Wifi Hoppers

Overview

WifiHoppers replaces vanilla hopper logistics with wireless container links. Place a special hopper block, open its menu, upgrade stats with in-game currency, and route items to chests, furnaces, crafters, and more — without running hopper chains through the world.

The plugin is built for high-player-count survival servers: region-safe ticking on Folia, optional batch processing on Paper, player-chunk activity gating, and optional stacked-item support (WildStacker).

Core features

Wireless hoppers

• Place a Wifi Hopper item to register a managed hopper at that location.
• Break the block to recover a hopper item with saved levels, type, and link count on the item lore.
• Data is stored in a local SQLite database (bundled driver — no external DB setup).

Container linking

• Link hoppers to any inventory holder in the same world: chests, barrels, shulker boxes, furnaces, blast furnaces, smokers, campfires, crafters, etc.
• No physical hopper chain required — items teleport from the hopper inventory to linked targets within your configured distance.
• Per-link limits based on upgrade level (up to 36 link slots in the GUI, actual max links from upgrades).
• Reorder links (priority), rename links, and remove links from the menu.
• Link validation: same world, distance cap, duplicate prevention, max links.

Item suction (pickup)

• Pulls ground items into the hopper inventory on a configurable tick interval.
• Normal hopper: spherical radius around the hopper (upgradeable). Radius 0 = vanilla-style pickup from the block above only.
• Chunk hopper: sucks items from loaded chunks in a chunk-radius around the hopper (for large farms).
• Respects hopper inventory space and optional filter rules when links exist.
• WildStacker : correctly handles stacked item entities when plugin is installed.

Item transfer (output)

• Moves items from the hopper inventory into linked containers on a separate tick interval.
• Transfer amount per cycle is upgradeable (e.g. 8 → 320+ items per cycle on normal type).
• Supports furnaces (input + fuel slots only, never output), crafters (respects disabled slots), and normal inventories.

Advanced routing

• Insert by order (ON/OFF):
  • ON: first matching link gets items first.
  • OFF: distribute evenly across matching links.
• Delete non-filter items (ON/OFF):
  • ON: items that match no filter are voided (suction can collect everything; routing deletes rejects).
  • OFF: unmatched items stay in the hopper or go to unfiltered “overflow” links.
• Filter priority: STRICT filters → TYPE/NAMED → unfiltered overflow links.

Per-link filtering

Each link has its own filter GUI:

• Filter mode
  • WHITELIST or BLACKLIST
• Match type
  • TYPE (material), STRICT (exact item + NBT), NAMED (display name)
• TYPE filters
  • Click items in your inventory to add/remove materials
• Shulker filters
  • Empty/full shulker occupancy tokens (TYPE mode)
• STRICT filters
  • Full item serialization — exact stack matching
• Clear filters
  • One-click reset

Default new links: WHITELIST + TYPE.

Upgrades (GUI + economy)

Four upgrade tracks per hopper type, paid via Vault (if installed; free when Vault is absent):

1. Links — max simultaneous container links
2. Transfer — items moved per transfer cycle
3. Suction radius — pickup range (blocks or chunks depending on type)
4. Link distance — how far away targets can be

All costs and level values are defined in hoppers.yml (UpgradeableHoppers-style layout).

Active suction tuning

• Separate from max suction upgrade: set active pickup radius per hopper (increase/decrease in GUI).
• Lets players cap lag on busy farms without downgrading purchased upgrades.

Hopper types

Configurable in hoppers.yml:

• Normal
  • Block-radius item pickup, high link/transfer ceilings
• Chunk
  • Chunk-based pickup for large item farms; different upgrade curves

Give types with /hopper get [player] [amount] [type].

Controls

• Left-click hopper -> Open upgrade & link menu
• Right-click hopper -> Open vanilla hopper inventory
• Break hopper -> Drops hopper item with saved stats
• Link mode -> Menu → “Link to Containers” → left-click a container
• Rename link -> Shift + right-click link in menu → type name in chat (clear to reset)
• Reorder link -> Shift + left-click (up) / right-click (down)
• Remove link -> Press Q (drop) on link icon in menu

Commands permissions

wifihoppers.get

• /hopper get [player] [amount] [type]
  • Give wireless hopper item(s)
• /hopper types -List configured hopper types

wifihoppers.admin

• /hopper reload
  • Reload config + hoppers.yml + runtime
• /hopper import
  • Re-import from UpgradeableHoppers DB

Aliases: hoppers, h, uhopper, uhoppers, uh, uhr, wifihopper, wifihoppers, wh Legacy permissions: uhr.get, uhr.admin (same as above)

Configuration

config.yml

engine:
  tick-interval: 2          # Engine runs every N server ticks
  paper:
    scan-stride: 2          # Paper: hoppers processed per batch (round-robin)
    adaptive-stride: false  # Auto-adjust stride when many hoppers exist
    target-batch-size: 300  # Target hoppers per tick when adaptive is on
import:
  uh-db-path: plugins/UpgradeableHoppers/Data/database.db
  completed: false        # Set true after first successful UH import

hoppers.yml

• Defines hopper types, display names, tick intervals, and all upgrade levels (value + Vault cost).
• Structure mirrors UpgradeableHoppers for easy migration and balancing.

Dependencies

• Paper (or Folia) -> Yes
• Vault -> Optional
• WildStacker -> Optional

No dependency on Citizens, WorldEdit, or other plugins.

UpgradeableHoppers migration

• WifiHoppers can import existing UpgradeableHoppers data on first start (or via /hopper import):
• Reads per-world SQLite tables from the UH database path.
• Imports hopper locations, levels, links, filters (including strict items, shulker tokens, named filters).
• Can sync default hoppers.yml values from the old UH config on first install.
• Set import.completed: true in config.yml after a successful import to skip auto-import on future restarts.

Tip: Back up plugins/UpgradeableHoppers/ and your world before importing.

Performance & Folia

• Folia: Uses region schedulers per hopper — safe cross-region linking with graceful skip when a target chunk is on another region thread.
• Paper: Optional round-robin batching so hundreds of hoppers don’t all tick in one server tick (scan-stride, adaptive-stride).
• Activity gating: Hoppers only process when a player is within server simulation distance (reduces idle-world CPU).
• Separate suction/transfer timers per hopper type (ticks.transfer, ticks.suction in hoppers.yml).

Requirements

Paper or Folia Minecraft 1.21.11 / 26.1.2 (tested on Paper 26.1.2) Java 25+ (matches Paper 26.1.x)

Installation

1. Download WifiHoppers-x.x.x.jar.
2. Place in plugins/.
3. Restart the server.
4. Configure hoppers.yml (upgrade costs/values) and config.yml (engine + import path).
5. Optional: install Vault for economy upgrades.
6. Give hoppers: /hopper get 1 normal

If migrating from UpgradeableHoppers, ensure import.uh-db-path points at the old database.db before first start.

What’s included in the jar

• Plugin classes + default configs (config.yml, hoppers.yml)
• SQLite JDBC (bundled — no separate download)