Minecraft – How to stop Items from despawning

minecraft-commandsminecraft-java-edition

I searched up how to do this several times and I could only find ways to spawn items that cannot be picked up, and if it was a tutorial about stopping item despawning, it would still despawn after being picked up and dropped on the ground again.

I'm working on a game, fully with command blocks, and I have absolutely no idea how to stop items from despawning.

Could NBT tags be put on item entities too? So that when they get dropped, they still have the NBT tag?

Does anyone know how to stop them from despawning?

Best Answer

First, you can stop a specific item from despawning unless it is picked up and then dropped again by setting it's Age to -32768 with a command block.

Second, you can add arbitrary custom NBT data to an item, which will be preserved across drop-and-pickup cycles.

You can combine these two techniques to make specific items never despawn by running the command:

/execute as @e[type=item,nbt={Item:{tag:{noDespawn:1b}}}] run data merge entity @s {Age:-32768}

This would make any item given with a noDespawn:1b NBT tag (/give <player> <item>{noDespawn:1b}) never despawn, even if it is picked up and dropped again.

Related Solutions

Minecraft – Making crafted items usable in adventure mode

So if I understod it right you want tools to work in adventure mode for specific type of blocks. Well I think this might help you then. Just follow the steps.

First you make a scoreboard for the tool

/scoreboard objectives add (name) dummy

Then you place this command inside a repeating command block that is always active and unconditional facing up:
```
/scoreboard players set @a (scoreboard name) 2 {SelectedItem:{id:"minecraft:THE_TOOL"}}
```

Now over the repeating command block you place a chain block that is always active and unconditional and you want it to face upwards:

/scoreboard players set @a (scoreboard name) 1 {SelectedItem:{id:"minecraft:TOOL_NAME",tag:{display:{Name:"THE NAME YOU WANT THE TOOL TO BE CALLED"}}}}

And now the last command block. It will be a chain block and it will face up. it must be always active and unconditional:

/replaceitem entity @a[score_SCOREBOARD_NAME_min=2] slot.weapon.mainhand minecraft:TOOL_NAME 1 0 {HideFlags:8,display:{Name:"THE NAME THAT YOU CALLED YOUR TOOL"},CanDestroy:["sand","grass","gravel","dirt","mycelium","clay","farmland","grass_path","soul_sand","snow","snow_layer","FakeBlock"]}

Your pretty much done. Here is an example:
/scoreboard players set @a Diapick 2 {SelectedItem:{id:"minecraft:diamond_pickaxe"}}
/scoreboard players set @a Diapick 1 {SelectedItem:{id:"minecraft:diamond_pickaxe",tag:{display:{Name:"Diamond Pickaxe"}}}}
/replaceitem entity @a[score_Diapick_min=2] slot.weapon.mainhand minecraft:diamond_pickaxe 1 0 {HideFlags:8,display:{Name:"Diamond Pickaxe"},CanDestroy:["obsidian","ender_chest","anvil","coal_block","diamond_block","emerald_block","iron_block","gold_block","lapis_block","redstone_block","enchanting_table","iron_bars","iron_door","mob_spawner","dispenser","dropper","furnace","coal_ore","diamond_ore","emerald_ore","gold_ore","iron_ore","redstone_ore","lapis_ore","quartz_ore","end_stone","hopper","iron_trapdoor","brick_stairs","brick_block","cauldron","cobblestone","stone_stairs","cobblestone_wall","mossy_cobblestone","nether_brick","nether_brick_fence","nether_brick_stairs","stone_slab","andesite","deorite","granite","polished_andesite","polished_deorite","polished_granite","stone","stone_bricks","stone_brick_stairs","prismarine","prismarine_bricks","dark_prismarine","stained_hardened_terracotta","hardened_clay","quartz_block","quartz_stairs","sandstone","sandstone_stairs","brewing_stand","stone_pressure_plate","heavy_weighted_pressure_plate","light_weighted_pressure_plate","netherrack","rail","ice","packed_ice"]}

This is what it should look like

Minecraft – How to edit NBT tags of inventory items

Apparently, i was trying to use the wrong command, to do something the game doesn't allow. For what it's worth, i ended up using the /execute command to run data on dropped items. My thanks to Mr. Röling for his help.

Ex: execute as @e[type=item,scores={tool=3}] run data merge entity @s {Item:{tag:{CanDestroy:["coarse_dirt","gravel","sand","snow","snow_block"]}}}

Best Answer

Related Solutions

Minecraft – Making crafted items usable in adventure mode

Minecraft – How to edit NBT tags of inventory items

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