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script.js
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script.js
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const container = document.querySelector(".container");
const playerTurn = document.getElementById("playerTurn");
const startScreen = document.querySelector(".startScreen");
const startButton = document.getElementById("start");
const message = document.getElementById("message");
let initialMatrix = [
[0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0],
];
let currentPlayer;
// Random Number Between Range
const generateRandomNumber = (min, max) =>
Math.floor(Math.random() * (max - min)) + min;
//Loop through array and check for same values
const verifyArray = (arrayElement) => {
let bool = false;
let elementCount = 0;
arrayElement.forEach((element, index) => {
if(element == currentPlayer) {
elementCount += 1;
if(elementCount == 4){
bool = true;
}
} else {
elementCount = 0;
}
});
return bool;
};
//Check for game over(Last step)
const gameOverCheck = () => {
let truthCount = 0;
for(let innerArray of initialMatrix) {
if(innerArray.every((val) => val != 0)) {
truthCount += 1;
} else {
return false;
}
}
if(truthCount == 6) {
message.innerText = "Game Over";
startScreen.classList.remove("hide");
}
};
//Check rows
const checkAdjacentRowValues = (row) => {
return verifyArray(initialMatrix[row]);
};
// Check columns
const checkAdjacentColumnValues = (column) => {
let colWinCount = 0, colWinBool = false;
initialMatrix.forEach((element, index) => {
if(element[column] == currentPlayer){
colWinCount += 1;
if(colWinCount == 4){
colWinBool = true;
}
} else {
colWinCount = 0;
}
});
// no match
return colWinBool;
};
// Get right diagonal values
const getRightDiagonal = (row, column, rowLength, columnLength) => {
let rowCount = row;
let columnCount = column;
let rightDiagonal = [];
while(rowCount > 0){
if(columnCount >= columnLength - 1) {
break;
}
rowCount -= 1;
columnCount += 1;
rightDiagonal.unshift(initialMatrix[rowCount][columnCount]);
}
rowCount = row;
columnCount = column;
while(rowCount < rowLength) {
if(columnCount < 0){
break;
}
rightDiagonal.push(initialMatrix[rowCount][columnCount]);
rowCount += 1;
columnCount -= 1;
}
return rightDiagonal;
}
const getLeftDiagonal = (row, column, rowLength, columnLength) => {
let rowCount = row;
let columnCount = column;
let leftDiagonal = [];
while(rowCount > 0){
if(columnCount <= 0) {
break;
}
rowCount -= 1;
columnCount -= 1;
leftDiagonal.unshift(initialMatrix[rowCount][columnCount]);
}
rowCount = row;
columnCount = column;
while(rowCount < rowLength) {
if(columnCount >= columnLength){
break;
}
leftDiagonal.push(initialMatrix[rowCount][columnCount]);
rowCount += 1;
columnCount += 1;
}
return leftDiagonal;
};
//Check Diagonals
const checkAdjacentDiagonalValues = (row, column) => {
let diagWinBool = false;
let tempChecks = {
leftTop : [],
rightTop : [],
};
let columnLength = initialMatrix[row].length;
let rowLength = initialMatrix.length;
//store left and right diagonal array
tempChecks.leftTop = [
...getLeftDiagonal(row, column, rowLength, columnLength),
];
tempChecks.rightTop = [
...getRightDiagonal(row, column, rowLength, columnLength),
];
// check both arrays for similarities
diagWinBool = verifyArray(tempChecks.rightTop);
if(!diagWinBool) {
diagWinBool = verifyArray(tempChecks.leftTop);
}
return diagWinBool;
}
// Win check logic
const winCheck = (row, column) => {
// if any of the functions return true we return true
return checkAdjacentRowValues(row)
? true
: checkAdjacentColumnValues(column)
? true
: checkAdjacentDiagonalValues(row, column)
? true
: false;
};
// Sets the circle to exact points
const setPiece = (startCount, colValue) => {
let rows = document.querySelectorAll(".grid-row");
// Initially it will place the circles in the last row else if no place available we will decrement the count until we find empty slot
if (initialMatrix[startCount][colValue] != 0) {
startCount -= 1;
setPiece(startCount, colValue);
} else {
//place circle
let currentRow = rows[startCount].querySelectorAll(".grid-box");
currentRow[colValue].classList.add("filled", `player${currentPlayer}`);
//Update matrix
initialMatrix[startCount][colValue] = currentPlayer;
//Check for wins
if (winCheck(startCount, colValue)) {
message.innerHTML = `Player<span>${currentPlayer}</span> wins`;
startScreen.classList.remove("hide");
return false;
}
}
// Check if all are full
gameOverCheck();
};
// When user clicks on a box
const fillBox = (e) => {
// get column value
let colValue = parseInt(e.target.getAttribute("data-value"));
// 5 becoz we have 6 (0-5)
setPiece(5, colValue);
currentPlayer = currentPlayer == 1 ? 2 : 1;
playerTurn.innerHTML = `Player <span>${currentPlayer}'s</span> turn`;
};
// Create Matrix
const matrixCreator = () => {
for (let innerArray in initialMatrix) {
let outerDiv = document.createElement("div");
outerDiv.classList.add("grid-row");
outerDiv.setAttribute("data-value", innerArray);
for (let j in initialMatrix[innerArray]) {
// Set all matrix values to 0
initialMatrix[innerArray][j] = [0];
let innerDiv = document.createElement("div");
innerDiv.classList.add("grid-box");
innerDiv.setAttribute("data-value", j);
innerDiv.addEventListener("click", (e) => {
fillBox(e);
});
outerDiv.appendChild(innerDiv);
}
container.appendChild(outerDiv);
}
};
// Initialize game
window.onload = startGame = async () => {
// Between 1 and 2
currentPlayer = generateRandomNumber(1, 3);
container.innerHTML = "";
await matrixCreator();
playerTurn.innerHTML = `Player <span>${currentPlayer}'s</span> turn.`;
};
//Start Game
startButton.addEventListener("click", () => {
startScreen.classList.add("hide");
startGame();
})