First of all, the wavy terrain. Initially my problem was that the particles would move down too fast from the peak of a wave. The problem was with the ray sop.I was using the minimum distance attribute to make the particles follow the terrain. The problem with that is that it uses the normals of the terrain to determine the minimum distance,hence, the particles will kind of skip to the nearest normal referencing to the birth place of the particle. I was painting on the areas of where I wanted the particles to be birthed. The grid I painted on was already wavy and so the placement wasn't on even ground.
After much help from Mr Ron,Mr Ng and Mr Douglas, I eventually used the creep sop instead of the ray sop. With the creep sop however, it had all these crazy positions and I had to rotate certain rotations at 90 degrees. In the end, the particles move as expected, without speeding up or slowing down, which is the effect I wanted.
Particles follow the terrain
Instead of ray sop, I used the creep sop
Secondly, the spiralling effect. After letting Mr Ron and Mr Douglas see the spiralling effect I was working on, Mr Ron suggested an easier method,compared to the method I was using whereby I copy stamped boxes to make a spiral. Mr Ron instead used mainly just the popnet, using an orbit node and a few expressions to make the spiralling thing. It's so much easier and cleaner than what I was doing at first.
Spiral effect
I'll have to tinker with the new setup to get the desired effect.
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