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.
`⚠️ 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.
📜 The Rules System (Understanding Block Types)
When adding a rule, you define what to block. You can block specific sources or use "Inverse Mode" to allow *only* specific sources.
| Rule Keyword | Effect | | :--- | :--- | | `all` | Blocks Inverse spawns for this target. | | `natural` | Blocks natural spawns (darkness, biome generation). | | `spawner` | Blocks mob spawners (dungeons, trial spawners). | | `egg` | Blocks spawn eggs and dispensers. | | `command` | Blocks `/summon` or command block spawns. | | `!natural` | Inverse: Blocks everything *EXCEPT* natural spawns. | | `!spawner` | Inverse: Blocks everything *EXCEPT* spawners. | | `!command` | Inverse: Blocks everything *EXCEPT* commands. |
💻 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 ```
📂 Configuration File (Manual Editing)
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" ] }
