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Langton's ant: Difference between revisions
Updated first D entry
(Updated first D entry) |
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Line 735:
=={{header|D}}==
===Textual Version===
<lang d>import std.stdio, std.algorithm, std.traits
void main() {
enum width = 75, height = 52;
enum
enum Direction { up, right, down, left }
enum Color : char { white = '.', black = '#' }
uint x = width / 2, y = height / 2;
auto M = new Color[][](height, width);
auto dir = Direction.up;
for (int i = 0; i <
immutable turn = M[y][x] == Color.black;
dir = [EnumMembers!Direction][(dir + (turn ? 1 : -1)) & 3];
M[y][x] = (M[y][x] == Color.black) ? Color.white : Color.black;
final switch(dir) with (Direction) {
case up: y--; break;
case right: x++; break;
case down: y++; break;
case left: x--; break;
}
}
}</lang>
{{out}}
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===Image Version===
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