Minecraft – Why does the /execute as command not work

minecraft-commandsminecraft-java-edition

For my Minecraft map I have decided that when a player holds this sword he will gain speed 2 but it seems that it doesn't detect when I am holding the item.

This is the command I used:

/execute as @a[nbt={SelectedItem:[{Slot:0b,id:"minecraft:iron_sword",tag:{display:{Name:"{\"Kurikara\":\"\"}"}}}]}] run say hey

The command itself isn't highlighted red saying there is an error, but when it comes to actually detecting my item it never runs the command /say so i think something is wrong elsewhere in the command.

Best Answer

SelectedItem is not a list. Remove the square brackets ([]).
SelectedItem does not store a slot number, it's handled itself similarly to a slot. You can always check things like this easily with "/data get entity @s SelectedItem". If you really want to check if this specific item is selected AND in the first hotbar slot, then you can additionally check for "SelectedItemSlot:0" (yes, this is an integer, not a byte). But usually it's more convenient for the player if you don't have this restriction.

An alternative to what you're doing is called "Attributes". With those, you don't need any commands running permanently, you can just edit the player's "generic.movementSpeed" attribute directly with the sword.
Here is the wiki page for this: https://minecraft.gamepedia.com/Attribute (archive)

Related Solutions

Minecraft – the problem with this command

First make sure that the relevant objectives are set up:

/scoreboard objectives add hotbarlock dummy
/scoreboard objectives add inGame dummy
/scoreboard objectives add dropitem dummy

And that you have the correct scores:

/scoreboard players set @p hotbarlock 0
/scoreboard players set @p inGame 1

The first two commands should be fine, but there are a few errors with the third command:

You have missed a space between the first selector and ~.
You have written "typeItem" rather than "type=Item".
You have not given the full item ID, which is "minecraft:iron_sword".

Correct the third command to:

execute @e[score_inGame_min=1,score_hotbarlock=0] ~ ~ ~ scoreboard players set @e[type=Item,r=2] dropitem 1 {Item:{id:"minecraft:iron_sword",tag:{ench:[],display:{Name:"Vladimir",Lore:["Who names their sword that?!"]}}}}

After setting up the objectives properly, and correcting the third command, the system should work.

Minecraft – execute command testing logic (lightning Sword)

Ok, so it turns out, my logic works fine, unfortunately sometime between 1.10 and 1.12 nested execute command support was removed. pity. If anyone has a different way of doing this, please let me know. In the mean time, I'm going to try and figure out how to do this without nested execute commands...

Best Answer

Related Solutions

Minecraft – the problem with this command

Minecraft – execute command testing logic (lightning Sword)

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