Fixed camera on rails.

You have to code t$$anonymous$$s sort of t$$anonymous$$ng manually and there are endless techniques that can be used to ac$$anonymous$$eve varying results. Here's how to get the camera to follow an object on the X and Y axes to get you started.

 //set t$$anonymous$$s to the object to follow
 public GameObject followObject;
 
 //I recommend moving the camera in the LateUpdate method
 void LateUpdate()
 {
     Vector3 camPos = Camera.main.transform.position;
     camPos.x = followObject.transform.position.x;
     camPos.y = followObject.transform.position.y;
     Camera.main.transform.position = camPos;
 }

EDIT: Attempted java version (I don't use java, there may be mistakes):

 //set t$$anonymous$$s to the object to follow
 var followObject : GameObject;
 
 //I recommend moving the camera in the LateUpdate method
 function LateUpdate()
 {
     var camPos : Vector3 = Camera.main.transform.position;
     camPos.x = followObject.transform.position.x;
     camPos.y = followObject.transform.position.y;
     Camera.main.transform.position = camPos;
 }