Recap: Light Switch

Part of the Unity Scripting Basics section of Coddy's Unity journey. Lesson 49 of 85.

This recap puts the chapter together: a reference filled in the Inspector, a component fetched once with GetComponent, and a component switched on and off with enabled.

Challenge

Medium

Write the light switch: Space switches the lamp, and the switch shows its state.

Keep the switch's own Renderer in a field, set in Start().
On Space, flip the Light component: lamp.enabled = !lamp.enabled;.
Color the switch Color.green while the lamp is on and Color.red while it is off, from the start and after every press.

Press Play and press Space: the lamp goes off and the switch turns red. Then Check.

Try it yourself

using UnityEngine;

public class LightSwitch : MonoBehaviour
{
    public Light lamp;

    void Start()
    {
    }

    void Update()
    {
    }
}

Test yourself

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, Unity Variables Decimals Need an f Text in the Console Variables That Remember If and Else Compare Numbers Recap: Coin Collector

4Input

Pressed, Held, Released Axes Named Buttons Mouse Buttons Recap: Charge Jump

7Loops and Methods

Repeat with for Loops Inside Loops Write a Method Methods That Answer Arrays Recap: Staircase

10Finding Things

Find by Name Tags Find by Type References Beat Find Unity's Null Recap: Nearest Coin

13Project: Dodge the Blocks

The Runner Blocks from the Sky

2Make It Move

Place the Cube Move Every Frame Turn Every Second Steer with the Keys Recap: Drive the Cube

5Vectors

Adding Vectors Directions Local and World Space Diagonal Speed Distance Between Things Vector3 Is a Struct Recap: Drone Pilot

8GameObjects and Components

References in the Inspector Get a Component Missing Components Add a Component RequireComponent Show and HideRecap: Light Switch

11Prefabs and Spawning

Prefabs and Instantiate Spawn on a Timer Spawn in a Grid Lists of Objects Take Back the Newest Destroy Random Spawns Recap: Fireworks

14Final Challenges

Coin Magnet Crossing the Road Road Traffic Tower Builder Land or Miss

3The Inspector

Inspector Fields SerializeField Floats and Mathf Inspector Attributes Recap: Elevator

6Transforms and Hierarchy

Parents and Children Hoist the Flag Scale Look At Things Move Toward a Point Recap: Orbiting Moon

9Project: Catch the Star

The Catcher A Falling Star

12The Script Lifecycle

Awake and Start Update and LateUpdate OnEnable and OnDisable The Lifecycle Order Recap: Lifecycle Logger

Practice on your own: Unity playground