Webleb - fragmentos de código - Juego de Ping-Pong

HTML

CSS

JS

const canvas = document.getElementById("game");
const context = canvas.getContext("2d");
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;

const paddleWidth = 18,
    paddleHeight = 120,
    paddleSpeed = 8,
    ballRadius = 12,
    initialBallSpeed = 16,
    maxBallSpeed = 50,
    netWidth = 5,
    netColor = "Gray";

// Draw net on canvas
function drawNet() {
    for (let i = 0; i <= canvas.height; i += 15) {
        drawRect(canvas.width / 2 - netWidth / 2, i, netWidth, 10, netColor);
    }
}

// Draw rectangle on canvas
function drawRect(x, y, width, height, color) {
    context.fillStyle = color;
    context.fillRect(x, y, width, height);
}

// Draw a circle on canvas
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();
}

// Draw text on canvas
function drawText(text, x, y, color, fontSize = 60, fontWeight = 'bold', font = "Courier New") {
    context.fillStyle = color;
    context.font = `${fontWeight} ${fontSize}px ${font}`;
    context.textAlign = "center";
    context.fillText(text, x, y);
}

// Create a paddle object
function createPaddle(x, y, width, height, color) {
    return { x, y, width, height, color, score: 0 };
}

// Create a ball object
function createBall(x, y, radius, velocityX, velocityY, color) {
    return { x, y, radius, velocityX, velocityY, color, speed: initialBallSpeed };
}

// Define user and computer paddle objects
const user = createPaddle(0, canvas.height / 2 - paddleHeight / 2, paddleWidth, paddleHeight, "WHITE");

const com = createPaddle(canvas.width - paddleWidth, canvas.height / 2 - paddleHeight / 2, paddleWidth, paddleHeight, "WHITE");

// Define ball object
const ball = createBall(canvas.width / 2, canvas.height / 2, ballRadius, initialBallSpeed, initialBallSpeed, "WHITE");

// Update user paddle position based on mouse movement
canvas.addEventListener('mousemove', movePaddle);

function movePaddle(event) {
    const rect = canvas.getBoundingClientRect();
    user.y = event.clientY - rect.top - user.height / 2;
}

// Check for collision between ball and paddle
function collision(b, p) {
    return (
        b.x + b.radius > p.x && b.x - b.radius < p.x + p.width && b.y + b.radius > p.y && b.y - b.radius < p.y + p.height
    );
}

// Reset ball position and velocity
function resetBall() {
    ball.x = canvas.width / 2;
    ball.y = Math.random() * (canvas.height - ball.radius * 2) + ball.radius;
    ball.velocityX = -ball.velocityX;
    ball.speed = initialBallSpeed;
}

// Update game logic
function update() {
    // Check for score and reset ball if necessary
    if (ball.x - ball.radius < 0) {
        com.score++;
        resetBall();
    } else if (ball.x + ball.radius > canvas.width) {
        user.score++;
        resetBall();
    }

// Update ball position
    ball.x += ball.velocityX;
    ball.y += ball.velocityY;

// Update computer paddle position based on ball position
    com.y += (ball.y - (com.y + com.height / 2)) * 0.1;

// Top and bottom walls
    if (ball.y - ball.radius < 0 || ball.y + ball.radius > canvas.height) {
        ball.velocityY = -ball.velocityY;
    }

// Determine which paddle is begin hit by the ball and handle collision
    let player = ball.x + ball.radius < canvas.width / 2 ? user : com;
    if (collision(ball, player)) {
        const collidePoint = ball.y - (player.y + player.height / 2);
        const collisionAngle = (Math.PI / 4) * (collidePoint / (player.height / 2));
        const direction = ball.x + ball.radius < canvas.width / 2 ? 1 : -1;
        ball.velocityX = direction * ball.speed * Math.cos(collisionAngle);
        ball.velocityY = ball.speed * Math.sin(collisionAngle);

// Increase ball speed and limit to max speed
        ball.speed += 0.2;
        if (ball.speed > maxBallSpeed) {
            ball.speed = maxBallSpeed;
        }
    }
}

// Render game on canvas
function render() {
    // Clear canvas with black screen
    drawRect(0, 0, canvas.width, canvas.height, "BLACK");
    drawNet();

// Draw scores
    drawText(user.score, canvas.width / 4, canvas.height / 2, "GRAY", 120, 'bold');
    drawText(com.score, (3 * canvas.width) / 4, canvas.height / 2, "GRAY", 120, 'bold');

// Draw paddles
    drawRect(user.x, user.y, user.width, user.height, user.color);
    drawRect(com.x, com.y, com.width, com.height, com.color);

// Draw ball
    drawCircle(ball.x, ball.y, ball.radius, ball.color);

}

// Run game loop
function gameLoop() {
    update();
    render();
}

// Set gameLoop to run at 60 frame per second
const framePerSec = 60;
setInterval(gameLoop, 1000 / framePerSec);

Juego de Ping-Pong

Recomendado

Un código de slowlogic992

Estructura HTML de la animación de carga CSS

Barra de navegación simple

HTML

CSS

JS

Recomendado

Un código de slowlogic992

Estructura HTML de la animación de carga CSS

Barra de navegación simple

HTMLCopy

CSSCopy

JSCopy

HTML

CSS

JS