Data Command Plus

This mod expands the capabilities of /data command, /loot
Only required on the Server side, client will need it for full syntax help!
Syntax of the command fits right into Vanilla syntax. see Commands/data on Minecraft Wiki
Always download the latest release to have access to all the features

To use with NeoForge/Forge

Follow instructions at: Sinytra Connector and Forgified Fabric API.
Please be aware that that port is not perfect and can crash your game.
In case it does crash, it should be reported to Sinytra Connector mod developer!

Squished tree: of /data command

… get (block <targetPos>|entity <target>|storage <target>|storageplayer <player>) [<path>] [<scale>]
… merge (block <targetPos>|entity <target>|storage <target>|storageplayer <player>) <nbt>
… modify (block <targetPos>|entity <target>|storage <target>|storageplayer <player>) <targetPath> (append|insert <index>|merge|prepend|set| operation)
- … from (block <sourcePos>|entity <source>|storage <source>|storageplayer <player>) [<sourcePath>]
- … concat (block <sourcePos>|entity <source>|storage <source>|storageplayer <player>) [<sourcePath>]
- … string (block <sourcePos>|entity <source>|storage <source>|storageplayer <player>) [<sourcePath>] [<start>] [<end>]
- … <(operation one of: =, +=, -=, *=, /=, %=, ^=, <, >)> <double value>
- … value <value>
… remove (block <targetPos>|entity <target>|storage <target>|storageplayer <player>) <path>

Squished tree: of /Loot command

/loot <TARGET> <SOURCE>
where
<TARGET> is:

give | insert | spawn | replace <targetPos>
insert entity <to entity> inventory <from entity>

<SOURCE> is:

fish | loot | kill | mine
inventory <entity> [MaxSlots]

<entity> is of type: player, cart, boat, villager, horse/donkey/llama, item, other living entity
[MaxSlots] is optional and will return up to n Slots (counting from 1), (-n) minus will return last n Slots
Equipment in order: Armor feet to head, mainhand, offhand, body, saddle.

Example, compacting inventory from one chest minecart into another one:

/loot insert entity @e[limit=1,type=chest_minecart,tag=1] inventory @e[limit=1,type=chest_minecart,tag=2]

Possibilities

Concatenate

String old + String new
List of Strings
Any Array
Multiple Nbt Values (selected by nbt selector)
Nbt Compound (only the top layer) as strings with escaped Quotes ("key":"value")
Return result: amount of elements concatenated

given path will be replaced with new string
p.s. if given path is a string and a string is concatenated, the result is concatenation of those two strings

Math Operation

performs math operation on the target value, target can be of any numeric type, Error will be thrown and success set to 0 when type is not numeric
^= stands for Power, can also be used to calculate Root
Targeted Path number TYPE will not change
for command syntax help install this mod client side
Return result and success: non zero on success

Storageplayer

store data per player in their own file /players/<UUID>_pds.dat
works only on players, any other entity will return an error
! Data stored in storageplayer will not be synced with clients, it's purely server side !

Loot ... inventory ...

loot enitiy's inventory into container (works with players, minecarts, boats, merchants, horses, items, and all living entities)
inserting into double chests is now possible (1up over regular loot command) ...
Return result: Slots returned

/execute as @e[type=item] run loot insert ~ ~-0.1 ~ inventory @s (will try to insert a copy of all dropped items from the world into inventory under your feet)
Examples of Loot ... inventory ... can be found in datapack Fafik77 Lib/inventory_manager

Delete Kill Command

In response to So I Added WAY Too Many Slimes to Minecraft -by Fundy
/deletekill <entities>
Deletes selected entities, no loot dropped, no events fired just gone
p.s. works grat on slimes

fafik77

Data Command Plus