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Slow down player's speed in air

I am working on a 3D game currently that is based on Unity's Roll-a-Ball tutorial. The problem that I have encountered, is that whenever my player jumps, its speed increases in the air and I don't want that to happen. I tried coming up with a solution but I just couldn't make it work the way I wanted it to. How would I prevent this from happening?
Here is my code if anyone is interested:
public class PlayerController : MonoBehaviour
{
private Rigidbody rb;
private float movementX;
private float movementY;
public int count;
public GameObject player;
bool isGrounded = true;
public TextMeshProUGUI countText;
public GameObject winTextObject;
public float speed = 0;
public float jumpSpeed = 0;
// Start is called before the first frame update
void Start()
{
rb = GetComponent<Rigidbody>();
count = 0;
SetCountText();
winTextObject.SetActive(false);
}
// Update is called once per frame
void Update()
{
}
void OnMove(InputValue movementValue)
{
Vector2 movementVector = movementValue.Get<Vector2>();
movementX = movementVector.x;
movementY = movementVector.y;
}
void Jump()
{
if (Input.GetKey(KeyCode.Space) && isGrounded)
{
rb.AddForce(Vector2.up * jumpSpeed, ForceMode.Impulse);
}
}
void FixedUpdate()
{
Jump();
Vector3 movement = new Vector3(movementX, 0f, movementY);
rb.AddForce(movement * speed);
}
private void OnTriggerEnter(Collider other)
{
if (other.gameObject.CompareTag("PickUp"))
{
other.gameObject.SetActive(false);
count++;
SetCountText();
}
}
void SetCountText()
{
countText.text = "Score: " + count.ToString();
if (count >= 14)
{
winTextObject.SetActive(true);
}
}
private void OnCollisionEnter(Collision collision)
{
if (collision.gameObject.CompareTag("Ground"))
{
isGrounded = true;
Debug.Log("You are colliding with the ground!");
}
}
private void OnCollisionExit(Collision collision)
{
if (collision.gameObject.CompareTag("Ground"))
{
isGrounded = false;
Debug.Log("You are no longer grounded!");
}
}
}

Use drag to create air resistance:

how can I make the game object disappear?

when I was watching on YouTube, tutorials about endless runner on part 2, the game object wouldn't disappear when it hits the player
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class Obstacle : MonoBehaviour
{
public int damage = 1;
public float speed;
private void Update()
{
transform.Translate(Vector2.left * speed * Time.deltaTime);
}
void onTriggerEnter2D(Collider2D other)
{
if (other.CompareTag("rocket"))
{
//rocket takes damage 1
other.GetComponent<rocket>().health -= damage;
Debug.Log(other.GetComponent<rocket>().health);
Destroy(gameObject);
}
}
}
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;
public class rocket : MonoBehaviour
{
private Vector2 targetPos;
public float Yincrement;
public float speed;
public float maxHeight;
public float minHeight;
public int health = 3;
void Update()
{
if (health <= 0)
{
SceneManager.LoadScene(SceneManager.GetActiveScene().buildIndex);
}
transform.position = Vector2.MoveTowards(transform.position, targetPos, speed * Time.deltaTime);
if (Input.GetKeyDown(KeyCode.UpArrow) && transform.position.y < maxHeight)
{
targetPos = new Vector2(transform.position.x, transform.position.y + Yincrement);
}
else if (Input.GetKeyDown(KeyCode.DownArrow) && transform.position.y > minHeight)
{
targetPos = new Vector2(transform.position.x, transform.position.y - Yincrement);
}
}
}
from this one https://www.youtube.com/watch?v=FVCW5189evI and I'm confused why it didn't work, can someone tell me what is wrong?

