int main() {
char playAgain;
do {
nodes_expanded = 0;
//initialize the board.
char *board = newBoard();
//get player and computer characters.
char playerPiece = askUser("\nPlease choose your character (x or o): ", X, O);
char computerPiece = getOpponentPiece(playerPiece);
//check if player wants to play first.
char ch = askUser("\nDo you want to play first ? (y or n): ", 'y', 'n');
if(ch == 'y') {
makePlayerMove(board, playerPiece);
}
else if(ch == 'n') {
}
char winner;
int turn = COMPUTER;
//game loop.
while(!isFilled(board) && (winner = whoWon(board)) == NONE) {
if(turn == COMPUTER) {
makeComputerMove(board, computerPiece);
turn = PLAYER;
}
else {
makePlayerMove(board, playerPiece);
turn = COMPUTER;
}
}
printBoard(board);
//print results.
if(winner == playerPiece) {
printf("\n$ Congratulations! you have won. $\n");
}
else if(winner == NONE) {
printf("\n* The game is a draw. *\n");
}
else {
printf("\n@ You Lose!! @\n");
}
printf("\nNumber of nodes expanded: %d", nodes_expanded);
//ask if user wants to play again.
playAgain = askUser("\n Do you want to play again? (y or n): ", 'y', 'n');
}while(playAgain == 'y');
return 0;
}
void gameloop(struct game *state)
{
printf("gameloop: current board '%s' with player %c\n",state->board,state->player);
displayGame(state);
if(gameover(state) == 1) {
return;
}
makePlayerMove(state,getPlayerMove(state));
displayGame(state);
if(gameover(state) == 1) {
return;
}
makeComputerMove(state);
gameloop(state);
}
