make titanium goggles wear out

depends.txt

@@ -1,4 +1,3 @@
 default
 3d_armor?
 more_monoids?
-terumet?

goggles.lua

@@ -1,4 +1,7 @@
 if minetest.global_exists("armor") and minetest.global_exists("more_monoids") then
+    local damage_period = 19
+    local damage_amount = 100
+
     armor:register_armor("titanium:sam_titanium", {
         description = "Night Vision Goggles",
         inventory_image = "sam_titanium.png",
@@ -18,7 +21,10 @@ if minetest.global_exists("armor") and minetest.global_exists("more_monoids") th
         damage_groups = {},
 
         on_equip = function(player, index, stack)
-            more_monoids.sunlight_monoid:add_change(player, 1, "titanium:goggles")
+            local wear = stack:get_wear()
+            if (65535 - wear) > damage_amount then
+                more_monoids.sunlight_monoid:add_change(player, 1, "titanium:goggles")
+            end
         end,
         on_unequip = function(player, index, stack)
             more_monoids.sunlight_monoid:del_change(player, "titanium:goggles")
@@ -34,7 +40,30 @@ if minetest.global_exists("armor") and minetest.global_exists("more_monoids") th
         }
     })
 
-    -- terumet.register_repairable_item
+    -- terumet.register_repairable_item -- can't use this here cuz of dependency loop
+
+    local timer = 0
+    minetest.register_globalstep(function(dtime)
+        timer = timer + dtime;
+        if timer >= damage_period then
+            timer = timer - damage_period
+            for _, player in ipairs(minetest.get_connected_players()) do
+                local player_name = player:get_player_name()
+                local armor_inv = minetest.get_inventory({type="detached", name=player_name.."_armor"})
+                for index = 1, 6 do
+                    local stack = armor_inv:get_stack("armor", index)
+                    if stack:get_name() == "titanium:sam_titanium" then
+                        local wear = stack:get_wear()
+                        if (65535 - wear) > damage_amount then
+                            armor:damage(player, index, stack, damage_amount)
+                        else
+                            more_monoids.sunlight_monoid:del_change(player, "titanium:goggles")
+                        end
+                    end
+                end
+            end
+        end
+    end)
 
 else
     minetest.register_craftitem("titanium:sam_titanium", {

mod.conf

@@ -1,3 +1,3 @@
 name=titanium
 depends=default
-optional_depends=3d_armor,more_monoids,terumet
+optional_depends=3d_armor,more_monoids