This commit is contained in:
gongxh
2025-06-04 23:10:59 +08:00
commit 0d9f048f39
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# 文件
.DS_Store
package-lock.json
# 文件夹
.vscode/
node_modules/
dist/
build/

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# 文件夹
node_modules/
libs/
build/
src/

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发布版本
```bash
npm publish --otp <code>
```
删除指定版本
```bash
npm unpublish kunpocc-behaviortree@1.0.23 --otp <code>
```

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README.md Normal file
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## 行为树
> 行为树是一种强大的 AI 决策系统,用于实现复杂的游戏 AI 行为。
#### 基本概念
1. 节点状态
```typescript
enum Status {
SUCCESS, // 成功
FAILURE, // 失败
RUNNING // 运行中
}
```
2. 节点类型
- **动作节点 (Action)**:执行具体行为的叶子节点
- **组合节点 (Composite)**:控制子节点执行顺序的节点
- **条件节点 (Condition)**:判断条件的节点
- **装饰节点 (Decorator)**:修饰其他节点行为的节点
#### 使用示例
```typescript
import {
BehaviorTree,
Sequence,
Selector,
Parallel,
Success,
Failure,
WaitTime,
Agent,
Blackboard
} from 'kunpocc-behaviortree';
// 1. 创建行为树
const tree = new BehaviorTree(
new Sequence( // 顺序节点:按顺序执行所有子节点
new WaitTime(2), // 等待2秒
new Selector( // 选择节点:选择一个可执行的子节点
new Success(() => {
console.log("执行成功动作");
}),
new Failure(() => {
console.log("执行失败动作");
})
)
)
);
// 2. 创建代理和黑板
const agent = new Agent(); // AI代理
const blackboard = new Blackboard(); // 共享数据黑板
// 3. 执行行为树
tree.tick(agent, blackboard);
```
#### 常用节点
1. 组合节点
```typescript
// 顺序节点:按顺序执行所有子节点,直到遇到失败或运行中的节点
new Sequence(childNode1, childNode2, childNode3);
// 选择节点:选择第一个成功或运行中的子节点
new Selector(childNode1, childNode2, childNode3);
// 并行节点:同时执行所有子节点
new Parallel(childNode1, childNode2, childNode3);
// 记忆顺序节点:记住上次执行的位置
new MemSequence(childNode1, childNode2, childNode3);
// 记忆选择节点:记住上次执行的位置
new MemSelector(childNode1, childNode2, childNode3);
// 随机选择节点:随机选择一个子节点执行
new RandomSelector(childNode1, childNode2, childNode3);
```
2. 动作节点
```typescript
// 成功节点
new Success(() => {
// 执行动作
});
// 失败节点
new Failure(() => {
// 执行动作
});
// 运行中节点
new Running(() => {
// 持续执行的动作
});
// 等待节点
new WaitTime(2); // 等待2秒
new WaitTicks(5); // 等待5个tick
```
3. 使用黑板共享数据
```typescript
// 在节点中使用黑板
class CustomAction extends Action {
tick(ticker: Ticker): Status {
// 获取数据
const data = ticker.blackboard.get("key");
// 设置数据
ticker.blackboard.set("key", "value");
return Status.SUCCESS;
}
}
```
#### 注意事项
1. 节点状态说明:
- `SUCCESS`:节点执行成功
- `FAILURE`:节点执行失败
- `RUNNING`:节点正在执行中
2. 组合节点特性:
- `Sequence`:所有子节点返回 SUCCESS 才返回 SUCCESS
- `Selector`:任一子节点返回 SUCCESS 就返回 SUCCESS
- `Parallel`:并行执行所有子节点
- `MemSequence/MemSelector`:会记住上次执行位置
3. 性能优化:
- 使用黑板共享数据,避免重复计算
- 合理使用记忆节点,减少重复执行
- 控制行为树的深度,避免过于复杂

