Improve sneak pick items

sneak_pickup.lua

@@ -50,11 +50,28 @@ local function pick_dropped_items(player)
         local luaentity = object:get_luaentity()
         local itemstack = ItemStack(luaentity.itemstring)
 
-        if
+        if not luaentity._being_collected then
-            inv:room_for_item('main', itemstack)
+            -- Invoke global on_item_pickup callbacks.
-            and not luaentity._being_collected
+            -- for _, callback in ipairs(minetest.registered_on_item_pickups) do
-        then
+            --     local result = callback(itemstack, player, { type = 'object', ref = object })
-            inv:add_item('main', itemstack)
+
+            --     if result then
+            --         itemstack = ItemStack(result)
+            --     end
+            -- end
+
+            local leftover_stack = inv:add_item('main', itemstack)
+            local stack_count_prev = itemstack:get_count()
+            local stack_count_leftover = leftover_stack:get_count()
+
+            if leftover_stack and stack_count_prev ~= stack_count_leftover then
+                -- Collect item / Item fits in the inventory
+                local pos_obj = object:get_pos()
+
+                if leftover_stack ~= 0 then
+                    minetest.spawn_item(pos_obj, leftover_stack:to_string())
+                end
+
                 luaentity._being_collected = true
                 object:set_acceleration({ x = 0, y = 0, z = 0 })
                 object:set_velocity({ x = 0, y = 0, z = 0 })
@@ -68,8 +85,6 @@ local function pick_dropped_items(player)
                     collisionbox = { 0, 0, 0, 0, 0, 0 }
                 })
 
-            local pos_obj = object:get_pos()
-
                 object:move_to(vector.new(
                     (pos.x - pos_obj.x) + pos_obj.x,
                     (pos.y - pos_obj.y) + pos_obj.y + 1.25,
@@ -90,6 +105,7 @@ local function pick_dropped_items(player)
             end
         end
     end
+end
 
 minetest.register_on_joinplayer(function(player)
     local player_meta = player:get_meta()