Build a Space Game Part 1: Introduction

Just like NASA’s mission control coordinates multiple systems during a space launch, we’re going to build a space game that demonstrates how different parts of a program can work together seamlessly. While creating something you can actually play, you’ll learn essential programming concepts that apply to any software project. We’ll explore two fundamental approaches to organizing code: inheritance and composition. These aren’t just academic concepts – they’re the same patterns that power everything from video games to banking systems. We’ll also implement a communication system called pub/sub that works like the communication networks used in spacecraft, allowing different components to share information without creating dependencies. By the end of this series, you’ll understand how to build applications that can scale and evolve – whether you’re developing games, web applications, or any other software system.

Pre-Lecture Quiz

Pre-lecture quiz

Inheritance and Composition in Game Development

As projects grow in complexity, code organization becomes critical. What begins as a simple script can become difficult to maintain without proper structure – much like how the Apollo missions required careful coordination between thousands of components. We’ll explore two fundamental approaches for organizing code: inheritance and composition. Each has distinct advantages, and understanding both helps you choose the right approach for different situations. We’ll demonstrate these concepts through our space game, where heroes, enemies, power-ups, and other objects must interact efficiently. ✅ One of the most famous programming books ever written has to do with design patterns. In any game, you have game objects – the interactive elements that populate your game world. Heroes, enemies, power-ups, and visual effects are all game objects. Each exists at specific screen coordinates using x and y values, similar to plotting points on a coordinate plane. Despite their visual differences, these objects often share fundamental behaviors: - They exist somewhere – Every object has x and y coordinates so the game knows where to draw it - Many can move around – Heroes run, enemies chase, bullets fly across the screen - They have a lifespan – Some stick around forever, others (like explosions) appear briefly and vanish - They react to stuff – When things collide, power-ups get collected, health bars update ✅ Think about a game like Pac-Man. Can you identify the four object types listed above in this game?

Expressing Behavior Through Code

Code Organization: Class inheritance

Composition patterns

Factory functions

Behavior mixing section Communication Systems (25 minutes) Event Architecture: Pub/Sub implementation

Message design

Event emitters

Loose coupling section Game Object Design (30 minutes) Entity Systems: Property management

Behavior composition

State handling

Lifecycle management section Architecture Patterns (35 minutes) System Design: Component systems

Observer pattern

Command pattern

State machines section Advanced Concepts (45 minutes) Scalable Architecture: Performance optimization

Memory management

Modular design

Testing strategies section Game Engine Concepts (1 week) Professional Development: Scene graphs

Asset management

Rendering pipelines

Physics integration section Framework Mastery (2 weeks) Modern Game Development: React game patterns

Canvas optimization

WebGL basics

PWA games section Industry Practices (1 month) Professional Skills: Team collaboration

Code reviews

Game design patterns

Performance profiling

journey
    title Your Game Development Journey
    section Foundation
      Learn game architecture: 3: Student
      Understand inheritance: 4: Student
      Explore composition: 4: Student
    section Communication
      Build pub/sub system: 4: Student
      Design event flow: 5: Student
      Connect components: 5: Student
    section Application
      Create game objects: 5: Student
      Implement patterns: 5: Student
      Plan game structure: 5: Student