-- Makes pollution spawn around certain blocks.png

function pollute(node, freuqency)
    minetest.register_abm({
        label = "Pollution spawning around" .. node,
        nodenames = "air",
        neighbours = node,
        interval = frequency,
        chance = 0.95,
        action = function(pos, node, active_object_count, active_object_count_wider)
            --while minetest.get_node("air") ~= true then
            --    local pos = {x = pos.x, y = pos.y + 1, z = pos.z}
            --end
            local pos = {x = pos.x, y = pos.y + 1, z = pos.z}
            minetest.set_node(pos, {name = "air_pollution:pollution_1"})
        end ,
    })
end

pollute("default:furnace_active", 2)