Question How to make movement of gameobject smoother along the boundary

Code (CSharp):

1. float radius = 400; //radius of *black circle*
2. Vector3 centerPosition = transform.localPosition; //center of *black circle*
3. float distance = Vector3.Distance(newLocation, centerPosition); //distance from ~green object~ to *black circle*
4.  
5. if (distance > radius) //If the distance is less than the radius, it is already within the circle.
6. {
7. Vector3 fromOriginToObject = newLocation - centerPosition; //~GreenPosition~ - *BlackCenter*
8. fromOriginToObject *= radius / distance; //Multiply by radius //Divide by Distance
9. newLocation = centerPosition + fromOriginToObject; //*BlackCenter* + all that Math
10. }

I tried this code block to restrain my game object's movement to a certain radius and it does work but when i move the object along the boundary or circumference, it jitters and isn't as smooth. Can anyone guide me so i can make it move smoother?

 

Code (CSharp):

1. float radius = 400; //radius of *black circle*
2. Vector3 centerPosition = transform.localPosition; //center of *black circle*
3. float distance = Vector3.Distance(newLocation, centerPosition); //distance from ~green object~ to *black circle*
4.    
5. if (distance > radius)
6. {
7.     Vector3 direction=(newLocation-centerPosition).normalized;
8.     newLocation=centerPosition+direction*radius;
9. }

 

thanks for helping but this still makes the object's movement jittery, i need it to move along the boundary like it would along a collider, smoothly. Do you have any advise as to how i can do that or sources that i can learn from?

 

sorry i'm new and a little overwhelmed with everything, i am using physics to move the gameobject and the centre is a child transform that also moves as the player moves.

the script for moving the game object:

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class move2 : MonoBehaviour
6. {
7.     private float speed = 80f;
8.     private Vector2 movement;
9.  
10.     [SerializeField] private Rigidbody2D rb;
11.  
12.     void Update()
13.     {
14.         if (Input.GetMouseButton(0))
15.         {
16.             movement.x = Input.GetAxis("Mouse X");
17.             movement.y = Input.GetAxis("Mouse Y");
18.             rb.MovePosition(rb.position + (speed * Time.deltaTime* movement.normalized));
19.         }
20.     }
21. }

 

thank you! this was very helpful