My player keeps bouncing on falling objects, even though both the objects and my player have bounciness set to 0

Getting Started
,
1

I am working on a mini 2D game (Unity), in which there are objects that fall from the sky, at some point I need my player to stand on them as they keep falling to the ground at a constant speed, and thus they can’t be a RigidBody.

Reference: watch the video included at the end; I was spamming jump throughout the entire video

The issue is that my player keeps bouncing on them as they fall, never being grounded.
Note: both the player and the object have a physics material with 0 bounciness, and note that I still want my player to have gravity and everything a RigidBody has.
I couldn’t find a solution on Unity Discussions, I’m hoping that maybe I could somehow find a solution here.
Thank you in advance!

Here are the scripts I attached to the player and to the object:

To my player:

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


public class PlayerScript : MonoBehaviour
{
    [SerializeField] Rigidbody2D rb;
    [SerializeField] float maxVel = 15;
    [SerializeField] float walk;
    [SerializeField] float jump;
    bool isGrounded = false;
    bool isAlive = true;
    float horInput = 0;

    public LogicScript logic;





    // Start is called before the first frame update
    void Start()
    {
        if (rb == null) {
            rb = gameObject.GetComponent<Rigidbody2D>();
        }
        logic = GameObject.FindGameObjectWithTag("Logic").GetComponent<LogicScript>();

    }




    // Update is called once per frame
    void Update()
    {
        
        if (isAlive) { move(); }
      
    }

    
    void move()
    {
        
        horInput = Input.GetAxisRaw("Horizontal");
        if (horInput != 0)
        {
            LimitedAddForce(horInput *= walk);
            
        }

        if (isGrounded)
        {
            if (Input.GetKeyDown(KeyCode.Space) )
                rb.AddForce(new Vector2(0f, jump), ForceMode2D.Force);
        }
    }


    void LimitedAddForce( float force) 
    {
        float currentVel = rb.velocity.x;        
            if (currentVel + force <= maxVel && currentVel + force >= -maxVel) rb.AddForce(new Vector2(force, 0f), ForceMode2D.Force);
        
    }

    void OnCollisionEnter2D(Collision2D other)
    {
        if (other.gameObject.tag == "FloatingGround")
        {
            isGrounded = true;
        }
        else if(other.gameObject.tag == "DeathGround")
        {
            isAlive = false;
            logic.gameOver();
            Debug.Log("GAMEEEEEE OVERRRRRR!!!");
        }

     
    }

    void OnCollisionExit2D(Collision2D other)
    {
        if (other.gameObject.tag == "FloatingGround")
        {
            isGrounded = false;
        }
    }




}

To my Object:

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

public class GroundMoveBehaviour : MonoBehaviour
{
    [SerializeField] public float dropVel;
    [SerializeField] public float deadZone;
   

    // Update is called once per frame
    void Update()
    {
        transform.position -= new Vector3(0f, dropVel * Time.deltaTime, 0f);
        if(transform.position.y < deadZone)
        {
            Destroy(gameObject);
        }
    }



}

Here is a video explaining my problem, if you zoom in a little, you can see the player bouncing small bounces on the floating grounds.
NOTE: I was spamming jump throughout the entire video.
Unity Player Bouncing video

2

Add a rigidbody component to the platform and set it to be kinematic. You can then move a platform like this:

	void FixedUpdate()
	{
		rb.MovePosition(rb.position+Vector2.down*dropVel*Time.deltaTime);
	}

Another approach is instead of moving all the platforms downwards you could make all the platforms static and slowly move the camera upwards.

1 Like
3

Thank you so much! it worked!
Do you know why my approach wasn’t working? I’m trying to figure out why it doesn’t work like intended…

4

Moving an object by setting its transform isn’t physics friendly. When you moved the platform downwards by setting the transform’s position the physics engine didn’t immediately know.

1 Like