samsheffield

Here is a bonus Unity example for 2D Game Design F21. Let me know what else you need!
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(DE) ACTIVATING GAMEOBJECTS
Activate another GameObject on Start example: ShowOnStart.cs
Deactivate this GameObject on action (press space) example: HideOnAction.cs
Example Unity Project: https://drive.google.com/file/d/1qhtZZOpn83fH7DKXjtUJ8WmbGrK62By2/view?usp=sharing

Important: 
1. ShowOnStart requires the GameObject you want to activate deactivated in your scene (uncheck the top-left box in its Inspector)

samsheffield

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement; // Add Scene Management

public class SwitchScene : MonoBehaviour
{

    // Important: Don't forget to add the next scene to your project's Build Settings

samsheffield

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class JustOnce : MonoBehaviour
{

    // Has the thing already been done?
    private bool alreadyDone = false;

samsheffield

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class KeyControl : MonoBehaviour
{
    // Variables for keycodes that can be set in the Inspector
    public KeyCode up = KeyCode.W;
    public KeyCode down = KeyCode.S;
    public KeyCode left = KeyCode.A;

samsheffield

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Spin : MonoBehaviour
{
    // Set the velocity of rotation (positive numbers go counterclockwise, negative numbers go clockwise)
    public float spinVelocity = 10f;
    private Rigidbody2D rb2d;

samsheffield

Here is a bonus Unity example for 2D Game Design F21. Let me know what else you need!
======================================================================================

A BASIC APPROACH TO FLAPPING
Full example: FlappyControl.cs

Important: 
1. Flapping isn't exactly jumping. Our expectations of jumping in videogames tend to be much higher. This is dumb, bouncy, and messy (but fun!)
2. Your GameObject needs a Rigidbody2D component with Gravity Scale set to something other than 0.
3. The script interact's a lot with the Rigidbody2D properties Gravity Scale and Linear Drag. Experiment!

samsheffield

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class DestroyingThings : MonoBehaviour
{
    // This example assumes you will use collision to destroy something. You can use the code inside of OnTriggerEnter2D as well
    private void OnCollisionEnter2D(Collision2D collision)
    {
        // If the other thing has a specific tag. It's a good idea to limit the detection to specific things

samsheffield

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

// Add SceneManagement to switch scenes
using UnityEngine.SceneManagement;

public class TriggerScene : MonoBehaviour
{
    // Create a string variable that you can set in the Inspector to specify the name of your new scene. You don't need quotes there.

samsheffield

// Code based on CameraFacingBillboard by Nei Carter: http://wiki.unity3d.com/index.php?title=CameraFacingBillboard

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Billboard : MonoBehaviour
{
    public Transform cameraTransform;
    

samsheffield

// Simple quit and escape functionality

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

// First, add this...
using UnityEngine.SceneManagement;

public class QuitAndReset : MonoBehaviour