Cannot figure out Vector2

So I am creating a script for my game, and I need to create a Vector2 to do something with my player position. I created a game object called playerObject, which is the player (obviously). I also created the Vector2 called playerPos and set it to playerObject.transform.position. I get an error saying this:

Assets\Scripts\Inventory.cs(12,32): error CS0236: A field initializer cannot reference the non-static field, method, or property 'Inventory.playerObject'

Code (CSharp):

1.     public GameObject playerObject;
2.     public Vector2 playerPos = playerObject.transform.position;

Can someone please help me?
EDIT: It's flagging the "playerObject" in the Vector2 line.

 

You can only assign a value to variable inside of a method, try assigning the value in the Start method.

Edit: or actually, you can assign simple value literals (such as

float x = 0f;

) but something like

playerObject.transform.position;

cannot be done outside of a method because it requires some runtime processing. Like I said, though- just put the assignment in the Start method and it should work.

 

If you are using Vector2s for a 2D game in this case you must use a Vector3.

 

Vector2 and Vector3 are implicitly convertible between each other. You don't have to use a Vector3 to store the position of the object if you only care about the X and Y coordinates. That said it is possible for the conversion to be ambiguous and confuse the compiler. In that case you need to manually tell it which way you intended.

 

Thank you guys so much. It worked! I had to but the Vector2 in Update() because this is an inventory script, and I had to include dropping, so whenever you dropped an item it would appear at the Player.