Creating a Pacman Game with Leaderboard and Social Sharing.

Founder & CEO, EM @QUE.COM

1 year ago

Let’s learn together by KING.NET. Creating a full-featured Pacman game with leaderboards and social sharing capabilities in JavaScript is a complex task, involving multiple components such as game logic, graphics rendering, user interface design, and API integration for social sharing. Below is a high-level outline with some code snippets to get you started on developing such a game.

1. Set Up the Game Environment

First, you’ll need basic HTML and CSS for your game canvas and UI elements:

**HTML:**

“`html

<!DOCTYPE html>

<head>

<title>Pacman Game</title>

</head>

<body>

<h3>Leaderboard</h3>

</div>

<button id=”shareButton”>Share Your Score</button>

</body>

</html>

“`

**CSS (styles.css):**

“`css

body {

display: flex;

flex-direction: column;

align-items: center;

font-family: Arial, sans-serif;

}

#gameCanvas {

border: 2px solid black;

margin-bottom: 20px;

}

#leaderboard {

margin-bottom: 20px;

}

#scoresList {

list-style: none;

padding: 0;

}

button {

padding: 10px 20px;

font-size: 16px;

cursor: pointer;

}

“`

2. Implement Game Logic in JavaScript

**JavaScript (game.js):**

This part includes setting up the game loop, rendering the game, and basic movement logic for Pacman.

“`javascript

const canvas = document.getElementById(‘gameCanvas’);

const ctx = canvas.getContext(‘2d’);

let pacman = {

x: 50,

y: 50,

speed: 2,

direction: ‘right’, // Example direction

radius: 20

};

function drawPacman() {

ctx.fillStyle = ‘yellow’;

ctx.beginPath();

ctx.arc(pacman.x, pacman.y, pacman.radius, 0.2 * Math.PI, 1.8 * Math.PI); // Simple pacman shape

ctx.lineTo(pacman.x, pacman.y);

ctx.fill();

}

function gameLoop() {

ctx.clearRect(0, 0, canvas.width, canvas.height);

movePacman();

drawPacman();

requestAnimationFrame(gameLoop);

}

function movePacman() {

if (pacman.direction === ‘right’) pacman.x += pacman.speed;

// Add logic for other directions and boundary checks

}

gameLoop();

// Keyboard controls

document.addEventListener(‘keydown’, (event) => {

if (event.key === ‘ArrowRight’) pacman.direction = ‘right’;

if (event.key === ‘ArrowLeft’) pacman.direction = ‘left’;

if (event.key === ‘ArrowUp’) pacman.direction = ‘up’;

if (event.key === ‘ArrowDown’) pacman.direction = ‘down’;

});

“`

3. Implement Leaderboard

You can use local storage to store the leaderboard:

“`javascript

const scoresList = document.getElementById(‘scoresList’);

function updateLeaderboard(score) {

let scores = JSON.parse(localStorage.getItem(‘scores’)) || [];

scores.push(score);

scores.sort((a, b) => b – a);

scores = scores.slice(0, 5); // Keep top 5 scores

localStorage.setItem(‘scores’, JSON.stringify(scores));

displayScores();

}

function displayScores() {

const scores = JSON.parse(localStorage.getItem(‘scores’)) || [];

scoresList.innerHTML = scores.map(score => `<li>${score}</li>`).join(”);

}

// Call this function whenever you want to update the leaderboard

// updateLeaderboard(yourScore);

“`

4. Add Social Sharing

For social sharing, you’ll need integration with platforms. This typically involves sharing URLs or posting using their SDKs/APIs.

“`javascript

document.getElementById(‘shareButton’).addEventListener(‘click’, () => {

const url = ‘http://yourgameurl.com’; // Replace with actual URL

const shareText = `I scored a new high score playing Pacman!`;

// Example Twitter share URL

const twitterUrl = `https://twitter.com/intent/tweet?text=${encodeURIComponent(shareText)}&url=${encodeURIComponent(url)}`;

window.open(twitterUrl, ‘_blank’);

});

“`

Adding sharing for Facebook or Instagram would require additional integration through their respective APIs.

