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Hopefully add castling

This commit is contained in:
Quinten Kock 2020-06-16 03:57:40 +02:00
parent e4c7dcc7e2
commit a995784aac
1 changed files with 46 additions and 5 deletions
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51
Board.h
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@ -93,16 +93,59 @@ void Board::print() {
void Board::make(Move m) {
// fill unmove struct with basic data
Unmove u;
u.revmov = field[PTR_REVMOV];
u.captured = field[m.sq_to];
u.sq_from = m.sq_from;
u.sq_to = m.sq_to;
// TODO handle castling
// TODO handle castling rights
byte piece_type = field[m.sq_from] & 0x8;
if(u.captured || piece_type == W_PAWN) {
field[PTR_REVMOV]++;
} else {
field[PTR_REVMOV] = 0;
}
// Calculate the move 'amount' (unique signature for dx,dy)
int sq_diff = (int)m.sq_from - (int)m.sq_to;
int sq_diff_abs = abs(sq_diff);
// TODO handle revmov clock
// TODO zobrist
// TODO: test enpassant code
// TODO do any castling testing
// Handle castling
if((m.sq_from & 0b111) == W_KING && sq_diff_abs == 2) {
// We are castling! After all, a king cannot move
// more than one position except when castling.
// Since we don't care about legality; just do it
byte castle_source = 0x70*black_moving();
if(sq_diff == 2) {
castle_source += 0x7;
}
byte castle_target = m.sq_from + (sq_diff/2);
field[castle_target] = field[castle_source];
field[castle_source] = P_EMPTY;
}
// Handle castling rights
// We are doing the simple way:
// unset it any time a move is made from the original position.
if(m.sq_from == 0x00)
field[PTR_SIDE_AND_CASTLERIGHT] &= ~0b00010;
if(m.sq_from == 0x07)
field[PTR_SIDE_AND_CASTLERIGHT] &= ~0b00100;
if(m.sq_from == 0x04)
field[PTR_SIDE_AND_CASTLERIGHT] &= ~0b00110;
if(m.sq_from == 0x70)
field[PTR_SIDE_AND_CASTLERIGHT] &= ~0b01000;
if(m.sq_from == 0x77)
field[PTR_SIDE_AND_CASTLERIGHT] &= ~0b10000;
if(m.sq_from == 0x74)
field[PTR_SIDE_AND_CASTLERIGHT] &= ~0b11000;
// TODO: test enpassant code more than basics
// handle enpassant capture
if(field[PTR_ENPASSANT] && (field[m.sq_from] & 0b111) == W_PAWN) {
@ -124,8 +167,6 @@ void Board::make(Move m) {
u.enpassant = field[PTR_ENPASSANT];
// handle enpassant setup (double pawn move)
// Calculate the move 'amount'
int sq_diff = (int)m.sq_from - (int)m.sq_to;
if(
(field[m.sq_from] & 0b111) == W_PAWN &&
(sq_diff == 32 || sq_diff == -32)