Rigidbody/AddForce not moving the object.

Hey everyone!
So I've recently been working on a project and just as I was getting into the scripting side I already came into a problem... Whenever I add a force to the object, it won't move. No matter how hard I try the object refuses to move. I've had no error messages, and I think my code is correct, if you see any problems please help.

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class MoveRocket : MonoBehaviour {
6.  
7.     public GameObject rocket;
8.     public float moveSpeed = 1000f;
9.     private Rigidbody rigidbodys;
10.  
11.  
12.     void Start () {
13.         rigidbodys = rocket.GetComponent<Rigidbody> ();
14.     }
15.    
16.  
17.     void FixedUpdate () {
18.         if (Input.GetKey (KeyCode.W)) {
19.             rigidbodys.AddForce (0, moveSpeed * Time.deltaTime, 0);
20.         }
21.     }
22. }
23.  

I don't know what's wrong any help is appreciated,
Thanks!

 

What are your mass and drag settings for that rigidbody? Have you verified that AddForce is actually getting called?

 

The issue is most probably the mass of the rigidbody. Try the default value of 1 and see if that helps.

 

Yes i have verified that it is being called and the settings for the rigidbody has nothing changed except for it is kinematic

 

Everything is the same except its kinematic and is interpolated i have tried al combinations with those but haven't changed anything else

 

You said it is kinematic, right? That is why. Kinematic objects do not use the physics system. Either uncheck isKinematic or use transform.position.MoveTowards (or one of the other methods that moves the transform rather than rigidbody). But remember that the transform ignores physics, and moving using the transform like this would not trigger/collider colliders in the way you'd expect.

 

Oh my lord thanks so much for this... I knew it was such a simple fix but i totally forgot about turning that on and off. You are a life saver. Gold medal. Thanks again.

 

I was using this code with a 3d cube and a 2d gameobject, Game view in 2d

Code (CSharp):

1. spawnedWeapon.AddForce(spawnedWeapon.transform.forward * fireForce);

1. in 3d view, cube was moving forward, but in 2d it will appear to be in the same place
2. a 2d gameobject can't move in z axis

Hope it helps.

 

Possible solution:
https://forum.unity.com/threads/rigidbody-addforce-not-moving-the-object.539865/#post-3559413
Answer 8