NoMonsInMyWorld

NoMonsInMyWorld is a lightweight but powerful server-side utility for Cobblemon that gives you precise, per-world control over both Pokémon spawning and riding. Whether you need to create a Pokémon-free hub, ban specific species from a dimension, or prevent players from riding legendaries in certain worlds, this mod provides a simple, config-driven solution.

Dependencies

• Fabric API
• Fabric Language Kotlin
• Cobblemon
• E-Utils

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Features

• Per-World Spawning Rules: Create unique spawning rules for each dimension. Completely disable spawning in your hub, allow only specific types in another, and leave the main world untouched.
• Advanced Spawn Filtering: Block Pokémon using simple species names (e.g., cobblemon:zubat) or use powerful conditions to filter by type (type=flying), rarity (legendary=true), or attribute (shiny=true).
• Per-World Riding Rules: Independently control which Pokémon can be ridden in each dimension. Completely disable riding in event worlds or blacklist specific powerful mounts from your survival worlds.
• Owned Pokémon Protection: A smart filter allows players to send out their own Pokémon, even in dimensions where wild spawns of that species are disabled.
• Live Reload: A simple command lets you apply configuration changes instantly without needing a server restart.
• 100% Server-Side: No installation is required for players to join your server.

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Commands

The mod is designed to be managed primarily through its configuration file, with a single command for convenience.

Command	Permission	Description
/nomonsinmyworld reload	nomonsinmyworld.reload	Reloads the config.json file from disk, applying any changes immediately.

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Configuration

NoMonsInMyWorld uses a single, easy-to-understand configuration file located at config/nomonsinmyworld/config.json. The entire configuration is managed within a worlds object, where you can add an entry for each dimension you want to control.

Example Configuration

{
  "version": "1.0.0",
  "worlds": {
    // Rules for the Overworld
    "minecraft:overworld": {
      "spawning": {
        "disallowedSpecies": ["cobblemon:rattata", "cobblemon:pidgey"],
        "exclusionConditions": ["type=ghost", "shiny=true"],
        "disableAll": false,
        "excludeOwnedPokemon": true
      },
      "riding": {
        "disallowedSpecies": ["cobblemon:charizard"],
        "exclusionConditions": ["legendary=true"],
        "disableAll": false,
        "excludeOwnedPokemon": false
      }
    },
    // Rules for a hub world (e.g., from another mod)
    "some_mod:hub_world": {
      "spawning": {
        "disableAll": true, // Master switch to block all wild spawns
        "excludeOwnedPokemon": true // Still allows players to send out their own Pokémon
      },
      "riding": {
        "disableAll": true // Master switch to block all riding
      }
    }
  }
}

Spawning Control (spawning section)

This section controls which wild Pokémon are allowed to spawn in a dimension.

Setting	Description
disableAll	The master switch. If true, no wild Pokémon will spawn in this world, and all other spawning rules are ignored.
disallowedSpecies	A list of Pokémon species to block by name. Example: ["cobblemon:zubat", "cobblemon:magikarp"].
exclusionConditions	(Powerful!) A list of conditions used to filter spawns. The syntax is key=value. This allows you to block entire categories of Pokémon. Examples: ["type=dragon"], ["legendary=true"], ["shiny=true"].
excludeOwnedPokemon	A critical safety feature. If true (default), the spawn-blocking rules will not apply to Pokémon being sent out of a Poké Ball by a player. This prevents the mod from interfering with a player's own team.

Riding Control (riding section)

This section controls which Pokémon players are allowed to mount and ride in a dimension.

Setting	Description
disableAll	The master switch. If true, players will be unable to mount or ride any Pokémon in this world.
disallowedSpecies	A list of specific Pokémon species that cannot be ridden. Perfect for banning certain powerful or large mounts. Example: ["cobblemon:rayquaza"].
exclusionConditions	A list of conditions to prevent riding. This is extremely useful for creating server-wide rules. Example: ["legendary=true"] would prevent anyone from riding a legendary Pokémon in this dimension.
excludeOwnedPokemon	This is typically set to false for riding, as the intention is to control the player's ability to mount their own Pokémon. If true, the riding rules would be ignored.