⚠️ UPDATE NOTICE: This mod has been rewritten and currently ONLY supports version 1.2.0. For version 1.1.0, please check the GitHub repository. Versions below 1.1.0 are no longer supported.

🚀 How It Works & Core Features

The Logic System

Mobs Blocker intercepts every entity spawn attempt and checks rules in this specific order:

1. Specific Rules: Is there a rule for this exact Entity ID? (e.g., minecraft:zombie)
2. Preset Rules: If not, is there a rule for its Category? (e.g., monsters)
3. Global Rules: If not, is there a Global rule set?

Key Features

• Granular Control: Block mobs based on how they spawn (Natural, Spawners, Eggs, Commands).
• Smart Presets: Apply rules to entire categories (e.g., block all monsters or water_creatures).
• Global Settings: Apply a rule to every entity on the server instantly.
• In-Game Management: Full command system with auto-completion.
• Zero Lag: Uses optimized HashSet lookups and hooks into NeoForge events for minimal performance impact.
• Server-Side Only: Clients do not need to install this mod.

💻 Command Guide (Usage Examples)

All commands require OP Level 4.

1. Specific Mob Control (add)

Target a single entity type.

• Block Zombies completely:

  /spawnblocker add minecraft:zombie all
  

• Block Creepers from spawning naturally (but allow spawners/eggs):

  /spawnblocker add minecraft:creeper natural
  

• Allow Skeletons ONLY from Spawners (Inverse Mode):

  /spawnblocker add minecraft:skeleton !spawner
  

2. Category Presets (preset)

Apply rules to groups of mobs.
Available categories: monsters, creatures, ambient, water, misc.

• Block all Monsters from spawning naturally:

  /spawnblocker preset monsters natural
  

• Disable all ambient creatures (Bats, etc.):

  /spawnblocker preset ambient all
  

3. Global Settings (global)

Apply a fallback rule to the entire server.

• Disable Natural Spawning server-wide (Adventure mode style):

  /spawnblocker global natural
  

4. Management & Utilities

• Remove a rule:

  /spawnblocker remove minecraft:zombie
  /spawnblocker remove preset monsters
  

• List active rules:

  /spawnblocker list
  

• Reload Config (from disk):

  /spawnblocker reload
  

• Reset Everything (Wipe Config):

  /spawnblocker reset
  

{
  "minecraft:phantom": [
    "all"
  ],
  "preset:monsters": [
    "natural"
  ],
  "minecraft:zombie": [
    "!spawner"
  ],
  "global_settings": [
    "command"
  ]
}