public void setMobLimit(final int initialLimit, final int addPerPlayer, final int largestLimit) {
this.mobLimit =
world ->
Math.min(
largestLimit,
initialLimit + EntitySelector.players(world, area.toAABB()).size() * addPerPlayer);
}
@Override
public void tick(World world, NBTCompound nbt) {
if (++tickLimiter > tickRate) {
tickLimiter = 0;
List<EntityLiving> mobs = EntitySelector.mobs(world, area.toAABB());
if (mobs.size() >= mobLimit.applyAsInt(world)) return;
final Map<Class<? extends EntityLiving>, Integer> mobCounts = new HashMap<>(4);
final boolean isPeaceful = world.difficultySetting == EnumDifficulty.PEACEFUL;
for (int attempt = 0; attempt < attemptsPerTick; attempt++) {
final SpawnEntry<? extends EntityLiving> entry = spawnEntries.getRandomItem(world.rand);
final Class<? extends EntityLiving> mobClass = entry.getMobClass();
if (!isPeaceful || !entry.isHostile) {
int limit = mobClassLimit.get(mobClass);
if (limit == 0
|| mobCounts.computeIfAbsent(
mobClass,
cls ->
(int)
mobs.stream().filter(entity -> entity.getClass() == mobClass).count())
< limit) {
entry.trySpawn(world, attemptsPerMob);
}
}
}
}
}
/**
* Checks whether the area between two points is inside the structure and does not intersect any
* existing pieces.
*/
protected boolean canPlaceArea(Pos pos1, Pos pos2) {
final BoundingBox box = new BoundingBox(pos1, pos2);
return box.isInside(dungeon.boundingBox)
&& !generated.stream().anyMatch(inst -> inst.boundingBox.intersects(box));
}