anchor: ParticleSystem:setQuads
  Sets a series of Quads to use for the particle sprites. Particles will choose a Quad from the list based on the particle's current lifetime, allowing for the use of animated sprite sheets with ParticleSystems.
  ParticleSystem:setQuads( quad1, ... )
  quad1 Quad The first Quad to use.
  ... Quad Additional Quads to use.
  ParticleSystem:setQuads( quads )
  quads table A table containing the Quads to use.