Dust effect generation

[potsmugen]

I noticed that there are some scenarios where Ikemen draws automatic dust effects while Mugen doesn't:

• If you use Kung Fu Throw (or some other throws) in the corner
  

• When hitting the ground after being knocked down
  

I did some tests trying to figure out when Mugen creates these dust effects, and here are the conditions I have so far:

• When a char enters state 52 by using physics = A
• When a char has all of these conditions:
  • Movetype = H
  • Pos Y = 0
  • Statetype = S or Statetype = C
  • Change in screen position (either velocity or posadd). This means that if chars are pushing into each other or the corner, they will not create dust effects, because their position is not changing even though they have velocities. Ikemen already recreates this

However I suppose that, ideally, these effects wouldn't be hardcoded. Not sure if they are in Ikemen.

[potsmugen]

Applies to both 0.98.2 and the latest build.