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{
"name": "kunpocc-behaviortree",
"version": "0.0.1",
"description": "行为树",
"main": "./dist/kunpocc-behaviortree.cjs",
"module": "./dist/kunpocc-behaviortree.mjs",
"types": "./dist/kunpocc-behaviortree.d.ts",
"exports": {
".": {
"require": "./dist/kunpocc-behaviortree.cjs",
"import": "./dist/kunpocc-behaviortree.mjs",
"types": "./dist/kunpocc-behaviortree.d.ts",
"default": "./dist/kunpocc-behaviortree.cjs"
},
"./min": {
"require": "./dist/kunpocc-behaviortree.min.cjs",
"import": "./dist/kunpocc-behaviortree.min.mjs"
}
},
"scripts": {
"clean": "rm -rf dist",
"build": "npm run clean && rollup -c rollup.config.mjs"
},
"files": [
"dist/kunpocc-behaviortree.cjs",
"dist/kunpocc-behaviortree.mjs",
"dist/kunpocc-behaviortree.min.cjs",
"dist/kunpocc-behaviortree.min.mjs",
"dist/kunpocc-behaviortree.d.ts",
"libs/lib.ali.api.d.ts",
"libs/lib.bytedance.api.d.ts",
"libs/lib.wx.api.d.ts"
],
"author": "gongxh",
"license": "ISC",
"repository": {
"type": "gitlab",
"url": "https://github.com/Gongxh0901/kunpolibrary"
},
"publishConfig": {
"registry": "https://registry.npmjs.org/"
},
"devDependencies": {
"@rollup/plugin-terser": "^0.4.4",
"@rollup/plugin-typescript": "^12.1.2",
"@types/lodash": "^4.17.13",
"@types/node": "^22.10.2",
"rollup": "^4.28.1",
"rollup-plugin-dts": "^6.1.1",
"ts-node": "^10.9.2",
"tslib": "^2.6.2"
}
}

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import terser from '@rollup/plugin-terser';
import typescript from '@rollup/plugin-typescript';
import dts from 'rollup-plugin-dts';
export default [
{
// 生成未压缩的 JS 文件
input: 'src/kunpocc-behaviortree.ts',
external: ['cc', 'fairygui-cc'],
output: [
{
file: 'dist/kunpocc-behaviortree.mjs',
format: 'esm',
name: 'kunpocc-behaviortree'
},
{
file: 'dist/kunpocc-behaviortree.cjs',
format: 'cjs',
name: 'kunpocc-behaviortree'
}
],
plugins: [
typescript({
tsconfig: './tsconfig.json',
importHelpers: false,
compilerOptions: {
target: "es6",
module: "es6",
experimentalDecorators: true, // 启用ES装饰器。
strict: true,
strictNullChecks: false,
moduleResolution: "Node",
skipLibCheck: true,
esModuleInterop: true,
}
})
]
},
{
// 生成压缩的 JS 文件
input: 'src/kunpocc-behaviortree.ts',
external: ['cc', 'fairygui-cc'],
output: [
{
file: 'dist/kunpocc-behaviortree.min.mjs',
format: 'esm',
name: 'kunpocc-behaviortree'
},
{
file: 'dist/kunpocc-behaviortree.min.cjs',
format: 'cjs',
name: 'kunpocc-behaviortree'
}
],
plugins: [
typescript({
tsconfig: './tsconfig.json',
importHelpers: false,
compilerOptions: {
target: "es6",
module: "es6",
experimentalDecorators: true, // 启用ES装饰器。
strict: true,
strictNullChecks: false,
moduleResolution: "Node",
skipLibCheck: true,
esModuleInterop: true,
}
}),
terser()
]
},
{
// 生成声明文件的配置
input: 'src/kunpocc-behaviortree.ts',
output: {
file: 'dist/kunpocc-behaviortree.d.ts',
format: 'es'
},
plugins: [dts({
compilerOptions: {
stripInternal: true
}
})]
}
];

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import { BehaviorTree } from "./BehaviorTree";
import { Blackboard } from "./Blackboard";
import { Ticker } from "./Ticker";
/** 代理 */
export class Agent {
/** 行为树 */
public tree: BehaviorTree;
/** 黑板 */
public blackboard: Blackboard;
/** 更新器 */
public ticker: Ticker;
/**
* constructor
* @param subject // 主体
* @param tree 行为树
*/
constructor(subject: any, tree: BehaviorTree) {
this.tree = tree;
this.blackboard = new Blackboard();
this.ticker = new Ticker(subject, this.blackboard, tree);
}
/**
* 执行
*/
public tick(): void {
this.tree.tick(this, this.blackboard, this.ticker);
if (this.blackboard.interrupt) {
this.blackboard.interrupt = false;
let ticker = this.ticker;
ticker.openNodes.length = 0;
ticker.nodeCount = 0;
this.blackboard.clear();
}
}
/**
* 打断行为树,重新开始执行(如果当前在节点中,下一帧才会清理)
*/
public interruptBTree(): void {
if (!this.blackboard.interruptDefend) {
this.blackboard.interrupt = true;
}
}
}

