Accessing Rigidbodies [SOLVED]

[Tompete Kerman]

I'm trying to canabalize flywlyx's GN Drive Mod to re-create an Anti-Grav mod I made a few years ago, but I think there's been a Unity update since then that's messed with what works.

The issue I'm having it with it is related to this code:

foreach (Part p in this.vessel.parts)
            {
                if ((p.physicalSignificance == Part.PhysicalSignificance.FULL) && (p.rigidbody != null))
                {
                    p.rigidbody.AddForce(-gee * p.rigidbody.mass);
                }
            }

It's telling me that there is no lowercase "rigidbody" in Parts, but trying uppercase Rigidbody, RigidBodyPart, or rb all don't have the desired effect.

I even tried downloading the original GN drive mod to see if that's broken, but that works fine.

Can anyone sleuth out what I'm doing wrong? I'm running Visual Studio 2017, Framework set to 3.5, and the class I'm building has inherited from PartModule.

[Shadowmage]

On 7/30/2019 at 7:35 PM, Tompete Kerman said:

It's telling me that there is no lowercase "rigidbody" in Parts, but trying uppercase Rigidbody, RigidBodyPart, or rb all don't have the desired effect.

The GameObject.rigidbody get method was removed in a (semi) recent Unity update.  You instead need to pull a reference to the component with GetComponent().

E.G.

Rigidbody rb = part.GetComponent<RigidBody>();

Cache the results if you need access more than once, as it is fairly expensive to use getComponent every frame.

Edit:  check the casing on my example; I don't remember if its 'Rigidbody' or RigidBody'... but it is only one of those...

 

Edited August 1, 2019 by Shadowmage

[peteletroll]

The Part class has a rb property. For example, you can access it in a PartModule like this:

Rigidbody rb = part.rb;

It is null for physicsless parts.

Edited August 2, 2019 by peteletroll

[Tompete Kerman]

Turns out the solution was to actually run everything in FixedUpdate in stead of overriding onFixedUpdate, and to drop any reference to rigidbody, like so:

p.AddForce(-gee * p.mass)