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This question was closed May 28, 2014 at 08:07 PM by fafase for the following reason:

The question is answered, right answer was accepted

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Question by NormN · May 28, 2014 at 06:03 PM · positionvector

Problem setting references to GetComponent Script function return values

Hello! I am trying to get a vector2 from a pacMan script function so I can find the vector between pacman and an enemy.

I want to subtract pacman's position from an enemy position.

Here is my code from the enemy class:

 private Vector2 pacPos;
 private Vector2 position;
 private GameObject pacman;    
 private PlayerScript pacManScript;
 privateVector2 v;
 
 void Awake ()
     {
         pacman=GameObject.Find("PacMan");
         pacManScript=pacman.GetComponent<PlayerScript>();
     }
 void Start () 
     {
         
         position=new Vector2(1,1);
         pacPos= pacManScript.getPosition();
         v=pacPos-position;
 print("distance between pacman which is "+ pacPos+ " and inky's "+ position+ "is  "   + v);
 
     }

Here it is not working, since the pacPos reference gets a wrong vector value.

When I do this though it works:

 print("distance between pacman which is "+ pacManScript.getPosition()+ " and inky "+ position+ "is  "+ (pacManScript.getPosition()-position));

Here I am not using a reference.

I was wondering how come this is the case? It seems that my pacPos reference to pacManScript.getPosition() doesent work the way I want it to, it gets assigned a wrong vector.

Thank you...I really want to understand GetComponent.

Take Care.

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avatar image rutter · May 28, 2014 at 05:43 PM 0
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What value is wrong? In what way is it wrong? If anything, you might have a subtle error in your math, or the getPosition() function you wrote.

avatar image NormN · May 28, 2014 at 05:45 PM 0
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In the print statements I dont mean distance, I mean vector.

avatar image NormN · May 28, 2014 at 06:21 PM 0
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@rutter: The pacPos is wrong because it gets a vector of (0,0) ins$$anonymous$$d of what it actually is (0,1).

The getPosition() function is just this, it is inside another class:

 public Vector2 getPosition()
     {
         return position;
     }

When I just go straight for it and do pac$$anonymous$$anScript.getPosition(), it gets the right vector. I just can't seem to set a reference to the right vector, but I can get the vector if I just go straight for it.

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Answer by NormN · May 28, 2014 at 08:07 PM

I totally understand now! I was displaying values at the same time they were being changed, so I was displaying the old values (this has to do with two start methods, each in a different class).

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