PC Plus SuperCD (UK) 1998 August/PC Plus SuperCD 50b Issue 142 (CD142b) (August 1998).iso/handson/Java/SCAdventure/Adventure.java

Java Source | 1998-04-27 | 5.8 KB | 150 lines

import java.lang.*;
import java.io.*;
import java.util.*;
// This is the 'main' Adventure unit - the object that contains the map of Rooms
// and their contents

public class Adventure extends java.lang.Object
                       implements java.io.Serializable,
                       AdventureConstants
                       {

    private Vector map = new Vector(); // the map - a Vector of Rooms
    private AdvUtils Utils = new AdvUtils(); // My handy toolkit
    private Person player;             // the player - which provides our 'first person perspective'

    /******** THE MAP *******
    For reference, here is a simple 'picture' of the map
    showing how the rooms are connected:

    room0 -- room1
      |
    room2 -- room3
      |        |
    room4 -- room5

    *************************/

    Adventure() {
        // --- construct a new adventure ---
        // Add Rooms to the map
        //                 Room( name,   description,                                                 N,        S,      W,      E )
        map.addElement(new Room("room0, West of House", "An open field west of a white house",       NOEXIT,   2,      NOEXIT, 1));
        map.addElement(new Room("room1, White House",   "A white house in the Mexican style",        NOEXIT,   NOEXIT, 0,      NOEXIT));
        map.addElement(new Room("room2, Gold room",     "A golden room hung with rich tapestries",   0,        4,      NOEXIT, 3));
        map.addElement(new Room("room3, Troll room",    "A dank, evil-smelling dungeon",             NOEXIT,   5,      2,      NOEXIT));
        map.addElement(new Room("room4, Dark cave",     "It's too dark to see anything!",            2,        NOEXIT, NOEXIT, 5));
        map.addElement(new Room("room5, Orchard",       "A sweetly-scented orchard",                 3,        NOEXIT, 4,      NOEXIT));
        // --- Add things to selected Rooms
        // room0
        ((Room)map.elementAt(0)).addthing(new Thing("Sword", "An Elvish sword of great antiquity"));
        ((Room)map.elementAt(0)).addthing(new Thing("Bubblegum", "A pink, sticky, dried-up blob"));
        ((Room)map.elementAt(0)).addthing(new Thing("Dagger", "A blood-stained dagger"));
        // room3
        ((Room)map.elementAt(3)).addthing(new Thing("Chewing gum", "A grey, sticky, dried-up blob"));
        // room5
        ((Room)map.elementAt(5)).addthing(new Thing("Fluff", "Some pocket fluff"));
        ((Room)map.elementAt(5)).addthing(new Thing("Coin", "A silver sixpenny bit"));
        ((Room)map.elementAt(5)).addthing(new Thing("Pot of noodles", "A vaguely inedible-looking delicacy"));
        // create player and place in Room 0 (i.e. the Room at 0 index of map Vector)
        player = new Person((Room)map.elementAt(0));
    }

    // access methods
    // map
    Vector getmap() {
        return map;
    }

    void setmap(Vector aMap) {
        map = aMap;
    }

    // player
    Person getplayer() {
        return player;
    }

    void setplayer(Person aPlayer) {
        player = aPlayer;
    }

    // move a Person (typically the player) to a Room
    void movePersonTo( Person p, Room aRoom ) {
        p.setroom( aRoom );
    }

    // move a Person 'p' in direction 'dir'
    int moveTo( Person p, int dir ) {
        // return: Constant representing the room number moved to
        // or NOEXIT
        //
        // try to move any Person (typically but not necessarily player)
        // in direction indicated by dir
        Room r = p.getroom();
        int exit;

        switch( dir ) {
            case NORTH : exit = r.getn();
                    break;
            case SOUTH : exit = r.gets();
                    break;
            case EAST : exit = r.gete();
                    break;
            case WEST : exit = r.getw();
                    break;
            default: exit = NOEXIT; // noexit - stay in same room
                    break;
        }
       if (exit > NOEXIT)
            movePersonTo( p,(Room) map.elementAt(exit) );
       return exit;
    }

    String movePlayerTo(int dir) {
        // !!! Now returns a String (a message to be displayed) rather than an integer
        // return: Constant representing the direction moved
        // or NOEXIT (see moveTo())
        //
        if (moveTo(player, dir ) == NOEXIT)
           return "No Exit!";
        else return "";
    }



    String takeOb( String obname ) {
        // If object specified by obname is in current room, Transfer it from
        // Room's object Vector to Player's object Vector
        Vector inventory = player.getthings();
        Vector thingshere = player.getroom().getthings();
        int obindex = Utils.ObNameAtIndex( obname, thingshere );
        if (obname.equals(""))
           return ("I don't know which thing you want to take!");
        else if (obindex == -1)
            return "There is no " + obname + " here!";
        else {
            Utils.TransferOb(thingshere.elementAt(obindex), thingshere, inventory );
            return obname + " taken!";
        }
    }


    String dropOb( String obname ) {
        // If object specified by obname is in inventory, Transfer it from
        // Player's object Vector to Room's object Vector
        Vector inventory = player.getthings();
        Vector thingshere = player.getroom().getthings();
        int obindex = Utils.ObNameAtIndex( obname, inventory );
        if (obname.equals(""))
           return ("I don't know which thing you want to drop!");
        if (obindex == -1)
            return "You haven't got the " + obname + "!";
        else {
            Utils.TransferOb(inventory.elementAt(obindex), inventory, thingshere );
            return obname + " dropped!";
        }
    }

}