Stage name: MoveIonStorms

If the number of ion storms exceeds IonStormActivity, the weakest storm dies.

Then, in Id order, storms...

  • pick new heading and speed
  • move
  • change size and voltage

Finally, storms merge if they fulfill the preconditions.

This is a testing version.
It may be incomplete, and have more bugs (or features) than the public live version at planetscentral.com.