Elysian Shadows

Code: Select all

//Open-source tic-tac-toe by Alex Wilson (MechMarauderIIC@hotmail.com)
//Feel free to distribute and modify without giving any credit to me at all whatsoever.
//Dedicated to JSLemming's keyboard ;)

#include <iostream>
#include <ctype.h>
#include <string>

char board[3][3] = {
					'n', 'n', 'n',
					'n', 'n', 'n',
					'n', 'n', 'n'
					};
void displayBoard();
bool doChecks(char checking);

using namespace std;
int main() {
 
	string userInput = " ";
	int player = 1;
	int x, y = -1;
	cout << "please note that the coordinates are zero based." << endl;
	displayBoard();
	do {
		cout << "player: " << player << ": x-coordinate? ";
		getline(cin, userInput);

		if (!(isdigit(userInput[0]))) {
			continue;
		}
		x = atoi(userInput.c_str());
		cout << endl << "player: " << player << ": y-coordinate? ";
		getline(cin, userInput);
		if (!(isdigit(userInput[0]))) {
			cout << "not a digit" << endl;
			x = y = -1;
			continue;
		}
		y = atoi(userInput.c_str());
		if (y < 0 || x < 0 || y > 2 || x > 2) {
			cout << "invalid" << endl;
			x = y = -1;
			continue;
		}
		if (board[x][y] != 'n') {
			cout << "spot taken" << endl;
			x = y = -1;
			continue;
		}
		if (player == 1) {
			board[x][y] = 'x';
		} else if (player == 2) {
			board[x][y] = 'o';
		}
		displayBoard();
		if (player == 1) {
			if (doChecks('x')) {
				cout << "p1 == WINNER!!!" << endl;
				break;
			}
			player = 2;
		} else {
			if (doChecks('o')) {
				cout << "p2 == WINNER!!" << endl;
				break;
			}
			player = 1;
		}
	} while (userInput[0] != 'q');
	cout << "done - hit enter to quit" << endl;
	getline(cin, userInput);
	return 0;
}

void displayBoard() {
	cout << endl << endl << endl << endl;
	cout << " 012" << endl;
	for (unsigned int ycount = 0;ycount < 3;ycount++) {
		cout << ycount;
		for (unsigned int xcount = 0;xcount < 3;xcount++) {
			cout << board[xcount][ycount];
		}
		cout << endl;
	}
}

bool doChecks(char checking) {
	//cheap cruddy checks
	int soFar = 0;
	unsigned int xcheck, ycheck;

	//vert checks
	for (xcheck = 0;xcheck < 3;xcheck++) {
		for (ycheck = 0;ycheck < 3;ycheck++) {
			if (board[xcheck][ycheck] != checking) {
				soFar = 0;
				break;
			}
			soFar++;
			if (soFar == 3)
				return true;
		}
		soFar = 0;
	}

	//horiz checks
	for (ycheck = 0;ycheck < 3;ycheck++) {
		for (xcheck = 0;xcheck < 3;xcheck++) {
			if (board[xcheck][ycheck] != checking) {
				soFar = 0;
				break;
			}
			soFar++;
			if (soFar == 3)
				return true;
		}
		soFar = 0;
	}

	//diagonal check
	if (board[1][1] != checking)
		return false;
	if ((board[0][0] == checking && board[2][2] == checking) ||
		(board[0][2] == checking && board[2][0] == checking))
	{
		return true;
	}
	return false;
}