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Assets/Standard Assets/2D/Scripts/Camera2DFollow.cs

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+using System;
+using UnityEngine;
+
+namespace UnityStandardAssets._2D
+{
+    public class Camera2DFollow : MonoBehaviour
+    {
+        public Transform target;
+        public float damping = 1;
+        public float lookAheadFactor = 3;
+        public float lookAheadReturnSpeed = 0.5f;
+        public float lookAheadMoveThreshold = 0.1f;
+
+        private float m_OffsetZ;
+        private Vector3 m_LastTargetPosition;
+        private Vector3 m_CurrentVelocity;
+        private Vector3 m_LookAheadPos;
+
+        // Use this for initialization
+        private void Start()
+        {
+            m_LastTargetPosition = target.position;
+            m_OffsetZ = (transform.position - target.position).z;
+            transform.parent = null;
+        }
+
+
+        // Update is called once per frame
+        private void Update()
+        {
+            // only update lookahead pos if accelerating or changed direction
+            float xMoveDelta = (target.position - m_LastTargetPosition).x;
+
+            bool updateLookAheadTarget = Mathf.Abs(xMoveDelta) > lookAheadMoveThreshold;
+
+            if (updateLookAheadTarget)
+            {
+                m_LookAheadPos = lookAheadFactor*Vector3.right*Mathf.Sign(xMoveDelta);
+            }
+            else
+            {
+                m_LookAheadPos = Vector3.MoveTowards(m_LookAheadPos, Vector3.zero, Time.deltaTime*lookAheadReturnSpeed);
+            }
+
+            Vector3 aheadTargetPos = target.position + m_LookAheadPos + Vector3.forward*m_OffsetZ;
+            Vector3 newPos = Vector3.SmoothDamp(transform.position, aheadTargetPos, ref m_CurrentVelocity, damping);
+
+            transform.position = newPos;
+
+            m_LastTargetPosition = target.position;
+        }
+    }
+}