Camera zoom?

I'm making an fps game with camera zoom but my script doesn't work right

Here's the script:

var zoom : int = 40; //<span class="fdx72e" id="fdx72e_12">determines</span> amount of zoom capable. Larger number means further zoomed in

var normal : int = 60; //determines the default view of the camera when not zoomed in

var smooth : float = 5; //smooth determines speed of <span class="fdx72e" id="fdx72e_10">transition</span> between zoomed in and default state

private var zoomedIn = false; //boolean that determines whether we are in zoomed in state or not

function Update () {

if(Input.GetButton("Fire2")){ //This function toggles zoom capabilities with Fire2. If it's zoomed in, it will zoom out

zoomedIn = !zoomedIn;

}

if(zoomedIn == true){ //If "zoomedIn" is true, then it will not zoom in, but if it's false (not zoomed in) then it will zoom in.

camera.fieldOfView = Mathf.Lerp(camera.fieldOfView,zoom,Time.deltaTime*smooth);

}

else{

camera.fieldOfView = Mathf.Lerp(camera.fieldOfView,normal,Time.deltaTime*smooth);

}

}

Whenever i use it the camera shakes violently when i hold it in and will only zoom in when I let it go. Also how would i unfocus my camera when its zoomed in so that my fps character is blurry. That's not something I need but would hepful. Thanks!

 

Please use code tags to make the code readable in the forum:
http://forum.unity3d.com/threads/using-code-tags-properly.143875/

 

Your problem is because your asking if the key is constantly down. Which your then flipping to on off.

this should fix it:

Code (JavaScript):

1. var zoom : int = 40; //<span class="fdx72e" id="fdx72e_12">determines</span> amount of zoom capable. Larger number means further zoomed in
2. var normal : int = 60; //determines the default view of the camera when not zoomed in
3. var smooth : float = 5; //smooth determines speed of <span class="fdx72e" id="fdx72e_10">transition</span> between zoomed in and default state
4. private var zoomedIn = false; //boolean that determines whether we are in zoomed in state or not
5.  
6. function Update () {
7.     if(Input.GetButtonDown("Fire2")){
8.         zoomedIn = !zoomedIn;
9.     }
10.  
11.     if(zoomedIn == true) {
12.         camera.fieldOfView = Mathf.Lerp(camera.fieldOfView, zoom,Time.deltaTime*smooth);
13.     } else{
14.         camera.fieldOfView = Mathf.Lerp(camera.fieldOfView, normal,Time.deltaTime*smooth);
15.     }
16.  
17. }

 

You should use smooth damp instead of lerp:
http://docs.unity3d.com/ScriptReference/Mathf.SmoothDamp.html

 

That's how I wanted it so that it wail zoom if held in

 

Code (csharp):

1. if(Input.GetButton("Fire2")){
2.   zoomedIn = true;
3. } else {
4.   zoomedIn = false;
5. }

or

Code (csharp):

1. zoomedIn = Input.GetButton("Fire2");