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Question by JoshMBeyer · Sep 02, 2014 at 12:14 AM · c#camerafollowsmooth

Need help/advice with 2D Camera follow script.

I want to make a script so that the camera will follow the player. I need a variable for X amount. Then, if the player is moving right, it will be -Xamount. Then if the player is moving left, it will be +Xamount. So the player will always be off center of the screen. That way he can see what is in front of him. I also want the damping involved to make a smooth transition. This is what I have but Its not working properly.

 using UnityEngine;
 using System.Collections;
 
 public class SmoothCamV2 : MonoBehaviour
 {
     public Transform target;
 
     public float zDistance = 3.0f;
     public float height = 3.0f;
     public float damping = 5.0f;
     public float xDistance;
     private float dist = 0;
 
     public bool followBehind = true;
     public bool facingRight = true;
     
     void Awake()
     {
         var t = GameObject.Find("Player2D");
         target = t.gameObject.transform;
     }
 
     void FixedUpdate()
     {
         float dir = CrossPlatformInput.GetAxis("Horizontal");
         if (dir < 0) { dist = -xDistance; }
         if (dir > 0) { dist = xDistance; }
     }
 
     void Update()
     {
         Vector3 wantedPosition;
 
         if (followBehind)
 
             wantedPosition = target.TransformPoint(dist, height, -zDistance);
 
         else
 
             wantedPosition = target.TransformPoint(dist, height, -zDistance);
 
 
         transform.position = Vector3.Lerp(transform.position, wantedPosition, Time.deltaTime * damping);
     }
 }
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avatar image supericecream · Sep 02, 2014 at 04:57 AM 0
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Did you assign a value for xDistance? Also its better to get input in your Update(), not FixedUpdate(). Otherwise your code looks alright.

avatar image HarshadK · Sep 02, 2014 at 05:04 AM 0
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Just a word of advice, put all your camera movement code in LateUpdate() ins$$anonymous$$d of Update().

Also kindly specify what behaviour you expect and what behaviour you are getting when you specify that it is not working properly.

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Best Answer

Answer by Jeff-Rosenberg · Sep 02, 2014 at 05:10 AM

Try Vector3.MoveTowards.

 float cameraMoveSpeed = 5f; // m/s

 void Update()
 {
     Vector3 desiredCameraPosition = GetDesiredCameraPosition(); // However you want to do that
     transform.position = Vector3.MoveTowards(transform.position, desiredCameraPosition, cameraMoveSpeed * Time.deltaTime;
 }
 

This will move the camera towards your desired position at a fixed speed. You could also use Vector3.Lerp instead if you want the camera to move in a smoother way.

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