Changes

=== The LootPool Builder ===

=== The LootPool Builder ===

This is where you actually make a loottable (this is an explanation for a block loottable). If you have multiple blocks with similar loottables, making a general method could be a good idea. The method should return a <code>LootTable.Builder</code>. This builder can be made by using the <code>LootPool.lootPool()</code> method, but you still need to add attributes. You need a name for the pool, the amount you get and also "what" you get. The "what" can modified using functions and/or conditions (see [https://minecraft.fandom.com/wiki/Loot_table LootTables] for possible vanilla funtions and conditions). After having made the builder, you return <code>LootTable.lootTable().withPool(builder)</code>. An example of a "shulkerbox-like" block, copying its name, inventory and "energy" data to the block and restoring its contents when placed.

This is where you actually make a loottable. You start with a <code>LootPool.Builder</code> and add the necessary attributes to it.

* <code>.name</code> is used for the pool name.

* <code>.setRolls</code> is used for the amount.

 

An <code>ItemLootEntry</code> defines what is returned, and which functions and/or conditions are applied (see [https://minecraft.fandom.com/wiki/Loot_table Loot table] for the vanilla functions and conditions).

 

After all attributes have been added the <code>LootPool.Builder</code> can be used to make a <code>LootTable.Builder</code> of the proper <code>LootParameterSets</code>. This builder can then be added to the <code>lootTables</code> map made in the previous section (in the overwritten abstract method).

<syntaxhighlight lang="java">

<syntaxhighlight lang="java">

LootPool.Builder builder = LootPool.lootPool()

        LootPool.Builder builder = LootPool.lootPool()

                 .name(...)

                 .name(name)

                 .setRolls(...)

                 .setRolls(ConstantRange.exactly(1))

                 .add(ItemLootEntry.lootTableItem(...)

                 .add(ItemLootEntry.lootTableItem(block)

                         .apply(Function1)

                        .apply(CopyName.copyName(CopyName.Source.BLOCK_ENTITY))

                         .apply(Function2

                         .apply(CopyNbt.copyData(CopyNbt.Source.BLOCK_ENTITY)

                                .options(option1)

                                 .options(option2))

                                .copy("energy", "BlockEntityTag.energy", CopyNbt.Action.REPLACE))

                         .apply(SetContents.setContents()

                                 .withEntry(DynamicLootEntry.dynamicEntry(new ResourceLocation("minecraft", "contents"))))

                 );

                 );

         return LootTable.lootTable().withPool(builder).setParamSet(LootParameterSets.BLOCK);

         LootTable.lootTable().withPool(builder).setParamSet(...);

</syntaxhighlight>

</syntaxhighlight>

[[Category:Data Generation]]

[[Category:Data Generation]]