Class5 tic tac toe

03week/ticTacToe.js

@@ -12,9 +12,11 @@ let board = [
   [' ', ' ', ' ']
 ];
 
+//Global variable
 let playerTurn = 'X';
 
-function printBoard() {
+//join() joins all elements of array into a string and prints each element of the board
+const printBoard= () => {
   console.log('   0  1  2');
   console.log('0 ' + board[0].join(' | '));
   console.log('  ---------');
@@ -23,27 +25,86 @@ function printBoard() {
   console.log('2 ' + board[2].join(' | '));
 }
 
-function horizontalWin() {
-  // Your code here
+/* function checks for horizontal wins. Returns true if some() function gets at least 1 element of horizontal
+  array to equal true for the 3 cases. If doesn't get one to return true will return falsey*/
+const horizontalWin= () => {
+  const horizontal = [0, 1, 2];
+  let result = horizontal.some(indices => {
+    return board[indices][0] == playerTurn && board[indices][1] == playerTurn && board[indices][2] == playerTurn
+  });
+
+  return result;
 }
 
-function verticalWin() {
-  // Your code here
+
+/* function checks for vertical wins. Returns true if some() function gets at least 1 element of vertical
+  array to equal true for the 3 cases. If doesn't get one to return true will return falsey*/
+const verticalWin= () => {
+  const vertical = [0, 1, 2];
+  let result1 = vertical.some(indx => {
+    return board[0][indx] == playerTurn && board[1][indx] == playerTurn && board[2][indx] == playerTurn
+  });
+
+  return result1;
+
 }
 
-function diagonalWin() {
-  // Your code here
+
+/* function checking for the 2 ways to win diagonally. */
+const diagonalWin= () => {
+  /*  if center space is equal to playerTurn then check the other 2.
+      Will return true if either of the 2 sets will evaluate to true, if not will
+      return falsey.
+  */
+  if (board[1][1] == playerTurn){
+    return board[0][0] == playerTurn && board[2][2] == playerTurn ||
+      board[0][2] == playerTurn && board[2][0] == playerTurn;
+  }
+
 }
 
-function checkForWin() {
-  // Your code here
+
+/* will call each of these functions and will return true if one
+of these functions returns true
+*/
+const checkForWin= () => {
+
+  return verticalWin() || horizontalWin() || diagonalWin();
 }
 
-function ticTacToe(row, column) {
-  // Your code here
+/* check if input is valid. Input must be 1 of the possibleNumbers, if not return
+   falsey
+*/
+const isValid= (row1, column1) => {
+  const possibleNumbers = [0, 1, 2];
+  return possibleNumbers.indexOf(parseInt(row1, 10)) !== -1 && possibleNumbers.indexOf(parseInt(column1, 10)) !== -1;
+
 }
 
-function getPrompt() {
+/* function takes in user input from 0-2. Will check if either of the players wins the
+game. Will console.log which player wins the game.       */
+const ticTacToe= (row, column) => {
+  // check for valid input. If invalid input will cosole.log message to user to enter numbers
+  if (isValid(row, column)) {
+    board[row][column] = playerTurn;
+
+     /* If true console.log who won the game. If falsey, will execute else statement and
+     switch users   */
+    if (checkForWin()) {
+      console.log(playerTurn + ' Has Won The Game!!!!');
+      return true;
+    } else {
+      playerTurn === 'X' ? playerTurn = 'O' : playerTurn = 'X';
+    }
+
+  } else {
+    console.log("Enter numbers 0-2 only!!!!!!!!");
+  }
+
+}
+/* function prompts user to enter coordinates on board. Function will call ticTacToe function and then
+call the prompt function(itself) again. */
+const getPrompt= () => {
   printBoard();
   console.log("It's Player " + playerTurn + "'s turn.");
   rl.question('row: ', (row) => {
@@ -55,31 +116,49 @@ function getPrompt() {
 
 }
 
-
-
-// Tests
+// Test cases
 
 if (typeof describe === 'function') {
 
   describe('#ticTacToe()', () => {
     it('should place mark on the board', () => {
       ticTacToe(1, 1);
-      assert.deepEqual(board, [ [' ', ' ', ' '], [' ', 'X', ' '], [' ', ' ', ' '] ]);
+      assert.deepEqual(board, [
+        [' ', ' ', ' '],
+        [' ', 'X', ' '],
+        [' ', ' ', ' ']
+      ]);
     });
     it('should alternate between players', () => {
       ticTacToe(0, 0);
-      assert.deepEqual(board, [ ['O', ' ', ' '], [' ', 'X', ' '], [' ', ' ', ' '] ]);
+      assert.deepEqual(board, [
+        ['O', ' ', ' '],
+        [' ', 'X', ' '],
+        [' ', ' ', ' ']
+      ]);
     });
     it('should check for vertical wins', () => {
-      board = [ [' ', 'X', ' '], [' ', 'X', ' '], [' ', 'X', ' '] ];
+      board = [
+        [' ', 'X', ' '],
+        [' ', 'X', ' '],
+        [' ', 'X', ' ']
+      ];
       assert.equal(verticalWin(), true);
     });
     it('should check for horizontal wins', () => {
-      board = [ ['X', 'X', 'X'], [' ', ' ', ' '], [' ', ' ', ' '] ];
+      board = [
+        ['X', 'X', 'X'],
+        [' ', ' ', ' '],
+        [' ', ' ', ' ']
+      ];
       assert.equal(horizontalWin(), true);
     });
     it('should check for diagonal wins', () => {
-      board = [ ['X', ' ', ' '], [' ', 'X', ' '], [' ', ' ', 'X'] ];
+      board = [
+        ['X', ' ', ' '],
+        [' ', 'X', ' '],
+        [' ', ' ', 'X']
+      ];
       assert.equal(diagonalWin(), true);
     });
     it('should detect a win', () => {