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final_random.pl
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:- dynamic([passing/1, rounds/1, bestpath/1, beststeps/1]).
:- assert(passing(1)).
:- assert(rounds(100)).
:- assert(beststeps(401)).
agent(0, 0).
listOfTouchdowns([[5,5]]).
world(5,5).
listOfOrcs([[0,1],[1,0],[1,2],[2,1],[2,3],[3,2]]).
listOfHumans([[2,2],[4,4]]).
newRound:-
retractall(passing(_)), assert(passing(1)),
rounds(X),
retract(rounds(X)),
Z is X - 1,
assert(rounds(Z)),
main.
checkRounds:-
rounds(X), X > 0.
isOrc(Coord):-
listOfOrcs(L), member(Coord, L).
isHuman(Coord):-
listOfHumans(L), member(Coord, L).
isTouchdown(Coord):-
listOfTouchdowns(L), member(Coord, L).
outX(X):-
world(T, T),
(X < 0; X > T).
outY(Y):-
world(T, T),
(Y < 0; Y > T).
isOut(X, Y):-
outX(X); outY(Y).
up(X, Y, X, Z) :-
Z is Y + 1.
right(X, Y, Z, Y) :-
Z is X + 1.
down(X, Y, X, Z) :-
Z is Y - 1.
left(X, Y, Z, Y) :-
Z is X - 1.
passup(X, Y, AnsX, AnsY):-
isOrc([X, Y]) -> (writeln('Accidentally passed to orc:('), newRound);
isHuman([X, Y]) -> (AnsX is X, AnsY is Y);
isOut(X, Y) -> (writeln('Accidentally passed to wall:('), newRound);
(YT is Y + 1, passup(X, YT, AnsX, AnsY)).
passdown(X, Y, AnsX, AnsY):-
isOrc([X, Y]) -> (writeln('Accidentally passed to orc:('), newRound);
isHuman([X, Y]) -> (AnsX is X, AnsY is Y);
isOut(X, Y) -> (writeln('Accidentally passed to wall:('), newRound);
(YT is Y - 1, passdown(X, YT, AnsX, AnsY)).
passright(X, Y, AnsX, AnsY):-
isOrc([X, Y]) -> (writeln('Accidentally passed to orc:('), newRound);
isHuman([X, Y]) -> (AnsX is X, AnsY is Y);
isOut(X, Y) -> (writeln('Accidentally passed to wall:('), newRound);
(XT is X + 1, passright(XT, Y, AnsX, AnsY)).
passleft(X, Y, AnsX, AnsY):-
isOrc([X, Y]) -> (writeln('Accidentally passed to orc:('), newRound);
isHuman([X, Y]) -> (AnsX is X, AnsY is Y);
isOut(X, Y) -> (writeln('Accidentally passed to wall:('), newRound);
(XT is X - 1, passleft(XT, Y, AnsX, AnsY)).
passur(X, Y, AnsX, AnsY):-
isOrc([X, Y]) -> (writeln('Accidentally passed to orc:('), newRound);
isHuman([X, Y]) -> (AnsX is X, AnsY is Y);
isOut(X, Y) -> (writeln('Accidentally passed to wall:('), newRound);
(XT is X + 1, YT is Y + 1, passur(XT, YT, AnsX, AnsY)).
passul(X, Y, AnsX, AnsY):-
isOrc([X, Y]) -> (writeln('Accidentally passed to orc:('), newRound);
isHuman([X, Y]) -> (AnsX is X, AnsY is Y);
isOut(X, Y) -> (writeln('Accidentally passed to wall:('), newRound);
(XT is X - 1, YT is Y + 1, passul(XT, YT, AnsX, AnsY)).
passdr(X, Y, AnsX, AnsY):-
isOrc([X, Y]) -> (writeln('Accidentally passed to orc:('), newRound);
isHuman([X, Y]) -> (AnsX is X, AnsY is Y);
isOut(X, Y) -> (writeln('Accidentally passed to wall:('), newRound);
(XT is X + 1, YT is Y - 1, passdr(XT, YT, AnsX, AnsY)).
passdl(X, Y, AnsX, AnsY):-
isOrc([X, Y]) -> (writeln('Accidentally passed to orc:('), newRound);
isHuman([X, Y]) -> (AnsX is X, AnsY is Y);
isOut(X, Y) -> (writeln('Accidentally passed to wall:('), newRound);
(XT is X - 1, YT is Y - 1, passdl(XT, YT, AnsX, AnsY)).
