JS1k 2010 - 190 - Details - A ground breaking JavaScript golfing competition

Author:

fearphage

Twitter:

GitHub:

Facebook:

Google+:

Reddit:

/r/

Pouet:

Website:

my.opera.com/fearphage

Compo:

classic

Demo link:

https://js1k.com/2010-first/demo/190

Shortlink:

https://js1k.com/190

Blog post:

please update here!

Bytes:

826

Chars:

826

Submission

(function(window, document) {
	var canvas = document.body.children[0], context = canvas.getContext('2d'), map = [], size = 1e4, i = size, scale = 4, hundred = 1e2, side = canvas.height = canvas.width = scale * hundred, x, j, next;
	
	while (i--) { map.push(Math.random() > .8 ? 1 : 0); }

	function check(cell) {
		return map[cell] | 0;
	}
	
	setInterval(function() {
		next = map.slice(), i = j = size;
		while (i--) {
			next[x = check(i -101) + check(i -hundred) + check(i -99) + check(i -1) + check(i +1) + check(i +99) + check(i +hundred) + check(i +101),i] = x == 3 || (map[i] & 1 && x == 2) ? 1 : 0;
		}
		map = next;
		context.clearRect(0, 0, side, side);

		while (j--) {
			map[j] & 1 && context.fillRect(j / hundred *scale, (j % hundred) *scale, scale, scale);
		}
	}, 1e3);
})(this, document);

Description

This is a basic implementation of Conway's Game of Life that is a representation of cell automation. http://en.wikipedia.org/wiki/Conway's_Game_of_Life Every cell is either alive or dead (1 or 0 respectively). The basic concept of the game is based on the following rules: 1. If a living cell has less than 2 neighbors, it dies. 2. If a living cell has more than 3 neighbors, it dies. 3. If a living cell has 2-3 neighbors, it lives. 4. If a dead cell has exactly 3 neighbors, it come alive. Every generation is absed on the previous generation of cells. Note: There is currently no interactivity in this version.

Base64 encoded

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Original source

Original source not submitted

JS1k: The JavaScript code golfing competition

2010 - The Original