Zooming a telescopic camera

In this recipe, we will create a telescopic camera that zooms in whenever the left mouse button is pressed.

 

Getting ready...

This recipe adds to the scene created in the first recipe of this chapter, so make a copy of that project folder and do your work for this recipe with that copy.

How to do it...

To create a telescopic camera, follow these steps:

1. Create a new C# script-class named TelescopicView, and add an instance-object as a component to the Main Camera (child of MsLazer):

  using UnityEngine;

     public class TelescopicView : MonoBehaviour {
         public float zoom = 2.0f;
         public float speedIn = 100.0f;
         public float speedOut = 100.0f;
         private float initFov;
         private float currFov;
         private float minFov;
         private float addFov;

         void Start() {
             initFov = Camera.main.fieldOfView;
             minFov = initFov / zoom;
         }

         void Update() {
             if (Input.GetKey...