Utility mod that contains really useful code for quite a few mods.
This library provides:
- Simple, annotation-based content registration.
- For Blocks, HammerLib automagically registers BlockItem(s). If you want to disable BlockItem(s), let your block implement INoItemBlock, ICustomBlockItem, or ICreativeTabBlock, depending on what you want to achieve.
- For BlockEntity rendering, custom BlockEntityType constants may have additional @TileRenderer, pointing to an IBESR<Tile> class.
- Old-styled language parsers in format of "key=value", instead of JSONs (the file names and format is like in older game versions, but you need to call LanguageAdapter.registerMod(MOD_ID); inside your mod's constructor for it to register.
- Mod Source checks, that allow you to check if the mod was downloaded from adware/malware sites, AND warn users about it.
- Java-based recipe registration with a simple RegisterRecipesEvent, that runs on HammerLib.EVENT_BUS, allowing you, as a developer, to register crafting recipes like before, with code.
- Java-based tag population, with BuildTagsEvent, that runs on HammerLib.EVENT_BUS.
- Vastly simplified networking, using Network class, and IPacket + INBTPacket to allow for flawless and intuitive packet code development.
- Wrappers for block harvesting, that has been moved over to tags - BlockHarvestAdapter
- Field-based NBT serialization, so that you don't make a typo/forget to write serialization/deserialization code.
- Good old TileEntity wrappers, with TileSyncable and TileSyncableTickable, that allow synchronization of initial state, as well as registering properties that will be synchronized independently.
- ContainerAPI for BlockEntities, allowing to avoid MenuType<?> altogether (no need to register screen providers, menu types etc)
- ItemStack -> Color[] API, with TexturePixelGetter.getAllColors
- Annotation-based custom model loaders (@LoadUnbakedGeometry on IUnbakedGeometry<SELF>), avoids using the geometry loader class by making a common wrapper.
- ...And a whole lot more!
And a lot of rich features for mod devs.
Not enough? You can just view sources on 
GitHub, it's free!
Permissions:
- You can use this mod in your modpack.
- Yes, you are allowed to build a mod that requires Hammer Core, but not embeds it!
- You are not allowed to repost this mod to other sites without providing a CurseForge download link and my permission (
Zeitheron on Discord)
- You are not allowed to include this (or any other mods of DragonForge team) in your own mod. Building addons, however, is allowed, but a friendly PM would be good.
Note:
- The only supported version of minecraft is the latest one that this mod exists for. DO NOT ASK TO DOWNGRADE!
Want to discuss anything? Need help with APIs?
Join the discord server and follow Zeitheron on 
If you would like to support my work, you can become a patron via 
Patreon. 