chess/knight.java at master · c-brooks/chess · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115

public class Knight {

	public static String movesW(int i)
	{
		String move = "", oldPiece;
		String newPos = "";
		int r=i/8, c=i%8;

		for (int j=1; j>=-1; j-=2)
		{
			for (int k=1; k>=-1; k-=2)
			{
			if (j!=0 || k!=0)
				{
				try {
					newPos = Board.chessBoard[(r+2*j)][(c+k)];
					if (Character.isLowerCase(newPos.charAt(0)) || " ".equals(newPos))
						{
						oldPiece=newPos;
						Board.makeMove(""+r+c+((r+2*j))+(c+k)+oldPiece);
						if (King.kingSafeW())
							move = move+r+c+((r+2*j))+(c+k)+oldPiece;
						Board.undoMove(""+r+c+((r+2*j))+(c+k)+oldPiece);
						}
				} catch (Exception e) {};
				try {
					newPos = Board.chessBoard[(r+j)][(c+2*k)];
					if (Character.isLowerCase(newPos.charAt(0)) || " ".equals(newPos))
						{
						oldPiece=newPos;
						Board.makeMove(""+r+c+((r+j))+(c+2*k)+oldPiece);
						if (King.kingSafeW())
							move = move+r+c+((r+j))+(c+2*k)+oldPiece;
						Board.undoMove(""+r+c+((r+j))+(c+2*k)+oldPiece);
						}
					} catch (Exception e) {};
				}
			}
		}
		return move;
	}

	public static String movesB(int i)
	{
		String move = "", oldPiece;
		String newPos = "";
		int r=i/8, c=i%8;

		for (int j=1; j>=-1; j-=2)
		{
			for (int k=1; k>=-1; k-=2)
			{
			if (j!=0 || k!=0)
				{
				try {
					newPos = Board.chessBoard[(r+2*j)][(c+k)];
					if (Character.isUpperCase(newPos.charAt(0)) || " ".equals(newPos))
						{
						oldPiece=newPos;
						Board.makeMove(""+r+c+((r+2*j))+(c+k)+oldPiece);
						if (King.kingSafeB())
							move = move+r+c+((r+2*j))+(c+k)+oldPiece;
						Board.undoMove(""+r+c+((r+2*j))+(c+k)+oldPiece);
						}
				} catch (Exception e) {};
				try{
					newPos = Board.chessBoard[(r+j)][(c+2*k)];
					if (Character.isUpperCase(newPos.charAt(0)) || " ".equals(newPos))
						{
						oldPiece=newPos;
						Board.makeMove(""+r+c+((r+j))+(c+2*k)+oldPiece);
						if (King.kingSafeB())
							move = move+r+c+((r+j))+(c+2*k)+oldPiece;
						Board.undoMove(""+r+c+((r+j))+(c+2*k)+oldPiece);
						}
					} catch (Exception e) {};
				}
			}
		}
		return move;
	}
	public static void controlW(int i)
	{
		int r=i/8, c=i%8;

		for (int j=1; j>=-1; j-=2)
		{
			for (int k=1; k>=-1; k-=2)
			{
			if (j!=0 || k!=0)
				{
				try { BB.nMovesW[(r+2*j)*8+(c+k)] = true; } catch (Exception e) {};
				try { BB.nMovesW[(r+j)*8+(c+2*k)] = true; } catch (Exception e) {};
				}
			}
		}
	}
	public static void controlB(int i)
	{
		int r=i/8, c=i%8;

		for (int j=1; j>=-1; j-=2)
		{
			for (int k=1; k>=-1; k-=2)
			{
			if (j!=0 || k!=0)
				{
				try { BB.nMovesB[(r+2*j)*8+(c+k)] = true; } catch (Exception e) {};
				try { BB.nMovesB[(r+j)*8+(c+2*k)] = true; } catch (Exception e) {};
				}
			}
		}
	}
}