Move cam up when character climbs

I have some code that makes the camera follow the player (without making it a child). The problem with the code is that it only works if the player stays at the same Y position. If it climbs steps I get a lovely view of the players feet.

Any ideas how to amend this code to get it to follow in the y direction as well?

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class cameraFollow : MonoBehaviour {
5.  
6.     public AnimationCurve FollowCurve = AnimationCurve.Linear(0,1,10,50);
7.     private GameObject cam;
8.     private Vector3 offset;
9.  
10.     // Use this for initialization
11.     void Start () {
12.         cam = Camera.main.gameObject;
13.         offset = transform.position - cam.transform.position;
14.  
15.     }
16.    
17.     // Update is called once per frame
18.     void FixedUpdate () {
19.         Vector3 currentPos = transform.position - offset;
20.         currentPos.y = -offset.y;
21.         Vector3 camPos = cam.transform.position;
22.  
23.         float distance = Vector3.Magnitude (currentPos - camPos);
24.         distance = FollowCurve.Evaluate (distance);
25.         cam.transform.position = Vector3.MoveTowards (camPos, currentPos, distance * Time.fixedDeltaTime);
26.  
27.     }
28. }
29.  

 

Did you try something along the lines of ~ ?

Code (CSharp):

1. currentPos.y = -offset + transform.position.y;

ot: I like your picture c:

 

or just remove line 20...

 

Yeah, assuming that it was not intented to subtract the Y different twice.

 

Hey thanks for the replies guys. I'll give it a go shortly after I try and fix another issue. And the pic, thanks Maggichan.

 

Yep removing that line worked. Is it possible to swing the camera back to behind the character?

 

Code (CSharp):

1. float distance = 5f;
2. Vector3 currentPos = (transform.position - offset) + (cam.transform.position - transform.position).normalized * distance;

It basically subtracts the player's position from the camera's position,
and normalizes. Which give you the direction of towards the camera relative to the player.
We multiply it by the distance offset that you want.
And add it with the currect camera position.

Watch this Vector Maths tutorial if you want to learn more about 3D space calculations n such.