Unity3D Top down (2D) Weighed Camera

CameraTracking.cs

using UnityEngine;
using System.Collections;
using System.Collections.Generic;

public class CameraTracking : MonoBehaviour 
{
    public struct CameraObject
    {
        public GameObject Object;
        public float      Weight;
    }


    public List<CameraObject> Objects;
    public Vector3 targetPosition;
    public  float  targetScale;

    public  float  scaleTime;
    public  float  posTime;
    
    private float   scaleVelocity;
    private Vector3 posVelocity;

    void Start()
    {
        Objects = new List<CameraObject>();
    }

    void FixedUpdate() 
    {
        if (Objects.Count < 1) return;

        Vector3 position = Vector3.zero;
        float totalWeight = 0f;

	    foreach (CameraObject c in Objects)
        {
            position += c.Object.transform.position * c.Weight;
            totalWeight += c.Weight;
        }

        position /= totalWeight;
        targetPosition = position;
        targetPosition.z = -10f;
	}

    void Update()
    {
        camera.orthographicSize = Mathf.SmoothDamp(camera.orthographicSize, targetScale, ref scaleVelocity, scaleTime);
        transform.position      = Vector3.SmoothDamp(transform.position, targetPosition, ref posVelocity, posTime);
    }

    public void Add(GameObject obj, float weigth)
    {
        CameraObject camObj;
        camObj.Object = obj;
        camObj.Weight = weigth;
        Objects.Add(camObj);
    }

    public void Remove(GameObject obj)
    {
        foreach (CameraObject c in Objects)
        {
            if (c.Object == obj)
            {
                Objects.Remove(c);
                return;
            }
        }
    }
}