C# Error Code in Unity 5

Hello everyone!

I am new to Unity and the only coding I have ever done is HTML.

I have been following the tutorial at http://unity3d.com/learn/tutorials/projects/roll-a-ball/moving-the-player

I am at the point where I have to write scripting in C#. Here is what he told me to write in the code:

1 using UnityEngine;
2 using System.Collections;
3
4 public class PlayerController : MonoBehaviour
5 {
6 void FixedUpdate ()
7 {
8 float moveHorizontal = Input.GetAxis("Horizontal");
9 float moveVertical = Input.GetAxis("Vertical");
10
11 Vector3 movement = new Vector3(moveHorizontal, 0.0f, moveVertical);
12
13 Rigidbody.AddForce (movement);
14 }
15}


And here is the error code I get:


Assets/Scripts/PlayerController.cs(13,27): error CS0120: An object reference is required to access non-static member `UnityEngine.Rigidbody.AddForce(UnityEngine.Vector3, UnityEngine.ForceMode)'

Since I have no prior C# knowledge, I am having trouble understanding this. I have looked through several knowledge base type articles and they only confuse me more. Any help would be greatly appreciated.

Thanks in advance!

 

Try to use rigidbody.AddForce instead of Rigidbody.AddForce.

 

First, please use Code tags.

Second, use ridigbody instead of RigidBody

 

Rigidbody is a class; you need to refer to the specific instance, by using GetComponent<Rigidbody>().

But don't use rigidbody since the component shortcuts are removed in Unity 5 and won't work. Even if you're using Unity 4 it's a good idea to stop using them.

--Eric

 

That's a thing? Gah, that sucks. Guess I need to start making variables for them then... I'm so used to using the ones built in.

 

@RiokuTheSlayer
What do you mean use Code tags? I have never posted to a forum before and I have never used code either. I am REALLY new. I thought that Unity would be more like Blender. I think I have really gotten in way over my head.
I am using Unity 5. So what should I use instead of rigidbody?

 

Does anyone know of a good beginner's tutorial for Unity 5? All the ones I keep finding are for 4 or 4.1. That would help me out so much.

 

Check this page

http://forum.unity3d.com/threads/using-code-tags-properly.143875/

 

Unity 5 JUST came out. Most of the tutorials for Unity 4 still appl, but with minor changes to the code

 

Thanks for that! I just read it. So here is the right code.

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class PlayerController : MonoBehaviour
5. {
6.     void FixedUpdate ()
7.     {
8.         float moveHorizontal = Input.GetAxis("Horizontal");
9.         float moveVertical = Input.GetAxis("Vertical");
10.  
11.         Vector3 movement = new Vector3(moveHorizontal, 0.0f, moveVertical);
12.  
13.         Rigidbody.AddForce (movement);
14.     }
15. }

Like that?

 

Line 13 should be:

Code (CSharp):

1. GetComponent<Rigidbody>().AddForce (movement);

Although you could also do:

Code (CSharp):

1. public class PlayerController : MonoBehaviour
2. {
3.     private Rigidbody rigidbody;
4.     void Awake()
5.     {
6.         rigidbody = GetComponent<Rigidbody>();
7.     }
8.    
9.     void FixedUpdate ()
10.     {
11.         float moveHorizontal = Input.GetAxis("Horizontal");
12.         float moveVertical = Input.GetAxis("Vertical");
13.  
14.         Vector3 movement = new Vector3(moveHorizontal, 0.0f, moveVertical);
15.  
16.         rigidbody.AddForce (movement);
17.     }
18. }

 

Thank you so much guys! I am downloading version 4 now. The tutorial I am using is for that version. I figured it would probably help a whole lot. It might even confuse me less.

 

I was going to suggest that. Use 4 for now. Later, once you know more, upgrade