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import { Status } from "../header";
import { Ticker } from "../Ticker";
import { BaseNode } from "./BaseNode";
/**
* 动作节点
* 没有子节点
*/
export abstract class Action extends BaseNode {
constructor() {
super();
}
}
/**
* 失败节点(无子节点)
* 直接返回FAILURE
*/
export class Failure extends Action {
/** 执行函数 @internal */
private _func: () => void;
constructor(func: () => void) {
super();
this._func = func;
}
/**
* 执行
* @param {Ticker} ticker
* @returns {Status}
*/
public tick(ticker: Ticker): Status {
this._func();
return Status.FAILURE;
}
}
/**
* 逻辑节点,一直执行 (无子节点)
* 直接返回RUNING
*/
export class Running extends Action {
/** 执行函数 @internal */
private _func: () => void;
constructor(func: () => void) {
super();
this._func = func;
}
/**
* 执行
* @param {Ticker} ticker
* @returns {Status}
*/
public tick(ticker: Ticker): Status {
this._func();
return Status.RUNNING;
}
}
/**
* 成功节点 无子节点
* 直接返回SUCCESS
*/
export class Success extends Action {
/** 执行函数 @internal */
private _func: () => void;
constructor(func: () => void) {
super();
this._func = func;
}
/**
* 执行
* @param {Ticker} ticker
* @returns {Status}
*/
public tick(ticker: Ticker): Status {
this._func();
return Status.SUCCESS;
}
}
/**
* 次数等待节点(无子节点)
* 次数内返回RUNING
* 超次返回SUCCESS
*/
export class WaitTicks extends Action {
/** 最大次数 @internal */
private _maxTicks: number;
/** 经过的次数 @internal */
private _elapsedTicks: number;
constructor(maxTicks: number = 0) {
super();
this._maxTicks = maxTicks;
this._elapsedTicks = 0;
}
/**
* 打开
* @param {Ticker} ticker
*/
public open(ticker: Ticker): void {
this._elapsedTicks = 0;
}
/**
* 执行
* @param {Ticker} ticker
* @returns {Status}
*/
public tick(ticker: Ticker): Status {
if (++this._elapsedTicks >= this._maxTicks) {
this._elapsedTicks = 0;
return Status.SUCCESS;
}
return Status.RUNNING;
}
}
/**
* 时间等待节点(无子节点)
* 时间到后返回SUCCESS否则返回RUNING
*/
export class WaitTime extends Action {
/** 等待时间(毫秒 ms) @internal */
private _duration: number;
constructor(duration: number = 0) {
super();
this._duration = duration * 1000;
}
/**
* 打开
* @param {Ticker} ticker
*/
public open(ticker: Ticker): void {
let startTime = new Date().getTime();
ticker.blackboard.set("startTime", startTime, ticker.tree.id, this.id);
}
/**
* 执行
* @param {Ticker} ticker
* @returns {Status}
*/
public tick(ticker: Ticker): Status {
let currTime = new Date().getTime();
let startTime = ticker.blackboard.get("startTime", ticker.tree.id, this.id);
if (currTime - startTime >= this._duration) {
return Status.SUCCESS;
}
return Status.RUNNING;
}
}
/**
* 行为树防止被打断节点
* 直接返回 SUCCESS
* 和 InterruptDefendCancel 必须成对出现
*/
export class InterruptDefend extends Action {
/**
* 执行
* @param {Ticker} ticker
* @returns {Status}
*/
public tick(ticker: Ticker): Status {
ticker.blackboard.interruptDefend = true;
return Status.SUCCESS;
}
}
/**
* 行为树被打断取消节点
* 直接返回 SUCCESS
* 和 InterruptDefend 必须成对出现
*/
export class InterruptDefendCancel extends Action {
/**
* 执行
* @param {Ticker} ticker
* @returns {Status}
*/
public tick(ticker: Ticker): Status {
ticker.blackboard.interruptDefend = false;
return Status.SUCCESS;
}
}

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import { createUUID, Status } from "../header";
import { Ticker } from "../Ticker";
/**
* 基础节点
* 所有节点全部继承自 BaseNode
*/
export abstract class BaseNode {
/** 唯一标识 */
public id: string;
/** 子节点 */
public children: BaseNode[];
/**
* 创建
* @param children 子节点列表
*/
constructor(children?: BaseNode[]) {
this.id = createUUID();
this.children = [];
if (!children) {
return;
}
for (let i = 0; i < children.length; i++) {
this.children.push(children[i]);
}
}
/**
* 执行节点
* @param ticker 更新器
* @returns {Status} 状态
*/
public _execute(ticker: Ticker): Status {
/* ENTER */
this._enter(ticker);
if (!ticker.blackboard.get("isOpen", ticker.tree.id, this.id)) {
this._open(ticker);
}
let status = this._tick(ticker);
if (status !== Status.RUNNING) {
this._close(ticker);
}
this._exit(ticker);
return status;
}
/**
* 进入节点
* @param ticker 更新器
* @internal
*/
public _enter(ticker: Ticker): void {
ticker.enterNode(this);
this.enter(ticker);
}
/**
* 打开节点
* @param ticker 更新器
* @internal
*/
public _open(ticker: Ticker): void {
ticker.openNode(this);
ticker.blackboard.set("isOpen", true, ticker.tree.id, this.id);
this.open(ticker);
}
/**
* 更新节点
* @param ticker 更新器
* @internal
*/
public _tick(ticker: Ticker): Status {
ticker.tickNode(this);
return this.tick(ticker);
}
/**
* 关闭节点
* @param ticker 更新器
* @internal
*/
public _close(ticker: Ticker): void {
ticker.closeNode(this);
ticker.blackboard.set("isOpen", false, ticker.tree.id, this.id);
this.close(ticker);
}
/**
* 退出节点
* @param ticker 更新器
* @internal
*/
public _exit(ticker: Ticker): void {
ticker.exitNode(this);
this.exit(ticker);
}
enter(ticker: Ticker): void {
}
open(ticker: Ticker): void {
}
close(ticker: Ticker): void {
}
exit(ticker: Ticker): void {
}
abstract tick(ticker: Ticker): Status;
}

