xPaw/Catacomb-Snatch — comment on commit 193a14f09be9037cfd34d58b173783155d37e25f
File: src/com/mojang/mojam/entity/building/SpawnerEntity.java line 52
By Flet:

Hey, use the method countEntities() in my Level.java https://github.com/Flet/Catacomb-Snatch/blob/master/src/com/mojang/mojam/level/Level.java

Then it should be easy to limit to just Mobs:

if(level.countEntities(Mob.class) >= 1000)