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. 💾 Memory Usage Reduction: Dramatically reduces entity processing overhead. 2. 💾 Memory Usage Reduction: Lowers strain on client-side rendering. 3. 💾 Memory Usage Reduction: Minimizes entity data transmission. 4. 💾 Memory Usage Reduction: 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.*