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Function Definition: function Intboard_To_Bitboard is new Unchecked_Conversion(Intboard,Bitboard);
Function Body: procedure Print_Intboard(I:Intboard) is
begin
Print_Bitboard(Intboard_To_Bitboard (I));
end Print_Intboard;
procedure Print_Intboard_45(I:Intboard) is
begin
Print_Bitboard_45(Intboard_To_Bitboard (I));
end Print_Intboard_45;
procedure Zero_Pieces is
begin
White_Rooks_I:=0;
Black_Rooks_I:=0;
White_Knights_I:=0;
Black_Knights_I:=0;
White_Bishops_I:=0;
Black_Bishops_I:=0;
White_Queens_I:=0;
Black_Queens_I:=0;
White_Kings_I:=0;
Black_Kings_I:=0;
White_Pawns_I:=0;
Black_Pawns_I:=0;
for I in 0..63 loop Chess_Board(I) := empty; end loop;
end Zero_Pieces;
procedure Init_Rotated_Boards is
K,L:Integer;
begin
for I in 0..7 loop
for J in 0..7 loop
All_Pieces_90_B(8*I+J) := All_Pieces_B(8*(7-J)+I);
end loop;
end loop;
L:=0;
All_Pieces_45r_I := 0;
All_Pieces_45l_I := 0;
for I in 0 .. 14 loop
for J in Integer'Max(0,I-7)..Integer'Min(7,I) loop
K:=I-J;
All_Pieces_45r_B(L) := All_Pieces_B(J*8+7-K);
To_45r(J*8+7-K):=L;
From_45r(L):=J*8+7-K;
Length_45r(L) := 1+Integer'Min(7,I)-Integer'Max(0,I-7);
Pos_45r(L) := J-Integer'Max(0,I-7);
Start_45r(L) := L-Pos_45r(L);
Start_45r_Rev(J*8+7-K) := Start_45r(L);
Mask_45r_rev(J*8+7-K):=Shift_Left((2**Length_45r(L)-1),Start_45r(L));
All_Pieces_45l_B(L) := All_Pieces_B(K*8+J);
-- if (K*8+J=36) then Put(Integer'Image(L));Put(Integer'Image(J));Put_line(Integer'Image(I)); end if;
To_45l(K*8+J):=L;
From_45l(L):=K*8+J;
Length_45l(L) := 1+Integer'Min(7,I)-Integer'Max(0,I-7);
Pos_45l(L) := J-Integer'Max(0,I-7);
Start_45l(L) := L-Pos_45l(L);
Start_45l_Rev(K*8+J) := Start_45l(L);
Mask_45l_rev(K*8+J):=Shift_Left((2**Length_45l(L)-1),Start_45l(L));
L:=L+1;
end loop;
end loop;
end Init_Rotated_Boards;
procedure Init_Pieces is
begin
White_Rooks_B(0) := 1;White_Rooks_B(7) := 1;
Chess_Board(0) := White_Rook; Chess_Board(7) := White_Rook;
Black_Rooks_B(56) := 1;Black_Rooks_B(63) := 1;
Chess_Board(56) := Black_Rook; Chess_Board(63) := Black_Rook;
White_Knights_B(1) := 1;White_Knights_B(6) := 1;
Chess_Board(1) := White_Knight; Chess_Board(6) := White_Knight;
Black_Knights_B(57) := 1;Black_Knights_B(62) := 1;
Chess_Board(57) := Black_Knight; Chess_Board(62) := Black_Knight;
White_Bishops_B(2) := 1;White_Bishops_B(5) := 1;
Chess_Board(2) := White_Bishop; Chess_Board(5) := White_Bishop;
Black_Bishops_B(58) := 1;Black_Bishops_B(61) := 1;
Chess_Board(58) := Black_Bishop; Chess_Board(61) := Black_Bishop;
White_Queens_B(3) := 1; Chess_Board(3) := White_Queen;
Black_Queens_B(59) := 1; Chess_Board(59) := Black_Queen;
White_Kings_B(4) := 1; Chess_Board(4) := White_King;
Black_Kings_B(60) := 1; Chess_Board(60) := Black_King;
for I in 0..7 loop
White_Pawns_B(I+8):=1; Chess_Board(I+8):=White_Pawn;
Black_Pawns_B(I+48):=1; Chess_Board(I+48):=Black_Pawn;
end loop;
end Init_Pieces;
procedure Save_State(S: out State) is
begin
S.White_Rooks_I:= White_Rooks_I;
S.Black_Rooks_I:= Black_Rooks_I;
S.White_Knights_I:= White_Knights_I;
S.Black_Knights_I:= Black_Knights_I;
S.White_Bishops_I:= White_Bishops_I;
S.Black_Bishops_I:= Black_Bishops_I;