//Class function file

#include "board.h"

//constructor
Board::Board(){
	playerOneTurn = true;  //set move to player one
	for(int i = 0; i < 9; i++){    //create board
		boardData[i] = 0;  
	}
}


//print the board!
void Board::printBoard(){
	for(int i = 0; i < 9; i += 3){
		cout << " " << outputMarker(i) << " | " << outputMarker(i+1) << " | " << outputMarker(i+2) << "\n";
		
		//avoids printing a line at the end of the board
		if(i != 6){
			cout << "-----------\n";
		}
	}
}

//used by printBoard
char Board::outputMarker(int location){
	int type = boardData[location];
	char returnChar;

	if(type == 1){
		returnChar = 'X';   //X
	} else if(type == -1) {
		returnChar = 'O';   //O
	} else {
		switch(location + 1){  // No move is in the sector, get the number value of location.
			case 1:
				returnChar = '1';
				break;
			case 2:
				returnChar = '2';
				break;
			case 3:
				returnChar = '3';
				break;
			case 4:
				returnChar = '4';
				break;
			case 5:
				returnChar = '5';
				break;
			case 6:
				returnChar = '6';
				break;
			case 7:
				returnChar = '7';
				break;
			case 8:
				returnChar = '8';
				break;
			case 9:
				returnChar = '9';
				break;
			default:
				returnChar = '-';
		}
	
	}

	return returnChar;   //return results

}

//Function handler for making a move!
bool Board::makeMove(int location){
	if(!checkMove(location))
		return false;

	location--;   //translate the user interface numbers to array numbers
	
	if(playerOneTurn){  		//If its player's one turn
		playerOneTurn = false; 	//Make it player's two turn next time
	
		boardData[location] = 1; //make the move for player one
	} else {			 //has to be player two's turn
		playerOneTurn = true;

		boardData[location] = -1;  //Make the move for player two
	}

	return true;
}

//validates the move wanting to be made
bool Board::checkMove(int location){
	location--; //translate user input to array numbers
	if(location < 0 || location > 8 || boardData[location] != 0)   //Checks to see if move is on board, and if the spot is empty
		return false;
	else
		return true;

}

//gets player turn
int Board::getTurn(){
	if(playerOneTurn)
		return 1; //1 for player one

	if(!playerOneTurn)
		return 2; //2 for player two
}

//checks to see if there is a winner, returns -1 for cat game

int Board::checkWinner(){
	int i;  //Ill be using this in a lot of loops
	int value; //used for adding rows, cols, etc

	//check rows for winner
	for(i = 0; i < 9; i += 3){
		value = boardData[i] + boardData[i+1] + boardData[i+2];
		if(value == 3)
			return 1; //player one won!

		if(value == -3)
			return 2; //player two won!
	}

	//check cols for a winner
	for(i = 0; i <= 3; i++){
		value = boardData[i] + boardData[i+3] + boardData[i+6];
		if(value == 3)
			return 1; //player one won!

		if(value == -3)
			return 2; //player two won!
	}

	//check for wins not in cols or rows
	
	value = boardData[0] + boardData[4] + boardData[8];  //top left, middle, bottom right

	if(value == 3)
		return 1; //player one won!

	if(value == -3)
		return 2; //player two won!
	
	value = boardData[2] + boardData[4] + boardData[6];  //top right, middle, bottom left

	if(value == 3)
		return 1; //player one won!

	if(value == -3)
		return 2; //player two won!

	//check to see if game is over (I.E. No moves left)
	for(i = 0; i < 9; i++){
		if(boardData[i] == 0){
			return 0;   //Game is not over!  keep playing
		}
	}

	//well, noone one, and game is over, call it cat
	return -1;
}