Langton's ant: Difference between revisions
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Added Sidef language
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=={{header|Sidef}}==
{{trans|Perl 6}}
<lang ruby># Using screen coordinates - 0,0 in upper-left, +X right, +Y down -
# these directions (right, up, left, down) are counterclockwise
# so advance through the array to turn left, retreat to turn right
const dirs = [[1,0], [0,-1], [-1,0], [0,1]];
const size = 100;
enum |White, Black|;
# initialize the plane with white values
var plane = [];
{|i| plane[i-1] = [White]*size} * size;
# start out in approximate middle
[size/2->to_i]*2 » (\var x, \var y);
# point in a random direction
var dir = dirs.len.rand.int;
# initialize the moves counter
var moves = 0;
while true {
(x >= 0) && (y >= 0) && (x < size) && (y < size) || break;
given(plane[x][y])
when (White) do {
dir--; plane[x][y] = Black;
}
when (Black) do {
dir++; plane[x][y] = White;
}
end;
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>
=={{header|Tcl}}==
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