From 19e66dbd8fd3bd66f286bbbcd7ce842d727a4422 Mon Sep 17 00:00:00 2001
From: Jed Barber <jjbarber@y7mail.com>
Date: Fri, 4 Apr 2014 01:48:43 +1100
Subject: Makefile added, files reorganised

---
 src/agent.prolog | 278 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 278 insertions(+)
 create mode 100644 src/agent.prolog

(limited to 'src/agent.prolog')

diff --git a/src/agent.prolog b/src/agent.prolog
new file mode 100644
index 0000000..4085bf9
--- /dev/null
+++ b/src/agent.prolog
@@ -0,0 +1,278 @@
+
+:- module(agent, [init, look/0, move/1, take/1, shoot/1, hazardAt/1, somethingAt/1]).
+
+
+:- consult('misc.prolog').
+:- consult('parser.prolog').
+:- consult('map.prolog').
+
+
+
+
+% initialisation
+
+init :-
+    initPos,
+    initPits,
+    initWumpus,
+    initGold,
+    initBats,
+    roomList(Rooms),
+    filter(Rooms, hazardAt, Walkable),
+    isConnected(Walkable) *-> !; init.
+
+
+initPos :-
+    retractall(moves(_)),
+    asserta(moves(0)),
+    retractall(here(_)),
+    roomList(Rooms),
+    filter(Rooms, somethingAt, Emptyrooms),
+    random_member(X,Emptyrooms),
+    asserta(here(X)).
+
+
+initPits :-
+    retractall(pitAt(_)),
+    insert(5,pitAt).
+
+
+initWumpus :-
+    retractall(wumpusAt(_)),
+    roomList(Rooms),
+    filter(Rooms, somethingAt, Emptyrooms),
+    random_member(X,Emptyrooms),
+    asserta(wumpusAt(X)).
+
+
+initGold :-
+    retractall(goldAt(_)),
+    retractall(haveGold(_)),
+    insert(3,goldAt),
+    asserta(haveGold(0)).
+
+
+initBats :-
+    retractall(batsAt(_)),
+    insert(2,batsAt).
+
+
+insert(N,Thing) :-
+    N > 0,
+    Nx is N - 1,
+    insert(Nx,Thing),
+    roomList(Rooms),
+    filter(Rooms, somethingAt, Emptyrooms),
+    random_member(X,Emptyrooms),
+    P =.. [Thing,X],
+    asserta(P).
+insert(0,_) :- true.
+
+
+
+
+% command functions
+
+look :-
+    here(Location),
+    writeSenses(Location),
+    writeExits(Location).
+
+
+move(Direction) :-
+    here(Location),
+    connects(Location, New, Direction),
+    retract(here(Location)),
+    asserta(here(New)),
+    join(['You move to the ',Direction,'.\n\n'],W),
+    write(W), 
+    checkHazards,
+    incrementMoves,
+    look, !.
+
+
+move(_) :-
+    write('Unknown direction.\n\n').
+
+
+take(gold) :-
+    here(Location),
+    goldAt(Location),
+    retract(goldAt(Location)),
+    haveGold(G),
+    Gx is G + 1,
+    retract(haveGold(G)),
+    asserta(haveGold(Gx)),
+    write('You find some gold. Lucky you.\n\n'),
+    incrementMoves, !.
+
+
+take(_) :-
+    write('You cannot take that.\n\n').
+
+
+shoot(Direction) :-
+    here(Location),
+    connects(Location, Target, Direction),
+    wumpusAt(Target),
+    write('You hear an unearthly scream.\n\n'),
+    retract(wumpusAt(Target)),
+    incrementMoves,
+    win.
+
+
+shoot(Direction) :-
+    here(Location),
+    connects(Location, Target, Direction),
+    not(wumpusAt(Target)),
+    write('Thunk. Missed.\n\n'),
+    incrementMoves,
+    moveWumpus.
+
+
+shoot(_) :-
+    write('Unknown target.\n\n').
+
+
+
+
+% letting the player know what's going on