if you want to destroy use this, Correct Method to get the game object when collide is: other.gameObject
void onTriggerEnter2D(Collider2D other)
{
if (other.CompareTag("rocket"))
{
//rocket takes damage 1
other.gameObject.GetComponent<rocket>().health -= damage;
Debug.Log(other.gameObject.GetComponent<rocket>().health);
Destory(other.gameObject);
}
}

public class megaStar : MonoBehaviour{
private Rigidbody2D rb;
private Animator _ani;
public bool canAttack = true;
[SerializeField] private Attack _attackObject;
private AudioSource _as;
public checkpoint lastCheckpoint;
public bool isDead = false;
private float _timer = 1.0f;
public float attackTimer = 2.0f;
public GameObject projectile;
public float projectileSpeed = 18.0f;
public Transform projectileAttackPoint;
public float timeDelayForNextShoot = 0.1f;
private float CONST_timeDelayForNextShoot;
// Start is called before the first frame update
void Start(){
CONST_timeDelayForNextShoot = timeDelayForNextShoot;
rb = GetComponent<Rigidbody2D>();
_as = GetComponent<AudioSource>();
_ani = GetComponent<Animator>();
_timer = attackTimer;
}
void Update(){
if (Input.GetKey(KeyCode.W))
{
rb.velocity = new Vector2(0f, 10f);
}
else if (Input.GetKey(KeyCode.S))
{
rb.velocity = new Vector2(0f, -10f);
}
else
{
rb.velocity = new Vector2(0f, 0f);
}
timeDelayForNextShoot -= Time.deltaTime;
if (Input.GetKeyDown(KeyCode.K) && timeDelayForNextShoot <= 0f){
_ani.SetBool("projectileAttack", true);
GameObject go = Instantiate(projectile, projectileAttackPoint.position, projectileAttackPoint.rotation) as GameObject;
go.GetComponent<Rigidbody2D>().velocity = new Vector2(-projectileSpeed, 0.0f);
Destroy(go, 2.0f);
timeDelayForNextShoot = CONST_timeDelayForNextShoot;
canAttack = false;
// new WaitForSeconds(1);
return;
}
}
void FixedUpdate()
{
if (!isDead)
{
Update();
}
else{
rb.velocity = Vector2.zero;
RigidbodyConstraints2D newRB2D = RigidbodyConstraints2D.FreezePositionY;
rb.constraints = newRB2D;
}
}
private void OnCollisionEnter2D(Collision2D collision){
if (collision.gameObject.CompareTag("Enemy"))
{
GetComponent<HitPoints>().TakeDamage(1);
}
}
}

Use SetActive instead of Destroy Function.
void OnTriggerEnter2D(Collider2D other)
{
if (other.CompareTag("rocket"))
{
//rocket takes damage 1
other.gameObject.GetComponent<rocket>().health -= damage;
Debug.Log(other.gameObject.GetComponent<rocket>().health);
gameObject.SetActive(false);// it'll Hide GameObject instead of Destroying
// gameObject.SetActive(true);// to show again
}
}

