room.java

简单的一个maze系统

package mazeImplementation;

// -----------------------------------------------
// Programming 2 -- Semester 2, 2007
// Maze Engine implementation
// Peter Tilmanis, 8 August 2007
// -----------------------------------------------
// Room class
// -----------------------------------------------

import java.util.*;

public class Room
{
   private MazeRef location;
   private String name;
   private List<Item> items;
   private List<ExitPoint> exits;

   public Room()
   {
      this(new MazeRef(), "Generic Room");
   }

   public Room(MazeRef location, String name)
   {
      this.location = location;
      this.name = name;
      this.items = new Vector<Item>();
      this.exits = new Vector<ExitPoint>();
   }

   public MazeRef getLocation()
   {
      return location;
   }

   public String getName()
   {
      return name;
   }

   public void addExit(ExitPoint in)
   {
      exits.add(in);
   }  

   public ExitPoint getExit(String name)
   {
      for (int i = 0; i < exits.size(); i++)
      {
         ExitPoint temp = exits.get(i);
         if ( temp.getName().equals(name) )
         {
            return temp;
         }
      }

      return null;
   }

   public boolean removeExit(String exitName)
   {
      for (int i = 0; i < exits.size(); i++)
      {
         ExitPoint temp = exits.get(i);
         if ( temp.getName().equals(exitName) )
         {
            exits.remove(i);
            return true;
         }
      }

      return false;
   }

   public void addItem(Item item)
   {
      items.add(item);
      Collections.<Item>sort(items);
   }  

   public Item getItem(String name)
   {
      for (int i = 0; i < items.size(); i++)
      {
         Item temp = items.get(i);
         if ( temp.getName().equals(name) )
         {
            return temp;
         }
      }

      return null;
   }

   public boolean removeItem(String itemName)
   {
      for (int i = 0; i < items.size(); i++)
      {
         Item temp = items.get(i);
         if ( temp.getName().equals(itemName) )
         {
            items.remove(i);
            return true;
         }
      }

      return false;
   }

   public Item[] getItemList()
   {
      return items.toArray(new Item[0]);
   }

   public ExitPoint[] getExitList()
   {
      return exits.toArray(new ExitPoint[0]);
   }

   public String toString()
   {
      String result = location + ":" + name + ":";

      Item[] items = this.getItemList();
      for (int i = 0; i < items.length; i++)
      {
         result += items[i].getName();

         if (i != items.length-1)
            result += ",";
      }

      result += ":";

      ExitPoint[] exits = this.getExitList();
      for (int i = 0; i < exits.length; i++)
      {
         result += exits[i].getName();

         if (i != exits.length-1)
            result += ",";
      }

      return result;
   }
}