% Graf nieskierowany
neighborroom(X, Y, W) :- gallery(X, Y, W).
neighborroom(X, Y, W) :- gallery(Y, X, W).
% Lista węzłów zakazanych
avoid([prages, n, targowek]).
% Rekurencyjne poszukiwanie drogi
route(End, End, _, 0, VisitedRooms) :-
member(End, VisitedRooms), reverse(VisitedRooms, Path), write(Path), nl.
route(Start, End, StartWeight, TotalWeight, VisitedRooms) :-
neighborroom(Start, Next, Weight),
avoid(DangerousRooms),
\+ member(Next, DangerousRooms),
\+ member(Next, VisitedRooms),
NewWeight is StartWeight + Weight,
route(Next, End, NewWeight, TotalWeight, [Next|VisitedRooms]).
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