Mob Mounting Control

A server-side Fabric mod for Minecraft 1.20.1 that controls which entities can mount vehicles (boats, minecarts, etc.) using configurable blacklists and whitelists.

Features

• Entity Blacklist/Whitelist Mode: Control which entities can mount vehicles using either blacklist or whitelist approach
• Vehicle Blacklist/Whitelist Mode: Control which vehicle types are affected by the mod using either blacklist or whitelist approach
• Dual-Layer Control: First filter vehicles by type, then check entity permissions for those vehicles
• Player Exception: Option to always allow players to mount vehicles regardless of other settings
• Logging: Optional logging of mounting attempts for debugging
• Runtime Configuration: JSON-based configuration file that can be edited while the server is running

Installation

1. Download the latest release from the releases page
2. Place the .jar file in your server's mods folder
3. Start your server - the mod will create a default configuration file
4. Edit the configuration file if needed and restart the server

Configuration

The mod creates a configuration file at config/mobmountingcontrol.json with the following options:

{
  "enableMod": true,
  "defaultAllowMounting": true,
  "playersAlwaysAllowed": true,
  "entityBlacklist": [
    "minecraft:zombie",
    "minecraft:skeleton",
    "minecraft:creeper",
    "minecraft:spider"
  ],
  "entityWhitelist": [
    "minecraft:villager",
    "minecraft:horse",
    "minecraft:donkey",
    "minecraft:mule"
  ],
  "defaultAllowVehicles": true,
  "vehicleBlacklist": [
    "minecraft:tnt_minecart"
  ],
  "vehicleWhitelist": [
    "minecraft:boat",
    "minecraft:chest_boat",
    "minecraft:minecart",
    "minecraft:chest_minecart",
    "minecraft:furnace_minecart",
    "minecraft:hopper_minecart"
  ],
  "logMountingAttempts": false
}

Configuration Options

• enableMod: Enable/disable the mod entirely
• defaultAllowMounting:
  • true = Entity blacklist mode (allow all entities except blacklisted)
  • false = Entity whitelist mode (deny all entities except whitelisted)
  • playersAlwaysAllowed: If true, players can always mount vehicles regardless of other settings
  • entityBlacklist: List of entity types that cannot mount vehicles (when in blacklist mode)
  • entityWhitelist: List of entity types that can mount vehicles (when in whitelist mode)
  • defaultAllowVehicles:
    • true = Vehicle blacklist mode (control all vehicles except blacklisted)
    • false = Vehicle whitelist mode (only control whitelisted vehicles)
  • vehicleBlacklist: List of vehicle types to exclude from control (when in blacklist mode)
  • vehicleWhitelist: List of vehicle types to control (when in whitelist mode)
  • logMountingAttempts: Enable logging of mounting attempts for debugging

How the Dual-Layer System Works

1. Vehicle Filter: First, the mod checks if the vehicle type should be controlled based on defaultAllowVehicles and the vehicle lists
2. Entity Permission: If the vehicle is controlled, then check if the entity has permission to mount based on defaultAllowMounting and the entity lists
3. Player Override: Players bypass entity permissions if playersAlwaysAllowed is true

Usage Examples

Prevent hostile mobs from mounting boats only

{
  "defaultAllowMounting": true,
  "entityBlacklist": [
    "minecraft:zombie",
    "minecraft:skeleton", 
    "minecraft:creeper",
    "minecraft:spider"
  ],
  "defaultAllowVehicles": false,
  "vehicleWhitelist": [
    "minecraft:boat",
    "minecraft:chest_boat"
  ]
}

Only allow specific mobs on any vehicle except TNT minecarts

{
  "defaultAllowMounting": false,
  "entityWhitelist": [
    "minecraft:villager",
    "minecraft:horse",
    "minecraft:cat"
  ],
  "defaultAllowVehicles": true,
  "vehicleBlacklist": [
    "minecraft:tnt_minecart"
  ]
}

Control all vehicles but only block zombies from everything

{
  "defaultAllowMounting": true,
  "entityBlacklist": [
    "minecraft:zombie"
  ],
  "defaultAllowVehicles": true,
  "vehicleBlacklist": []
}

Building from Source

1. Clone this repository
2. Run ./gradlew build
3. The built mod will be in build/libs/

Requirements

• Minecraft 1.20.1
• Fabric Loader 0.14.21 or higher
• Fabric API

License

This project is licensed under the MIT License - see the LICENSE file for details.

Support

If you encounter any issues or have feature requests, please open an issue on the GitHub repository.