SuperMartijn642's Core Lib adds lots of basic implementations that allow for similar code between different Minecraft versions!
SuperMartijn642's Core Lib adds lots of basic implementations for guis, blocks, tile entities, and network packets that allow for similar code between Minecraft 1.12, 1.14, 1.15, 1.16, 1.17, 1.18, and 1.19!
FAQ
Can I use your mod in my modpack?
Yes, feel free to use my mod in your modpack
Discord
For future content, upcoming mods, and discussion, feel free to join the SuperMartijn642 discord server!
ABOUT THIS LISTING
This page describes SuperMartijn642's Core Lib by SuperMartijn642. The description and screenshots are the author's own, imported from their listing on Modrinth on 26 October 2026: https://modrinth.com/mod/supermartijn642s-core-lib
Mythiq.net hosts no files for it. The download button goes straight to the release file on cdn.modrinth.com, so you are downloading from the author's own host, not from a copy of ours.
The download count, rating and comments on this page start at zero and count Mythiq.net only. The source's own figures are not copied here — they measure a different site, and a number that cannot be checked against our own ledger is not worth printing.
Requirements
Game version
26.2
MOD LOADER
This release is built for Forge. A mod built for one loader will not load under another — Fabric mods do not run on Forge, and vice versa.
GAME VERSION
Built for Minecraft 26.2. Minecraft mods are tied to an exact version: a 1.21.4 build will refuse to load on 1.21.5.
THIS IS A LIBRARY
On its own it adds nothing you can see. It is here because other mods require it, and installing it is usually something another mod asked you to do.
DEPENDENCIES
Check the author's listing for required libraries before you start the game — a missing dependency shows up as a crash on launch, not as a warning.
Installation
1. Install Forge for the Minecraft version you play, if you have not already.
2. Download the .jar with the button on this page. Do not unzip it — a mod jar is installed as it is.
4. Launch the game with the Forge profile selected.
ON A SERVER
Anything that changes world generation or gameplay has to be installed on the server as well as on every client. Client-side visual and interface mods do not.
UPDATING
Replace the old .jar rather than adding the new one beside it. Two versions of the same mod in the folder is a crash on launch.
This release downloads from cdn.modrinth.com, not from us, so
there is no checksum to compare against. Scan the archive before you unpack it.
Version history
v1.1.25a-forge-mc26.2Latest
14 Oct 2026 · 594 KB via cdn.modrinth.com · 0 downloads Download
SuperMartijn642's Core Library 1.1.25a
- Account for changes in Forge 65.1.4
SuperMartijn642's Core Library 1.1.25
- Main widget for WidgetScreen and WidgetContainerScreen can now be offset rather than always centered
- Added Widget#right and #bottom
- Fixed ObjectBaseWidget#left and ObjectBaseContainerWidget#left returning width instead of left
SuperMartijn642's Core Library 1.1.24b
- TextComponents#block now lets the block create the text component rather than using its translation key
SuperMartijn642's Core Library 1.1.24a
- Fixed tag_populated resource condition always failing on first resource reload
SuperMartijn642's Core Library 1.1.24
- Fixed CustomSlot hover check area being 2 pixels too large
SuperMartijn642's Core Library 1.1.23a
- Fixed code for adding items to creative groups scaling with #total items #total groups, thus being extremely slow when there's many mods
SuperMartijn642's Core Library 1.1.23
- Added #getWidget method for WidgetScreen and WidgetContainerScreen
- Widget backgrounds are now rendered earlier, in the same way as vanilla menu background, for improved mod compatibility
- Fixed multipart conditions not being flattened correctly in BlockStateGenerator
SuperMartijn642's Core Library 1.1.22
- Added support for vanilla z rotation in BlockStateGenerator
- Added support for material force_translucent property in ModelGenerator
- Fixed ElementBuilder#shape having one parameter as an int instead of float
SuperMartijn642's Core Library 1.1.21b
- Fixed ClientRegistrationHandler item model overwrites not working due to accessing item components too early
SuperMartijn642's Core Library 1.1.21a
- Fixed crash on dedicated server when receiving a packet through PacketChannel
Update to Minecraft 26.2
Update to Minecraft 26.1
SuperMartijn642's Core Library 1.1.21
- Fixed client not being updated when BaseBlockEntity#writeClientData returns empty tag
SuperMartijn642's Core Library 1.1.20
- Added Widget#cursor to change the cursor when hovering a widget
- Added ScrollbarWidget for creating a configurable scrollbar
- Added ScissorWidet that restricts rendering and input handling of child widgets to its bounds
- Added CustomSlot for creating container slots
- Added AbstractButtonWidget#isClickable and AbstractButtonWidget#setActive
- Improved BaseWidget focus handling
- Fixed GuiGraphicsHelper#submitCustomRendering not respecting active scissor
- Fixed child widgets not getting unfocused when focused widget changes
- Fixed output from BlockStateGenerator, ModelGenerator, and TagGenerator not being consistent
SuperMartijn642's Core Library 1.1.19
- Added additional properties to BlockProperties to match vanilla
SuperMartijn642's Core Library 1.1.18
- Initial release of SuperMartijn642's Core Library for Minecraft 1.21.11
Off-site on cdn.modrinth.com —
no checksum, because we never held this file.
Link checked by our review team on 26 Oct 2026.
Tell us if something is wrong — a file that will not work, content taken from
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