infocom/compilers/inform5/examples/carousel.inf

!--------------------------------------------------------------------------
! The Carousel Room from Zork II: an example
!
! Graham Nelson, 3/95, after Lebling & Blank
!--------------------------------------------------------------------------

Constant Story "CAROUSEL";
Constant Headline "^An Interactive Snippet from Zork II^by Dave Lebling \
    and Marc Blank (1981)^";

Constant MAX_SCORE 4;
Include "parser";
Include "verblib";
Include "grammar";

[ Initialise;
    location = Arched_Hall;
    print "^^^^^Are you feeling dizzy? It must be the...^^";
];

Object  Arched_Hall "Arched Hall"
 has    light
 with   description "This is an arched hall of fine marble. The hall is \
            blocked to the north by an unfordable stream, where the \
            marble is cracked and broken. Perhaps a flood or collapse of \
            the cave was responsible. To the south the hall opens into a \
            large room. There is rather annoying whirring sound coming \
            from that room.",
        s_to Carousel_Room;

Object  Carousel_Room "Carousel Room"
 has    light general
 with   description [;
            print "You are in a large circular room whose high ceiling is \
                lost in gloom.  Eight identical passages leave the \
                room.^";
            if (self has general)
                "A loud whirring sound comes from all around, and you \
                feel sort of disoriented in here.";
            "The whirring sound is very quiet, and you no longer feel \
            dizzy.";
        ],
        n_to Arched_Hall,   
        ne_to side_room_ne,  
        nw_to side_room_nw,
        se_to side_room_se, 
        sw_to side_room_sw,  
        s_to side_room_s,
        e_to side_room_e,   
        w_to side_room_w,
        before [ i;  
         Go:
            print "You're not sure which direction is which.  This room \
                is very disorienting.^";
            switch (random(7)) {
             1: i = Arched_Hall;
             2: i = side_room_ne;
             3: i = side_room_nw;
             4: i = side_room_se;
             5: i = side_room_sw;
             6: i = side_room_s;
             7: i = side_room_e;
            }
            PlayerTo(i);
            rtrue;
        ];

Class   side_room
 with   description "This is a little side-chamber, with no other exit.",
 has    light;

Object  side_room_ne "NE of Carousel"
 class  side_room
 with   sw_to Carousel_Room;

Object  side_room_nw "NW of Carousel"
 class  side_room
 with   se_to Carousel_Room;

Object  side_room_e "E of Carousel"
 class  side_room
 with   w_to Carousel_Room;

Nearby  table "oak table"
 has    static supporter
 with   name "oak" "table" "engraved" "engravings",
        initial "An engraved oak table rests beside one wall.",
        description "~Place Treasures Here~.",
        after [;
         Receive:
            if (noun == pile) { deadflag = 2; "Chime!"; }
        ];

Object  side_room_w "Room 8"
 class  side_room
 with   e_to Carousel_Room;

Nearby  pile "pile of jewels"
 has    scored
 with   name "pile" "of" "jewels" "gems";

Object  side_room_se "SE of Carousel"
 class  side_room
 with   nw_to Carousel_Room;

Object  side_room_sw "SW of Carousel"
 class  side_room
 with   ne_to Carousel_Room;

Object  side_room_s "S of Carousel"
 class  side_room
 with   n_to Carousel_Room;

Nearby  switch "large switch"
 has    switchable static on
 with   name "large" "switch" "lever",
        when_off "A large switch is down on the wall.",
        when_on  "A large switch is up on the wall.",
        before [;
         Pull: <<SwitchOff self>>;
         Push: <<SwitchOn self>>;
        ],
        after [;
         SwitchOn:  "Nothing obvious happens.";
         SwitchOff: 
            give Carousel_Room ~general;

            !  Note that, since Inform is an untyped language, it is
            ! entirely legal to over-write the "before" of Carousel_Room
            ! with a number... in this case -1, which means "no before
            ! routine at all" and is the value of "before" for any object
            ! which doesn't provide one.  This conveniently deletes the
            ! "disoriented" rule from the game.

            Carousel_Room.before = -1;
            "There is a shower of sparks, and the whirring sound dies \
            down.";
        ];

End;