hub / github.com/ViaVersion/ViaFabricPlus

github.com/ViaVersion/ViaFabricPlus @4.6.1

repository ↗ · DeepWiki ↗ · release 4.6.1 ↗ · + Follow

2,100 symbols 5,796 edges 561 files 107 documented · 5%

What it actually does AI analysis from the code graph — generated when you open this

loading…

README

ViaFabricPlus

Minecraft Fabric mod that allows you to join every Minecraft server version (Classic, Alpha, Beta, Release, April Fools, Bedrock)

ViaFabricPlus is a Minecraft mod for Fabric that builds on the ViaVersion plugin. It lets you connect to servers from almost every Minecraft version while fixing issues that the original project couldn't.

These fixes make older servers feel much closer to how they originally played, with improvements to movement, block and entity interactions, graphics, and more. In short, it recreates the classic Minecraft experience on today's client.

Important to know

Works only with the newest Minecraft client version
Runs only on Fabric. (There won't be a Forge or NeoForge version)
Multiplayer only – it does not affect singleplayer worlds
Clientside only – it does not run on Multiplayer servers
No cross-version resource packs – resource packs from older versions are not supported
If you want to play using older Minecraft clients, you should use the original ViaFabric instead. For a detailed comparison between the two projects, check out the ViaFabric vs ViaFabricPlus section.

How to use

Step-by-step installation and usage guide
Found a bug? Please report it on the issue tracker
Got questions? Join the ViaVersion Discord

Supported Server versions

Release (1.0.0–latest supported release*)
Beta (b1.0 – b1.8.1)
Alpha (a1.0.15 – a1.2.6)
Classic (c0.0.15 – c0.30 including CPE)
April Fools (3D Shareware, 20w14infinite, 25w14craftmine)
Combat Snapshots (Combat Test 8c)
Bedrock Edition 1.26.30 (Some features are missing)

*Support for new Mojang releases is usually added within a few days

For Developers & Contributors

Credits

Huge thanks to all our contributors who made this project possible.

Disclaimer

We cannot guarantee this mod will be allowed on every server. Some servers may treat it as suspicious and flag it with anti-cheat plugins. Use responsibly and at your own risk!

Extension points exported contracts — how you extend this code

IBlockStateHandler (Interface)

(no doc) [11 implementers]

src/main/java/com/viaversion/viafabricplus/features/block/connections/IBlockStateHandler.java

ViaFabricPlusLoadEntrypoint (Interface)

Optional Entrypoint called before the ViaFabricPlus loading cycle starts. This is needed to register a {@link LoadingCyc [2 …

viafabricplus-api/src/main/java/com/viaversion/viafabricplus/api/entrypoint/ViaFabricPlusLoadEntrypoint.java

IPlayerTabOverlay (Interface)

(no doc) [2 implementers]

viafabricplus-visuals/src/main/java/com/viaversion/viafabricplus/visuals/injection/access/r1_7_tab_list_tyle/IPlayerTabOverlay.java

ICrossCollisionBlock (Interface)

(no doc) [5 implementers]

src/main/java/com/viaversion/viafabricplus/injection/access/block/shape/ICrossCollisionBlock.java

ViaFabricPlusBase (Interface)

General API point for mods. Get instance via ViaFabricPlus#getImpl(). [1 implementers]

viafabricplus-api/src/main/java/com/viaversion/viafabricplus/api/ViaFabricPlusBase.java

IPlayerInfo (Interface)

(no doc) [2 implementers]

viafabricplus-visuals/src/main/java/com/viaversion/viafabricplus/visuals/injection/access/r1_7_tab_list_tyle/IPlayerInfo.java

IMouseKeyboardHandlers (Interface)

(no doc) [4 implementers]

src/main/java/com/viaversion/viafabricplus/injection/access/execute_inputs_sync/IMouseKeyboardHandlers.java

LoadingCycleCallback (Interface)

This event is fired in various loading stages of ViaFabricPlus. See LoadingCycle for more information.

viafabricplus-api/src/main/java/com/viaversion/viafabricplus/api/events/LoadingCycleCallback.java

Core symbols most depended-on inside this repo

getTargetVersion

called by 581

src/main/java/com/viaversion/viafabricplus/protocoltranslator/ProtocolTranslator.java

getValue

called by 127

viafabricplus-api/src/main/java/com/viaversion/viafabricplus/api/settings/AbstractSetting.java

add

called by 117

src/main/java/com/viaversion/viafabricplus/save/SaveManager.java

write

called by 83

src/main/java/com/viaversion/viafabricplus/save/AbstractSave.java

get

called by 71

src/main/java/com/viaversion/viafabricplus/screen/VFPScreen.java

setValue

called by 59

viafabricplus-api/src/main/java/com/viaversion/viafabricplus/api/settings/type/ModeSetting.java

get

called by 55

src/main/java/com/viaversion/viafabricplus/features/recipe/RecipeManager1_11_2.java

isEnabled

called by 48

viafabricplus-api/src/main/java/com/viaversion/viafabricplus/api/settings/type/VersionedBooleanSetting.java

Shape

Method 1,516

Class 544

Interface 35

Enum 3

Function 2

Languages

Java100%

Kotlin1%

Modules by API surface

src/main/java/com/viaversion/viafabricplus/injection/mixin/features/movement/sprinting_and_sneaking/MixinLocalPlayer.java31 symbols

src/main/java/com/viaversion/viafabricplus/ViaFabricPlusImpl.java26 symbols

viafabricplus-api/src/main/java/com/viaversion/viafabricplus/api/ViaFabricPlusBase.java25 symbols

src/main/java/com/viaversion/viafabricplus/injection/mixin/features/networking/packet_handling/MixinClientPacketListener.java23 symbols

src/main/java/com/viaversion/viafabricplus/injection/mixin/features/interaction/replace_block_item_use_logic/MixinMultiPlayerGameMode.java20 symbols

src/main/java/com/viaversion/viafabricplus/screen/VFPScreen.java19 symbols

src/main/java/com/viaversion/viafabricplus/injection/mixin/features/movement/collision/MixinEntity.java17 symbols

src/main/java/com/viaversion/viafabricplus/features/recipe/Recipes1_11_2.java17 symbols

src/main/java/com/viaversion/viafabricplus/screen/impl/realms/BedrockRealmsScreen.java16 symbols

src/main/java/com/viaversion/viafabricplus/screen/impl/PerServerVersionScreen.java16 symbols

viafabricplus-api/src/main/java/com/viaversion/viafabricplus/api/settings/AbstractSetting.java15 symbols

src/main/java/com/viaversion/viafabricplus/screen/impl/classic4j/ClassiCubeServerListScreen.java14 symbols

For agents

$ claude mcp add ViaFabricPlus \
  -- python -m otcore.mcp_server <graph>

⬇ download graph artifact