Epic/mods/furniture/lighting.lua

local function particles_lantern(pos)
   minetest.add_particlespawner({
      amount = 48,
      time = 4,
      minpos = {x=pos.x - 0.25, y=pos.y, z=pos.z - 0.25},
      maxpos = {x=pos.x + 0.25, y=pos.y + 0.25, z=pos.z + 0.25},
      minvel = {x=-.3, y=-.03, z=-.3}, maxvel = {x=.3,  y=.05,  z=.3},
      minacc = {x=-.1, y=.02, z=-.1}, maxacc = {x=.1, y=.02, z=.1},
      minexptime = 1, maxexptime = 3,
      minsize = 1, maxsize = 2,
      collisiondetection = false,
      texture = 'furniture_lantern_particle.png',
      glow = 10,
   })
end

minetest.register_node('furniture:lantern_ceiling', {
   _doc_items_crafting = 'This is crafted in the Smithy Station.',
   description = 'Ceiling Lantern',
   drawtype = 'mesh',
   mesh = 'furniture_lantern.obj',
   tiles = {'furniture_lantern.png'},
   paramtype = 'light',
   light_source = 14,
   walkable = false,
   paramtype2 = 'facedir',
   selection_box = {
      type = 'fixed',
      fixed = {-.375, 0, -.375, .375, 0.5, .375},
      },
   collision_box = {
      type = 'fixed',
      fixed = {-.375, 0, -.375, .375, 0.5, .375},
      },
   groups = {oddly_breakable_by_hand = 2, cracky=3},
   on_rightclick = function(pos)
      particles_lantern(pos)
   end,
})

minetest.register_abm({
   label = 'Lantern effects',
   nodenames = {'furniture:lantern_ceiling'},
   interval = 13,
   chance = 7,
   action = function(pos, node)
      particles_lantern(pos)
      local objs = minetest.get_objects_inside_radius(pos, 4)
      for _, obj in pairs(objs) do
         if obj:is_player() then
            local name = obj:get_player_name()
            local hunger = tonumber(hbhunger.hunger[name]) + 6
            hbhunger.hunger[name] = math.min(30, hunger)
            hbhunger.set_hunger_raw(obj)
         end
      end
   end
})