2D Camera Follow code example

Example 1: camera 2d follow script

using UnityEngine;
using System.Collections;

public class FollowCamera : MonoBehaviour {

	public float interpVelocity;
	public float minDistance;
	public float followDistance;
	public GameObject target;
	public Vector3 offset;
	Vector3 targetPos;
	// Use this for initialization
	void Start () {
		targetPos = transform.position;
	}
	
	// Update is called once per frame
	void FixedUpdate () {
		if (target)
		{
			Vector3 posNoZ = transform.position;
			posNoZ.z = target.transform.position.z;

			Vector3 targetDirection = (target.transform.position - posNoZ);

			interpVelocity = targetDirection.magnitude * 5f;

			targetPos = transform.position + (targetDirection.normalized * interpVelocity * Time.deltaTime); 

			transform.position = Vector3.Lerp( transform.position, targetPos + offset, 0.25f);

		}
	}
}

Example 2: how to make a camera follow an object in unity 2d

public Transform player;  public Vector3 offset;    void Update ()   {      transform.position = new Vector3 (player.position.x + offset.x, player.position.y + offset.y, offset.z); // Camera follows the player with specified offset position  }