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import { Status } from "../header";
import { Ticker } from "../Ticker";
import { BaseNode } from "./BaseNode";
/**
* 可以包含多个节点的集合装饰器基类
*
*/
export abstract class Composite extends BaseNode {
constructor(...children: BaseNode[]) {
super(children);
}
}
/**
* 记忆选择节点
* 选择不为 FAILURE 的节点
* 任意一个Child Node返回不为 FAILURE, 本Node向自己的Parent Node也返回Child Node状态
*/
export class MemSelector extends Composite {
/**
* 打开
* @param {Ticker} ticker
*/
public open(ticker: Ticker): void {
super.open(ticker);
ticker.blackboard.set("runningChild", 0, ticker.tree.id, this.id);
}
/**
* 执行
* @param {Ticker} ticker
* @returns {Status}
*/
public tick(ticker: Ticker): Status {
let childIndex = ticker.blackboard.get("runningChild", ticker.tree.id, this.id) as number;
for (let i = childIndex; i < this.children.length; i++) {
let status = this.children[i]._execute(ticker);
if (status !== Status.FAILURE) {
if (status === Status.RUNNING) {
ticker.blackboard.set("runningChild", i, ticker.tree.id, this.id);
}
return status;
}
}
return Status.FAILURE;
}
}
/**
* 记忆顺序节点
* 如果上次执行到 RUNING 的节点, 下次进入节点后, 直接从 RUNING 节点开始
* 遇到 RUNING 或者 FAILURE 停止迭代
* 任意一个Child Node返回不为 SUCCESS, 本Node向自己的Parent Node也返回Child Node状态
* 所有节点都返回 SUCCESS, 本节点才返回 SUCCESS
*/
export class MemSequence extends Composite {
/**
* 打开
* @param {Ticker} ticker
*/
public open(ticker: Ticker): void {
super.open(ticker);
ticker.blackboard.set("runningChild", 0, ticker.tree.id, this.id);
}
/**
* 执行
* @param {Ticker} ticker
* @returns {Status}
*/
public tick(ticker: Ticker): Status {
let childIndex = ticker.blackboard.get("runningChild", ticker.tree.id, this.id) as number;
for (let i = childIndex; i < this.children.length; i++) {
let status = this.children[i]._execute(ticker);
if (status !== Status.SUCCESS) {
if (status === Status.RUNNING) {
ticker.blackboard.set("runningChild", i, ticker.tree.id, this.id);
}
return status;
}
}
return Status.SUCCESS;
}
}
/**
* 随机选择节点
* 从Child Node中随机选择一个执行
*/
export class RandomSelector extends Composite {
/**
* 执行
* @param {Ticker} ticker
* @returns {Status}
*/
public tick(ticker: Ticker): Status {
let childIndex = (Math.random() * this.children.length) | 0;
let child = this.children[childIndex];
let status = child._execute(ticker);
return status;
}
}
/**
* 选择节点,选择不为 FAILURE 的节点
* 当执行本类型Node时它将从begin到end迭代执行自己的Child Node
* 如遇到一个Child Node执行后返回 SUCCESS 或者 RUNING那停止迭代本Node向自己的Parent Node也返回 SUCCESS 或 RUNING
*/
export class Selector extends Composite {
/**
* 执行
* @param {Ticker} ticker
* @returns {Status}
*/
public tick(ticker: Ticker): Status {
for (let i = 0; i < this.children.length; i++) {
let status = this.children[i]._execute(ticker);
if (status !== Status.FAILURE) {
return status;
}
}
return Status.FAILURE;
}
}
/**
* 顺序节点
* 当执行本类型Node时它将从begin到end迭代执行自己的Child Node
* 遇到 FAILURE 或 RUNING, 那停止迭代返回FAILURE 或 RUNING
* 所有节点都返回 SUCCESS, 本节点才返回 SUCCESS
*/
export class Sequence extends Composite {
/**
* 执行
* @param {Ticker} ticker
* @returns {Status}
*/
public tick(ticker: Ticker): Status {
for (let i = 0; i < this.children.length; i++) {
let status = this.children[i]._execute(ticker);
if (status !== Status.SUCCESS) {
return status;
}
}
return Status.SUCCESS;
}
}
/**
* 并行节点 每次进入全部重新执行一遍
* 当执行本类型Node时它将从begin到end迭代执行自己的Child Node
* 1. 当存在Child Node执行后返回 FAILURE, 本节点返回 FAILURE
* 2. 当存在Child Node执行后返回 RUNING, 本节点返回 RUNING
* 所有节点都返回 SUCCESS, 本节点才返回 SUCCESS
*/
export class Parallel extends Composite {
/**
* 执行
* @param {Ticker} ticker
* @returns {Status}
*/
public tick(ticker: Ticker): Status {
let result = Status.SUCCESS;
for (let i = 0; i < this.children.length; i++) {
let status = this.children[i]._execute(ticker);
if (status == Status.FAILURE) {
result = Status.FAILURE;
} else if (result == Status.SUCCESS && status == Status.RUNNING) {
result = Status.RUNNING;
}
}
return result;
}
}
/**
* 并行节点 每次进入全部重新执行一遍
* 当执行本类型Node时它将从begin到end迭代执行自己的Child Node
* 1. 当存在Child Node执行后返回 FAILURE, 本节点返回 FAILURE
* 2. 任意 Child Node 返回 SUCCESS, 本节点返回 SUCCESS
* 否则返回 RUNNING
*/
export class ParallelAnySuccess extends Composite {
/**
* 执行
* @param {Ticker} ticker
* @returns {Status}
*/
public tick(ticker: Ticker): Status {
let result = Status.RUNNING;
for (let i = 0; i < this.children.length; i++) {
let status = this.children[i]._execute(ticker);
if (status == Status.FAILURE) {
result = Status.FAILURE;
} else if (result == Status.RUNNING && status == Status.SUCCESS) {
result = Status.SUCCESS;
}
}
return result;
}
}

