K1ngDiZzY/MineMod

Custom NPC Trading

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#33 opened on Sep 30, 2025

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Researchenhancementhelp wanted

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Description

Create a trading system for NPCs. This should be a generic and customizable Trading feature (similar to Villagers, and Wandering Traders in Vanilla Minecraft), that any future Custom Mob/NPC can inherit.

This feature should be added into the Abstract Grunt class so that any NPCs that extend AbstractGrunt will also inherit the Trading functionality.

  • Similar trading system as Villagers or Wandering Traders.
  • Will use Berrys instead of Emeralds for currency when trading.
  • Can be a source of Devil Fruits.
  • Can be eventually used for Merchant

Sub issues will be created to manage all of the steps that will likely go into this. (This is wayy down the line still)

Edit: Added 7/29/2026

This will eventually be an interface that Abstract classes should pull from and "customize" to their specific NPC type.

Contributor guide

Research direction
Examine the AbstractGrunt class to understand its structure and how to add a generic trading system. Study vanilla Minecraft's villager trading to replicate a similar system using Berrys as currency.
Tech stack
java
Domain
game devbackend
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
JavaGit
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30