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ArduChess
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Small optimizations, add benchmark

This commit is contained in:
Quinten Kock 2020-06-16 04:30:02 +02:00
parent a995784aac
commit 3702bddfd3
2 changed files with 20 additions and 18 deletions
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10
ArduChess.ino
View File

@ -35,14 +35,20 @@ void setup() {
//delay(1000);
Serial.println(F("hello"));
b = Board();
int startTime = micros();
b.make({0x14, 0x34, P_EMPTY});
b.make({0x64, 0x54, P_EMPTY});
b.make({0x34, 0x44, P_EMPTY});
b.make({0x63, 0x43, P_EMPTY});
b.print();
//b.print();
b.make({0x44, 0x53, P_EMPTY});
b.print();
//b.print();
int elapsed = micros() - startTime;
Serial.print(elapsed);
Serial.println("microseconds for 5 moves");
}

28
Board.h
View File

@ -98,7 +98,7 @@ void Board::make(Move m) {
u.sq_from = m.sq_from;
u.sq_to = m.sq_to;
byte piece_type = field[m.sq_from] & 0x8;
byte piece_type = field[m.sq_from] & 0x7;
if(u.captured || piece_type == W_PAWN) {
field[PTR_REVMOV]++;
@ -115,7 +115,7 @@ void Board::make(Move m) {
// TODO do any castling testing
// Handle castling
if((m.sq_from & 0b111) == W_KING && sq_diff_abs == 2) {
if(piece_type == 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
@ -148,19 +148,15 @@ void Board::make(Move m) {
// TODO: test enpassant code more than basics
// handle enpassant capture
if(field[PTR_ENPASSANT] && (field[m.sq_from] & 0b111) == W_PAWN) {
// en-passant capture is allowed.
// we are also doing a pawn move
// do further checks to see if we should remove the EP-pawn.
if(
(m.sq_to & 0x7) == (field[PTR_ENPASSANT] & 0x7) &&
(m.sq_to & 0x70) == (0x50 - 0x30*black_moving())
) {
// we are also going to the correct square to do EP.
// therefore, delete the EP-vurnerable pawn
byte ep_field = m.sq_to - 16 + 32*black_moving();
field[ep_field] = P_EMPTY;
}
if(
field[PTR_ENPASSANT] && piece_type == W_PAWN &&
(m.sq_to & 0x7) == (field[PTR_ENPASSANT] & 0x7) &&
(m.sq_to & 0x70) == (0x50 - 0x30*black_moving())
) {
// we are also going to the correct square to do EP.
// therefore, delete the EP-vurnerable pawn
byte ep_field = m.sq_to - 16 + 32*black_moving();
field[ep_field] = P_EMPTY;
}
// Store the current enpassant situation
@ -168,7 +164,7 @@ void Board::make(Move m) {
// handle enpassant setup (double pawn move)
if(
(field[m.sq_from] & 0b111) == W_PAWN &&
piece_type == W_PAWN &&
(sq_diff == 32 || sq_diff == -32)
) {
// we are doing a pawn double-move.