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import { Status } from "../header";
import { Ticker } from "../Ticker";
import { Action } from "./Action";
/**
* 条件节点
*/
export class Condition extends Action {
/** 执行函数 @internal */
private _func: (subject: any) => boolean = null;
constructor(func: (subject: any) => boolean) {
super();
this._func = func;
}
/**
* 执行
* @param {Ticker} ticker
* @returns {Status}
*/
public tick(ticker: Ticker): Status {
return this._func(ticker.subject) ? Status.SUCCESS : Status.FAILURE;
}
}

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import { Status } from "../header";
import { Ticker } from "../Ticker";
import { BaseNode } from "./BaseNode";
/**
* 修饰节点基类
* 只能包含一个子节点
*/
export abstract class Decorator extends BaseNode {
constructor(child: BaseNode) {
super([child]);
}
}
/**
* 失败节点
* 必须且只能包含一个子节点
* 直接返回 FAILURE
* @extends Decorator
*/
export class Failer extends Decorator {
/**
* 执行
* @param {Ticker} ticker
* @returns {Status}
*/
public tick(ticker: Ticker): Status {
if (this.children.length !== 1) {
throw new Error("(Failer)节点必须包含一个子节点");
}
let child = this.children[0];
child._execute(ticker);
return Status.FAILURE;
}
}
/**
* 结果反转节点
* 必须且只能包含一个子节点
* 第一个Child Node节点, 返回 FAILURE, 本Node向自己的Parent Node也返回 SUCCESS
* 第一个Child Node节点, 返回 SUCCESS, 本Node向自己的Parent Node也返回 FAILURE
*/
export class Inverter extends Decorator {
/**
* 执行
* @param {Ticker} ticker
* @returns {Status}
*/
public tick(ticker: Ticker): Status {
if (this.children.length !== 1) {
throw new Error("(Inverter)节点必须包含一个子节点");
}
let child = this.children[0];
let status = child._execute(ticker);
if (status === Status.SUCCESS) {
status = Status.FAILURE;
} else if (status === Status.FAILURE) {
status = Status.SUCCESS;
}
return status;
}
}
/**
* 次数限制节点
* 必须且只能包含一个子节点
* 次数限制内, 根据Child Node的结果, 本Node向自己的Parent Node也返回相同的结果
* 次数超过后, 直接返回 FAILURE
*/
export class LimiterTicks extends Decorator {
/** 最大次数 @internal */
private _maxTicks: number;
/** 当前执行过的次数 @internal */
private _elapsedTicks: number;
/**
* 创建
* @param maxTicks 最大次数
* @param child 子节点
*/
constructor(maxTicks: number, child: BaseNode) {
super(child);
this._maxTicks = maxTicks;
this._elapsedTicks = 0;
}
/**
* 打开
* @param {Ticker} ticker
*/
public open(ticker: Ticker): void {
super.open(ticker);
this._elapsedTicks = 0;
}
/**
* 执行
* @param {Ticker} ticker
* @returns {Status}
*/
public tick(ticker: Ticker): Status {
if (this.children.length !== 1) {
throw new Error("(LimiterTicks)节点必须包含一个子节点");
}
let child = this.children[0];
if (++this._elapsedTicks > this._maxTicks) {
this._elapsedTicks = 0;
return Status.FAILURE;
}
return child._execute(ticker);
}
}
/**
* 时间限制节点
* 只能包含一个子节点
* 规定时间内, 根据Child Node的结果, 本Node向自己的Parent Node也返回相同的结果
* 超时后, 直接返回 FAILURE
*/
export class LimiterTime extends Decorator {
/** 最大时间 (毫秒 ms) @internal */
private _maxTime: number;
/**
* 时间限制节点
* @param maxTime 最大时间 (微秒ms)
* @param child 子节点
*/
constructor(maxTime: number, child: BaseNode) {
super(child);
this._maxTime = maxTime * 1000;
}
/**
* 打开
* @param {Ticker} ticker
*/
public open(ticker: Ticker): void {
super.open(ticker);
let startTime = new Date().getTime();
ticker.blackboard.set("startTime", startTime, ticker.tree.id, this.id);
}
/**
* 执行
* @param {Ticker} ticker
* @returns {Status}
*/
public tick(ticker: Ticker): Status {
if (this.children.length !== 1) {
throw new Error("(LimiterTime)节点必须包含一个子节点");
}
let child = this.children[0];
let currTime = new Date().getTime();
let startTime = ticker.blackboard.get("startTime", ticker.tree.id, this.id);
if (currTime - startTime > this._maxTime) {
return Status.FAILURE;
}
return child._execute(ticker);
}
}
/**
* 循环节点
* 必须且只能包含一个子节点
