Just a quick RnD for some Non-hero missile trails with volume conversion approach in order to avoid using pyro sim. I meant to make BG smoke trail assets as cheap as possible. I generated the points from the guide alembic geometries and put that to the POP network in order to add some basic movement and the particle age attribute. After that, the @Cd will be modified by the normalized age in order to make the value decay. At conversion stage the modified color values will be used as density(for smoke) and temperature(for flame).
Credit: So Ishgaki