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📄 Viewing: ../../../../588869.klas4s23.mid-ica.nl/public_html/GAME/script.js

const canvas = document.getElementById('pongCanvas');
const context = canvas.getContext('2d');

const player = {
    x: 0,
    y: canvas.height / 2 - 50,
    width: 10,
    height: 100,
    score: 0,
    winCount: 0, // New property to track win count
    speed: 0
};

const robot = {
    x: canvas.width - 10,
    y: canvas.height / 2 - 50,
    width: 10,
    height: 100,
    score: 0,
    winCount: 0, // New property to track win count
};

const ball = {
    x: canvas.width / 2,
    y: canvas.height / 2,
    radius: 10,
    speedX: 5,
    speedY: 5,
    speed: 5 
};

const line = {
    x: canvas.width / 2 - 1,
};

function drawRect(x, y, width, height, color) {
    context.fillStyle = color;
    context.fillRect(x, y, width, height);
}

function drawCircle(x, y, radius, color) {
    context.fillStyle = color;
    context.beginPath();
    context.arc(x, y, radius, 0, Math.PI*2, false);
    context.closePath();
    context.fill();
}

function drawScore(text, x, y) {
    context.fillStyle = '#FFF';
    context.font = '20px Arial';
    context.fillText(text, x, y);
}

function resetBall() {
    ball.x = canvas.width / 2;
    ball.y = canvas.height / 2;
    ball.speedX = -ball.speedX;
    ball.speed = 5;
}

function collisionDetection(paddle, ball) {
    paddle.top = paddle.y;
    paddle.bottom = paddle.y + paddle.height;
    paddle.left = paddle.x;
    paddle.right = paddle.x + paddle.width;

    ball.top = ball.y - ball.radius;
    ball.bottom = ball.y + ball.radius;
    ball.left = ball.x - ball.radius;
    ball.right = ball.x + ball.radius;

    return paddle.right > ball.left && paddle.top < ball.bottom && paddle.left < ball.right && paddle.bottom > ball.top;
}

function resetGame() {
    player.score = 0;
    robot.score = 0;
    resetBall();
}


function update() {
    ball.x += ball.speedX;
    ball.y += ball.speedY;

    if (ball.y - ball.radius < 0 || ball.y + ball.radius > canvas.height) {
        ball.speedY = -ball.speedY;
    }

    // Player movement
    player.y += player.speed;

    
    if(player.y < 0) player.y = 0;
    if(player.y + player.height > canvas.height) player.y = canvas.height - player.height;

    let playerOrRobot = (ball.x < canvas.width / 2) ? player : robot;
    if (collisionDetection(playerOrRobot, ball)) {
        let collidePoint = ball.y - (playerOrRobot.y + playerOrRobot.height / 2);
        collidePoint = collidePoint / (playerOrRobot.height / 2);

        let angleRad = (Math.PI / 4) * collidePoint;
        let direction = (ball.x < canvas.width / 2) ? 1 : -1;
        ball.speedX = direction * ball.speed * Math.cos(angleRad);
        ball.speedY = ball.speed * Math.sin(angleRad);

        ball.speed += 0.2;
    }

    // Score Update
    if (ball.x - ball.radius < 0) {
        robot.score++;
        if(robot.score == 5) {
            robot.winCount++;
            alert("Robot wins!");
            resetGame();
        } else {
            resetBall();
        }
    } else if (ball.x + ball.radius > canvas.width) {
        player.score++;
        if(player.score == 5) {
            player.winCount++;
            alert("Player wins!");
            resetGame();
        } else {
            resetBall();
        }
    }

    // Robot movement
    robot.y += ((ball.y - (robot.y + robot.height / 2))) * 0.1;
    if(robot.y < 0) robot.y = 0;
    if(robot.y + robot.height > canvas.height) robot.y = canvas.height - robot.height;
}

function drawDashedLine(pattern) {
    context.beginPath();
    context.setLineDash(pattern);
    context.moveTo(canvas.width / 2, 0);
    context.lineTo(canvas.width / 2, canvas.height);
    context.strokeStyle = '#FFF';
    context.stroke();
    context.closePath();
    context.setLineDash([]);
}

function draw() {
    drawRect(0, 0, canvas.width, canvas.height, '#000');
    drawRect(player.x, player.y, player.width, player.height, '#FFF');
    drawRect(robot.x, robot.y, robot.width, robot.height, '#FFF');
    drawCircle(ball.x, ball.y, ball.radius, '#FFF');
    drawScore(player.score, canvas.width / 4, canvas.height / 5);
    drawScore(robot.score, 3 * canvas.width / 4, canvas.height / 5);
    drawDashedLine([10, 5]);

    drawScore("Player Wins: " + player.winCount, 10, 25);
    drawScore("Robot Wins: " + robot.winCount, canvas.width - 130, 25);
}

function game() {
    update();
    draw();
}

setInterval(game, 1000/60);

document.addEventListener('keydown', function(event) {
    if (event.key === "ArrowUp") player.speed = -7;
    if (event.key === "ArrowDown") player.speed = 7;
});

document.addEventListener('keyup', function(event) {
    if (event.key === "ArrowUp" || event.key === "ArrowDown") player.speed = 0;
});

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