How to Keep Player in the Center of the Screen?

Hello,

I'm using the 2D Side Scroller template for an iOS game. I need to make a few adjustments to the Smooth Follow 2D Script.

When my player falls for an extended period of time, he falls off of the camera.

I want him to stay in the camera's view, not slide out of view.

I've done many searches but still have not come across the information I need.

I'm not sure what I need to do. Here's the code:

 function LateUpdate() 
 {
     
      
     
     thisTransform.position.x = Mathf.SmoothDamp( thisTransform.position.x, 
         target.position.x+horizontal, velocity.x, smoothTime);
         
     thisTransform.position.y = Mathf.SmoothDamp( thisTransform.position.y, 
         target.position.y+height, velocity.y, smoothTime);
         
             
 }

Any help or pointers would be very appreciated.

Thanks.