1) neighbors++; if (cells[i][j] == 1) { if (neighbors == 0 || neighbors == 1) temp[i][j] = 0; if (neighbors == 2 || neighbors == 3) temp[i][j] = 1; if (neighbors >= 4) temp[i][j] = 0; } if (cells[i][j] == 0) { if (neighbors == 3) temp[i][j] = 1; } } } for (var i = 0; i < numX; i++) { for (var j = 0; j < numY; j++) { cells[i][j] = temp[i][j]; } } }