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Question by Esterelle · Apr 02, 2013 at 08:29 AM · c#camerascrolling

How to do camera scrolling?

I would like to make a 2D scrollable map using camera scrolling, however I have no idea on how should I go about doing it. Can anyone help me with this? Thanks.

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avatar image cdrandin · Apr 02, 2013 at 08:55 AM 0
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Doing some tutorials will be very helpful for you if you have no idea how to at least do it.

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Answer by LyanApps · Apr 02, 2013 at 04:41 PM

I assume your map is on the x,z plane.

 float pan_speed = 10.0f;
 
 function Awake(){
 camera.y = 100; //put the camera above the world
 camera.Rotate(transform.right, 90); // transform the camera on
 }
 
 function Update(){
 if(Input.GetKey("up"))
   camera.Translate(Vector3.forward * Time.deltaTime * pan_speed, Space.World);
 if(Input.GetKey("down"))
   camera.Translate(-Vector3.forward * Time.deltaTime * pan_speed, Space.World);
 
 if(Input.GetKey("left"))
   camera.Translate(-Vector3.right * Time.deltaTime * pan_speed, Space.World);
 if(Input.GetKey("right"))
   camera.Translate(Vector3.right * Time.deltaTime * pan_speed, Space.World);
 }
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avatar image Esterelle · Apr 03, 2013 at 03:06 AM 0
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Thanks a bunch, @LyanApps ! I changed a little bit of the codes for the "up" key and "down" key and placed them inside void OnGUI() though and it works (:

 void OnGUI ()
 {
     if ( Input.Get$$anonymous$$ey("up") )
     {
         Camera.main.transform.Translate( Vector3.up * Time.deltaTime * scrollSpeed, Space.World );
     }
             
     if ( Input.Get$$anonymous$$ey("down") )
     {
         Camera.main.transform.Translate( Vector3.down * Time.deltaTime * scrollSpeed, Space.World );
     }
 }
 
avatar image Esterelle · Apr 03, 2013 at 03:42 AM 0
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Is it possible to set a limit as to how much the camera can be scrolled? And how do I go about doing it?

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