int main(int argc, char* argv[]){
displayMode = CONSOLE;
if(argc>1){
if (str_equals(argv[1], "gui")){
displayMode = GUI;
}
}
int initializationError = initialize();
if (initializationError == 1){ // allocation error occured
allocationFailed();
}
else if (initializationError == 2){ // SDL failed to initialize
exit(0);
}
display();
while (1){
if (isEndGame()){
if (displayMode == CONSOLE){
break;
}
else{
gameEnded = 1;
}
}
if (turn != player1 && gameMode == SINGLE_PLAYER_MODE && !gameEnded){
if (computerTurn()){
allocationFailed();
}
}
else{
short error = humanTurn(turn);
if (error != 0 && error != 2){ //error occured or "start" command entered
return error;
}
}
}
if (displayMode == CONSOLE){
printEndGameResults();
}
return 0;
}
STATUS CChessGame :: playMoveOnBoard(BOARD_POSITION init, BOARD_POSITION dest,
CHESSPIECE_GENERAL newCp,
MOVE_CLAIM mClaim = CLAIM_NONE)
{
STATUS status;
CHECK_STATUS cStatus;
MOVELIST *mList, *tempList;
CZobrist zob;
UINT64 currentHash;
UINT8 count = 1, currentSeqNum;
status = validateMove(init, dest, MVT_GENERAL);
if((status & MOVE_PAWN_PROMOTED) &&
newCp == CHESSPIECE_TYPE(INVALID_CHESSPIECE))
{
//pawn promotion should provide new piece also
if(playerType[gState.turn] != PT_COMPUTER)
{
newCp = getNewPieceFromUser();
}
else
{
status = MOVE_ILLEGAL;
}
}
if(status & MOVE_SUCCESS)
{
(void)makeMove(init, dest, newCp, status);
mList = (MOVELIST *)moveList.getTail();
if(mList != NULL)
{
//status must have got updated after makemove...
status = mList->status;
cStatus = scan4Check(init, dest, CHECK);
if(isEndGame())
{
if(cStatus == CHECK)
{
status |= MOVE_CHECKMATE;
//printf("Checkmate\n");
}
else
{
status |= MOVE_STALEMATE;
//printf("Stalemate\n");
}
}
else if(cStatus == CHECK)
{
status |= MOVE_CHECK;
//printf("Itz a check!!\n");
}
/* Form the SAN notation for the MOVE */
mList->status = status; //This is needed for SAN
(void)updateCANString(mList);
(void)updateSANString(mList, TRUE);
(void)updateFENString(mList->FEN);
//check if 50 move repetition happened
if(gState.draw50HalfMoveCount >= 50)
{
mList->status |= MOVE_DRAW_50MOVE_ACTIVE;
}
//check for insufficient material draw
tempList = (MOVELIST *)moveList.getPrev((DLL_NODE *)mList);
if((tempList != NULL && tempList->status & MOVE_DRAW_INSUFFICIENT_PIECES_ACTIVE) ||
insufficientMatingMaterial(getLastFENString()) == TRUE)
{
mList->status |= MOVE_DRAW_INSUFFICIENT_PIECES_ACTIVE;
}
// Update zobrist Hash
zob.updateBoardPosition(getLastFENString());
zob.calculateZobristHash();
mList->zobristHash = zob.getZobristHash();
currentHash = mList->zobristHash;
currentSeqNum = gState.seqNum;
//check if 3 move repetition happened
for(tempList = (MOVELIST *)moveList.getPrev((DLL_NODE *)mList);
tempList != NULL;
tempList = (MOVELIST *)moveList.getPrev((DLL_NODE *)tempList))
{
if(tempList->seqNum != currentSeqNum)
{
break;
}
if(tempList->zobristHash == currentHash)
{
//add more detailed check using FEN string if required
count++;
}
if(count == 3)
{
break;
}
}
if(count == 3)
{
mList->status |= MOVE_DRAW_3MOVE_ACTIVE;
}
status = mList->status;
}
toggleTurn();
}
return status;
}
STATUS CChessGame :: makeGeneratedMove(MOVELIST move)
{
STATUS status;
CHECK_STATUS cStatus;
MOVELIST *mList, *tempList;
UINT64 currentHash;
UINT8 count = 1, currentSeqNum;
CZobrist zob;
CHESSPIECE_GENERAL newCp = CHESSPIECE_GENERAL(CHESSPIECE_TYPE((move.status >> 24)));
status = makeMove(move.init, move.dest, newCp, move.status);
mList = (MOVELIST *)moveList.getTail();
if(mList != NULL)
{
cStatus = scan4Check(move.init, move.dest, CHECK);
if(isEndGame())
{
if(cStatus == CHECK)
{
status |= MOVE_CHECKMATE;
//printf("Checkmate\n");
}
else
{
status |= MOVE_STALEMATE;
//printf("Stalemate\n");
}
}
else if(cStatus == CHECK)
{
status |= MOVE_CHECK;
//printf("Itz a check!!\n");
}
/* Form the SAN notation for the MOVE */
mList->status = status; //This is needed for SAN
(void)updateCANString(mList);
(void)updateSANString(mList, TRUE);
(void)updateFENString(mList->FEN);
//check if 50 move repetition happened
if(gState.draw50HalfMoveCount >= 50)
{
mList->status |= MOVE_DRAW_50MOVE_ACTIVE;
}
//check for insufficient material draw
tempList = (MOVELIST *)moveList.getPrev((DLL_NODE *)mList);
if((tempList != NULL && tempList->status & MOVE_DRAW_INSUFFICIENT_PIECES_ACTIVE) ||
insufficientMatingMaterial(getLastFENString()) == TRUE)
{
mList->status |= MOVE_DRAW_INSUFFICIENT_PIECES_ACTIVE;
}
// Update zobrist Hash
zob.updateBoardPosition(getLastFENString());
zob.calculateZobristHash();
mList->zobristHash = zob.getZobristHash();
currentHash = mList->zobristHash;
currentSeqNum = gState.seqNum;
//check if 3 move repetition happened
for(tempList = (MOVELIST *)moveList.getPrev((DLL_NODE *)mList);
tempList != NULL;
tempList = (MOVELIST *)moveList.getPrev((DLL_NODE *)tempList))
{
if(tempList->seqNum != currentSeqNum)
break;
if(tempList->zobristHash == currentHash)
{
//add more detailed check using FEN string if required
count++;
}
if(count == 3)
{
break;
}
}
if(count == 3)
{
mList->status |= MOVE_DRAW_3MOVE_ACTIVE;
}
status = mList->status;
}
return status;
}
