Sensors and mass properties

[yrns]

Objective

I was surprised to find that a sensor added as a child of a dynamic body affected the parent's behavior. Even with the density set to zero the difference was noticeable.

Solution

• Make the default mass and density zero for sensors.

and/or:

• Ignore sensors when updating parents' mass properties.

Maybe instead of adding a special case for sensors (which would be a breaking change), a note should be added to the sensor documentation indicating you need to set the mass properties to zero if you don't want to affect any parents?

---

Changelog

tbd

Migration Guide

tbd