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Source Code Sample

Home Up Case Analysis Source Code Sample

 

/************************************************************************/

/* NAME: Ricky Shah */

/* STUDENT ID: 38104916 */

/* EMAIL: shahrr@uci.edu */

/* TA NAME: Akira Hatanaka */

/* Program: Tic Tac Toe */

/************************************************************************/

//This is the Tic Tac Toe Game class

public class TicTacToe

{

private static char[][] plays= new char[3][3];

private static char turn; //private variables

private static int numPlays=0;

//Precondition: None

//Postcondition: all variables are cleared along with the board

public TicTacToe()

{

clearBoard(); //the default constructor clears teh board, setting everything to zero

}

//Precondition: None

//Postcondition: all variables are cleared along with the board

public void clearBoard()

{

for(int row=0; row<3; row++)

for(int col=0; col<3; col++)

{

plays[row][col]=' '; //goes through all nine spaces in array

} //and replaces data with a ' '

turn='X'; //sets the intial player to X

numPlays=0; //set the total number of plays on the board to zero

}

//Precondition: None

//Postcondition: displays the board on screen

public void printBoard()

{

System.out.println("(R/C) 1 2 3");

System.out.println(" -------------------------");

System.out.println(" | | | |");

System.out.println(" 1 | "+plays[0][0]+" | "+plays[0][1]+" | "+plays[0][2]+" |");

System.out.println(" |_______|_______|______ |");

System.out.println(" | | | |");

System.out.println(" 2 | "+plays[1][0]+" | "+plays[1][1]+" | "+plays[1][2]+" |");

System.out.println(" |_______|_______|______ |");

System.out.println(" | | | |");

System.out.println(" 3 | "+plays[2][0]+" | "+plays[2][1]+" | "+plays[2][2]+" |");

System.out.println(" | | | |");

System.out.println(" -------------------------");

}

//Precondition: None

//Postcondition: returns true if there is a winner, or else false

private boolean isThereWinner()

{

int row, col;

//checks to see if one player has whole row completed

for(row=0; row<3; row++)

{

if ((plays[row][0]==plays[row][1] && plays[row][0]==plays[row][2]) && plays[row][0]!=' ')

return true;

}

//cheacks to see it one player has whole column completed

for(col=0; col<3; col++)

{

if ((plays[0][col]==plays[1][col] && plays[0][col]==plays[2][col]) && plays[2][col]!=' ')

return true;

}

//checks is one player completed either diagonal

if ((plays[0][0]==plays[1][1] && plays[0][0]==plays[2][2]) && plays[0][0]!=' ')

return true;

if ((plays[0][2]==plays[1][1] &&plays[0][2]==plays[2][0]) && plays[0][2]!=' ')

return true;

return false;

}

//Precondition: None

//Postcondition: Controls entire game

public void takeUserInput()

{

char choice;

int moveRow, moveCol;

if (numPlays == 9) //if the board is full, end the game

{

System.out.println("Board Full. No Winner.");

return;

}

else

{

System.out.println("It's "+ whoseTurn()+"'s turn. ");

System.out.println("Where would you like to make your move? ");

do{

System.out.print("Row: ");

//precondition for readInt is that only integers are entered

moveRow=SavitchIn. readInt( );

System.out.print("Col: ");

moveCol=SavitchIn. readInt( );

if (moveRow>3 || moveRow<1 || moveCol>3 || moveCol<1) //checks to make sure point is on board

System.out.println("Out of bounds. Enter 1, 2 or 3 only");

}

while(moveRow>3 || moveRow<1 || moveCol>3 || moveCol<1);

if (plays[moveRow-1][moveCol-1]!=' ') //makes sure that move is only placed on empty space

{

do{

System.out.println("Error: Space is taken. Try another space");

do{

System.out.print("Row: ");

moveRow=SavitchIn. readInt( );

System.out.print("Col: ");

moveCol=SavitchIn. readInt( );

if (moveRow>3 || moveRow<1 || moveCol>3 || moveCol<1)

System.out.println("Out of bounds. Enter 1, 2 or 3 only");

}while(moveRow>3 || moveRow<1 || moveCol>3 || moveCol<1);

}while (plays[moveRow-1][moveCol-1]!=' ');

}

System.out.println("You chose Row: "+ moveRow);

System.out.println("You chose Col: "+ moveCol); //confirms input of user

plays[moveRow-1][moveCol-1]=whoseTurn(); //sets data in array

numPlays++; //updates the number of plays

printBoard();

if (isThereWinner()) //if there is a winner, the winner is printed then exits

{

System.out.println();

System.out.println("********"+whoseTurn()+ " is the winner. *********");

System.out.println();

return;

}

else

nextTurn(); //or else is switched players

}

}

//Precondition: None

//Postcondition: return whose turn it is

public char whoseTurn()

{

return turn; //returns the private varialbe turn

}

//Precondition: None

//Postcondition: changes whose turn is it and then calls the takeuser input function

private void nextTurn()

{

if (turn=='X')

turn='O';

else

turn='X';

takeUserInput();

}

}