+module Automaton : sig
+ type t
+
+ val create : rows:int -> columns:int -> interval:float -> t
+
+ val loop : t -> unit
+end = struct
+ type t = { grid : Conway.t Matrix.t
+ ; interval : Time.Span.t
+ ; bar : string
+ }
+
+ let create ~rows:rs ~columns:ks ~interval =
+ { grid = Matrix.map ~f:Conway.create (Matrix.create ~rs ~ks ())
+ ; interval = Time.Span.of_float interval
+ ; bar = String.make ks '-'
+ }
+
+ let print t =
+ print_endline t.bar;
+ Matrix.print t.grid ~to_string:Conway.to_string;
+ print_endline t.bar
+
+ let next t =
+ let grid =
+ Matrix.mapi t.grid ~f:(
+ fun point cell ->
+ let neighbors = Matrix.get_neighbors t.grid point in
+ Conway.react cell ~states:(List.map neighbors ~f:Conway.state)
+ )
+ in
+ {t with grid}
+
+ let rec loop t =
+ print t;
+ Time.pause t.interval;
+ loop (next t)
+end
+
+
+let main () =