Align Sphere and Blobshadow to Ground?

Unity Engine
1

Hi! I am currently working on a tilt/maze Game. the platform movement code comes from this post:Tilting Platform Question - Questions & Answers - Unity Discussions

and it looks currently like this:

as you can see, i have 2 problems:

  • the blob shadow is not moving with the platform and disappears sometimes under the platform
  • and the Ball/Sphere also does not stick to the Ground and sometimes flies in the air

the blob shadow script looks like this:

using UnityEngine;
using System.Collections;
public class BallFollow : MonoBehaviour {
    
     Transform bar;
    
     void Start() {
         bar = GameObject.Find("Ball").transform;
     }
    
     void Update() {
         transform.position = new Vector3(bar.position.x, transform.position.y, bar.position.z);
     }
}

so it just copies the position of the ball, but somehow has also needs to copy the rotation of the platform?

and then, the ball movement script looks like this:

sing UnityEngine;
using System.Collections;
namespace qtools.qmaze.example
{
     public class QBallController : MonoBehaviour
     {
         public float moveScaleX = 1.0f;
         public float moveScaleY = 1.0f;
         public float moveMaxSpeed = 1.0f;
         public float moveLerp = 0.9f;
        
         private Rigidbody rigidBody;
        
         void Start ()
         {
             rigidBody = GetComponent<Rigidbody>();
         }
        
         void Update ()
         {
             Vector3 velocity = (Vector3.forward   * Input.GetAxis("Horizontal") * moveScaleX);
             velocity+= (Vector3.left * Input.GetAxis("Vertical")   * moveScaleY);
             velocity = Vector3.ClampMagnitude(velocity, moveMaxSpeed);
             velocity *= moveLerp;
             rigidBody.velocity = velocity;   
         }
     }
}

normally it would be enough to give the ball a rigidbody and control the ball by tilting the platform he is lying on.
but, i used this ball script because if i wouldn’t , the ball would move to slowly over the platform. so i am controlling the platform AND the Ball. but i need a way to let the ball stick to the platform. the rigidbody settings of the ball are: mass:1 - drag:0 - angular Drag: 0.7 and the physic settings are untouched.

Thanks for your help upfront!

2

Sorry if I missed something, but couldn’t you use the in-built lighting system - a directional light for example - to create the shadow on the ball?

3

the scene will be a little bit more complex* in the end, so the performance would be pretty bad for mobile if i would use realtime shadows

*like this:

4

Cast a ray from the ball down to the platform, and use the hit’s distance to position the blob shadow on the Y axis.

Also, might I recommend renaming the “bar” variable to “ball”.