Book Image

Learning Design Patterns with Unity

By : Harrison Ferrone
Book Image

Learning Design Patterns with Unity

By: Harrison Ferrone

Overview of this book

Struggling to write maintainable and clean code for your Unity games? Look no further! Learning Design Patterns with Unity empowers you to harness the fullest potential of popular design patterns while building exciting Unity projects. Through hands-on game development, you'll master creational patterns like Prototype to efficiently spawn enemies and delve into behavioral patterns like Observer to create reactive game mechanics. As you progress, you'll also identify the negative impacts of bad architectural decisions and understand how to overcome them with simple but effective practices. By the end of this Unity 2023 book, the way you develop Unity games will change. You'll emerge not just as a more skilled Unity developer, but as a well-rounded software engineer equipped with industry-leading design patterns.
Table of Contents (23 chapters)
21
Other Books You May Enjoy
22
Index

Writing an Object Pool class

Imagine you’re building a turret defense game where players fire projectiles from a tower at oncoming enemies, like a 3D version of Asteroids (super fun). The current system creates a new Bullet Prefab every time the player pushes the Spacebar, but the bullets stay alive in the scene (not super fun), as shown in Figure 7.5. You need a system for improving performance when instantiating projectile objects and limiting the number of projectiles that can be created.

If your players exceed the number of projectiles they’re allowed to shoot, they’ll need to wait until a new projectile becomes available instead of creating new projectiles indefinitely.

Figure 7.5: In-game scene showing the player turret creating bullets every time the player fires

Even if you added a timed delay for each bullet to destroy itself, the core problem and cost of instantiating and destroying bullets each time the player fires still exists...