Limiting the position of a gameobjevt between two values

Question

I am moving my plane. But it should only move between two positions like -20f to 20f.

I am using this logic

 if(plane.transform.position.x >= -20f && plane.transform.position.x <= 20f)
         {
             if(Input.mousePosition.x< 0)
                 plane.transform.Translate(-Vector3.right * speed * 2 * Time.deltaTime);
             
             else if(Input.mousePosition.x > 0)
                 plane.transform.Translate(Vector3.right * speed * 2 * Time.deltaTime);
         }

The problem is it is going beyound 20f.... i.e. it goes to 20.06.... and then it stops because now it willl not enter inside this condition.

Answer 1

Answer by Chronos-L · Apr 05, 2013 at 10:56 AM

Have you tried Mathf.Clamp?

 if(plane.transform.position.x >= -20f && plane.transform.position.x <= 20f)
 {
     ...
 }
 else { //out of range
 
     //uJS
     plane.transform.position.x = Mathf.Clamp( plane.transform.position.x, -20f, 20f );
 
    //C#
    Vector3 p = plane.transform.position;
    plane.transform.position = new Vector3( Mathf.Clamp( p.x, -20f, 20f ), p.y, p.z );;
 }

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united4life · Apr 05, 2013 at 12:04 PM 0

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still it is going to 20.06... but with this method at least it is co$$anonymous$$g back to 20... but it should not go beyond 20.

Chronos-L · Apr 05, 2013 at 12:15 PM 0

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For it to never go to 20.06, you can try:

 if(plane.transform.position.x >= -20f && plane.transform.position.x <= 20f)
 {
    if(Input.mousePosition.x< 0)
       plane.transform.Translate(-Vector3.right * speed * 2 * Time.deltaTime);
    else if(Input.mousePosition.x > 0)
       plane.transform.Translate(Vector3.right * speed * 2 * Time.deltaTime);
 
    //uJS
     plane.transform.position.x = $$anonymous$$athf.Clamp( plane.transform.position.x, -20f, 20f );
  
    //C#
    Vector3 p = plane.transform.position;
    plane.transform.position = new Vector3( $$anonymous$$athf.Clamp( p.x, -20f, 20f ), p.y, p.z );
 
 }

united4life · Apr 05, 2013 at 12:44 PM 0

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yeah now its working.... thanks buddy.... clamp i didnt know

Limiting the position of a gameobjevt between two values

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