public List<Discovery> getAvailablePolicies(Entity empire, Policy choice) {
return discoveries
.get(empire)
.done
.stream()
.filter(d -> d.groups.contains(choice.name()))
.collect(toList());
}
public static Set<Policy> getPolicies(Discovery d) {
Set<Policy> set = null;
for (String group : d.groups) {
Policy p = Policy.get(group);
if (p != null) {
if (set == null) set = EnumSet.of(p);
else set.add(p);
}
}
return set;
}