agents/java/Piece.java

   1 /**
   2  * @file Piece.java
   3  * @purpose Represent Quantum Chess Piece
   4  * @author Sam Moore ([email protected])
   5  */
   6
   7
   8
   9 /**
  10  * @class Piece
  11  * @purpose Represent a quantum chess piece
  12  */
  13 public class Piece
  14 {
  15                 public enum Type {PAWN, BISHOP, KNIGHT, ROOK, QUEEN, KING, UNKNOWN};
  16                 public enum Colour {WHITE, BLACK};
  17
  18                 public Piece(int new_x, int new_y, Colour new_colour, Type type1, Type type2)
  19                 {
  20                         this.x = new_x;
  21                         this.y = new_y;
  22                         this.colour = new_colour;
  23                         this.types = new Piece.Type[2];
  24                         this.types[0] = type1;
  25                         this.types[1] = type2;
  26                         this.type_index = -1;
  27                 }
  28
  29                 public Piece(Piece cpy)
  30                 {
  31                         this.x = cpy.x;
  32                         this.y = cpy.y;
  33                         this.colour = cpy.colour;
  34                         this.types[0] = cpy.types[0];
  35                         this.types[1] = cpy.types[1];
  36                         this.type_index = cpy.type_index;
  37                 }
  38
  39                 public int x;
  40                 public int y; // position of the piece
  41                 public Piece.Colour colour; // colour of the piece
  42                 public int type_index; // indicates state the piece is in; 0, 1, or -1 (unknown)
  43                 public Piece.Type[] types; // states of the piece
  44                 public Piece.Type current_type; // current state of the piece
  45
  46                 public static Piece.Type str2type(String str) throws Exception
  47                 {
  48                         if (str.compareTo("king") == 0)
  49                                 return Piece.Type.KING;
  50                         else if (str.compareTo("queen") == 0)
  51                                 return Piece.Type.QUEEN;
  52                         else if (str.compareTo("rook") == 0)
  53                                 return Piece.Type.ROOK;
  54                         else if (str.compareTo("bishop") == 0)
  55                                 return Piece.Type.BISHOP;
  56                         else if (str.compareTo("knight") == 0)
  57                                 return Piece.Type.KNIGHT;
  58                         else if (str.compareTo("pawn") == 0)
  59                                 return Piece.Type.PAWN;
  60                         else if (str.compareTo("unknown") == 0)
  61                                 return Piece.Type.UNKNOWN;
  62
  63                         throw new Exception("Piece.str2type - string " + str + " isn't a valid type");
  64
  65                 }
  66                 public static Piece.Colour str2colour(String str) throws Exception
  67                 {
  68                         if (str.compareTo("white") == 0)
  69                                 return Piece.Colour.WHITE;
  70                         else if (str.compareTo("black") == 0)
  71                                 return Piece.Colour.BLACK;
  72
  73
  74                         throw new Exception("Piece.str2colour - string " + str + " isn't a valid colour");
  75                 }
  76 }
  77