VillagersTradingPlus

VillagerTradingPlus allows you to fully customize villager trading for your world.

Add, replace or delete the trades of any villager, change the currency, gate trades behind conditions and reprice them, all from a datapack.

Versions: 1. 20. 1, 1. 21. 1, 1. 21. 8

Loader: Fabric, Neoforge, Forge

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## What this is

VillagerTradingPlus is a library. On its own it adds no villagers, blocks or items: it replaces the machinery behind villager trading so that mods and datapacks can define trades in JSON.

Install it if a mod asks for it, or if you want to rewrite villager trading in your own pack. [VillagersPlus](https://modrinth.com/mod/villagersplus) is the reference mod built on top of it.

## What you can do with it

Add, delete or overwrite trades for every villager profession, the vanilla ones included. Change the currency from emeralds to any item you like. Set the amount, max usages, villager experience and price behaviour of each trade. Gate trades behind conditions: biome, dimension, weather, time of day, moon phase, gamerule, job site block or a config flag. Fourteen trade types, from a plain item sale to weighted pools, structure maps and enchanted books drawn from a weighted list you define. Merge multiple datapacks that modify the same villager, instead of letting the last one win. Customize the wandering trader the same way, with its own common and rare tiers.

## Configuration

`config/villagertradingplus/villagertradingplus-1. 0-config.json5`

These apply to every trade the library builds, no matter which mod or datapack defined it.

| Option | Default | What it does | | --- | --- | --- | | `trade_offers_per_level` | 2 | Max new trades a villager gains per level. | | `trade_offers_wandering_trader` | 5 | Max trades the wandering trader offers. | | `trade_price_multiplier_scale` | 1. 0 | Scales how strongly prices swing from demand and reputation. `0. 0` freezes both. Does not change a trade's starting price. | | `trade_cost_scale` | 1. 0 | Multiplies the base cost of every trade (first input slot only). `2. 0` doubles all prices. Result is clamped to 1 .. one stack. | | `enable_conditional_trades` | true | Whether condition-gated trades are actually checked. `false` makes every trade always appear. | | `enable_time_of_day_pricing` | false | Randomly nudges a trade's cost based on the in-game time it is unlocked. The price is locked in at unlock and does not keep changing. | | `time_of_day_price_variance` | 0. 15 | How far that nudge can go, as a fraction of the cost. Only used when the option above is on. |

### Trading screen controls

All three are off by default. When on, any player can use them, so they are meant for creative building and testing rather than survival servers.

| Option | Default | What it does | | --- | --- | --- | | `allow_trade_reroll` | false | Buttons to re-roll a villager's or wandering trader's trades, all at once or one level at a time. | | `allow_set_villager_level` | false | A control to set a villager's level (1-5) and regenerate its trades. Wandering traders have no levels and ignore it. | | `allow_view_all_trades` | false | A button that opens a read-only catalog panel listing every trade a villager could roll at a chosen level, with weights, chances and conditions. |

## Making a datapack

Trade files go into a datapack under your own namespace. Three folders are read:

| Folder | What it does | | --- | --- | | `data//default_villager_trades/.json` | Replaces a profession's trades outright. | | `data//villager_trades/.json` | Adds to a profession's trades. | | `data//wandering_trader_trades/.json` | Wandering trader trades. |

A profession file names the profession and holds five tier arrays:

```json { "profession": "minecraft:butcher", "trades": { "novice": [], "apprentice": [], "journeyman": [], "expert": [], "master": [] } } ```

Every snippet below is a single trade object that goes inside one of those five arrays.

_Notice: the vanilla trades aren't in JSON form yet, so replacing those means writing out the tiers you want to keep._

## Fields every trade type accepts

These are left out of the examples below to keep them short: