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[1.10.2] Setting Block State Value from Tile Entity


Nomnomab

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I have a new issue haha, although not sure what to do about it.

 

Currently trying to save to my block a PART integer:

private int part;

And then when it gets read, it will set the Block's PART data:

public static final PropertyInteger PART = PropertyInteger.create("part", 0, 3);

To the correct part.

 

Currently it is throwing a NullPointer exception for grabbing the state from the block:

getWorld().setBlockState(pos, getWorld().getBlockState(pos).withProperty(BlockTanningRack.FACING, EnumFacing.NORTH).withProperty(BlockTanningRack.PART, part));

Probably doing something really bad here, haha. Any ideas?

 

Btw, I am trying to save my data and load it to a state since in the future I will have larger than 16 states for a multiblock, so I want to understand how to do this part of it :D 

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You should not store the part integer in the block.

Blocks are singletons. This means, that there is only 1 of each type, that exists in multiple locations when placed. You change the data in one block, you change the data in all blocks of that type.

 

Non-final information should be stored in the BlockState directly, or in a TileEntity.

 

You also have to override shouldRefresh in the TileEntity. By default, the tile is replaced with a new instance if the blockstate changes. Common fix is to return newBlockstate.getBlock() != oldBlockstate.getBlock().

 

Oh, and the more-than-16-states... Lookup IExtendedBlockState. It can hold more information than normal blockstates (so more than 16 possible states) but the additional data can not actively affect the world like normal blockstates. Extended blockstates are used mostly for storing information that affects rendering etc.

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Regular block states can hold more than 16 variants just fine.

You just can't encode all of that information in the metadata.

 

https://github.com/Draco18s/ReasonableRealism/blob/master/src/main/java/com/draco18s/farming/block/BlockTanner.java#L56

Each LEATHER_STATE is an emum corresponding to 3 values: NONE, RAW, TANNED

SALT_LEVEL is an integer ranging from 0 to 6.

FACING is a horizontal facing enum, 4 states

3 * 3 * 7 * 4 = 252

Edited by Draco18s

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