Emits particles from the bones of the skeleton of the unit the effect is bound to. This page describes its use as an emission surface of a complex emitter.
A bone here is the segment between a joint and its parent. When the skeleton
loads, every joint that has a parent and passes JointMask contributes one bone. Root
joints contribute none, though a root can still be the parent end of a bone.
Picking the point. A bone is picked at random, weighted by its length in the skeleton file's rest pose, so long bones emit more and a bone of zero length never emits. The point is then uniformly random along that bone, between the joint and its parent, measured in the bound unit's current pose. The emitter copies that pose every frame. The point is added to the particle's birth position.
Direction. The surface also returns a random direction at right angles to the bone, and the emitter always applies it: the birth velocity and the birth acceleration keep their length and take that direction. There is no property to turn this off, as there is on VfxEmissionMeshData.
An effect that is bound to nothing, or to something without a skeleton, gets no point.
List2<Hash> = [] The joints to emit from, as hashes of their names, matched without regard to case. An empty list keeps every joint. A joint that is not listed contributes no bone. The listed joint is the child end of its bone, so the bone runs from it to its parent whether or not the parent is listed.
String = "" Path of the skeleton (.skl) whose joints define the bones and their weights.
Required: with an empty name the surface is ignored. It is also ignored when the
file fails to load or when no bone passes JointMask.