+
+writeSenses(Location) :-
+    glitter(Location),
+    breeze(Location),
+    bats(Location),
+    stench(Location).
+
+
+glitter(Location) :-
+    current_predicate(goldAt/1),
+    goldAt(Location),
+    write('You see a glitter along the sandy floor of the cave.\n').
+glitter(_) :- true.
+
+
+breeze(Location) :-
+    current_predicate(pitAt/1),
+    connects(Location, ConnectedRoom, _),
+    pitAt(ConnectedRoom),
+    write('A cold breeze blows through the room, making you shiver slightly.\n').
+breeze(_) :- true.
+
+
+bats(Location) :-
+    current_predicate(batsAt/1),
+    connects(Location, ConnectedRoom, _),
+    batsAt(ConnectedRoom),
+    write('All available surfaces are covered in guano. How unsanitary.\n').
+bats(_) :- true.
+
+
+stench(Location) :-
+    current_predicate(wumpusAt/1),
+    connects(Location, ConnectedRoom, _),
+    wumpusAt(ConnectedRoom),
+    write('An overpowering stench fills your nose.\n').
+stench(_) :- true.
+
+
+writeExits(Location) :-
+    findall(X, connects(Location,_,X), Exits),
+    intercalate(Exits, ', ', O),
+    join(['There are exits to the ',O,'.\n'],W),
+    write(W).
+
+
+
+
+% modifying things and checking the ramifications
+
+moveWumpus :-
+    wumpusAt(Old),
+    findall(X, connects(Old,X,_), PossibleNews),
+    random_member(New, PossibleNews),
+    retract(wumpusAt(Old)),
+    asserta(wumpusAt(New)),
+    checkWumpus.
+
+
+checkHazards :-
+    checkWumpus,
+    checkBats,
+    checkPit.
+
+
+checkWumpus :-
+    current_predicate(wumpusAt/1),
+    here(Location),
+    wumpusAt(Location),
+    lose(eaten).
+checkWumpus :- true.
+
+
+checkBats :-
+    current_predicate(batsAt/1),
+    here(Location),
+    batsAt(Location),
+    write('A giant bat swoops down, picks you up, and deposits you elsewhere in the cave.\n\n'),
+    roomList(Rooms),
+    random_member(NewLocation, Rooms),
+    retract(here(Location)),
+    asserta(here(NewLocation)),
+    checkHazards.
+checkBats :- true.
+
+
+checkPit :-
+    current_predicate(pitAt/1),
+    here(Location),
+    pitAt(Location),
+    lose(pit).
+checkPit :- true.
+
+
+
+
+% winning, losing, and otherwise
+
+incrementMoves :-
+    moves(N),
+    retractall(moves(_)),
+    Nx is N + 1,
+    asserta(moves(Nx)).
+
+
+win :-
+    write('*** YOU WIN ***\n'),
+    moves(M),
+    haveGold(G),
+    join(['\nWin accomplished in ',M,' moves with ',G,' gold found\n'],W),
+    write(W),
+    halt(0).
+
+
+lose(eaten) :-
+    write('You have been eaten by the wumpus.\n'),
+    write('*** GAME OVER ***\n'),
+    halt(0).
+
+
+lose(pit) :-
+    write('You have fallen into a bottomless pit.\n'),
+    write('*** GAME OVER ***\n'),
+    halt(0).
+
+
+
+
+% miscellaneous clauses
+
+somethingAt(X) :- current_predicate(here/1), here(X).
+somethingAt(X) :- current_predicate(goldAt/1), goldAt(X).
+somethingAt(X) :- hazardAt(X).
+
+
+hazardAt(X) :- current_predicate(wumpusAt/1), wumpusAt(X).
+hazardAt(X) :- current_predicate(pitAt/1), pitAt(X).
+hazardAt(X) :- current_predicate(batsAt/1), batsAt(X).
+
-- 
cgit