jittery movement while jumping unity 2d

i am using a 2 scripts, a player movement and a camera follow script. while jumping normally the jump is smooth, it is also smooth while moving my character. what i understand is that the camera follow script is somehow not allowing the jump to be smooth.here is the player movement script.
public class player_movement : MonoBehaviour
{
Rigidbody2D rb;
public float speed;
private float moveInput;
private bool isGrounded;
public Transform feetPos;
public float checkRadius;
public LayerMask whatIsGround;
public float jumpForce;
private float jumpTimeCounter;
public float jumpTime;
private bool isJumping;
private Animator anim;
void Start()
{
anim = GetComponent<Animator>();
rb = GetComponent<Rigidbody2D>();
}
void FixedUpdate()
{
movement();
}
private void movement()
{
moveInput = Input.GetAxisRaw("Horizontal");
rb.velocity = new Vector2(moveInput * speed, rb.velocity.y);
if (isGrounded == false && moveInput == 0)
{
anim.SetBool("is running", false);
}
else if (isGrounded == true && moveInput != 0)
{
anim.SetBool("is running", true);
}
else if(isGrounded == true && moveInput == 0)
{
anim.SetBool("is running", false);
}
else if (isGrounded == false && moveInput != 0)
{
anim.SetBool("is running", false);
}
}
void Update()
{
isGrounded = Physics2D.OverlapCircle(feetPos.position, checkRadius, whatIsGround);
if (moveInput > 0)
{
transform.eulerAngles = new Vector2(0, 0);
}
else if (moveInput < 0)
{
transform.eulerAngles = new Vector2(0, 180);
}
Jump();
}
private void Jump()
{
if (isGrounded == true && Input.GetKeyDown(KeyCode.Space))
{
isJumping = true;
jumpTimeCounter = jumpTime;
rb.velocity = Vector2.up * jumpForce;
}
if (Input.GetKey(KeyCode.Space))
{
if (jumpTimeCounter > 0 && isJumping == true)
{
rb.velocity = Vector2.up * jumpForce;
jumpTimeCounter -= Time.deltaTime;
}
else
{
isJumping = false;
}
}
if (Input.GetKeyUp(KeyCode.Space))
{
isJumping = false;
}
}
private void LateUpdate()
{
//Jump();
}
}
and here is the camera follow script.
public class cammeraFollow : MonoBehaviour
{
public GameObject followObject;
public Vector2 followOffset;
public float speed = 3f;
private Vector2 threshold;
private Rigidbody2D rb;
void Start()
{
threshold = calculateThreshold();
rb = followObject.GetComponent<Rigidbody2D>();
}
// Update is called once per frame
void FixedUpdate()
{
Vector2 follow = followObject.transform.position;
float xDifference = Vector2.Distance(Vector2.right * transform.position.x, Vector2.right * follow.x);
float yDifference = Vector2.Distance(Vector2.up * transform.position.y, Vector2.up * follow.y);
Vector3 newPosition = transform.position;
if(Mathf.Abs(xDifference) >= threshold.x)
{
newPosition.x = follow.x;
}
if (Mathf.Abs(yDifference) >= threshold.y)
{
newPosition.y = follow.y;
}
float moveSpeed = rb.velocity.magnitude > speed ? rb.velocity.magnitude : speed;
transform.position = Vector3.MoveTowards(transform.position, newPosition, moveSpeed * Time.deltaTime);
}
private Vector3 calculateThreshold()
{
Rect aspect = Camera.main.pixelRect;
Vector2 t = new Vector2(Camera.main.orthographicSize * aspect.width / aspect.height, Camera.main.orthographicSize);
t.x -= followOffset.x;
t.y -= followOffset.y;
return t;
}
private void OnDrawGizmos()
{
Gizmos.color = Color.blue;
Vector2 border = calculateThreshold();
Gizmos.DrawWireCube(transform.position, new Vector3(border.x * 2, border.y * 2, 1));
}
}
can anyone help me with this one.

FixedUpdate is not called every frame but in fixed intervals instead. It's more for physics and gameplay code.
Try changing the camera follow script to Update.

I'm trying to make my 2D unity character jump

So as I said, I'm trying to make my character jump in Unity, but nothing is happening when I hit space, and Unity isn't throwing any errors.
public class Player : MonoBehaviour
{
private Rigidbody2D myRigidbody;
[SerializeField]
public float jumpSpeed;
private Animator myAnimator;
[SerializeField]
private float movementSpeed;
private bool facingLeft;
[SerializeField]
private Transform[] groundPoints;
[SerializeField]
private float groundRadius;
[SerializeField]
private LayerMask whatIsGround;
private bool isGrounded;
private bool jump;
[SerializeField]
private float jumpForce;
// Start is called before the first frame update
void Start()
{
facingLeft = true;
myRigidbody = GetComponent<Rigidbody2D>();
myAnimator = GetComponent<Animator>();
}
// Update is called once per frame
void FixedUpdate()
{
float horizontal = Input.GetAxis("Horizontal");
Debug.Log(horizontal);
isGrounded = IsGrounded();
HandleMovement(horizontal);
flip(horizontal);
}
private void HandleMovement(float horizontal)
{
myRigidbody.velocity = new Vector2(horizontal * movementSpeed, myRigidbody.velocity.y);
myAnimator.SetFloat("speed", Mathf.Abs(horizontal));
if (isGrounded && jump)
{
isGrounded = false;
myRigidbody. AddForce(new Vector2(0, jumpForce));
}
}
private void HandleInput()
{
if (Input.GetKeyDown(KeyCode.Space))
{
jump = true;
}
}
private void flip(float horizontal)
{
if (horizontal < 0 && !facingLeft || horizontal > 0 && facingLeft)
{
facingLeft = !facingLeft;
Vector3 theScale = transform.localScale;
theScale.x *= -1;
transform.localScale = theScale;
}
}
private bool IsGrounded()
{
if (myRigidbody.velocity.y <= 0)
{
foreach (Transform point in groundPoints)
{
Collider2D[] colliders = Physics2D.OverlapCircleAll(point.position, groundRadius, whatIsGround);
for (int i = 0; i < colliders.Length; i++)
{
if (colliders[i].gameObject != gameObject)
{
return true;
}
}
}
}
return false;
}
}
I've been following this tutorial for it, and his is jumping, but mine isn't. I think it might have something to do with the way I have the groundpoints set up, but I'm not sure if it's a error in the code or if it's in Unity.

