Summary

Content "Split vehicle part wheel_caster into small and large variants"

Purpose of change

Caster wheels have been sort of pulling double duty being used for both indoor furniture such as office chairs as well as outdoor vehicles such as grocery carts, and causing issues with how dragging requirements are calculated. See also #65972.

Describe the solution

The proposed solution is splitting casters into 2 inch and 6 inch variants for indoor and outdoor use, respectively. Specifically, casters will be renamed to small casters and large casters will be introduced.

The vehicle part stat changes were basically compiled from comparing 2 inch casters to 6 inch casters on Amazon.com, though I'm not quite sure what units rolling resistance uses. The current value for casters (now small casters) is three times higher than any other wheel vehicle part. (Except for wheel_10, which was introduced in #36564 as another replacement for casters and probably just copied the value.)

I also changed a few vehicles to use the large casters, specifically:

• Shopping Cart
• Rolling Trash Can
• Grocery Cart
• Welding Cart

Describe alternatives you've considered

There's probably value in going over the wheel physics to make sure there that all the vehicle parts have correct stats, but I still think that it's better to have two separate parts instead of pretending shopping carts use the same wheels as office chairs.

Testing

Threw the JSON files in a Cata install and loaded a new world and checked the recipes and spawned in a Rolling Trash Can. Everything seemed to work.

Additional context