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Added positional board evaluation

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This commit is contained in:
Kai S. K. Engelbart 2019-07-11 19:57:54 +02:00
parent 9c19b13785
commit c7bac23420
Signed by: kske
GPG Key ID: 8BEB13EC5DF7EF13
2 changed files with 60 additions and 19 deletions
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53
src/dev/kske/chess/board/Board.java
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@ -21,6 +21,43 @@ public class Board implements Cloneable {
private Map<Color, Position> kingPos;
private Log log;
private static final Map<Type, int[][]> positionScores;
static {
positionScores = new HashMap<>();
positionScores.put(Type.KING,
new int[][] { new int[] { -3, -4, -4, -5, -5, -4, -4, -3 },
new int[] { -3, -4, -4, -5, -4, -4, -4, -3 }, new int[] { -3, -4, -4, -5, -4, -4, -4, -3 },
new int[] { -3, -4, -4, -5, -4, -4, -4, -3 }, new int[] { -2, -3, -3, -2, -2, -2, -2, -1 },
new int[] { -1, -2, -2, -2, -2, -2, -2, -1 }, new int[] { 2, 2, 0, 0, 0, 0, 2, 2 },
new int[] { 2, 3, 1, 0, 0, 1, 3, 2 } });
positionScores.put(Type.QUEEN,
new int[][] { new int[] { -2, -1, -1, -1, -1, -1, -1, -2 }, new int[] { -1, 0, 0, 0, 0, 0, 0, -1 },
new int[] { -1, 0, 1, 1, 1, 1, 0, -1 }, new int[] { -1, 0, 1, 1, 1, 1, 0, -1 },
new int[] { 0, 0, 1, 1, 1, 1, 0, -1 }, new int[] { -1, 1, 1, 1, 1, 1, 0, -1 },
new int[] { -1, 0, 1, 0, 0, 0, 0, -1 }, new int[] { -2, -1, -1, -1, -1, -1, -1, -2 } });
positionScores.put(Type.ROOK,
new int[][] { new int[] { 0, 0, 0, 0, 0, 0, 0, 0 }, new int[] { 1, 1, 1, 1, 1, 1, 1, 1 },
new int[] { -1, 0, 0, 0, 0, 0, 0, -1 }, new int[] { -1, 0, 0, 0, 0, 0, 0, -1 },
new int[] { -1, 0, 0, 0, 0, 0, 0, -1 }, new int[] { -1, 0, 0, 0, 0, 0, 0, -1 },
new int[] { -1, 0, 0, 0, 0, 0, 0, -1 }, new int[] { 0, 0, 0, 1, 1, 0, 0, 0 } });
positionScores.put(Type.KNIGHT,
new int[][] { new int[] { -5, -4, -3, -3, -3, -3, -4, -5 }, new int[] { -4, -2, 0, 0, 0, 0, -2, -4 },
new int[] { -3, 0, 1, 2, 2, 1, 0, -3 }, new int[] { -3, 1, 2, 2, 2, 2, 1, -3 },
new int[] { -3, 0, 2, 2, 2, 2, 0, -1 }, new int[] { -3, 1, 1, 2, 2, 1, 1, -3 },
new int[] { -4, -2, 0, 1, 1, 0, -2, -4 }, new int[] { -5, -4, -3, -3, -3, -3, -4, -5 } });
positionScores.put(Type.BISHOP,
new int[][] { new int[] { -2, -1, -1, -1, -1, -1, -1, 2 }, new int[] { -1, 0, 0, 0, 0, 0, 0, -1 },
new int[] { -1, 0, 1, 1, 1, 1, 0, -1 }, new int[] { -1, 1, 1, 1, 1, 1, 1, -1 },
new int[] { -1, 0, 1, 1, 1, 1, 0, -1 }, new int[] { -1, 1, 1, 1, 1, 1, 1, -1 },
new int[] { -1, 1, 0, 0, 0, 0, 1, -1 }, new int[] { -2, -1, -1, -1, -1, -1, -2 } });
positionScores.put(Type.PAWN,
new int[][] { new int[] { 0, 0, 0, 0, 0, 0, 0, 0 }, new int[] { 5, 5, 5, 5, 5, 5, 5, 5 },
new int[] { 1, 1, 2, 3, 3, 2, 1, 1 }, new int[] { 0, 0, 1, 3, 3, 1, 0, 0 },
new int[] { 0, 0, 0, 2, 2, 0, 0, 0 }, new int[] { 0, 0, -1, 0, 0, -1, 0, 0 },
new int[] { 0, 1, 1, -2, -2, 1, 1, 0 }, new int[] { 0, 0, 0, 0, 0, 0, 0, 0 } });
}
public Board() {
boardArr = new Piece[8][8];
kingPos = new HashMap<>();
@ -182,23 +219,27 @@ public class Board implements Cloneable {
int score = 0;
for (int i = 0; i < 8; i++)
for (int j = 0; j < 8; j++)
if (boardArr[i][j] != null && boardArr[i][j].getColor() == color) switch (boardArr[i][j].getType()) {
if (boardArr[i][j] != null && boardArr[i][j].getColor() == color) {
switch (boardArr[i][j].getType()) {
case QUEEN:
score += 8;
score += 90;
break;
case ROOK:
score += 5;
score += 50;
break;
case KNIGHT:
score += 3;
score += 30;
break;
case BISHOP:
score += 3;
score += 30;
break;
case PAWN:
score += 1;
score += 10;
break;
}
if (positionScores.containsKey(boardArr[i][j].getType()))
score += positionScores.get(boardArr[i][j].getType())[i][color == Color.WHITE ? j : 7 - j];
}
return score;
}

6
src/dev/kske/chess/ui/GameModeDialog.java
View File

@ -53,7 +53,7 @@ public class GameModeDialog extends JDialog {
btnAI.addActionListener((evt) -> {
Map<Color, Player> players = new HashMap<>();
players.put(Color.WHITE, new NaturalPlayer(board, Color.WHITE, overlayComponent));
players.put(Color.BLACK, new AIPlayer(board, Color.BLACK, 4));
players.put(Color.BLACK, new AIPlayer(board, Color.BLACK, 5));
new Game(players, boardComponent).start();
dispose();
});
@ -62,8 +62,8 @@ public class GameModeDialog extends JDialog {
JButton btnAI2 = new JButton("AI against AI");
btnAI2.addActionListener((evt) -> {
Map<Color, Player> players = new HashMap<>();
players.put(Color.WHITE, new AIPlayer(board, Color.WHITE, 4));
players.put(Color.BLACK, new AIPlayer(board, Color.BLACK, 3));
players.put(Color.WHITE, new AIPlayer(board, Color.WHITE, 5));
players.put(Color.BLACK, new AIPlayer(board, Color.BLACK, 4));
new Game(players, boardComponent).start();
dispose();
});