You are not calling HandleInput anywhere.
add to fixed update
void FixedUpdate()
{
float horizontal = Input.GetAxis("Horizontal");
Debug.Log(horizontal);
isGrounded = IsGrounded();
HandleMovement(horizontal);
flip(horizontal);
HandleInput(); // add this so you are sampling input
}

Moving Platforms

We are at very beginning of studying Unity, so we decided to create a mini-platformer. We've already made coins, platforms and character animation, but when we tried to animate a platform, a huge catastrophe appeared. The problem is that character can't stand on the platform. When the platform moves, he falls (it looks like there's no friction, but we tried to set one - it was helpless).
Maybe, we repeat the question, that have been asked before, but hope you'll help us to solve this paradox. Have a nice day ;)
using UnityEngine;
using System.Collections;
using UnityEngine.UI;
public class CharControl : MonoBehaviour
{
public float maxSpeed = 10f;
private bool isFacingRight = true;
private Animator anim;
private bool isGrounded = false;
public Transform groundCheck;
private float groundRadius = 0.2f;
public LayerMask whatIsGround;
public Text scoreText;
public float score = 0;
private void Start()
{
anim = GetComponent<Animator>();
}
private void FixedUpdate()
{
isGrounded = Physics2D.OverlapCircle(groundCheck.position, groundRadius, whatIsGround);
anim.SetBool ("Ground", isGrounded);
anim.SetFloat ("vSpeed", rigidbody2D.velocity.y);
if (isGrounded && rigidbody2D.velocity.y != 0)
return;
float move = Input.GetAxis("Horizontal");
anim.SetFloat("Speed", Mathf.Abs(move));
rigidbody2D.velocity = new Vector2(move * maxSpeed, rigidbody2D.velocity.y);
if(move > 0 && !isFacingRight)
Flip();
else if (move < 0 && isFacingRight)
Flip();
}
private void Update()
{
if (isGrounded && (Input.GetKeyDown (KeyCode.Space) || Input.GetKeyDown(KeyCode.Joystick1Button0)))
{
anim.SetBool("Ground", false);
rigidbody2D.AddForce(new Vector2(0, 600));
}
}
private void Flip()
{
isFacingRight = !isFacingRight;
Vector3 theScale = transform.localScale;
theScale.x *= -1;
transform.localScale = theScale;
}
void OnTriggerEnter2D(Collider2D col){
if(col.gameObject.name == "Skull"){
score++;
Destroy (col.gameObject);
scoreText.text = "" + score;
}
if ((col.gameObject.name == "dead"))
Application.LoadLevel (Application.loadedLevel);
}}

you need to set MovingPlatform is ParentObject of HoldPlayerPlatform.
check below images for that also
Here is Holding Player Script on Moving Platform.
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class HoldPlayer : MonoBehaviour
{
private GameObject target = null;
private Vector3 offset;
void Start()
{
target = null;
}
void OnTriggerStay(Collider col)
{
target = col.gameObject;
offset = target.transform.position - transform.position;
}
void OnTriggerExit(Collider col)
{
target = null;
}
void LateUpdate()
{
if (target != null)
{
target.transform.position = transform.position + offset;
}
}
}
Here is image for setup HoldPlayerPlatform
Here is Setup for MovingPlatform