X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2FDEVEL%2Flablgtk%2Flablgtk_20000829-0.1.0%2Fexamples%2Ffifteen.ml;fp=helm%2FDEVEL%2Flablgtk%2Flablgtk_20000829-0.1.0%2Fexamples%2Ffifteen.ml;h=efdf51fc214a516ba71eb35863cb76a1b9d8c2fb;hb=2ee84a2a641938988703e329aef9fc3c5eb5aacf;hp=0000000000000000000000000000000000000000;hpb=34d83812af9b7064cc8f735c2a78169881140010;p=helm.git

diff --git a/helm/DEVEL/lablgtk/lablgtk_20000829-0.1.0/examples/fifteen.ml b/helm/DEVEL/lablgtk/lablgtk_20000829-0.1.0/examples/fifteen.ml
new file mode 100644
index 000000000..efdf51fc2
--- /dev/null
+++ b/helm/DEVEL/lablgtk/lablgtk_20000829-0.1.0/examples/fifteen.ml
@@ -0,0 +1,97 @@
+(* $Id$ *)
+
+open Gaux
+open Gtk
+open GObj
+open GMain
+
+class position ~init_x ~init_y ~min_x ~min_y ~max_x ~max_y = object
+  val mutable x = init_x
+  val mutable y = init_y
+  method current = (x, y)
+  method up ()    = if y > min_y then y <- y-1 else (); (x, y)
+  method down ()  = if y < max_y then y <- y+1 else (); (x, y)
+  method left ()  = if x > min_x then x <- x-1 else (); (x, y)
+  method right () = if x < max_x then x <- x+1 else (); (x, y)
+end
+
+let game_init () = (* generate initial puzzle state *)
+  let rec game_aux acc rest n_invert =
+    let len = List.length rest in
+    if len=0 then
+      if n_invert mod 2 = 0 then
+	acc (* to be solvable, n_invert must be even *)
+      else
+	(List.hd (List.tl acc))::(List.hd acc)::(List.tl (List.tl acc))
+    else begin
+      let rec extract n xs =
+      	if (n=0) then (List.hd xs, List.tl xs)
+      	else
+	  let (ans, ys) = extract (n-1) (List.tl xs) in
+          (ans, List.hd xs :: ys) in
+      let ran = Random.int len in
+      let (elm, rest1) = extract ran rest in
+      let rec count p xs = match xs with
+	[] -> 0
+      |	y :: ys -> let acc = count p ys in
+	         if p y then 1+acc else acc
+      in
+      let new_n_invert = count (fun x -> elm > x) acc in
+      game_aux (elm :: acc) rest1 (n_invert+new_n_invert)
+    end in
+  let rec from n = if n=0 then [] else n :: from (n-1) in
+  game_aux [] (from 15) 0
+      
+let _ = Random.init (int_of_float (Sys.time () *. 1000.))
+let window = GWindow.window ()
+let _ = window#connect#destroy ~callback:GMain.Main.quit
+
+let tbl = GPack.table ~rows:4 ~columns:4 ~homogeneous:true ~packing:window#add ()
+let dummy = GMisc.label ~text:"" ~packing:(tbl#attach ~left:3 ~top:3) ()
+let arr = Array.create_matrix ~dimx:4 ~dimy:4 dummy
+let init = game_init ()
+let _ =
+  for i = 0 to 15 do
+    let j = i mod 4  in
+    let k = i/4 in
+    let frame =
+      GBin.frame ~shadow_type:`OUT ~width:32 ~height:32
+	~packing:(tbl#attach ~left:j ~top:k) () in
+    if i < 15 then
+      arr.(j).(k) <-
+	GMisc.label ~text:(string_of_int (List.nth init i))
+	  ~packing:frame#add ()
+  done
+let pos = new position ~init_x:3 ~init_y:3 ~min_x:0 ~min_y:0 ~max_x:3 ~max_y:3
+    
+open GdkKeysyms
+
+let _ =
+  window#event#connect#key_press ~callback:
+    begin fun ev ->
+      let (x0, y0) = pos#current in
+      let wid0 = arr.(x0).(y0) in
+      let key = GdkEvent.Key.keyval ev in
+      if key = _q || key = _Escape then (Main.quit (); exit 0) else
+      let (x1, y1) =
+	if key = _h || key = _Left then 
+          pos#right ()
+	else if key = _j || key = _Down then
+	  pos#up ()
+	else if key = _k || key = _Up then
+	  pos#down ()
+	else if key = _l || key = _Right then
+	  pos#left ()
+	else (x0, y0)
+      in
+      let wid1 = arr.(x1).(y1) in
+      wid0#set_text (wid1#text);
+      wid1#set_text "";
+      true
+    end
+	      
+let main () = 
+  window#show ();
+  Main.main ()
+
+let _ = main ()