* 如果maxLoop < 0, 直接返回成功
* 否则等待次数超过之后, 返回Child Node的结果RUNING的次数不计算在内
*/
export class Repeater extends Decorator {
/** 最大循环次数 @internal */
private _maxLoop: number;
/**
* 创建
* @param child 子节点
* @param maxLoop 最大循环次数
*/
constructor(child: BaseNode, maxLoop: number = -1) {
super(child);
this._maxLoop = maxLoop;
}
/**
* 打开
* @param {Ticker} ticker
*/
public open(ticker: Ticker): void {
ticker.blackboard.set("i", 0, ticker.tree.id, this.id);
}
/**
* 执行
* @param {Ticker} ticker
* @returns {Status}
*/
public tick(ticker: Ticker): Status {
if (this.children.length !== 1) {
throw new Error("(Repeater)节点必须包含一个子节点");
}
let child = this.children[0];
let i = ticker.blackboard.get("i", ticker.tree.id, this.id);
let status = Status.SUCCESS;
while (this._maxLoop < 0 || i < this._maxLoop) {
status = child._execute(ticker);
if (status === Status.SUCCESS || status === Status.FAILURE) {
i++;
} else {
break;
}
}
ticker.blackboard.set("i", i, ticker.tree.id, this.id);
return status;
}
}
/**
* 循环节点
* 只能包含一个子节点
* 如果maxLoop < 0, 直接返回成功
* 当Child Node返回 FAILURE, 本Node向自己的Parent Node返回 FAILURE
* 循环次数大于等于maxLoop时, 返回Child Node的结果
*/
export class RepeatUntilFailure extends Decorator {
/** 最大循环次数 @internal */
private _maxLoop: number;
constructor(child: BaseNode, maxLoop: number = -1) {
super(child);
this._maxLoop = maxLoop;
}
/**
* 打开
* @param {Ticker} ticker
*/
public open(ticker: Ticker): void {
ticker.blackboard.set("i", 0, ticker.tree.id, this.id);
}
/**
* 执行
* @param {Ticker} ticker
* @returns {Status}
*/
public tick(ticker: Ticker): Status {
if (this.children.length !== 1) {
throw new Error("(RepeatUntilFailure)节点必须包含一个子节点");
}
let child = this.children[0];
let i = ticker.blackboard.get("i", ticker.tree.id, this.id);
let status = Status.SUCCESS;
while (this._maxLoop < 0 || i < this._maxLoop) {
status = child._execute(ticker);
if (status === Status.SUCCESS) {
i++;
} else {
break;
}
}
ticker.blackboard.set("i", i, ticker.tree.id, this.id);
return status;
}
}
/**
* 循环节点(只能包含一个子节点)
* 如果maxLoop < 0, 直接返回失败
* 当Child Node返回 SUCCESS, 本Node向自己的Parent Node返回 SUCCESS
* 循环次数大于等于maxLoop时, 返回Child Node的结果
*/
export class RepeatUntilSuccess extends Decorator {
/** 最大循环次数 @internal */
private _maxLoop: number;
/**
* 创建
* @param child 子节点
* @param maxLoop 最大循环次数
*/
constructor(child: BaseNode, maxLoop: number = -1) {
super(child);
this._maxLoop = maxLoop;
}
/**
* 打开
* @param {Ticker} ticker
*/
public open(ticker: Ticker): void {
ticker.blackboard.set("i", 0, ticker.tree.id, this.id);
}
/**
* 执行
* @param {Ticker} ticker
* @returns {Status}
*/
public tick(ticker: Ticker): Status {
if (this.children.length !== 1) {
throw new Error("(RepeatUntilSuccess)节点必须包含一个子节点");
}
let child = this.children[0];
let i = ticker.blackboard.get("i", ticker.tree.id, this.id);
let status = Status.FAILURE;
while (this._maxLoop < 0 || i < this._maxLoop) {
status = child._execute(ticker);
if (status === Status.FAILURE) {
i++;
} else {
break;
}
}
ticker.blackboard.set("i", i, ticker.tree.id, this.id);
return status;
}
}
/**
* 逻辑节点, 一直执行(只能包含一个子节点)
* 直接返回 RUNING
*/
export class Runner extends Decorator {
/**
* 执行
* @param {Ticker} ticker
* @returns {Status}
*/
public tick(ticker: Ticker): Status {
if (this.children.length !== 1) {
throw new Error("(Runner)节点必须包含一个子节点");
}
let child = this.children[0];
child._execute(ticker);
return Status.RUNNING;
}
}
/**
* 成功节点(包含一个子节点)
* 直接返回 SUCCESS
*/
export class Succeeder extends Decorator {
/**
* 执行
* @param {Ticker} ticker
* @returns {Status}
*/
public tick(ticker: Ticker): Status {
if (this.children.length !== 1) {
throw new Error("(Succeeder)节点必须包含一个子节点");
}
let child = this.children[0];
child._execute(ticker);
return Status.SUCCESS;
}
}

