Is there a method for getting number of item stacks?

[AccidentallyRhine]

Specifically dealing with node metadata, get_count() was close but I'm looking for the sum of itemstacks in a node, rather than the sum of items in a stack.

[duane]

Specifically dealing with node metadata, get_count() was close but I'm looking for the sum of itemstacks in a node, rather than the sum of items in a stack.

Wouldn't that be the count (#foo) of InvRef:get_list(listname), or do you want the total count of all objects of every type (which would just require looping through the table and getting the get_count of each)?

[AccidentallyRhine]

Just getting the count of stacks regardless of what they are or how many items they hold. The Invref page could really use some examples.

So get_list() returns an array? an integer?

[rubenwardy]

https://rubenwardy.com/minetest_modding ... -for-lists

[AccidentallyRhine]

I'm probably horribly misunderstanding things but this is the snippet I've been fighting:

Code: Select all

	allow_metadata_inventory_put = function(pos, listname, index, stack, player)
		if listname=="offer" then
			local meta=minetest.get_meta(pos)
			local inv=meta:get_inventory()
			if inv:get_size("listname") <= 3 then
				return stack:get_count()
			else
				mod.formspecs.dosomething.open(player, pos, true)
			end
		end
		return 0
	end,

The line with the less than/equal to operator get_size() returns always 0. Basically am just trying to reject item input after the node already has 3 stacks of anything.

[rubenwardy]

listname is a valid list. There are a few lists attached to the player, by default "main", "craft", and "craftpreview"

[AccidentallyRhine]

Thanks for the help rubenwardy. It would seem listname was referring to an empty list. The mod I'm tinkering on appears to store item stacks outside of the standard inventory convention so I've fallen back to using pairs() to iterate over the stacks and count them. What a mess.