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Revision 4601, 0.7 KB
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| 1 | |
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| 2 | :- object(heuristic_state_space, |
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| 3 | instantiates(class), |
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| 4 | specializes(state_space)). |
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| 5 | |
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| 6 | |
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| 7 | :- info([ |
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| 8 | version is 1.0, |
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| 9 | author is 'Paulo Moura', |
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| 10 | date is 1998/3/23, |
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| 11 | comment is 'Heuristic state space.']). |
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| 12 | |
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| 13 | |
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| 14 | :- public(next_state/3). |
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| 15 | |
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| 16 | :- mode(next_state(+nonvar, -nonvar, -number), zero_or_more). |
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| 17 | |
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| 18 | :- info(next_state/3, |
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| 19 | [comment is 'Generates a state sucessor.', |
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| 20 | argnames is ['State', 'Next', 'Cost']]). |
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| 21 | |
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| 22 | |
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| 23 | :- public(heuristic/2). |
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| 24 | |
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| 25 | :- mode(heuristic(+nonvar, -number), one). |
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| 26 | |
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| 27 | :- info(heuristic/2, |
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| 28 | [comment is 'Estimates state distance to a goal state.', |
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| 29 | argnames is ['State', 'Estimate']]). |
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| 30 | |
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| 31 | |
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| 32 | next_state(Prev, Next) :- |
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| 33 | ::next_state(Prev, Next, _). |
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| 34 | |
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| 35 | |
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| 36 | :- end_object. |
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