direct(X, Y, NewX, NewY, A):-
Direction is random(4),(
Direction == 0 -> (up(X, Y, NewX, NewY), A = 'M');
Direction == 1 -> (right(X, Y, NewX, NewY), A = 'M');
Direction == 2 -> (left(X, Y, NewX, NewY), A = 'M');
Direction == 3 -> (down(X, Y, NewX, NewY), A = 'M')).
pass(X, Y, NewX, NewY, A):-
Direction is random(8),(
Direction == 0 -> (YT is Y + 1,passup(X, YT, NewX, NewY));
Direction == 1 -> (YT is Y - 1,passdown(X, YT, NewX, NewY));
Direction == 2 -> (XT is X + 1,passright(XT, Y, NewX, NewY));
Direction == 3 -> (XT is X - 1,passleft(XT, Y, NewX, NewY));
Direction == 4 -> (XT is X + 1, YT is Y + 1, passur(XT, YT, NewX, NewY));
Direction == 5 -> (XT is X - 1, YT is Y + 1, passul(XT, YT, NewX, NewY));
Direction == 6 -> (XT is X + 1, YT is Y - 1, passdr(XT, YT, NewX, NewY));
Direction == 7 -> (XT is X - 1, YT is Y - 1, passdl(XT, YT, NewX, NewY))
), A = 'P', retractall(passing(_)), assert(passing(0)).
trap(X, Y, Vis):-
up(X, Y, XU, YU), member([XU, YU], Vis),
down(X, Y, XD, YD), member([XD, YD], Vis),
right(X, Y, XR, YR), member([XR, YR], Vis),
left(X, Y, XL, YL), member([XL, YL], Vis).
action(X, Y, XF, YF, AF, Vis):-
(passing(1) -> ( Direction is random(2),
(Direction == 0 -> direct(X, Y, NewX, NewY, AF);
Direction == 1 -> pass(X, Y, NewX, NewY,AF)));
direct(X, Y, NewX, NewY, AF)),
(member([NewX, NewY], Vis) ->(action(X, Y, X1, Y1, AK, Vis),XF is X1, YF is Y1, AF = AK); (XF is NewX, YF is NewY)).
addToPath(X, Y, Vis):-
isOrc([X, Y]) -> (write('Bumped into orc: '), reverse(Vis, Path), writeln(Path), newRound);
isTouchdown([X,Y]) ->(write('Reached the touchdown in '),calculateLenOfPath(Vis, Len), write(Len),
write(' steps: '),reverse(Vis, Path), writeln(Path),
((beststeps(S),(Len < S)) -> (retract(beststeps(S)), assert(beststeps(Len)), retractall(bestpath(_)), assert(bestpath(Path))); true),
newRound);
trap(X, Y, Vis) -> (write('Accidentally in stalemate: '), reverse(Vis, Path), write(Path),nl,newRound);
isOut(X, Y) -> (write('Bumped into wall: '), reverse(Vis, Path), write(Path),nl,newRound);
(action(X, Y, NewX, NewY, A, Vis),(( A == 'M', isHuman([NewX, NewY]))-> NewA = 'H'; NewA = A),
addToPath(NewX, NewY, [[NewX, NewY], NewA|Vis])).
%%count function was taken from the following site
%%https://www.tek-tips.com/viewthread.cfm?qid=1604418
count(_, [], 0).
count(X, [X | T], N) :-
!, count(X, T, N1),
N is N1 + 1.
count(X, [_ | T], N) :-
count(X, T, N).
calculateLenOfPath(Path, Len):-
count('M', Path, NumM),
count('P', Path, NumP),
Len is (NumM + NumP).
main:-
(checkRounds -> (rounds(X),
nl, write('Start new round '),
Z is 101 - X, writeln(Z),
agent(StartX, StartY),
addToPath(StartX, StartY, [[StartX, StartY]])));
(nl, nl, beststeps(S), (S<401->(write('Best Solution is in '), write(S),
write(' steps: '), bestpath(Path), writeln(Path));
writeln('Best Solution was not found'))), statistics(walltime, [_ | [Runtime]]),write('Time: '), write(Runtime),
writeln(' ms.').
start:-
(write('Start the game'), nl,
world(T, T),
write('World is '), write(T), write('x'), write(T), nl,
statistics(walltime, [_ | [_]]), main).