Simple Generators

Simple Generators for Minecraft 1.21.1, the same as 3.3.1 for 1.20.1.

Requires NeoForge 21.1 (any build) and ValkyrieLib 3.2.1 or a newer 3.x. Worlds from 1.20.1 carry over: generators keep their fuel, fluids and energy.

Changes

• The Soul Generator burns every head through Minecraft's own list of them, minecraft:skulls, as 1.21's common tags have no heads.
• An item that's more than one fuel burns as the narrowest of them: Ice and Fire's dragon and wither bones, which it now lists among all bones too, give their own energy, not a plain bone's.
• The Soul Generator burns Ice and Fire's dragon and sea serpent scales through the lists Ice and Fire keeps them in now, and its amethyst dragon egg under its new name.
• The Simple Fluid Combustion Generator burns crude oil and oil, from mods such as PneumaticCraft and Ad Astra, and Immersive Engineering's high-power biodiesel.
• Shared tags follow 1.21's conventions: c: where they were forge: (c:gems/litherite, c:storage_blocks/mica), with 1.21's new names for some (c:stones, c:glass_blocks, c:cobblestones).
• Datapacks: data folders are singular from 1.21 (recipe/, loot_table/, tags/item/), so this mod's machine data is in data/<namespace>/recipe/, and a recipe's conditions are NeoForge's, "neoforge:conditions" with neoforge:item_exists, neoforge:mod_loaded and so on.