MX Haptics

MX Haptics brings real haptic feedback to Minecraft on your Logitech MX Master 4 mouse. Every time you take damage, block an attack with your shield, run out of air, or interact with the world, the mouse vibrates with a configurable pattern and intensity. No mods, no reflexes, the mouse tells your hand what's happening.

Features

6 in-game events, each with independent on/off, pattern (0–15), intensity (0–100) and cooldown:

• Damage taken, enabled by default, strong feedback
• Shield block (melee and projectiles, including arrows), enabled
• Air bubble popped, enabled, subtle warning as you drown
• Block broken, disabled by default
• Block placed, disabled by default
• Hotbar slot change, disabled by default, very light tick

Configurable in-game (with Cloth Config + Mod Menu) or via mxhaptics.json.
Keybind "Test haptic vibration" for a one-press test any time.

/mxhaptics_test [pattern] [intensity] client command for manual testing.

Auto-reconnect with exponential backoff, if Logi Options+ isn't running the game plays normally and the mod tries again in the background.

Fully asynchronous, the bridge WebSocket never touches the game thread.
Cross-platform: same jar works on Windows and macOS.

Works on any server, including vanilla. Everything is client-side.

Delayed vibrations when the mouse is idle

If you keep the mouse completely still (for example while waiting underwater for air bubbles), some vibrations may arrive late, sometimes by a second or two. This is not caused by the mod: when the MX Master 4 isn't being moved it enters a low power state, and the wireless connection receives the haptic command with a delay. Events that happen while you're using the mouse, like scrolling through the hotbar, feel instant for the same reason. Logi Options+ doesn't currently offer a setting to change this, but moving the mouse slightly or using the Logi Bolt receiver instead of Bluetooth can help.

Requirements:

A Logitech MX Master 4 mouse
Logi Options+ installed and running
The HapticWeb plugin for Logi Options+, installable from the Logi Marketplace (default endpoint: wss://local.jmw.nz:41443/ws)

How to test the vibration

Keybind (one-click): Options → Controls → Key Binds → MX Haptics → "Test haptic vibration", assign a key, press it any time to feel a test vibration.

From chat: /mxhaptics_test 1 75 (or /mxhaptics_test ).

From the config screen: open Mod Menu → MX Haptics → toggle a "Test vibration" widget ON and click "Save Changes".

If you want to report a bug you can do it from:
GitHub

And if you want to support my work and the project feel free to drop a donation on:
Paypal

License
MIT - free to use, modify and redistribute.