SimpleNPC

SimpleNPC 是一款极其轻量的 Minecraft 实体 NPC 插件，它唯一的功能就是右键配置过的实体时，执行一系列命令。你几乎不需要学习任何新的内容，也不需要花费时间调节配置文件，就能立刻掌握其使用方式。

本插件不依赖外部数据库，采用纯标签驱动架构。它不负责实体的生成或物理属性的修改，而是将交互逻辑直接储存在实体的 PDC 中。任何非玩家实体均可作为 NPC，数据与原版区块同步保存与销毁。

核心特性

• 无外部状态： 不使用 MySQL 或 SQLite。所有命令和行为数据直接存储在实体的 PDC 中。当实体被清除时，数据随之销毁，不会产生数据残留。

• 泛用实体支持： 推荐配合 1.21.9+ 原生的玩家模型 (minecraft:mannequin) 使用，同时也支持任何非玩家实体。只需通过命令添加 PDC 标签即可将其转换为 NPC。

• 交互防抖： 内置交互冷却机制，防止因网络延迟或连点导致的命令重复执行。

• 指令执行： * 支持 %player_name% 等基础变量，并兼容 PlaceholderAPI。

• 带有 player: 前缀的指令将以玩家身份执行，无前缀则默认以控制台身份执行。

• 技术规范： 基于 Paper API 1.21.11+ 与 Kotlin 编写。使用 Brigadier 构建命令树，通过 MiniMessage 处理文本格式化。

• 视觉附加功能 (计划中)： 计划引入 PacketEvents，通过发包实现特定玩家视角的皮肤镜像与目光追随功能。

快速上手

第一步：生成实体 使用原版命令或生成蛋召唤一个实体，并配置所需的属性（如无敌、无重力等）：

/summon minecraft:mannequin ~ ~ ~ {Invulnerable:1b,NoGravity:1b}

第二步：绑定命令 使用插件提供的选择器，向该实体注入需要触发的命令：

/npc add @n[type=mannequin] say 欢迎来到这里，%player_name%！
/npc add @n[type=mannequin] player:spawn

第三步：玩家交互 玩家右键点击该实体，系统将按顺序执行绑定的命令。

命令与权限

所有命令默认需要 pronpc.admin 权限。命令目标 <target> 支持 Minecraft 原版目标选择器。

注：目标选择器仅允许选择一个实体。

配置文件 (config.yml)

# NPC 交互全局冷却时间（单位：秒）
cooldown-seconds: 3.0

开发者参考

插件的底层数据结构如下：

• 命名空间 (Namespace): npc
• 核心键值: commands 对应类型 PersistentDataType.LIST.strings()
• 视觉扩展键值 (计划中): * mirror_skin 对应类型 PersistentDataType.BYTE
• look_at 对应类型 PersistentDataType.BYTE

Translated by AI，Sorry for possible grammar mistakes.

SimpleNPC

SimpleNPC is an extremely lightweight Minecraft entity NPC plugin. Its sole function is to execute a series of commands when a player right-clicks a configured entity. You needn't to learn much new things or spent lots of time configuring it to master its usage.

This plugin does not rely on any external database; it uses a purely tag-driven architecture. It does not handle entity spawning or modify physical attributes — instead, it stores interaction logic directly in the entity's PDC. Any non-player entity can serve as an NPC, and the data is saved and destroyed synchronously with vanilla chunks.

Core Features

• No External State: No MySQL or SQLite. All command and behavior data is stored directly in the entity's PDC. When the entity is removed, the data is destroyed alongside it, leaving no residual data.
• Universal Entity Support: Designed to work best with the native player model (minecraft:mannequin) introduced in 1.21.9+, but also supports any non-player entity. Simply add the PDC tag via a command to turn it into an NPC.
• Interaction Debounce: Built-in interaction cooldown mechanism prevents duplicate command execution caused by network latency or rapid clicking.
• Command Execution:
  • Supports basic variables like %player_name% and is compatible with PlaceholderAPI.
  • Commands prefixed with player: are executed as the player; commands without a prefix are executed as the console by default.
• Technical Specifications: Built on Paper API 1.21.11+ and written in Kotlin. Uses Brigadier for command tree construction and MiniMessage for text formatting.
• Planned Visual Additions: Plans to introduce PacketEvents to implement per-player skin mirroring and gaze-following features via packet manipulation.

Quick Start

Step 1: Spawn an entity
Use a vanilla command or a spawn egg to summon an entity and configure desired attributes (e.g., invulnerable, no gravity):

/summon minecraft:mannequin ~ ~ ~ {Invulnerable:1b,NoGravity:1b}

Step 2: Bind commands
Use the plugin's selectors to inject commands that should be triggered by the entity:

/npc add @n[type=mannequin] say Welcome, %player_name%!
/npc add @n[type=mannequin] player:spawn

Step 3: Player interaction
When a player right-clicks the entity, the system executes the bound commands in order.

Commands & Permissions

All commands require the pronpc.admin permission by default. The command target <target> supports Minecraft native target selectors.

Note: The target selector must match exactly one entity.

Configuration (config.yml)

# Global interaction cooldown for NPCs (in seconds)
cooldown-seconds: 3.0

Developer Reference

The underlying data structure of the plugin is as follows:

• Namespace: npc
• Core Key: commands — type PersistentDataType.LIST.strings()
• Planned Visual Extension Keys:
  • mirror_skin — type PersistentDataType.BYTE
  • look_at — type PersistentDataType.BYTE