MobStacker

MobStacker is a performance Minecraft mod to optimize entity handling, addressing a common cause of performance issues in vanilla and modded environments. By intelligently "stacking" similar mobs in close proximity, MobStacker significantly reduces server load and enhances client-side performance without compromising gameplay mechanics.

> 💡 Note: MobStacker preserves all loot and mob properties within stacked entities. Named mobs (via name tags) are exempt from stacking to maintain uniqueness.

Key Benefits

1. 🚀 Server Performance Boost: Dramatically reduces entity processing overhead.
2. 📈 Enhanced Client FPS: Lowers strain on client-side rendering.
3. 🌐 Optimized Network Traffic: Minimizes entity data transmission.
4. 🎮 Cleaner Gameplay: Reduces visual clutter in mob-dense areas.
5. 💾 Memory Usage Reduction: Lowers overall memory footprint.

Performance Improvement

While actual performance gains vary based on server specifications, player count, and mod configurations, MobStacker can provide substantial improvements, especially in environments with:

• High mob density
• Numerous entity-adding mods
• Large, active player bases

> 🔗 Note: > - MobStacker has a built in configurable spawn cap module to reduce mob spawns per chunk.

Features

| Feature | Description | |---------|-------------| | 📦 Smart Stacking | Automatically combines identical mob types within a configurable radius | | 🔢 Customizable Stacks | Set preferred maximum stack sizes | | ❤️ Flexible Health Management | Configurable options for stack health and death mechanics | | 🚫 Selective Stacking | Ability to exclude specific entities or entire mods | | 🔪 Stack Splitting | Implemented separator item functionality for dividing stacks |

Configuration

| Option | Description | Default | |--------|-------------|---------| | killWholeStackOnDeath | Determines if entire stack dies when one mob is killed | false | | stackHealth | Combines health of stacked mobs when enabled | false | | maxMobStackSize | Maximum number of mobs in a single stack | 16 | | stackRadius | Radius within which mobs attempt to stack | 6.0 | | enableSeparator | Toggles use of separator item for stack splitting | false | | consumeSeparator | Determines if separator item is consumed on use | true | | separatorItem | Specifies the item used as a separator | "minecraft:diamond" | | enableAssimilator | Toggles use of assimilator item for stackable toggle | false | | consumeAssimilator | Determines if assimilator item is consumed on use | true | | assimilatorItem | Specifies the item used as a assimilator | "minecraft:emerald" | | ignoredEntities | List of entities excluded from stacking | [] | | ignoredMods | List of mod IDs whose entities are excluded from stacking | [] |

Commands

All commands require operator permissions (level 2) and are prefixed with /mobstacker.

Configuration Commands

# Toggle whole stack death
/mobstacker stackerConfig killWholeStackOnDeath [true|false]

# Toggle health stacking
/mobstacker stackerConfig stackHealth [true|false]

# Set maximum stack size
/mobstacker stackerConfig maxStackSize [value]

# Set stack radius
/mobstacker stackerConfig stackRadius [value]

# Toggle separator functionality
/mobstacker stackerConfig separator enableSeparator [true|false]

# Toggle separator consumption
/mobstacker stackerConfig separator consumeSeparator [true|false]

# Set separator item
/mobstacker stackerConfig separator separatorItem [item_id]

# Toggle assimilator functionality
/mobstacker stackerConfig assimilator enableAssimilator [true|false]

# Toggle assimilator consumption
/mobstacker stackerConfig assimilator consumeAssimilator [true|false]

# Set assimilator item
/mobstacker stackerConfig assimilator assimilatorItem [item_id]

Entity and Mod Management

# Ignore specific entity
/mobstacker ignore entity [entity_id]

# Ignore all entities from a mod
/mobstacker ignore mod [mod_id]

# Remove entity from ignore list
/mobstacker unignore entity [entity_id]

# Remove mod from ignore list
/mobstacker unignore mod [mod_id]

# Set stack size for specific entity
/mobstacker setStackSize [entity] [size]

NOTE: An entity can be given the tag {StackData: {CanStack:0b}} to prevent it from stacking.

Mob Cap Management

# Set mob cap for mob categories
/mobstacker mobCapConfig [options]

Additional Notes

• 🔄 Automatic stacking occurs when compatible mobs move to a new block.
• 👑 Boss entities receive special handling to preserve custom names and health bars.
• 🔌 API available for custom merging conditions, death handlers, and entity data modifiers.
• 📊 Stacked mobs display stack size in their name (e.g., "Zombie x5").
• 🐑🐷🧟 Compatible with various entity types: animals, monsters, and NPCs.

Report issues to the issue tracker on github.