koobas.hobune.stream
Add attribute to Vector2 Class
Hello. I'm working on something that uses Vector2 a lot.
I now realize I'd like to add an additional int attribute to the class, as an ID. The problem is that I can't derive a class from Vector2 because it is a "sealed" type...
I now found out that there are "Extension" methods to add functionality. Is there anything similar to add an attribute?
I could create my own class, but it's rather annoying to have to rewrite all of the code.
Thanks!
Extension methods are used to add methods, and AFAIK, it's not possible to add class members this way.
I advise you to write your own class, but don't worry, you don't have to rewrite it completely.
using UnityEngine;
public struct MyVector
{
public Vector2 Value
{
get; set;
}
public int ID
{
get; set;
}
public MyVector( Vector2 v ) : this( 0, v ) { }
public MyVector( float x, float y ) : this( 0, x, y ) { }
public MyVector( int id, Vector2 v )
{
ID = id;
Value = v;
}
public MyVector( int id, float x, float y )
{
ID = id;
Value = new Vector2( x, y );
}
public static implicit operator Vector2( MyVector v )
{
return v.Value;
}
public static implicit operator MyVector( Vector2 v )
{
return new MyVector( v );
}
}
Then, you will be able to use your new struct as follow:
MyVector v = new MyVector();
Debug.Log( ( (Vector2) v ).magnitude ) ;
// OR
Debug.Log( v.Value.magnitude );
Had to rewrite a lot of the code that used Vector2, but it is working, with a few added functions to the struct.
So I'll accept this answer. Thanks! :)
