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Java > Open Source Codes > examples > gp > tictactoe > PutStone


1 /*
2  * This file is part of JGAP.
3  *
4  * JGAP offers a dual license model containing the LGPL as well as the MPL.
5  *
6  * For licencing information please see the file license.txt included with JGAP
7  * or have a look at the top of class org.jgap.Chromosome which representatively
8  * includes the JGAP license policy applicable for any file delivered with JGAP.
9  */
10 package examples.gp.tictactoe;
11
12 import org.jgap.gp.*;
13 import org.jgap.*;
14 import org.jgap.gp.impl.*;
15
16 public class PutStone
17     extends CommandGene {
18   /** String containing the CVS revision. Read out via reflection!*/
19   private final static String JavaDoc CVS_REVISION = "$Revision: 1.2 $";
20
21   private Board m_board;
22
23   private int m_color;
24
25   public PutStone(final GPConfiguration a_conf, Board a_board, int a_color)
26       throws InvalidConfigurationException {
27     this(a_conf, a_board, a_color, 0, null);
28   }
29
30   public PutStone(final GPConfiguration a_conf, Board a_board, int a_color,
31                   int a_subReturnType, int[] a_subChildTypes)
32       throws InvalidConfigurationException {
33     super(a_conf, 2, CommandGene.VoidClass, a_subReturnType, a_subChildTypes);
34     m_board = a_board;
35     m_color = a_color;
36   }
37
38   public String JavaDoc toString() {
39     return "put_stone(&1, &2)";
40   }
41
42   public void execute_void(ProgramChromosome c, int n, Object JavaDoc[] args) {
43     check(c);
44     int x = c.execute_int(n, 0, args);
45     int y = c.execute_int(n, 1, args);
46     // Put stone on board.
47 // -------------------
48 boolean gameWon = m_board.putStone(x, y, m_color);
49     // If game won, quit GP-program.
50 // -----------------------------
51 if (gameWon) {
52       throw new GameWonException(m_color, "Game won by color " + m_color);
53     }
54   }
55
56   protected void check(ProgramChromosome a_program) {
57     if (m_board.getLastColor() == m_color) {
58       throw new IllegalStateException JavaDoc("Only one stone of a color per round!");
59     }
60   }
61
62   /**
63    * Determines which type a specific child of this command has.
64    *
65    * @param a_ind ignored here
66    * @param a_chromNum index of child
67    * @return type of the a_chromNum'th child
68    *
69    * @author Klaus Meffert
70    * @since 3.2
71    */
72   public Class JavaDoc getChildType(IGPProgram a_ind, int a_chromNum) {
73 // if (a_chromNum == 0 || a_chromNum == 1) {
74 return CommandGene.IntegerClass;
75 // }
76 }
77 }
78
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