How to count total items on the ground

Question

Items on the ground clump together in stacks, so getting the number of entities doesn't give me the number of items there are. Is there a way to count the number of items instead of the number of item entities?

Answer 1

First you need a scoreboard to store the amount of items per entity into:

/scoreboard objectives add count dummy

Then you can easily transfer the stack size of every item entity into their "count" scoreboard like this:

/execute as @e[type=item] store result score @s count run data get entity @s Item.Count

If you want to do this only for a certain type of item, you can filter that as well:

/execute as @e[type=item,nbt={Item:{id:"minecraft:stone"}}] store result score @s count run data get entity @s Item.Count

Then you just need to add all those scores up to a shared score, for example yours:

/scoreboard players operation @s count += @e[type=item] count

Of course if you want to do this multiple times, you have to reset your score before the next repetition:

/scoreboard players reset @s count