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import { Blackboard } from "./Blackboard";
import { BaseNode } from "./BTNode/BaseNode";
import { createUUID } from "./header";
import { Ticker } from "./Ticker";
/**
* 行为树
* 所有节点全部添加到树中
*/
export class BehaviorTree {
/** 行为树ID @internal */
private _id: string;
/** 行为树跟节点 @internal */
private _root: BaseNode;
/**
* constructor
* @param root 根节点
*/
constructor(root: BaseNode) {
this._id = createUUID();
this._root = root;
}
/**
* 执行
* @param subject 主体
* @param blackboard 黑板
* @param ticker 更新器
*/
public tick(subject: any, blackboard: Blackboard, ticker?: Ticker): void {
ticker = ticker || new Ticker(subject, blackboard, this);
ticker.openNodes.length = 0;
this._root._execute(ticker);
// 上次打开的节点
let lastOpenNodes = blackboard.get("openNodes", this._id) as BaseNode[];
// 当前打开的节点
let currOpenNodes = ticker.openNodes;
let start = 0;
for (let i = 0; i < Math.min(lastOpenNodes.length, currOpenNodes.length); i++) {
start = i + 1;
if (lastOpenNodes[i] !== currOpenNodes[i]) {
break;
}
}
// 关闭不需要的节点
for (let i = lastOpenNodes.length - 1; i >= start; i--) {
lastOpenNodes[i]._close(ticker);
}
/* POPULATE BLACKBOARD */
blackboard.set("openNodes", currOpenNodes, this._id);
blackboard.set("nodeCount", ticker.nodeCount, this._id);
}
get id(): string {
return this._id;
}
get root(): BaseNode {
return this._root;
}
}

