Keeping two objects in frame

Here is a bit of code to get you started. I'm assuming an orthographic camera. Variables explained:

• target - object to follow

• bottom - world 'y' position that will be right at the bottom of the camera no matter what the ortiographicSize is set to.

• lead - world units on how much to lead the target. You could add code to vary this value based on the orthographic size.

• above - amount of space to leave above the pivot of the target

• minView - the lower limit to the world units seen by the camera. That is, if the distance between the bottom and the target plus the above is less than this amount, the camera will no longer zoom. I added this based on what I saw in the video.

This script should be added to the camera:

 #pragma strict
 
 var target : Transform;
 var bottom : float = -4.0;  // Bottom edge seen by the camera
 var lead : float = 2.5; // amout to lead the target
 var above : float = 1.5; // amount above the target pivot to see
 var minView : float = 7.5;
 
 function LateUpdate() {
     var height = target.position.y + above - bottom;
     height = Mathf.Max(height, minView);
     height /= 2.0;
     camera.orthographicSize = height;
     transform.position = Vector3(target.position.x + lead, bottom + height, -10); 
 }