7f6c6af7d5
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@1218 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
37 lines
680 B
Plaintext
37 lines
680 B
Plaintext
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:- object(heuristic_state_space,
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instantiates(class),
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specializes(state_space)).
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:- info([
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version is 1.0,
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author is 'Paulo Moura',
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date is 1998/3/23,
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comment is 'Heuristic state space.']).
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:- public(next_state/3).
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:- mode(next_state(+nonvar, -nonvar, -number), zero_or_more).
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:- info(next_state/3,
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[comment is 'Generates a state sucessor.',
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argnames is ['State', 'Next', 'Cost']]).
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:- public(heuristic/2).
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:- mode(heuristic(+nonvar, -number), one).
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:- info(heuristic/2,
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[comment is 'Estimates state distance to a goal state.',
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argnames is ['State', 'Estimate']]).
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next_state(Prev, Next) :-
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::next_state(Prev, Next, _).
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:- end_object.
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