Langton's ant: Difference between revisions

<lang ruby>define dirs = [[1,0], [0,-1], [-1,0], [0,1]];

define size = 100;

enum |White, Black|;

var plane = size.of { size.of (White) };

var (x, y) = @|([size/2 -> int]*2);

var dir = dirs.len.rand.int;irand

var moves = 0;

(x >= 0) && (y >= 0) && (x < size) && (y < size) || break;

++moves;

[\x, \y]:dirs[dir %= dirs.len] -> each {|a,b| *a += b };

say "Out of bounds after #{moves} moves at (#{x}, #{y})";

plane.map{.map {|square| square == Black ? '#' : '.' }}.each{.join.say};</lang>