Parenting player to moving platform works for one but not two moving platforms

Unity Engine
1

I have a 2d animated character. It has a rigidbody some colliders and a movement script.
I have a vertical rising platform and a horizontal moving platform. The parenting method for staying on the platform works fine. But only for one platform. If both platforms are enabled in the scene only one will parent. The horizontal platform parents, but the vertical one will not. If I disable the horizontal platform, then the vertical one works fine. The platforms have a box collider 2D for the collision detection and a empty GO with a collider for the trigger. They are not rigidbodies. I am using iTween for movement. The stay on platform scripts are on the empty GO’s attached to the platforms.

public class vPlatformMove : MonoBehaviour
{

    public GameObject gameObject;
   
    void Start()
    {
        iTween.MoveBy(gameObject, iTween.Hash("y", 8, "speed", 2, "easeType", "easeInOutExpo", "loopType", "pingPong", "delay", .1));
    }


}

public class vStayOnPlatform : MonoBehaviour
{
    public bool onMovingPlatform = false;
    Transform player;
    Transform vPlatform;

   
   
    void Awake()
    {
        player = GameObject.FindWithTag("Player").transform;
        vPlatform = GameObject.FindWithTag ("vPlatform").transform;
    }
   
   
    void Update ()
    {
        if(onMovingPlatform)
        {

            player.SetParent (vPlatform);


        }
       
        if(!onMovingPlatform)
        {
            player.SetParent (null);

        }
    }
   
    void OnTriggerEnter2D(Collider2D other)
    {
        onMovingPlatform = true;
    }
   
    void OnTriggerExit2D(Collider2D other)
    {
        onMovingPlatform = false;
    }

}

public class hPlatformMove : MonoBehaviour
{
    public GameObject gameObject;

    void Start()
    {
        iTween.MoveBy(gameObject, iTween.Hash("x", 5, "easeType", "easeInOutExpo", "loopType", "pingPong", "delay", .1));
    }

}

public class hStayOnPlatform : MonoBehaviour
{
    public bool onMovingPlatform = false;
    Transform player;
    Transform hPlatform;
   
   
    void Awake()
    {
        player = GameObject.FindWithTag("Player").transform;
        hPlatform = GameObject.FindWithTag ("hPlatform").transform;
    }
   
   
    void Update ()
    {
        if(onMovingPlatform)
        {
            //transform.SetParent (player);
            player.SetParent (hPlatform);
        }
       
        if(!onMovingPlatform)
        {
            player.SetParent (null);
        }
    }
   
    void OnTriggerEnter2D(Collider2D other)
    {
        onMovingPlatform = true;
    }
   
    void OnTriggerExit2D(Collider2D other)
    {
        onMovingPlatform = false;
    }

}

public class PlayerMovement : MonoBehaviour
{
    // Movement
    public float maxSpeed = 5f;
    bool facingRight = true;

    //Character Animator
    Animator anim;

    //Jumping
    bool isGrounded = false;
    public Transform groundCheck;
    float groundRadius = 0.1f;
    public LayerMask whatIsGround;
    public float jumpForce = 700f;

    //Moving platform
    //public Transform movingPlatformCheck;
    //public bool onMovingPlatform = false;
    //public LayerMask whatIsMovingPlatform;
    //float movingPlatformCheckRadius = 0.1f;
    //Transform platform;



    void Awake ()
    {
        anim = GetComponent<Animator>();
        //platform = GameObject.FindWithTag ("Platform").transform;
    }
   

    void FixedUpdate ()
    {
        Movement ();

    }

    void Update()
    {
        Jump ();
        //StickToPlatform();
    }

    void Flip()
    {
        facingRight = !facingRight;
        Vector3 theScale = transform.localScale;
        theScale.x *= -1;
        transform.localScale = theScale;

    }

    void Movement()
    {  
        //Get the rigidbody component from the player gameobject.
        Rigidbody2D myRigidBody2D = GetComponent<Rigidbody2D>();

        //Sets the bool "isGrounded" to true when a collision is detected using "OverlapCircle".
        isGrounded = Physics2D.OverlapCircle (groundCheck.position, groundRadius, whatIsGround);
        anim.SetBool ("Ground", isGrounded);


        anim.SetFloat ("vSpeed", myRigidBody2D.velocity.y);

        //If player is "in the air", does not allow movement.
        if(!isGrounded) return;

        //Movement.
        //float move = Input.GetAxis ("Horizontal");
        float move = Input.GetAxis ("LeftAnalog");
        anim.SetFloat ("Speed", Mathf.Abs(move));
        myRigidBody2D.velocity = new Vector2(move * maxSpeed, myRigidBody2D.velocity.y);

        //Flips the sprite to face the correct way.
        if(move > 0 && !facingRight)
            Flip ();
        else if(move < 0 && facingRight)   
            Flip ();



    }


    void Jump()
    {
        Rigidbody2D myRigidBody2D = GetComponent<Rigidbody2D>();

        //if(isGrounded && Input.GetKeyDown (KeyCode.Space))
        if(isGrounded && Input.GetButtonDown("A"))
        {
            anim.SetBool ("Ground", false);
            myRigidBody2D.AddForce (new Vector2(0, jumpForce));
        }
    }



}

Thanks for looking.

2 
vPlatform =GameObject.FindWithTag("vPlatform").transform;

this will only find the first platform in the scene with that tag. You need to change the OnTriggerEnter2D functions to pick up the platform the player has collided with and parent to that specific platform…

once you’ve done that you’ll probably find hStayOnPlatform and vStayOnPlatform are identical and can just be a single (not based on direction) script

3

There is only one “vPlatform” in the scene.
The other one is “hPlatform”.
There are two platforms in the scene. One is “vPlatform” and “hPlatform”. They are tagged with their names. I have completely separated them. They don’t share scripts or tags. Yet they dont work at the same time.

4

I solved my issue.
I do agree with your method of checking for which platform, and I will do that. I wanted to keep it as simple as possible to test it out. The problem was setting the parent in the update. I moved the “player.SetParent (hPlatform);” and
“player.SetParent (null);” to happen in the OnTrigger event.