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Recap: Lifecycle Logger

Part of the Unity Scripting Basics section of Coddy's Unity journey. Lesson 74 of 85.

This recap puts the chapter together: every method Unity calls on a script, from Awake() to OnDestroy(), in the order it calls them.

challenge icon

Challenge

Medium

Show Unity's order in the Console.

  1. Write Awake, OnEnable, Start, OnDisable and OnDestroy, each logging its own name.
  2. Write FixedUpdate, Update and LateUpdate the same way, logging only on the first call, with a bool field each.
  3. In Update(), on Space, call Destroy(gameObject);.

Press Play, then Space: the Console lists the eight names in order. Then Check.

Try it yourself

using UnityEngine;

public class LifecycleLogger : MonoBehaviour
{
    // Log each method's name: Awake, OnEnable, Start, FixedUpdate, Update,
    // LateUpdate, OnDisable, OnDestroy. The three that repeat log only once.
    // Space destroys this object.
}
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This lesson includes a short quiz. Start the lesson to answer it and track your progress.

All lessons in Unity Scripting Basics

1C# Basics in Unity

Hello, UnityVariablesDecimals Need an fText in the ConsoleVariables That RememberIf and ElseCompare NumbersRecap: Coin Collector

4Input

Pressed, Held, ReleasedAxesNamed ButtonsMouse ButtonsRecap: Charge Jump

7Loops and Methods

Repeat with forLoops Inside LoopsWrite a MethodMethods That AnswerArraysRecap: Staircase

10Finding Things

Find by NameTagsFind by TypeReferences Beat FindUnity's NullRecap: Nearest Coin

13Project: Dodge the Blocks

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2Make It Move

Place the CubeMove Every FrameTurn Every SecondSteer with the KeysRecap: Drive the Cube

5Vectors

Adding VectorsDirectionsLocal and World SpaceDiagonal SpeedDistance Between ThingsVector3 Is a StructRecap: Drone Pilot

8GameObjects and Components

References in the InspectorGet a ComponentMissing ComponentsAdd a ComponentRequireComponentShow and HideRecap: Light Switch

11Prefabs and Spawning

Prefabs and InstantiateSpawn on a TimerSpawn in a GridLists of ObjectsTake Back the NewestDestroyRandom SpawnsRecap: Fireworks

14Final Challenges

Coin MagnetCrossing the RoadRoad TrafficTower BuilderLand or Miss

3The Inspector

Inspector FieldsSerializeFieldFloats and MathfInspector AttributesRecap: Elevator

6Transforms and Hierarchy

Parents and ChildrenHoist the FlagScaleLook At ThingsMove Toward a PointRecap: Orbiting Moon

9Project: Catch the Star

The CatcherA Falling StarProject lessonCatch ItProject lessonStar After StarProject lessonFaster and FasterProject lessonThree LivesProject lesson

12The Script Lifecycle

Awake and StartUpdate and LateUpdateOnEnable and OnDisableThe Lifecycle OrderRecap: Lifecycle Logger

Practice on your own: Unity playground