Question Camera zoom when collided with object

Hello everyone, Do you know how in most 3D 3rd person video games the camera won't clip through a wall or floor, instead just zoom?
I'm having trouble programming that. I have NO script and would like one and all the threads I've seen are really complex and I don't quite know what is going on.
I try to look it up and all I get is zoom on command touch screen!
I just want the zoom script, not the camera movement, I have that sorted. it revolves around having a parented object at the target rotating taking the camera with it.

thank you in advance!

 

Code (CSharp):

1. using UnityEngine;
2.  
3. public class CameraZoomBlock : MonoBehaviour
4. {
5.     float idealDistance;
6.    
7.     void Start()
8.     {
9.         idealDistance=Vector3.Distance(transform.parent.position,transform.position);
10.     }
11.  
12.     void Update()
13.     {
14.         Vector3 target=transform.parent.position+transform.parent.up;
15.         if (Physics.Raycast(target,transform.position-target,out RaycastHit hit,idealDistance))
16.             transform.position=hit.point;
17.         else
18.             transform.position=Vector3.MoveTowards(transform.position,target+(transform.position-target).normalized*idealDistance,20*Time.deltaTime);
19.     }
20. }

 

You don't program this anymore!

Use Cinemachine. Find a tutorial that explains Cinemachine 3rd person follow camera with proper wall evasion.
I think the 3rd Person Starter Asset on the store (made by Unity) also has camera collider evasion.

 

I really don't understand why Unity does not advertise the awesome Cinemachine tool enough! It's one of the (rare) tools that really works very well and should become the standard in all Unity templates and documentation.

 

I think they're gonna show it at the next Superbowl.

 

In addition to being regularly featured at the Superbowl, there is also a dedicated forum:

https://forum.unity.com/forums/cinemachine.136/

If you absolutely insist on making your own camera controller, it is Really Hard(tm) to get it right.

The simplest way to do it is to think in terms of two Vector3 points in space: where the camera is LOCATED and where the camera is LOOKING.

Code (csharp):

1. private Vector3 WhereMyCameraIsLocated;
2. private Vector3 WhatMyCameraIsLookingAt;
3.  
4. void LateUpdate()
5. {
6.   cam.transform.position = WhereMyCameraIsLocated;
7.   cam.transform.LookAt( WhatMyCameraIsLookingAt);
8. }

Then you just need to update the above two points based on your GameObjects, no need to fiddle with rotations.

Does nothing for collision, obviously.

 

thanks everyone, I believe I can figure it out from here

 

This depends on what you want to achieve...

Personally i like violons and not LookAt(). It snaps in certain circumstances.