Pacman Game in JavaScript | Reverse Engineering a Complete Game Engine (HTML5 Canvas)

Описание: At NIIT, we believe real learning happens when you don’t just watch code being written — you understand how complete systems are designed, structured, and engineered.

In this master tutorial, we reverse-engineer a fully working Pacman game built using JavaScript and the HTML5 Canvas.
Instead of starting from blank files, we begin with the final playable game and then systematically break it down like a real engineering team would.

This is not a type-along tutorial.
This is a professional reverse-engineering walkthrough.

You will see how an interactive system is designed from the inside out — including rendering, movement, collisions, enemy AI, and UI state management.

By the end of this video, you will understand:
How the HTML5 Canvas rendering system works
How a professional game loop is structured
How grid-based worlds are implemented
How player movement and animation are handled
How collision detection works logically
How enemy ghosts use AI and pathfinding
How start screens, game over screens, and restarts are managed
How modular JavaScript files scale real applications

Everything in this game — walls, movement, food, score, lives, enemies, and UI — is controlled entirely by JavaScript.
No external libraries. No game engines. No shortcuts.

This tutorial is ideal for:
Beginners who want to truly understand JavaScript
Aspiring game developers
Students learning system design fundamentals
Anyone who wants to think like an engineer, not just write code

At NIIT, our goal is not just to teach syntax.
Our goal is to help you understand how real systems are designed and scaled.

Comment below and tell us what you’d like to reverse-engineer next — Snake, Tetris, Space Invaders, or a platformer.

📌 WHAT YOU’LL LEARN

Reverse-engineering methodology for software systems
HTML5 Canvas fundamentals
Game loop design and execution
Grid-based map systems
Player movement and animation logic
Collision detection techniques
Enemy AI behavior and pathfinding concepts
State-based UI systems
Clean and modular JavaScript architecture

For the full code, click on this link: https://github.com/kushagraxd/PacmanJS


⏱️ TIMESTAMPS / CHAPTERS

00:00 Why We Start with the Final System
01:05 Playing the Complete Pacman Game
02:20 Project Architecture & File Structure
04:10 HTML5 Canvas & Asset Loading
07:05 Game Engine & Game Loop Explained
11:30 Map Grid, Movement & Collisions
16:20 Player Logic: Pacman Engine
21:10 Enemy Logic: Ghost AI & Pathfinding
26:40 UI States: Start, Game Over & Restart
30:20 Final Engineering Takeaways

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