Notes:

1. Graphics and Movement: This example uses basic shapes and logic. For a full Pacman game, you’d need to design the full map and handle more complex interactions such as ghosts, power-ups, and collision detection.

2. Social API Integration: For full integration with platforms like Facebook or Instagram, you’ll often need to create apps via their developer platforms and get specific API keys/permissions.

3. Security and Best Practices: In a production environment, ensure to handle user data securely, comply with platform terms of service, and consider using a backend server for high-score management.

This is a basic foundation to get you started on a Pacman game with leaderboards and social sharing. You’d need to expand upon this with more detailed game mechanics and UI functionality for a complete game.

Alternative #2.

Creating a Complete Pacman Game in JavaScript

1. Game Setup

HTML Structure: Set up the basic HTML structure for the game canvas, score display, and game over message.
JavaScript Variables: Initialize variables for the game canvas, context, game over flag, score, game speed, and other necessary data.
Game Board: Create a 2D array representing the Pacman maze.

2. Game Objects

Pacman: Define a Pacman object with properties for position, direction, and speed.
Ghosts: Create multiple ghost objects with properties for position, direction, speed, and color.

3. Game Loop

Draw Function: Implement a draw function to clear the canvas, draw the game board, Pacman, and ghosts.
Update Function: Create an update function to handle Pacman and ghost movement, collision detection, score updates, and power-up effects.
Game Loop: Use setInterval to continuously call the draw and update functions.

4. Input Handling

Event Listeners: Add event listeners for keyboard input to control Pacman’s movement.

5. Game Over and Restart

Game Over Condition: Check for game over conditions (e.g., Pacman colliding with a ghost while not invincible).
Restart: Implement a restart function to reset the game state and start a new game.

6. Power-Ups

Invincibility: Implement a power-up that makes Pacman invincible for a limited time.
Extra Points: Create power-ups that award extra points.

7. Sound Effects

Audio Elements: Load audio files for Pacman eating pellets, ghosts being eaten, game over, and power-up activation.
Play Sounds: Play appropriate sounds during gameplay.

Code Example (Partial)

JavaScript

// HTML structure
<canvas id="gameCanvas"></canvas>
<div id="score">Score: 0</div>
<div id="gameOverMessage" style="display: none;">Game Over</div>

// JavaScript
const canvas = document.getElementById('gameCanvas');
const ctx = canvas.getContext('2d');

// Game objects and variables
let pacman = { x: 100, y: 100, direction: 'right' };
let ghosts = [];
let score = 0;
let gameOver = false;

// Game loop
function gameLoop() {
  // Clear canvas, draw game objects, update game state
  // ...

  if (gameOver) {
    // Show game over message
    document.getElementById('gameOverMessage').style.display = 'block';
  }
}

// Input handling
document.addEventListener('keydown', (event) => {
  // Update Pacman's direction based on key pressed
});

// Power-up logic
function checkPowerUpCollision() {
  // Check if Pacman has collided with a power-up
  // ...
}

// Sound effects
const pacmanEatSound = new Audio('pacman_eat.wav');
pacmanEatSound.play();

Additional Considerations

Collision Detection: Implement accurate collision detection algorithms for Pacman and ghosts.
Level Design: Create multiple levels with increasing difficulty.
AI: Implement basic AI for the ghosts to make the game more challenging.
Multiplayer: Consider adding a multiplayer mode for competitive gameplay.
Customization: Allow players to customize the game’s appearance.
Responsive Design: Ensure the game works well on different screen sizes.

By following these steps and incorporating additional features, you can create a fun and engaging Pacman game.

Example of JavaScript programming code.

Creating a Complete Pacman Game in JavaScript

1. Game Setup

2. Game Objects

3. Game Loop

4. Input Handling

5. Game Over and Restart

6. Power-Ups

7. Sound Effects

Code Example (Partial)

Additional Considerations

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