mods/ENTITIES/mobs_mc/5_spawn_abm_check.lua

   1 function mobs:spawn_abm_check(pos, node, name)
   2         if (node.name == "air") then
   3                 return true
   4         elseif (node.name == "mcl_core:mycelium" or node.name == "mcl_core:mycelium_snow") and minetest.registered_entities[name].type == "monster" then
   5                 return false
   6         elseif minetest.get_item_group(node.name, "opaque") ~= 0 then
   7                 return false
   8         end
   9         return true
  10 end