I am attempting to weight paint a rig whose mesh is made of many loose parts. (I am attempting to import it into a game, and for whatever reason, separating the mesh and parenting the individual loose parts to individual bones doesn't seem to work once I leave blender.)
I would like to be able to weight paint in such a way that the brush falloff only affects the given loose part I am currently painting, without affecting any other loose parts. (that is, I want brush falloff to be limited to the contiguous mesh I am working on.)
Is there a means to do such a thing? I know that what I am asking is possible in Maya, so I assume it should also be possible in blender.
Note that I am not attempting to do anything with automatic weights; I am trying to do this manually.