||ExplosionParticle extends SprayParticle to simplify the process of creating
a certain type of particle effect - in this case, a particle sent straight
out from its origin at a random angle.
||A GenericParticle is a particle along the lines of most particle systems; it
has a velocity and acceleration , rotation rate, scaling rate, and fade rate.
||SprayParticle extends GenericParticle to simplify the process of creating a
certain type of particle effect - in this case, a particle shot straight out
from its origin at an angle.
||A SwarmParticle is by far the most complex default particle, and the only one
that creates a persistent effect instead of dying over time.