Повесить на камеру, в паблик поле засунуть шар.
using System;
using UnityEngine;
public class TargetFollow : MonoBehaviour
{
float deltaX;
float deltaY;
float deltaz;
public GameObject targetObject;
void Start()
{
deltaX = transform.position.x - targetObject.transform.position.x;
deltaY = transform.position.y - targetObject.transform.position.y;
deltaZ = transform.position.z - targetObject.transform.position.z;
}
void Update()
{
transform.position = new Vector3(targetObject.transform.position.x+deltaX,targetObject.transform.position.y+deltaY,targetObject.transform.position.z+deltaZ);
}
}