Recap: Achievement Popup

Part of the Game Architecture in Unity section of Coddy's Unity journey. Lesson 14 of 50.

Challenge

Easy

Coins lie around the yard, and the arrows walk the Player (Player.cs, ready). Give the game achievements that pop up on screen. Write three scripts; the scene already links their fields and wires the Achievements' On Unlocked (String) list to AchievementPopup.Show on the HUD.

Collector (on the Player) picks up every object tagged Coin it touches, removing it, and announces the new total with a public C# event OnCoinsChanged that passes an int. It knows nothing of achievements.
Achievements listens to its collector while it is active, and only then. At 1 coin it unlocks First Coin, at 3 Pocket Money and at 6 Coin Hoarder. Each unlock invokes its UnityEvent field onUnlocked, which passes the title (a string).
AchievementPopup.Show(string title) shows panel, with titleText reading Unlocked: First Coin, and hides it showTime (2) seconds later. A Show while the panel is up shows the new title, and the 2 seconds start over.

Press Play, collect all six coins, then Check.

Try it yourself

using UnityEngine;

public class Achievements : MonoBehaviour
{
    public Collector collector;
}

All lessons in Game Architecture in Unity

1Components, Not Hierarchies

Small Components A Base Enemy Script Abstract Components Components Working Together Recap: Modular Turret

4Serialized Data

Serializable Classes Lists in the Inspector Enums in the Inspector Recap: Loot Table

7State Machines

States as Classes A State Machine Transitions Enemy Brains Recap: Door States

10Project: Arena Survivor

2Interfaces in Unity

IDamageable Interfaces and TryGetComponent GetComponents Recap: Interact Key

5ScriptableObjects

Data Assets Weapon Stats Shared Settings Waves as Data Recap: Item Database

8Reusable Code

Extension Methods A Generic Singleton Generic Helpers Recap: FindNearest

11Final Challenges

Tower Defense Lite Crafting Bench Boss Fight

3Events

C# Events in Unity Subscribe in OnEnable UnityEvent Fields Events Drive the UIRecap: Achievement Popup

6Saving with JSON

JsonUtility Save the Game Load and Defaults Recap: Save Slots

9Object Pooling

Why Pool Objects A Pool with a Queue Unity's ObjectPool Recap: Bullet Pool