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Hasitem should exist on all versions and allow selection of data components

In Minecraft Bedrock edition, “Hasitem” is a target selector that selects players with certain amounts of an item in their inventory. This is incredibly useful for many things, like item shops and adventure maps. “Hasitem” allows detection of specific ranges of items as well. For example, you could select all players with fewer than 5 diamonds. 

Unfortunately, this is not in Java edition. While there are workarounds, there is no intuitive way to detect players with a range of items. The “NBT” selector can detect if the player has a specific item with specific data, but it cannot select a range of items. It can only detect if the player has a specific amount of an item in one stack. This does not work in most cases. For example, if the player had two stacks of 8 diamonds, and they were supposed to get selected for having more than 9, they would not get selected because they did not have a single stack with 9 items in it. Even in Bedrock, “Hasitem” does not allow selection based upon data components that an item has, limiting customizability.

My suggestion is to add “Hasitem” to Java as a target selector, and allow it to detect items with specific components within both versions. The format would follow a simple structure. Within square brackets, the first term is the string of the item being detected, with components given at the end the same way they are with the “/give” command. The second is a range of potential values. The two of these terms would be separated by a comma.

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    Registered User commented
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    I have some examples of what this would look like if it were added to help make discussing my point simpler.

    Someone could put these four commands behind a button to behave like a shop for an adventure map or minigame:

    /execute as @a[hasitem=[minecraft:diamond, 5..] run tag @s add enough_to_buy

    /give @a[tag=enough_to_buy] minecraft:diamond_sword[unbreakable={}]

    /clear @a[tag=enough_to_buy] minecraft:diamond 5

    /tag @a remove enough_to_buy

     

    When activated, it would give the tag “enough_to_buy” to any players with more than 5 diamonds. Then, it would give them an unbreakable diamond sword and take their 5 diamonds. The final command would remove their tag.

    In this case, the Hasitem selector would make things substantially easier. The addition of the component at the end of the item ID would make it more versatile in both versions.

     

    If this command was run every tick, it would give all players with more than 64 iron ingots named “Heavy Iron Ingot” slowness because of the weight.

    /effect @a[hasitem=[minecraft:iron_ingot[custom_name={“Heavy Iron Ingot”}], 64..] give slowness 1 1 true

    To make this command work in Bedrock edition, you could remove the “give” term in the command.

  • 2
    Registered User commented
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    Additional examples:

    @a[hasitem=[minecraft:diamond]]
    Selects all players with a diamond in their inventory, regardless of amount and data.

    @a[hasitem=![minecraft:diamond]]
    Selects all players without a single diamond in their inventory, regardless of data.

    @a[hasitem=[minecraft:diamond_sword[unbreakable={}]]]
    Selects all players with a diamond sword with the “unbreakable” data component. Other data components are ignored, including name, attack damage, and durability.

    @a[hasitem=![minecraft:diamond_sword[unbreakable={}]]]
    Selects all players without an unbreakable diamond sword. Players with breakable swords would be selected. Those who have unbreakable swords with different data would not be selected.

    @a[hasitem=[minecraft:diamond_sword, 2..]]
    Selects all players with multiple diamond swords.

    @a[hasitem=[minecraft:diamond_sword[unbreakable={}], 2..]]
    Selects all players with multiple unbreakable diamond swords. Players with one of each would not be counted, and players with multiple normal diamond swords would not be counted.

  • 2
    Registered User commented
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    Yes! This would be very useful for making chest UI shop systems, which lots of maps use.