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Question by Brokenarrow · Jun 24, 2014 at 08:05 PM · c#positionparentlocalposition

Adjusting localPosition

Hi, I am trying to keep an object within its parents boundaries. So I created this script:

 Vector3 Position = transform.localPosition;

 if (Position.x > 0.5f)
 {Position.x = 0.5f;}
 print (Position.x);


In order to prevent the object from moving over the 0.5f treshold. However, the object simply doesn't respond to this treshold.

What am I doing wrong?

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avatar image AndyMartin458 · Jun 24, 2014 at 08:08 PM 0
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@Brokenarrow Well, there are more things to worry about than just the x position. What about the y and z? Also, make sure this function running in update

avatar image Brokenarrow · Jun 24, 2014 at 09:21 PM 0
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Im aware of the Y and Z, this is just as an example. It is running in Update.

It simply ignores the 0.5f treshold. The object can cross the boundary freely.

(print (Position.x); does stop at 0.5f however)

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Answer by CanisLupus · Jun 24, 2014 at 10:19 PM

You're not setting the position of the object with Position.x = 0.5f. That instruction only sets the x value of the Vector3 named "Position". To set the object's position you need to do transform.localPosition = Position after your example. Does this make sense?

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avatar image AndyMartin458 · Jun 24, 2014 at 10:33 PM 1
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@Brokenarrow oh yeah. @CanisLupus makes a valid point. You're copying the vector and modifying it. That won't affect the Transform.

avatar image Brokenarrow · Jun 25, 2014 at 12:04 PM 0
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Thank you very much, I can't believe I didn't see that!

avatar image CanisLupus · Jun 25, 2014 at 01:21 PM 0
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Oh, it happens, believe me ;) You're welcome!

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