PC Plus SuperCD (UK) 2002 September/PCPlus_193_Laplink2000.iso/Prog/c#/wombat/AdvThings.cs

Text File | 2002-05-07 | 5.4 KB | 313 lines

using System;
using System.Collections;

namespace wombat
{
    /// <summary>
    /// AdventureThings contains a hierarchy of the
    /// essential object types of an adventure game
    /// such as Treasure, Room and Player
    /// </summary>
    ///

    // class ThingList
    public class ThingList : System.Collections.CollectionBase
        // A custom Collection. This works like an ArrayList
        // but it is typed to accept only Thing objects
    {

        public  void Add(Thing aThing)
        {
            InnerList.Add(aThing);
        }

        public void AddRange(ThingList aThingList)
        {
            InnerList.AddRange(aThingList);
        }

        public void Remove(int index)
        {
            // Check to see if there is an item at the supplied index.
            if (index > Count - 1 || index < 0)
                // If no item exists, a messagebox is shown and the operation
                // is cancelled.
            {
                System.Windows.Forms.MessageBox.Show("Index not valid!");
            }
            else
            {
                List.RemoveAt(index);
            }
        }

        public Thing Item(int Index)
        {
            // The appropriate item is retrieved from the List object and
            // explicitly cast to the Thing type, then returned to the
            // caller.
            return (Thing) List[Index];
        }

        public string describe()
        {
            string s = "";
            if (this.List.Count == 0)
                s = "Nothing in ThingList.";
            else
            foreach(Thing t in this)
            {
                s = s + t.describe()+"; ";
            }
            return s;
        }

    } // ThingList

    // class RoomList
    public class RoomList : System.Collections.CollectionBase
        // A custom Collection. This works like an ArrayList
        // but it is typed to accept only Room objects
    {

        public void Add(Room aRoom)
        {
            InnerList.Add(aRoom);
        }

        public void AddRange(RoomList aRoomList)
        {
            InnerList.AddRange(aRoomList);
        }

        public Room Item(int Index)
        {
            // The appropriate item is retrieved from the List object and
            // explicitly cast to the Room type, then returned to the
            // caller.
            return (Room) List[Index];
        }


        public string describe()
        {
            string s = "";
            if (this.List.Count == 0)
                s = "Nothing in RoomList.";
            else
            foreach(Room r in this)
            {
                s = s + r.describe()+"\r\n";
            }
            return s;
        }


    } // RoomList

    // class Thing
    public class Thing
    {   // the basic Thing from which all Adventure
        // objects descend.

        private string _name;
        private string _description;

        public Thing(string aName, string aDescription)
        {
            _name = aName;
            _description = aDescription;
        }

        public string Name   //  Name property
        {
            get
            {
                return _name;
            }
            set
            {
                _name = value;
            }
        }

        public string Description   // Description property
        {
            get
            {
                return _description;
            }
            set
            {
                _description = value;
            }
        }

        public virtual string describe() //!! note this is a virtual method
        {
            return Name + " " + Description;
        }


    } // Thing


    // class ThingHolder
    public class ThingHolder : Thing
    {
        private ThingList _things = new ThingList();

        public ThingHolder(string aName, string aDescription, ThingList tl): base(aName, aDescription)
        {
            _things = tl;
        }

        public ThingList Things
        {
            get
            {
                return _things;
            }
            set
            {
                _things = value;
            }
        }

        public void addThing( Thing aThing )
        {
            _things.Add( aThing );
        }

        public void addThings( ThingList aThingList )
        {
            _things.AddRange( aThingList );
        }

        public  /* override */ string describe()  //!! uncomment 'override' to make this an overridden method
        {
            return String.Format("Name: {0}, Description {1} - it contains ->",Name,Description) + _things.describe();

        }

    } // ThingHolder

    // class Room
    public class Room : ThingHolder
    {
        private int _n,_s,_w,_e;
        public Room(string aName, string aDescription,
            int aN, int aS, int aW, int aE, ThingList tl): base(aName, aDescription, tl)
        {
            _n = aN;
            _s = aS;
            _w = aW;
            _e = aE;
        }

        public int N
        {
            get
            {
                return _n;
            }
            set
            {
                _n = value;
            }
        }

        public int S
        {
            get
            {
                return _s;
            }
            set
            {
                _s = value;
            }
        }

        public int W
        {
            get
            {
                return _w;
            }
            set
            {
                _w = value;
            }
        }

        public int E
        {
            get
            {
                return _e;
            }
            set
            {
                _e = value;
            }
        }

        public void setDirs( int aN, int aS, int aW, int aE )
        {
            _n = aN;
            _s = aS;
            _w = aW;
            _e = aE;
        }

        public void getDirs( out int aN, out int aS,
                             out int aW, out int aE )
        {
            aN = _n;
            aS = _s;
            aW = _w;
            aE = _e;
        }

        public string describe()
        {
            return String.Format("Name: {0}, Description {1}. Exits: N:{2} S:{3} W:{4} E:{5}",Name,Description,_n,_s,_w,_e)
                    + "\r\nThings here: " + this.Things.describe();

        }


    } // Room

    // class Actor
    public class Actor : ThingHolder
    {
        private Room _room; // Room where Person is at present

        public Actor(string aName, string aDescription, Room aRoom, ThingList tl):
                                    base(aName, aDescription, tl)
        {
            _room = aRoom;
        }

        public Room CurrentRoom
        {
            get
            {
                return _room;
            }
            set
            {
                _room = value;
            }
        }
        public string describe()
        {
            return String.Format("Name: {0}, Description {1}",Name,Description)+
                "\r\nCurrent in this room: " + this.CurrentRoom.describe();
        }

    }// Actor
}