Help Making a Mirror

Hello,
I am attempting to make a mirror as a part of my game. My thought process was to instantiate the player, rotate them 180 degrees and put them on the opposite side of the mirror. Here is the code that I have:

Code (CSharp):

1. void OnTriggerEnter(Collider other, Transform oth)
2.     {
3.         if (other.tag == "Mirror")
4.         {
5.             newpos = new Vector3(2 * oth.position.x - transform.position.x, transform.position.y, 2 * oth.position.z - transform.position.z);
6.             newrot = new Quaternion(transform.rotation.x + 180, transform.rotation.y, transform.rotation.z, transform.rotation.w);
7.             Instantiate(dupePrefab, newpos, newrot);
8.             Debug.Log("here");
9.         }
10.     }

Currently I am recieving this error:

Code (CSharp):

1. Script error: OnTriggerEnter
2. The message must have 0 or 1 parameters.
3. The message will be ignored.
4.  

Why is this happening? Is there some way to fix this?

Thank you.

 

The error message is pretty self explanatory.

http://docs.unity3d.com/ScriptReference/Collider.OnTriggerEnter.html

 

You gave the method 2 parameters...It says you need 0 or 1. @AcidArrow linked you the proper way of declaring OnTriggerEnter.

 

But somebody should point out that this probably isn't the best way to make a mirror. You may want instead to use a RenderTexture. Do a google search for "unity mirror" and you'll find a lot of resources about it.

 

Is there any way to use both parameters because I need to record the position of the collider to calculate where the newly instantiated object will form?

 

Your collider parameter already contains that info.
So other.transform.position should work just fine.