Store potion in blockdata

[BlockyPenguin 0]

Hi, I'm fairly new to modding, and I'd like to know if it's possible to store a potion's effect (e.g. slowness, invisibility, strength, etc) inside of some blockdata. If not, how else could I do this?

[Cadiboo 277]

What are you trying to do, from a players perspective?

[BlockyPenguin 0]

5 hours ago, Cadiboo said:

What are you trying to do, from a players perspective?

So, I'm looking to make a block that, when right-clicked with a potion, will store that potion's data (effect and length) in some blockdata, then when the player right clicks again with an empty hand, it gives them the correct effect for the correct amount of time. If that sounds too op, don't worry, it only has three uses

Edit: Or maybe I could use a String if that's possible?

labkit:potiondispensary[potion="speed",time="8:00",level=3]

 

Edited November 21 by BlockyPenguin

[diesieben07 6684]

Your block will need a TileEntity. Then you can store an EffectInstance in that tile entity. You can use EffectInstance#write(CompoundNBT) to store this effect in NBT.

[BlockyPenguin 0]

5 hours ago, diesieben07 said:

Your block will need a TileEntity. Then you can store an EffectInstance in that tile entity. You can use EffectInstance#write(CompoundNBT) to store this effect in NBT.

Cool, thx.

[BlockyPenguin 0]

Okay, so I've added this code to my block's constructor:
 

CompoundNBT nbt = new CompoundNBT();
EffectInstance potion = new EffectInstance(Effects.LUCK, 6000);
potion.write(nbt);

 

but if I run "/data get block <x> <y> <z>" ingame, it doesn't give me any info on the potion, just the x, y, z and id, so I'm guessing it isn't writing properly. Nothing seems to be amiss in the logs. Please forgive me if I'm missing something important here, this is my first time working with TileEntities.

[diesieben07 6684]

2 minutes ago, BlockyPenguin said:

Okay, so I've added this code to my block's constructor:

How is that at all related to what I told you to do?

[BlockyPenguin 0]

On 11/21/2019 at 8:10 AM, diesieben07 said:

You can use EffectInstance#write(CompoundNBT) to store this effect in NBT.

I created an EffectInstance and passed some CompoundNBT in the .write method.

[diesieben07 6684]

I can see that. But you create a blank NBT compount, write something to it and then just drop it on the ground.

You need to add a tile entity to your block.

[BlockyPenguin 0]

Oh, I've done that too, forgot to mention it, sorry. How would I write it to the tile entity then?

[diesieben07 6684]

You don't "write it to the tile entity". To store data in your tile entity you simply add whatever fields you want to the tile entity class and store the data there.

Then you override the methods TileEntity#write and TileEntity#read to serialize and deserialize your data to and from NBT.