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

Updating a MonoBehavior into a persistent singleton

Imagine you are building a platforming game where the player collects items through multiple levels. Your team lead asks you to create a manager script to track the player’s score, handle scene transitions, and ensure there’s always one unique instance in a scene. Our first task is to ensure that the game manager class in the starter project only ever has one active instance.

Open Manager.cs and update the code to match the following code, which sets the singleton instance or destroys the GameObject that the script is attached to if an instance already exists:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.SceneManagement;
public class Manager : MonoBehaviour
{
    // 1
    public static Manager Instance;    
    public int score = 0;
    public int startingLevel = 1;
    // 2
    void Awake()    
    {
        // 3
        if(Instance...