X-Git-Url: https://git.xandkar.net/?a=blobdiff_plain;f=polymorphic-life%2F001%2Fsrc%2Fpolymorphic_life.ml;h=e08dc2acd8978d16bd06b0ddd15b2596c1379239;hb=a1665c9210867ffc55a4a609885d1d4cba840dbd;hp=1afd1fed708e4e00234eaf7e5b6520243bc12466;hpb=63fe855dfac550cf84d839715edc4975a5d9a02b;p=cellular-automata.git

diff --git a/polymorphic-life/001/src/polymorphic_life.ml b/polymorphic-life/001/src/polymorphic_life.ml
index 1afd1fe..e08dc2a 100644
--- a/polymorphic-life/001/src/polymorphic_life.ml
+++ b/polymorphic-life/001/src/polymorphic_life.ml
@@ -2,33 +2,69 @@ open Core.Std
 
 
 module type MATRIX = sig
+  module Point : sig
+    type t = {r : int; k : int}
+  end
+
   type 'a t
 
-  val create : rs:int -> ks:int -> data:'a -> 'a t
+  val create : rs:int -> ks:int -> 'a -> 'a t
 
-  val get : 'a t -> r:int -> k:int -> 'a
+  val get_neighbors : 'a t -> Point.t -> 'a list
 
   val map : 'a t -> f:('a -> 'b) -> 'b t
 
-  val mapi : 'a t -> f:(r:int -> k:int -> data:'a -> 'b) -> 'b t
+  val mapi : 'a t -> f:(Point.t -> 'a -> 'b) -> 'b t
 
-  val iter : 'a t -> f:(r:int -> k:int -> data:'a -> unit) -> unit
+  val iter : 'a t -> f:(Point.t -> 'a -> unit) -> unit
 
   val print : 'a t -> to_string:('a -> string) -> unit
 end
 
 module Matrix : MATRIX = struct
+  module Point = struct
+    type t = {r : int; k : int}
+
+    let (+) p p' =
+      { r = p.r + p'.r
+      ; k = p.k + p'.k
+      }
+  end
+
+  module Direction = struct
+    type t = NW | N | NE
+           | W  |     E
+           | SW | S | SE
+
+    let all = [ NW ; N ; NE
+              ; W  ;     E
+              ; SW ; S ; SE
+              ]
+
+    let to_offset =
+      let open Point in
+      function
+      | NW -> {r = -1; k = -1}
+      | N  -> {r = -1; k =  0}
+      | NE -> {r = -1; k =  1}
+      | W  -> {r =  0; k = -1}
+      | E  -> {r =  0; k =  1}
+      | SW -> {r =  1; k = -1}
+      | S  -> {r =  1; k =  0}
+      | SE -> {r =  1; k =  1}
+  end
+
   type 'a t = 'a array array
 
-  let create ~rs ~ks ~data =
-    Array.make_matrix ~dimx:rs ~dimy:ks data
+  let create ~rs ~ks x =
+    Array.make_matrix ~dimx:rs ~dimy:ks x
 
   let iter t ~f =
     Array.iteri t ~f:(
       fun r ks ->
         Array.iteri ks ~f:(
-          fun k data ->
-            f ~r ~k ~data
+          fun k x ->
+            f {Point.r; Point.k} x
         )
     )
 
@@ -46,13 +82,28 @@ module Matrix : MATRIX = struct
     Array.mapi t ~f:(
       fun r ks ->
         Array.mapi ks ~f:(
-          fun k data ->
-            f ~r ~k ~data
+          fun k x ->
+            f {Point.r; Point.k} x
         )
     )
 
-  let get t ~r ~k =
+  let get t {Point.r; Point.k} =
     t.(r).(k)
+
+  let is_within_bounds t {Point.r; Point.k} =
+    match t with
+    | [||] -> assert false
+    | t ->
+      r >= 0 && r < Array.length t &&
+      k >= 0 && k < Array.length t.(0)
+
+  let neighborhood t point =
+    List.map Direction.all ~f:Direction.to_offset
+    |> List.map ~f:(fun offset_point -> Point.(point + offset_point))
+    |> List.filter ~f:(is_within_bounds t)
+
+  let get_neighbors t point =
+    List.map (neighborhood t point) ~f:(get t)
 end
 
 
@@ -102,20 +153,39 @@ module Conway : CELL = struct
 end
 
 
-let main rs ks () =
+type opt = { interval : Time.Span.t
+           ; bar      : string
+           }
+
+
+let rec loop opt grid =
+  print_endline opt.bar;
+  Matrix.print grid ~to_string:Conway.to_string;
+  print_endline opt.bar;
+
+  let grid =
+    Matrix.mapi grid ~f:(fun point cell ->
+      let neighbors = Matrix.get_neighbors grid point in
+      Conway.react cell ~states:(List.map neighbors ~f:Conway.state)
+    )
+  in
+  Time.pause opt.interval;
+  loop opt grid
+
+
+let main () =
   Random.self_init ();
-  let grid = Matrix.create ~rs ~ks ~data:() |> Matrix.map ~f:Conway.create in
-  Matrix.print grid ~to_string:Conway.to_string
+  let rs, ks = Or_error.ok_exn Linux_ext.get_terminal_size () in
+  Matrix.create ~rs:(rs - 3) ~ks ()
+  |> Matrix.map ~f:Conway.create
+  |> loop { interval = Time.Span.of_float 0.1
+          ; bar      = String.make ks '-'
+          }
 
 
 let spec =
   let summary = "Polymorphic Cellular Automata" in
-  let spec =
-    let open Command.Spec in
-    empty
-    +> flag "-rows" (optional_with_default 5 int) ~doc:"Height"
-    +> flag "-cols" (optional_with_default 5 int) ~doc:"Width"
-  in
+  let spec = Command.Spec.empty in
   Command.basic ~summary spec main