add some printing messages

data.pl

@@ -1,4 +1,4 @@
-task("take over a world",todo).
+task("nic",todo).
-task("sleep",done).
-task("finish this",todo).
 task("test task",todo).
+task("sleep",done).
+task("przejmij wladze nad swiatem",done).

todo.pl

@@ -1,18 +1,30 @@
 :- dynamic task/2.
 :- dynamic requires/2.
+:- dynamic idx/2.
 :- discontiguous load/0.
     
-task("take over a world", todo).
+task_input(X, Y) :- task(X, Y).
-task("sleep", done).
+task_input(X, Y) :- idx(X, Task), task(Task, Y).
-task("finish this", todo).
 
 all_tasks(L):- findall(X, task(X, _), L).
 all_tasks(L, STATE):- findall(X, task(X, STATE), L).
 
-print_task_list([]).
-print_task_list([H|T]) :- task(H,ISDONE), write(ISDONE),write(': '), write(H),nl, print_task_list(T).
 
-list :- all_tasks(L), print_task_list(L).
+print_task_list([],_).
+print_task_list([H|T],N) :- 
+    M is N+1,
+    retractall(idx(N, _)),
+    asserta(idx(N, H)),
+    write(N),
+    write(". "),
+    task(H,ISDONE), 
+    write(ISDONE),
+    write(': '), 
+    write(H),nl, 
+    print_task_list(T, M).
+
+list_all :- all_tasks(L), print_task_list(L,1).
+list_all :- all_tasks(L), print_task_list(L,1).
 
 print_list([]).
 print_list([H|T]) :- write(H),nl, print_list(T).
@@ -50,8 +62,12 @@ load_task(Stream) :-
 
 load_task(Stream) :- 
     read(Stream, Task),
+    write("reading: "),
+    write(Task),
+    nl,
     asserta(Task),
     load_task(Stream).
+
 load :-
     open('data.pl', read, Stream),
     load_task(Stream).