diff --git a/locked.lua b/locked.lua
index 77118cf..1b91e14 100644
--- a/locked.lua
+++ b/locked.lua
@@ -41,6 +41,7 @@ end
   |   If <infotext> is not specified (or is nil), the infotext will be the
   |   base node's description prefixed by "Locked ".
   |
+  |   The ABM for the locked oven is defined in oven.lua.
   ]]
 local function create_locked ( name, infotext )
     local def = { }
@@ -143,6 +144,8 @@ local items = {
       "Nightstand" },
     { "oven",
       "Oven" },
+    { "oven_active",
+      "Oven (active)" }
 }
 
 for _,item in ipairs(items) do
diff --git a/oven.lua b/oven.lua
index 0a1262d..fd3ffe7 100644
--- a/oven.lua
+++ b/oven.lua
@@ -195,3 +195,104 @@ minetest.register_abm({
 		inv:set_stack("fuel", 1, stack)
 	end,
 })
+
+minetest.register_abm({
+	nodenames = {"homedecor:oven_locked","homedecor:oven_active_locked"},
+	interval = 1.0,
+	chance = 1,
+	action = function(pos, node, active_object_count, active_object_count_wider)
+		local meta = minetest.env:get_meta(pos)
+		for i, name in ipairs({
+				"fuel_totaltime",
+				"fuel_time",
+				"src_totaltime",
+				"src_time"
+		}) do
+			if meta:get_string(name) == "" then
+				meta:set_float(name, 0.0)
+			end
+		end
+
+		local inv = meta:get_inventory()
+
+		local srclist = inv:get_list("src")
+		local cooked = nil
+		
+		if srclist then
+			cooked = minetest.get_craft_result({method = "cooking", width = 1, items = srclist})
+		end
+		
+		local was_active = false
+		
+		if meta:get_float("fuel_time") < meta:get_float("fuel_totaltime") then
+			was_active = true
+			meta:set_float("fuel_time", meta:get_float("fuel_time") + 1)
+			meta:set_float("src_time", meta:get_float("src_time") + 1)
+			if cooked and cooked.item and meta:get_float("src_time") >= cooked.time then
+				-- check if there's room for output in "dst" list
+				if inv:room_for_item("dst",cooked.item) then
+					-- Put result in "dst" list
+					inv:add_item("dst", cooked.item)
+					-- take stuff from "src" list
+					srcstack = inv:get_stack("src", 1)
+					srcstack:take_item()
+					inv:set_stack("src", 1, srcstack)
+				else
+					print(S("Could not insert '%s'"):format(cooked.item:to_string()))
+				end
+				meta:set_string("src_time", 0)
+			end
+		end
+		
+		if meta:get_float("fuel_time") < meta:get_float("fuel_totaltime") then
+			local percent = math.floor(meta:get_float("fuel_time") /
+					meta:get_float("fuel_totaltime") * 100)
+			meta:set_string("infotext",S("Locked oven active: %d%%"):format(percent))
+			hacky_swap_node(pos,"homedecor:oven_active_locked")
+			meta:set_string("formspec",
+				"size[8,9]"..
+				"image[2,2;1,1;default_furnace_fire_bg.png^[lowpart:"..
+						(100-percent)..":default_furnace_fire_fg.png]"..
+				"list[current_name;fuel;2,3;1,1;]"..
+				"list[current_name;src;2,1;1,1;]"..
+				"list[current_name;dst;5,1;2,2;]"..
+				"list[current_player;main;0,5;8,4;]")
+			return
+		end
+
+		local fuel = nil
+		local cooked = nil
+		local fuellist = inv:get_list("fuel")
+		local srclist = inv:get_list("src")
+		
+		if srclist then
+			cooked = minetest.get_craft_result({method = "cooking", width = 1, items = srclist})
+		end
+		if fuellist then
+			fuel = minetest.get_craft_result({method = "fuel", width = 1, items = fuellist})
+		end
+
+		if fuel.time <= 0 then
+			meta:set_string("infotext",S("Locked oven out of fuel"))
+			hacky_swap_node(pos,"homedecor:oven_locked")
+			meta:set_string("formspec", default.oven_inactive_formspec)
+			return
+		end
+
+		if cooked.item:is_empty() then
+			if was_active then
+				meta:set_string("infotext",S("Locked oven is empty"))
+				hacky_swap_node(pos,"homedecor:oven_locked")
+				meta:set_string("formspec", default.oven_inactive_formspec)
+			end
+			return
+		end
+
+		meta:set_string("fuel_totaltime", fuel.time)
+		meta:set_string("fuel_time", 0)
+		
+		local stack = inv:get_stack("fuel", 1)
+		stack:take_item()
+		inv:set_stack("fuel", 1, stack)
+	end,
+})