Cable chaos when attached to a picked pickable

[Timmy-the-nobody]

Prerequisites

• I'm sure both client and server are on the latest update.
• I have read the console error message carefully (if applicable).

Your Environment

• Version: 1.60.0
• Operating System: Windows 11

Description

When attaching a cable between a picked pickable and a prop the prop will become crazy and teleport in a random position (near the center of the map I think)

Steps to reproduce the behavior

1: Run the snippet bellow with sandbox gamemode (and make sure at least 1 prop is spawned)
2: Pickup any sandbox tool to create a constraint between the tool muzzle and the first prop found
3: Contemplate the chaos

ToolGun.Subscribe("PickUp", function(self, eChar)
    for _, eProp in ipairs(Prop.GetAll()) do
        local eConstraint = Cable(eProp:GetLocation(), true)
        eConstraint:SetLinearLimits(ConstraintMotion.Locked, ConstraintMotion.Locked, ConstraintMotion.Locked)
        eConstraint:SetAngularLimits(ConstraintMotion.Locked, ConstraintMotion.Locked, ConstraintMotion.Locked)

        eConstraint:AttachStartTo(self, Vector(), "muzzle")
        eConstraint:AttachEndTo(eProp)
        break
    end
end)

Expected behavior

It should be constrained the same way as if the attach start actor wasn't a pickable

Actual behavior

C H A O S

[gtnardy]

[gtnardy]

The issue is that this bone doesn't exist on the Tool mesh, and I figured that Cables only accepts attaching to Bones (not socket).

I added an internal validation so for those cases it will give an error on client side and will attach to root bone instead.

Also I'm adding some new logic for when picking up Pickables, any attached cable will detach/destroy automatically (as already happens when a Character enter a vehicle), as Cables require the objects to simulate physics to work.