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/**
* 行为树数据
*/
interface ITreeData {
nodeMemory: { [nodeScope: string]: any };
openNodes: any[];
}
/** 平台 */
export class Blackboard {
/** 行为树打断保护 */
public interruptDefend: boolean = false;
/** 打断行为树的标记 */
public interrupt: boolean = false;
/** 基础记忆 @internal */
private _baseMemory: any;
/** 树记忆 @internal */
private _treeMemory: { [treeScope: string]: ITreeData };
constructor() {
this._baseMemory = {};
this._treeMemory = {};
}
/**
* 清除
*/
public clear(): void {
this._baseMemory = {};
this._treeMemory = {};
}
/**
* 设置
* @param key 键
* @param value 值
* @param treeScope 树范围
* @param nodeScope 节点范围
*/
public set(key: string, value: any, treeScope?: string, nodeScope?: string): void {
let memory = this._getMemory(treeScope, nodeScope);
memory[key] = value;
}
/**
* 获取
* @param key 键
* @param treeScope 树范围
* @param nodeScope 节点范围
* @returns 值
*/
public get(key: string, treeScope?: string, nodeScope?: string): any {
let memory = this._getMemory(treeScope, nodeScope);
return memory[key];
}
/**
* 获取树记忆
* @param treeScope 树范围
* @returns 树记忆
* @internal
*/
private _getTreeMemory(treeScope: string): ITreeData {
if (!this._treeMemory[treeScope]) {
this._treeMemory[treeScope] = {
nodeMemory: {},
openNodes: [],
};
}
return this._treeMemory[treeScope];
}
/**
* 获取节点记忆
* @param treeMemory 树记忆
* @param nodeScope 节点范围
* @returns 节点记忆
* @internal
*/
private _getNodeMemory(treeMemory: ITreeData, nodeScope: string): { [key: string]: any } {
let memory = treeMemory.nodeMemory;
if (!memory[nodeScope]) {
memory[nodeScope] = {};
}
return memory[nodeScope];
}
/**
* 获取记忆
* @param treeScope 树范围
* @param nodeScope 节点范围
* @returns 记忆
* @internal
*/
private _getMemory(treeScope?: string, nodeScope?: string): { [key: string]: any } {
let memory = this._baseMemory;
if (treeScope) {
memory = this._getTreeMemory(treeScope);
if (nodeScope) {
memory = this._getNodeMemory(memory, nodeScope);
}
}
return memory;
}
}

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import { BehaviorTree } from "./BehaviorTree";
import { Blackboard } from "./Blackboard";
import { BaseNode } from "./BTNode/BaseNode";
export class Ticker {
tree: BehaviorTree; // 行为树跟节点
openNodes: BaseNode[]; // 当前打开的节点
nodeCount: number; // 当前打开的节点数量
blackboard: Blackboard; // 数据容器
debug: any;
subject: any;
constructor(subject: any, blackboard: Blackboard, tree: BehaviorTree) {
this.tree = tree;
this.openNodes = [];
this.nodeCount = 0;
this.debug = null;
this.subject = subject;
this.blackboard = blackboard;
}
/**
* 进入节点
* @param node 节点
*/
public enterNode(node: BaseNode): void {
this.nodeCount++;
this.openNodes.push(node);
}
/**
* 打开节点
* @param node 节点
*/
public openNode(node: BaseNode): void { }
/**
* 更新节点
* @param node 节点
*/
public tickNode(node: BaseNode): void { }
/**
* 关闭节点
* @param node 节点
*/
public closeNode(node: BaseNode): void {
this.openNodes.pop();
}
/**
* 退出节点
* @param node 节点
*/
public exitNode(node: BaseNode): void { }
}

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export const enum Status {
FAILURE,
SUCCESS,
RUNNING,
}
/**
* 创建UUID
* @returns UUID
* @internal
*/
export function createUUID(): string {
let s: string[] = Array(36);
let hexDigits = "0123456789abcdef";
for (let i = 0; i < 36; i++) {
let start = Math.floor(Math.random() * 0x10);
s[i] = hexDigits.substring(start, start + 1);
}
// bits 12-15 of the time_hi_and_version field to 0010
s[14] = "4";
// bits 6-7 of the clock_seq_hi_and_reserved to 01
let start = (parseInt(s[19], 16) & 0x3) | 0x8;
s[19] = hexDigits.substring(start, start + 1);
s[8] = s[13] = s[18] = s[23] = "-";
let uuid = s.join("");
return uuid;
}

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/** 行为树 */
export { Agent as Agent } from "./behaviortree/Agent";
export { BehaviorTree } from "./behaviortree/BehaviorTree";
export { Blackboard } from "./behaviortree/Blackboard";
export * as Action from "./behaviortree/BTNode/Action";
export { BaseNode as Node } from "./behaviortree/BTNode/BaseNode";
export * as Composite from "./behaviortree/BTNode/Composite";
export { Condition } from "./behaviortree/BTNode/Condition";
export * as Decorator from "./behaviortree/BTNode/Decorator";
export { Status } from "./behaviortree/header";
export { Ticker } from "./behaviortree/Ticker";

24
tsconfig.json Normal file
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{
"compilerOptions": {
"target": "es6", //
"module": "commonjs", //
"experimentalDecorators": true, // 启用ES装饰器。
"strict": true,
"strictNullChecks": false,
"moduleResolution": "Node",
"skipLibCheck": true,
"esModuleInterop": true,
"stripInternal": true,
"types": []
},
"include": [
"./src/**/*"
// "libs"
],
// 排除
"exclude": [
"node_modules",
"dist",
"build"
]
}