agents/java/Agent.java

   1 /**
   2  * @class Agent
   3  * @purpose Class that represents an agent which will play qchess
   4  */
   5
   6 import java.util.Random;
   7 import java.util.Vector;
   8
   9 class Agent
  10 {
  11         public Agent(String colour) throws Exception
  12         {
  13                 this.colour = Piece.str2colour(colour);
  14
  15                 this.board = new Board();
  16                 this.selected = null;
  17                 this.rand = new Random();
  18         }
  19
  20         public static void main(String [] args)
  21         {
  22                 String colour = Reader.readLine();
  23
  24                 try
  25                 {
  26                         Agent agent = new Agent(colour);
  27                         agent.Run();
  28                 }
  29                 catch (Exception e)
  30                 {
  31                         //System.err.println("EXCEPTION: agent.Run - "+e);
  32                         e.printStackTrace();
  33                 }
  34         }
  35
  36         public void Run() throws Exception
  37         {
  38                 while (true)
  39                 {
  40                         Vector<String> v = Reader.readTokens();
  41
  42                         String cmd = v.get(0);
  43
  44                         if (cmd.compareTo("QUIT") == 0)
  45                                 break;
  46                         else if (cmd.compareTo("SELECTION?") == 0)
  47                         {
  48                                 Square s = select();
  49                                 System.out.println(Integer.toString(s.x) + " " + Integer.toString(s.y));
  50                         }
  51                         else if (cmd.compareTo("MOVE?") == 0)
  52                         {
  53                                 Square s = move();
  54                                 System.out.println(Integer.toString(s.x) + " " + Integer.toString(s.y));
  55                         }
  56                         else
  57                         {
  58                                 int x = Integer.parseInt(v.get(0));
  59                                 int y = Integer.parseInt(v.get(1));
  60                                 if (v.get(2).compareTo("->") == 0)
  61                                 {
  62                                         int x2 = Integer.parseInt(v.get(3));
  63                                         int y2 = Integer.parseInt(v.get(4));
  64                                         board.Update_move(x, y, x2, y2);
  65                                 }
  66                                 else
  67                                 {
  68                                         int index = Integer.parseInt(v.get(2));
  69                                         String type = v.get(3);
  70                                         board.Update_select(x, y, index, type);
  71                                 }
  72                         }
  73                 }
  74         }
  75
  76         public Square select() throws Exception
  77         {
  78                 Vector<Piece> p = board.pieces(colour);
  79                 int choice = rand.nextInt(p.size());
  80                 Square s = board.Get_square(p.get(choice).x, p.get(choice).y);
  81                 if (s.piece == null)
  82                         throw new Exception("ARGH");
  83                 selected = s.piece;
  84                 return s;
  85         }
  86
  87         public Square move()
  88         {
  89                 Vector<Square> v = new Vector<Square>();
  90                 board.Get_moves(selected, v);
  91                 return v.get(rand.nextInt(v.size()));
  92         }
  93
  94         private final Piece.Colour colour; // colour of the agent; do not change it
  95         private Board board;
  96         private Piece selected;
  97         private Random rand;
  98
  99 };