寻路问题,所以我这里有一个序言程序,需要输入这样的:在序言
mazepath(X,Y,Maze,Path,Score)
mazepath(1, 1, [[ o, e, j, p, o],
[ o, j, o, o, o],
[ o, j, mt, j, o],
[ o, o, e, o, o],
[ p, o, j, mb, o]], Path, Score).
当几乎所有你需要知道的是J的是墙壁基本相符。我需要做的是从地图右上角开始(1,1)我需要找到p,e,然后找到mb,然后按照这个顺序找到mt。这里是我当前的代码:
mazePath(X,Y,Maze,Path,Score) :-
curVal(X,Y,Maze,V0), %Get the value of the starting point
findMasterball(X,Y,V0,Maze,Path,PathMB), %Find a path to the Masterball.
nth1(1,PathMB,Room0), %Use the path generated by findMasterball to get the starting point for findMewtoo
nth1(1,Room0,Xk),
nth1(1,Room0,Yk),
curVal(Xk,Yk,Maze,V1), %Get the value of the Masterball point
findMewtoo(Xk,Yk,V1,Maze,[[Xk,Yk]],PathM), %Found masterball, starting for Mewtoo
nth1(1,PathM,Room1), %Now find pika
nth1(1,Room1,Xs),
nth1(1,Room1,Ys),
curVal(Xs,Ys,Maze,V2), %Get the value of the
findPika(Xs,Ys,V2,Maze,[[Xs,Ys]]). %Find pika
% findMasterball - recursive predicate that searches for the Masterball
% X,Y - current location
% Val - current value of location
% PathMB - Path traveled so far
% newPath - Path returned
%
%Base Case
findMasterball(_,_,Val,_,PathMB,PathMB) :-
Val == 'mb',
length(PathK,L),
format('~w ~w',['\nPATH TO THE Masterball: ', PathK]),
format('~w ~w',['\nLENGTH OF PATH: ', L]).
%Recursive Case
findMasterball(X,Y,_,Maze,PathMB,newPath) :-
nth1(1,Maze,R), %Get width and height of the maze
length(R,W),
length(Maze,H),
nextMove(X,Y,Xn,Yn,Maze,W,H), %Find the next legal move
curVal(Xn,Yn,Maze,NVal), %Get the value of the next location
\+ memberchk([Xn,Yn],PathMB), %Make sure we have not traveled to this location before
findMewtoo(_,_,Val,_,PathM,PathM) :-
Val == 'mt',
length(PathM,L),
format('~w ~w',['\n\nPATH TO THE SWORD: ', PathM]),
format('~w ~w',['\nLENGTH OF PATH: ', L]).
%Recursive Case
findMewtoo(X,Y,_,Maze,PathM,rPathM) :-
nth1(1,Maze,R), %Get width and height of the maze
length(R,W),
length(Maze,H),
nextMove(X,Y,Xn,Yn,Maze,W,H), %Find the next legal move
curVal(Xn,Yn,Maze,NVal), %Get the value of the next location
\+ memberchk([Xn,Yn],PathM), %Make sure we have not traveled to this location before
findMewtoo(Xn,Yn,NVal,Maze,[[Xn,Yn]|PathM],rPathM). %Recursive call with the next location/value
% findPika - recursive predicate that searches for Pikachoo
% X,Y - current location
% Val - current value of location
% PathPika - Path traveled so far
%
%Base Case
findPika(_,_,Val,_,PikaPath) :-
Val == 'p',
length(PikaPath,L),
format('~w ~w',['\n\nPATH TO THE DUNGEON LORD: ', PikaPath]),
format('~w ~w',['\nLENGTH OF PATH: ', L]).
%Recursive Case
findPika(X,Y,_,Maze,PikaPath) :-
nth1(1,Maze,R), %Get width and height of the maze
length(R,W),
length(Maze,H),
nextMove(X,Y,Xn,Yn,Maze,W,H), %Find the next legal move. Doors are walkable.
curVal(Xn,Yn,Maze,NVal), %Get the value of the next location
\+ memberchk([Xn,Yn],PikaPath), %Make sure we have not traveled to this location before
% X0, Y0 - Current Location
% X, Y - Variables - Next move will be bound to these variables
% Maze
% W, H - Width and height of the maze
nextMove(X0,Y0,X,Y,Maze,W,H) :-
adj(X0,Y0,X,Y),
inBounds(X,Y,W,H).
% Up
adj(X0,Y0,X0,Y) :-
Y is Y0+1.
% Down
adj(X0,Y0,X0,Y) :-
Y is Y0-1.
% Right
adj(X0,Y0,X,Y0) :-
X is X0+1.
% Left
adj(X0,Y0,X,Y0) :-
X is X0-1.
% Is X,Y within the bounds of the maze
inBounds(X,Y,W,H) :-
X >= 1,
Y >= 1,
X =< W,
Y =< H.
% Open space.
roomOpen(X,Y,Maze) :-
nth1(Y,Maze,R),
nth1(X,R,'o').
% This is an egg, pick it up
roomOpen(X,Y,Maze) :-
nth1(Y,Maze,R),
nth1(X,R,'e').
% Here's pikachoo
roomOpen(X,Y,Maze) :-
nth1(Y,Maze,R),
nth1(X,R,'p').
% Is the masterball there? Pick it up & go catch mewtoo!
roomOpen(X,Y,Maze) :-
nth1(Y,Maze,R),
nth1(X,R,'mb').
% Is the mewtoo there? Catch it if you have the masterball!!
roomOpen(X,Y,Maze) :-
nth1(Y,Maze,R),
nth1(X,R,'mt').
%Binds the value of the location of X,Y to Val
curVal(X,Y,Maze,Val) :-
nth1(Y,Maze,R),
nth1(X,R,Val).
现在,当我将其加载到SWI,但只要我打电话mazepath上面一些奇怪的试验正在发生的事情我的代码“规定”罚款。当我追踪它时,它正在看相邻的方格,看看我们是否可以走到一个方格。它从(1,1)开始,所以(1,0)和(0,1)在试图走到那里时会失败。好吧,但是当我的程序看起来(0,1),inBounds失败时,整个程序返回false而不是继续并找到路径。我不明白为什么它只是看着(1,1)周围的空间,而不是转向开放的空间并再次寻找高手球。有任何想法吗?
*“我的代码在我将它加载到SWI时符合要求”*是否?当我加载你的代码时,我得到了两个'运算符优先级冲突错误',一个单例变量和'nextmove/7'的警告没有被定义。 – Fatalize