Data Trader
A mod which adds a new trader to the game.
Defining the trades
File structure
The trader can receive an ID for a merchant offers "recipe". This is a list of single merchant offer
s. An example
file could look like this:
{
"Recipes": [
{
"buy": {
"item": "minecraft:diamond",
"count": 3
},
"buyB": {
"item": "minecraft:wooden_pickaxe"
},
"sell": {
"item": "minecraft:diamond_pickaxe",
"nbt": "{Damage:0,Enchantments:[{id:\"minecraft:efficiency\",lvl:2},{id:\"minecraft:unbreaking\", lvl:10}]}"
},
"uses": 10,
"maxUses": 50,
"rewardExp": false,
"xp": 0,
"priceMultiplier": 0.0,
"specialPrice": 0,
"demand": 0
}
]
}
This example includes only one merchant offer. The trader will sell the item in sell
.
The player needs to provide the item in buy
and buyB
to receive the item.
maxUses
is the amount of times the player can use this trade before the trader needs to restock.
If rewardExp
is true, the player will receive 3 to 6 xp points for each trade.
xp
if the amount of xp the trader receives. Since it's not leveling, it's useless here.
The priceMultiplier
calculates the price for the item count in buy
.
The specialPriceDiff
could increase or decrease it.
The demand
will also calculate the price for the item count in buy
.
The following values are required:
buy
sell
The default values are:
Name | Default value |
---|---|
buyB |
Air |
uses |
0 |
maxUses |
4 |
rewardExp |
false |
xp |
0 |
priceMultiplier |
0.0 |
specialPrice |
0 |
demand |
0 |
Where to put it in?
You use a data pack to provide these files. These are located at <modid>/merchant_offers/
. An example can be found
here.
How to use?
You spawn the trader using the /summon
command, or by using the spawn egg. After this, you use the command
/datatrader setOffer @e <modid>:<path>
to set the recipe. This can also be done by datapacks.
For a normal trader, I recommend setting NoAI
to true
.