57 lines
1.2 KiB
OCaml
57 lines
1.2 KiB
OCaml
let w = [|
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" ......tH ";
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" . ...... ";
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" ...Ht... . ";
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" .... ";
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" . ..... ";
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" .... ";
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" tH...... . ";
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" . ...... ";
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" ...Ht... ";
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|]
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let is_head w x y =
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try if w.(x).[y] = 'H' then 1 else 0
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with _ -> 0
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let neighborhood_heads w x y =
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let n = ref 0 in
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for _x = pred x to succ x do
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for _y = pred y to succ y do
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n := !n + (is_head w _x _y)
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done;
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done;
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(!n)
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let step w =
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let n = Array.init (Array.length w) (fun i -> String.copy w.(i)) in
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let width = Array.length w
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and height = String.length w.(0)
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in
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for x = 0 to pred width do
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for y = 0 to pred height do
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n.(x).[y] <- (
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match w.(x).[y] with
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| ' ' -> ' '
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| 'H' -> 't'
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| 't' -> '.'
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| '.' ->
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(match neighborhood_heads w x y with
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| 1 | 2 -> 'H'
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| _ -> '.')
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| _ -> assert false)
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done;
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done;
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(n)
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let print = (Array.iter print_endline)
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let () =
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let rec aux w =
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Unix.sleep 1;
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let n = step w in
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print n;
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aux n
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in
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aux w
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