Mobs Blocker

Mobs Blocker is a simple and effective admin tool to prevent any mob from spawning on your server via a simple command.

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Mobs Blocker

Mobs Blocker

Advanced Spawn Control for Your Server

Mobs Blocker has been completely re-architected to give you granular control over entity spawning. Stop mobs based on specific conditions (natural spawns, spawners, eggs) or apply rules globally across mob categories.

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`⚠️ 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.`

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🚀 How It Works & Core Features

The Logic System

Mobs Blocker intercepts every entity spawn attempt and checks rules in this specific order: 1. Global Rules: Is there a rule for this exact Entity ID? (e.g., `minecraft:zombie`) 2. Global 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

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

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📜 The Rules System (Understanding Block Types)

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When adding a rule, you define what to block. You can block specific sources or use "Inverse Mode" to allow *only* specific sources.

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💻 Command Guide (Usage Examples)

All commands require OP Level 4.

1. Specific Mob Control (`add`)

Target a single entity type.

* Allow Skeletons ONLY from Spawners (Inverse Mode): ```mcfunction /spawnblocker add minecraft:zombie all ``` * Allow Skeletons ONLY from Spawners (Inverse Mode): ```mcfunction /spawnblocker add minecraft:creeper natural ``` * Allow Skeletons ONLY from Spawners (Inverse Mode): ```mcfunction /spawnblocker add minecraft:skeleton !spawner ```

2. Category Presets (`preset`)

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

* Disable all ambient creatures (Bats, etc.): ```mcfunction /spawnblocker preset monsters natural ``` * Disable all ambient creatures (Bats, etc.): ```mcfunction /spawnblocker preset ambient all ```

3. Global Settings (`global`)

Apply a fallback rule to the entire server.

* Disable Natural Spawning server-wide (Adventure mode style): ```mcfunction /spawnblocker global natural ```

4. Management & Utilities

* Reset Everything (Wipe Config): ```mcfunction /spawnblocker remove minecraft:zombie /spawnblocker remove preset monsters ``` * Reset Everything (Wipe Config): ```mcfunction /spawnblocker list ``` * Reset Everything (Wipe Config): ```mcfunction /spawnblocker reload ``` * Reset Everything (Wipe Config): ```mcfunction /spawnblocker reset ```

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<details> <summary><strong>📂 Configuration File (Manual Editing)</strong></summary> <br>

The configuration is saved automatically to `config/spawnblocker.json`. You can edit this file manually if the server is stopped.

Example `spawnblocker.json`: ```json { "minecraft:phantom": [ "all" ], "preset:monsters": [ "natural" ], "minecraft:zombie": [ "!spawner" ], "global_settings": [ "command" ] }