-- LUALOCALS < ---------------------------------------------------------
local include, nodecore, math
= include, nodecore, math
-- LUALOCALS > ---------------------------------------------------------

minetest.register_abm({
                label = "go smoke",
                interval = 15,
                chance = 1,
                nodenames = {"group:go_stone"},
                action = function(pos, node)
                    if not (node.param2 == 0) then
                        -- if smoke level is higher than 1, it can decay (lazy pseudoexponential decay)
                        if math.random() < (0.01 * (node.param2 - 1)) then
                            node.param2 = node.param2 - 1
                            minetest.swap_node(pos, node)
                        end

                        nodecore.smokefx(pos, 60, node.param2)
                    end
                end
        })