Point Blank HMI Compat

Client-side compatibility mod for Minecraft Fabric 1.21.11.

Problem

Good Craft 0.4.1 combines Vic's Point Blank 2.0.1, the Blue Archive Point Blank content pack, Hold My Items 5.1.1, and HMI-oriented resourcepacks. The first compatibility build only cancelled HMI Lua/model scripts for pointblank:*, but an in-game test showed no visible improvement.

HMI's first-person renderer redirect replaces the renderArmWithItem path that Point Blank hooks for its gun animations. HMI action-pose resourcepacks can also force an extra first-person hand pass while the gun is in the main hand.

What This Version Fixes

Fixed first-person HMI action-pose conflicts while holding Vic's Point Blank guns in the main hand.
VPB gun animations now take priority over HMI sneaking, swimming, climbing, and flying hand poses.
Prevents duplicated first-person hands while preserving aiming, shooting, and reloading.
Bypasses HMI's first-person render redirect for allowlisted items, defaulting to pointblank:*.
Suppresses HMI first-person action-pose rendering and HMI Lua/model scripts while a first-person player holds an allowlisted gun in the main hand.
Keeps offhand-only VPB behavior and non-VPB HMI item behavior intact.
Keeps optional debug diagnostics available through config.

It does not alter weapon mechanics, damage, fire/reload logic, recoil state, ammo, input, collision, or server-side behavior.

Tested Versions

Minecraft 1.21.11
Fabric Loader 0.19.2
Fabric API 0.141.4+1.21.11
Point Blank pointblank-fabric-1.21.11-2.0.1.jar
Hold My Items HMI 5.1.1 (1.21.11).jar
Blue Archive content pack bluearchive-ext v0.6.zip

Status

Version 0.3.0 has been validated in GoodCraft. Main-hand Point Blank guns no longer show duplicate HMI/action hands during sneaking, swimming, ladder climbing, flying, or gliding, and VPB aiming, shooting, and reloading remain intact.

Install

Put build/libs/vpb-hmi-compat-0.3.0.jar into the client/modpack mods folder.

The mod is client-only. It is safe for singleplayer or multiplayer clients and is not required on a server.

Config

On first client launch, the mod creates:

config/vpb_hmi_compat.json

Default config:

{ "debugLogging": false, "heldItemLogging": false, "mixinLogging": false, "bypassHmiFirstPersonRenderRedirect": true, "suppressHmiFirstPersonActionPoses": true, "bypassHmiLuaScripts": true, "bypassHmiModelScripts": true, "logIntervalTicks": 40, "bypassNamespaces": ["pointblank"], "bypassItemIds": [] }

To test a specific item id, add it to bypassItemIds, for example "pointblank:ba_ariusar". To collect diagnostics, temporarily set debugLogging, heldItemLogging, and mixinLogging to true.

How To Collect Logs

After launching the modpack and equipping a Point Blank or Blue Archive gun, enable debug logging if needed and check logs/latest.log for [VPB-HMI].

High-signal lines:

Point Blank HMI Compat initialized on client.
HMI present: true; Point Blank present: true
Mixin applied: mixin=com.joao2.vpbhmicompat.mixin.ItemInHandRendererHmiBypassMixin
MinecraftHeldItemDebugMixin reached Minecraft.tick()
Held item changed hand=main_hand item=pointblank:... bypass=true reason=namespace_allowlisted
Bypassing HMI first-person render redirect for item=pointblank:...
Suppressing HMI first-person action pose source=... mainHandItem=pointblank:...
Bypassing HMI Lua scripts for item=pointblank:...
Bypassing HMI model scripts for item=pointblank:...

If the gun logs as minecraft:... or another namespace, add the exact id to bypassItemIds and include the component patch in the bug report.