HitZone
One part of an entity a shot may strike: a sphere round at, or a
capsule from at to to, and the times the weapon’s damage a hit there
deals. Each point is in the entity’s own frame: metres from its feet,
with its front along -z, the way an entity faces at rest. A point is an
{ x, y, z } record or a Vector3, either of which the stream carries
as it came.