Nrthugu

I'm creating a 2D mario like platformer in Unity and I have ran in to a problem with player movement script. The thing is that the character is never trully on the ground, in the inspector it's y velocity allways changes from 0 to 0.3 and then back to 0 and so for an endless loop.

It might have something to do with this line

position.y = hitRay.collider.bounds.center.y + hitRay.collider.bounds.size.y / 2 + 0.0801f;

if I put it at 0.08f, (my players y size is 0.16f) my player just falls through the ground.

If anybody notices the mistake and is kind enough to help, I would be very grateful.

void Fall()

{

    velocity.y = 0;



    playerState = PlayerState.jumping;



    grounded = false;



    bounce = false;

}



void UpdatePlayerPosition()

{

    Vector3 position = transform.localPosition;

    Vector3 scale = transform.localScale;



    if (walk)

    {

        if (walk_left)

        {

            position.x -= velocity.x * Time.deltaTime;



            scale.x = -1;

        }



        if (walk_right)

        {

            position.x += velocity.x * Time.deltaTime;



            scale.x = 1;

        }



        position = CheckWallRays(position, scale.x);

    }



    if (jump && playerState != PlayerState.jumping)

    {

        playerState = PlayerState.jumping;



        velocity = new Vector2(velocity.x, jumpVelocity);

    }



    if (playerState == PlayerState.jumping)

    {

        position.y += velocity.y * Time.deltaTime;

        velocity.y -= gravity * Time.deltaTime;

    }



    if (bounce && playerState != PlayerState.bouncing)

    {

        playerState = PlayerState.bouncing;



        velocity = new Vector2(velocity.x, bounceVelocity);

    }



    if (playerState == PlayerState.bouncing)

    {

        position.y += velocity.y * Time.deltaTime;



        velocity.y -= gravity * Time.deltaTime;

    }



    if (velocity.y <= 0)

    {

        position = CheckGroundRays(position);

    }



    if (velocity.y >= 0)

    {

        position = CheckCeilingRays(position);

    }



    transform.localPosition = position;

    transform.localScale = scale;

}



 Vector3 CheckGroundRays(Vector3 position)

{

    Vector2 left = new Vector2(position.x - 0.065f, position.y - 0.08f);

    Vector2 middle = new Vector2(position.x, position.y - 0.08f);

    Vector2 right = new Vector2(position.x + 0.065f, position.y - 0.08f);



    Debug.DrawRay(left, Vector2.down, Color.green);

    Debug.DrawRay(middle, Vector2.down);

    Debug.DrawRay(right, Vector2.down);



    RaycastHit2D groundLeft = Physics2D.Raycast(left, Vector2.down, velocity.y * Time.deltaTime, floorMask);

    RaycastHit2D groundMiddle = Physics2D.Raycast(middle, Vector2.down, velocity.y * Time.deltaTime, floorMask);

    RaycastHit2D groundRight = Physics2D.Raycast(right, Vector2.down, velocity.y * Time.deltaTime, floorMask);



    if (groundLeft.collider != null || groundMiddle.collider != null || groundRight.collider != null)

    {

        RaycastHit2D hitRay = groundLeft;



        if (groundLeft)

        {

            hitRay = groundLeft;

        }

        else if (groundMiddle)

        {

            hitRay = groundMiddle;

        }

        else if (groundRight)

        {

            hitRay = groundRight;

        }



        if (hitRay.collider.tag == "Enemy")

        {

            hitRay.collider.GetComponent<EnemyAI>().Crush();



            this.GetComponent<PlayerScore>().score += 100;



            bounce = true;

        }



        playerState = PlayerState.idle;



        grounded = true;



        velocity.y = 0;



        position.y = hitRay.collider.bounds.center.y + hitRay.collider.bounds.size.y / 2 + 0.0801f;

    }

    else if (playerState != PlayerState.jumping)

    {

        Fall();

    }



    return position;

}