MobSpawnController

MobSpawnController is a lightweight Fabric / NeoForge /Forge mod that lets you control mob spawning behavior and attributes through commands or an intuitive in-game GUI. ## Features Spawn Control - Enable or disable spawning for any mob, per spawn type (NATURAL, SPAWNER, BREEDING, EVENT, etc.) - Fine-grained control: disable natural spawning while keeping spawner-based spawning, or vice versa - Works with all mods' mobs — if it's registered as an entity type, it can be controlled - Refactored spawn interception logic so rules are enforced before mobs actually spawn Natural Spawn Rules (New in 1.1.0) - Full InControl-style natural spawn condition system for each mob - Configure: spawn chance, height range, total/sky/block light, time of day, world day, moon phase, player distance, world-spawn distance, local difficulty, weather, difficulty, sky visibility, fluid type, slime chunk, dimensions, biomes, biome tags, seasons, structures, blocks below/at/above, dimension player count, nearby mob cap, and more - Blank or unset conditions are treated as unrestricted Season Compatibility (New) - Optional integration with Serene Seasons - Restrict natural spawns to specific sub-seasons - If Serene Seasons is not installed, season conditions are ignored and never block spawning Attribute Override - Modify any mob attribute (health, damage, speed, armor, knockback resistance, etc.) on a per-mob basis - Supports numeric and percentage-based attribute controls - Attribute overrides are applied when mobs finalize their spawn, and max health is resynchronized automatically In-Game GUI - Visual mob list with 3D entity preview - Search by mob ID or translated name - Filter by source mod, spawn status (enabled/disabled/partial), attribute modification status, and natural spawn configuration status - Tabbed editor for spawn rules, natural spawn conditions, and attributes - Structure picker, dimension/biome/block list editors, and more - Block editor supports manual entry, held block, targeted block, and block-below quick-add Commands - /mobspawncontroller — toggle spawn rules - /mobspawncontroller list [mob] — view current rules - /mobspawncontroller clear — reset rules - Short alias: /msc - Tab-completion for mob IDs and spawn types Storage - Rules are saved as JSON per world in data/mobspawncontroller/rules.json - Automatically loads on server start, saves on server stop Notes - All features from MobSpawnSwitch have been moved here. MobSpawnSwitch is discontinued and will not receive further updates. - The GUI requires the mod to be installed on the client. Commands and rule storage still work in a dedicated-server-only setup.