DropSweeper

An intelligent item-drop sweeper for Minecraft servers.

With the friendly "Sweeper Maid" (扫地姬) by your side, say goodbye to piles of cobblestone, sand, and arrows. ฅ^•ﻌ•^ฅ

What is this?

DropSweeper is a Fabric server-side mod that automatically collects dropped items on the ground into dustbins (virtual large chests with 54 slots each), giving you:

🧹 Auto sweep — runs on a configurable interval (default: every 10 minutes)
📦 Multiple dustbins — defaults to 1, configurable up to N; FIFO eviction across bins
🚫 White/Black lists — whitelist items are never touched; blacklist items are removed but not stored
🎯 Extra entity cleanup — arrows, experience orbs, etc.
⚠️ Overload warning — alerts OP when a chunk has too many items piling up
💬 Friendly announcements — countdown before sweep (ActionBar/Chat), clickable dustbin links on completion
🔧 Hot-reload config — no server restart needed
🔐 Granular permissions — control who can open dustbins vs. who can trigger sweeps

Commands

All commands are prefixed with /dropsweeper.

Sweep

Command	Permission	Description
`/dropsweeper items`	OP	Sweep current dimension
`/dropsweeper items all`	OP	Sweep all dimensions
`/dropsweeper items <world_id>`	OP	Sweep a specific dimension (Tab-completable)

Open dustbin

Command	Permission	Description
`/dropsweeper dustbin`	Everyone	Open dustbin 0
`/dropsweeper dustbin <index>`	Everyone	Open dustbin by index

After a sweep completes, the result message lists all non-empty dustbins as clickable links.

White/Black list management

/dropsweeper whitelist add <item_id>     # Add to whitelist (never swept)
/dropsweeper whitelist remove <item_id>  # Remove from whitelist
/dropsweeper whitelist list              # Show whitelist

/dropsweeper blacklist add <item_id>     # Add to blacklist (swept but not stored)
/dropsweeper blacklist remove <item_id>  # Remove from blacklist
/dropsweeper blacklist list              # Show blacklist

Wildcard modid:* is supported, e.g. minecraft:* matches all vanilla items.

Config

/dropsweeper config reload    # Hot-reload config/dropsweeper.json

Configuration

Location: config/dropsweeper.json (auto-generated on first run).

Common fields

{
  "sweepIntervalSeconds": 600,           // Auto-sweep interval in seconds (0 = disabled)
  "dustbinCount": 1,                     // Number of dustbins (54 slots each)
  "itemWhitelist": [                     // Whitelist: never swept
    "minecraft:nether_star",
    "minecraft:heavy_core"
  ],
  "itemBlacklist": [                     // Blacklist: swept but not stored
    "minecraft:cobblestone",
    "minecraft:sand",
    "minecraft:gravel"
  ],
  "extraEntityTypes": [                  // Extra entities to clean up
    "minecraft:arrow",
    "minecraft:spectral_arrow",
    "minecraft:experience_orb"
  ],
  "itemOverloadThreshold": 640,          // Per-chunk item count to trigger warning (0 = disabled)
  "permissionLevelDustbin": 0,           // Min. permission to open dustbin (0 = any player)
  "permissionLevelClean": 2,             // Min. permission to manually sweep
  "announcementChannel": {               // Announcement channels
    "long": "actionbar",                 // Long countdown (default 120/60/30s)
    "short": "chat",                     // Short countdown (≤3s)
    "complete": "chat"                   // Sweep completion
  }
}

Announcement channels

ActionBar — small text above the hotbar, auto-fades after 60 ticks (3 seconds), doesn't spam
Chat — bold message in chat, doesn't auto-fade

Default: long countdown uses ActionBar (unobtrusive), short countdown and completion use Chat (visible).

How much can dustbins hold?

Each dustbin has 54 slots (6 rows × 9 columns, equivalent to a large chest)
Default 1 → 54 slots
Set dustbinCount: 8 → 8 × 54 = 432 slots
When full, the oldest item is replaced by the new one (FIFO)

Data storage

Dustbin contents are stored in the world save: world/data/dimensions/minecraft/overworld/data/dropsweeper/dustbin.dat
Auto-saved, no manual action needed
Decreasing the number of dustbins will truncate the extras and may discard items in non-empty dustbins
Increasing the number preserves existing data

FAQ

Q: Where is the dustbin? How do I open it?
A: Run /dropsweeper dustbin (any player by default), or click the links in the sweep-completion message.

Q: How do I add custom items to the white/black list?
A: Use /dropsweeper whitelist add <item_id> (e.g. minecraft:diamond). You can also edit config/dropsweeper.json directly, then run /dropsweeper config reload.

Q: Do I have to restart the server after changing the config?
A: No. Run /dropsweeper config reload to apply changes immediately.

Q: Do clients need to install the mod?
A: On a multiplayer server, no — all sweep/command/storage logic runs server-side. Clients that install it just get a stub entrypoint.
For single-player or LAN play, you can install it on the client as well without affecting gameplay.

Q: Will it conflict with other sweep mods?
A: Yes. If two mods try to clean the same drops, you may get duplicate removals. Use one or the other.