bool cancastleshort() {
if (wturn == 1 && kwmov == 1)
return 0;
else if (wturn == 0 && kbmov == 1)
return 0;
else if (wturn == 1 && isbetween(map[7][7], map[7][4]) == 0 && board[7][7] == "Rw" &&
wkrookmov == 0){
int x;
for (x = 4; x < 7; x++) {
if (checkcheck(7, x) == 1)
return 0;
}
return 1;
}
else if (wturn == 0 && isbetween(map[0][7], map[0][4]) == 0 && board[0][7] == "Rb" &&
bkrookmov == 0){
int x;
for (x = 4; x < 7; x++) {
if (checkcheck(0, x) == 1)
return 0;
}
return 1;
}
}
int kingmoves() {
int i, j;
int kingx = kingfinder(0);
int kingy = kingfinder(1);
int count = 0;
for (i = 0; i < 8; i++) {
for (j = 0; j < 8; j++) {
char* square = board[i][j];
char status = square[1];
if (wturn == 1 && arraydistance(map[kingx][kingy], map[i][j]) == 1 && status != 'w'
&& checkcheck(i, j) == 0) {
movearray[count] = map[i][j];
count++;
}
else if (wturn == 0 && arraydistance(map[kingx][kingy], map[i][j]) == 1
&& status != 'b' && checkcheck(i, j) == 0) {
movearray[count] = map[i][j];
count++;
}
}
}
return count;
}
bool testallmoves() {
char testlist[13] = {'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'K', 'Q', 'R', 'N', 'B'};
int i, j, x;
for (i = 0; i < 8; i++) {
for (j = 0; j < 8; j++) {
for (x = 0; x < 13; x++) {
char* sqr = map[i][j];
if (x > 7) {
char tst[4];
tst[0] = testlist[x];
tst[1] = sqr[0];
tst[2] = sqr[1];
tst[3] = '\0';
char* boardchk[8][8];
memcpy(boardchk, board, sizeof(board));
turn(tst);
if (checkcheck(-1, -1) == 0) {
memcpy(board, boardchk, sizeof(board));
return 1;
}
memcpy(board, boardchk, sizeof(board));
}
else {
char tst[3];
tst[0] = sqr[0];
tst[1] = sqr[1];
tst[2] = '\0';
char* boardchk[8][8];
memcpy(boardchk, board, sizeof(board));
turn(tst);
if (checkcheck(-1, -1) == 0) {
memcpy(board, boardchk, sizeof(board));
return 1;
}
memcpy(board, boardchk, sizeof(board));
}
}
}
}
return 0;
}
bool caneat() {
char testlist[13] = {'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'K', 'Q', 'R', 'N', 'B'};
char* sqr = prevsquare;
int i;
for (i = 0; i < 13; i++) {
char tst[5];
tst[0] = testlist[i];
tst[1] = 'x';
tst[2] = prevsquare[0];
tst[3] = prevsquare[1];
tst[4] = '\0';
char *boardchk[8][8];
memcpy(boardchk, board, sizeof(board));
turn(tst);
if (memcmp(board, boardchk, sizeof(board)) != 0 && checkcheck(-1, -1) == 0) {
memcpy(board, boardchk, sizeof(board));
return 1;
}
memcpy(board, boardchk, sizeof(board));
}
return 0;
}
void FstopComms::respondWrite()
{
if(!checkcheck())
return;
unsigned int addr=getAddr();
char len=cmd[PKT_LEN];
if(len < 1 || len > PKT_MAXREQ || addr < EEPROM_MIN_WRITE || addr+len > EEPROM_MAX_WRITE){
nak(BAD_WRITE);
return;
}
// copy from buffer to EEPROM
char bp=PKT_SHORTHDR;
for(char i=0;i<len;++i){
EEPROM.write(addr++, cmd[bp++]);
}
cmd[PKT_CMD]=COM_WRITEACK;
buflen=PKT_SHORTHDR;
// recompute checksum, send without data
txCmd();
}
bool checkmate() {
if (checkcheck(-1,-1) == 1 && caneat() == 0 && testallmoves() == 0)
return 1;
else
return 0;
}
bool cancastlelong() {
if (wturn == 1 && kwmov == 1)
return 0;
else if (wturn == 0 && kbmov == 1)
return 0;
else if (wturn == 1 && isbetween(map[7][0], map[7][4]) == 0 && board[7][0] == "Rw" &&
wqrookmov == 0){
int j;
for (j = 1; j < 4; j++) {
if (checkcheck(7, j) == 1)
return 0;
}
return 1;
}
else if (wturn == 0 && isbetween(map[0][0], map[0][4]) == 0 && board[0][0] == "Rb" &&
bqrookmov == 0){
int j;
for (j = 1; j < 4; j++) {
if (checkcheck(0, j) == 1)
return 0;
}
return 1;
}
else
return 0;
}
void pturn() {
while (true) {
if (checkmate() == 1) {
printf("Checkmate!");
break;
}
if (checkcheck(-1, -1))
printf("Check!\n");
char *boardchk[8][8];
memcpy(boardchk, board, sizeof(board));
boardprint();
char move[10];
printf("Please type a move in standard chess notation: ");
scanf("%s", move);
turn(move);
if (checkcheck(-1, -1)) {
memcpy(board, boardchk, sizeof(board));
printf("Can not move into check!\n");
}
if (memcmp(board, boardchk, sizeof(board)) != 0)
(wturn == 1) ? (wturn = 0) : (wturn = 1);
}
}
void FstopComms::respondRead()
{
if(!checkcheck())
return;
unsigned int addr=getAddr();
char len=cmd[PKT_LEN];
if(len < 1 || len > PKT_MAXREQ || addr < EEPROM_MIN_READ || addr+len > EEPROM_MAX_READ){
nak(BAD_READ);
return;
}
// read from EEPROM into buffer
cmd[PKT_CMD]=COM_READACK;
for(char i=0;i<len;++i){
cmd[i+PKT_SHORTHDR]=EEPROM.read(addr++);
}
buflen=len+PKT_SHORTHDR;
// append checksum and send.
txCmd();
}
