![alt An entity stacked to almost maximum integer limit](https://media.forgecdn.net/attachments/988/553/mobstacker-1.png)

**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 ```bash # 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 ```bash # 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 ```bash # 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.*

MobStacker

Mobstacker 1.0.9

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