往期推文全新看点（文中附带全新鸿蒙5.0全栈学习笔录）

✏️ 鸿蒙应用开发与鸿蒙系统开发哪个更有前景？

✏️ 嵌入式开发适不适合做鸿蒙南向开发？看完这篇你就了解了~

✏️ 对于大前端开发来说，转鸿蒙开发究竟是福还是祸？

✏️ 鸿蒙岗位需求突增！移动端、PC端、IoT到底该怎么选？

✏️ 市场巨变，移动开发行业即将迎来“第二春”?

✏️ 记录一场鸿蒙开发岗位面试经历~

✏️ 持续更新中……

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介绍

behaviortree ，是行为树 javascript 版实现，可以运行 node.js 和浏览器中，本库基于 behaviortree 原库 v2.1.0 版本进行验证。

下载安装

ohpm install behaviortree

使用说明

import { BehaviorTree } from "behaviortree";

示例

1.创建一个简单的任务

import { Task, SUCCESS } from "behaviortree";

const myTask = new Task({
  // (optional) this function is called directly before the run method
  // is called. It allows you to setup things before starting to run
  start: function (blackboard) {
    blackboard.isStarted = true;
  },

  // (optional) this function is called directly after the run method
  // is completed with either this.success() or this.fail(). It allows you to clean up
  // things, after you run the task.
  end: function (blackboard) {
    blackboard.isStarted = false;
  },

  // This is the meat of your task. The run method does everything you want it to do.
  run: function (blackboard) {
    return SUCCESS;
  },
});

方法：

• start - 在调用运行之前调用。但如果任务在以 this.running()结束后恢复,则不会
• end - 在调用运行后调用。但如果任务以 this.running()结束,则不会
• run - 包含你希望任务做的事情

2.创建序列

import { Sequence } from "behaviortree";

const mySequence = new Sequence({
  nodes: [
    // here comes in a list of nodes (Tasks, Sequences or Priorities)
    // as objects or as registered strings
  ],
});

3.创建优先级选择器

import { Selector } from "behaviortree";

const mySelector = new Selector({
  nodes: [
    // here comes in a list of nodes (Tasks, Sequences or Priorities)
    // as objects or as registered strings
  ],
});

4.创建随机选择器

import { Random } from "behaviortree";

const mySelector = new Random({
  nodes: [
    // here comes in a list of nodes (Tasks, Sequences or Priorities)
    // as objects or as registered strings
  ],
});

5.创建行为树实例

import { BehaviorTree } from "behaviortree";

var bTree = new BehaviorTree({
  tree: mySelector,
  blackboard: {},
});

6.遍历行为树

bTree.step();

接口说明

方法名	接口描述
Sequence	创建序列
Selector	创建优先级选择器
Random	创建随机选择器
BehaviorTree	创建行为树实例
step	遍历行为树