Universe haveEveryPlanetAttack(Planet mine, Planets planetsToAttack) {
List<Planet> newPlanets = new ArrayList<Planet>();
List<Fleet> additionalFleets = new ArrayList<Fleet>();
for (Planet p : planetsToAttack.minus(mine).items) {
if (!p.isNeutral()) {
newPlanets.add(p.removeShips(p.numShips));
additionalFleets.add(p.attack(mine));
}
}
return new Universe(
planets.replace(new Planets(newPlanets)),
fleets.union(new Fleets(additionalFleets)),
turn,
reservations);
}
