ECS Ghosts? I need a primer/tutorial please, or another route to a solution

Unity Engine
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1

Edit: I was able to remove “Netcode for Entities” and can affect a basic entity with physics. It has taken some effort, but I am out of Exception-Hell.

I am working on a project and need a ECS physics vehicle controller (I’d be HAPPY to pay for it, if anyone has one) and I am looking through the MegaCity project and attempting to recreate the MoveJob (as found in PlayerVehicleJobs.cs) and have a situation where the object is not moving

    internal partial struct MoveJob : IJobEntity
    {
        public float DeltaTime;
        const float BaseSteeringSpeedMultiplier = 0.01f;

        public void Execute(
            in PlayerVehicleInput controlInput,
            in PlayerVehicleSettings vehicleSettings,
            ref PhysicsVelocity velocity,
            in VehicleHealth health,
            ref VehicleMovementState vehicleMovementState)
        {
            
            velocity.Linear = 10.0f;
            return;//

Thing is, I get the following error:
[ClientWorld] The default physics world contains 1 dynamic physics objects which are not ghosts. This is not supported! In order to have client-only physics, you must setup a custom physics world:

  • Entity(430:1) Capsule - PLAYER

The only thing I have gathered so far is a Ghost is used for networking, and I BELIEVE I can grasp the need for it… but I don’t need that, this is a single-player game (atm)

So I either need a way to AVOID the network portion of this (preferred!) or learn about Ghosts and how to solve this issue.

Details:
Unity 2022.3.46f1
Entities: 1.3.2
Netcode for Entities: 1.3.2
Unity Physics: 1.3.2

The prefab is in a subscene and has only the following components:
Mesh Filter
Capsule Collider
RigidBody
PlayerVehicleControllerAuthoring

So any guidance on where to go next, what to read/watch would be more helpful. Thanks

2

Same problem…

PS: This thread has been created 3 month ago and no response from devs… I just “love” how support team works… Hey Unity! How do you expect me switching to DOTS if can’t get a piece of information about it?

3

anyone solved this?

4

Maybe I had a similar problem: How to use RayCast in Physics together with Netcode?

However, in my case, I didn’t need movement, but Raycast.

Perhaps here, too, you need to create a custom physical world, and put entities there that will not be associated with the server.

5

You might be happy to hear that we just released an official solution for vehicles in Unity DOTS.
See here:

For any Netcode specific questions I suggest adding the Netcode-for-Entities tag to your topic. The Netcode folks should be able to help you out.