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/*
* Copyright (c) 2012 Benjamin Franzke <benjaminfranzke@googlemail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
%:-initialization(start).
pay(c,d,1).
pay(d,d,2).
pay(c,c,3).
pay(d,c,4).
pay2(A, B, PayA, PayB) :- pay(A, B, PayA), pay(B, A, PayB).
sum([], 0).
sum([H|T], S) :- sum(T, TMP), S is TMP + H.
do(e, _, _, _, _) :- !.
do(Choice, Module, ModuleState, Hist, PayedA, PayedB) :-
call(Module, Hist, ModuleDecision, ModuleState, NewModuleState),
pay2(Choice, ModuleDecision, PayA, PayB),
sum([PayA|PayedA], SumA), sum([PayB|PayedB], SumB),
format('A [~w]: ~w\tB [~w]: ~w\tA Total: ~w\tB Total: ~w\n',
[Choice, PayA, ModuleDecision, PayB, SumA, SumB]),
loop(Module, NewModuleState, [Choice|Hist], [PayA|PayedA], [PayB|PayedB]).
loop(Module, ModuleState, Hist, PayedA, PayedB) :-
write('Type c,d or e to end: '), read(Choice),
do(Choice, Module, ModuleState, Hist, PayedA, PayedB).
start(Module) :- atom_concat('rules/', Module, Path), consult(Path),
loop(Module, [], [], [], []).
start :- start(tit4tat),halt.
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