2025-09-02 17:05:46 +08:00
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import type { BehaviorTree } from "../BehaviorTree";
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2025-06-04 23:10:59 +08:00
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import { Status } from "../header";
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2025-09-02 17:05:46 +08:00
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import { Composite, MemoryComposite } from "./AbstractNodes";
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2025-06-04 23:10:59 +08:00
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/**
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* 记忆选择节点
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2025-09-02 17:05:46 +08:00
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* 选择不为 FAILURE 的节点,记住上次运行的子节点位置
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2025-06-04 23:10:59 +08:00
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* 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
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*/
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2025-09-02 17:05:46 +08:00
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export class MemSelector extends MemoryComposite {
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public tick<T>(tree: BehaviorTree<T>): Status {
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for (let i = this.runningIndex; i < this.children.length; i++) {
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let status = this.children[i]!._execute(tree);
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2025-06-04 23:10:59 +08:00
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if (status !== Status.FAILURE) {
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if (status === Status.RUNNING) {
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2025-09-02 17:05:46 +08:00
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this.runningIndex = i;
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2025-06-04 23:10:59 +08:00
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}
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return status;
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}
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}
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return Status.FAILURE;
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}
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}
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/**
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* 记忆顺序节点
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2025-09-02 17:05:46 +08:00
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* 如果上次执行到 RUNNING 的节点, 下次进入节点后, 直接从 RUNNING 节点开始
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* 遇到 SUCCESS 或者 FAILURE 停止迭代
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2025-06-04 23:10:59 +08:00
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* 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
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* 所有节点都返回 SUCCESS, 本节点才返回 SUCCESS
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*/
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2025-09-02 17:05:46 +08:00
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export class MemSequence extends MemoryComposite {
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public tick<T>(tree: BehaviorTree<T>): Status {
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for (let i = this.runningIndex; i < this.children.length; i++) {
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let status = this.children[i]!._execute(tree);
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2025-06-04 23:10:59 +08:00
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if (status !== Status.SUCCESS) {
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if (status === Status.RUNNING) {
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2025-09-02 17:05:46 +08:00
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this.runningIndex = i;
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2025-06-04 23:10:59 +08:00
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}
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return status;
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}
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}
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return Status.SUCCESS;
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}
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}
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/**
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* 随机选择节点
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* 从Child Node中随机选择一个执行
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*/
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export class RandomSelector extends Composite {
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2025-09-02 17:05:46 +08:00
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public tick<T>(tree: BehaviorTree<T>): Status {
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if (this.children.length === 0) {
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return Status.FAILURE;
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}
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2025-06-04 23:10:59 +08:00
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2025-09-02 17:05:46 +08:00
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const childIndex = Math.floor(Math.random() * this.children.length);
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const status = this.children[childIndex]!._execute(tree);
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2025-06-04 23:10:59 +08:00
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return status;
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}
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}
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/**
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* 选择节点,选择不为 FAILURE 的节点
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2025-09-02 17:05:46 +08:00
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* 当执行本Node时,它将从begin到end迭代执行自己的Child Node:
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* 如遇到一个Child Node执行后返回 SUCCESS 或者 RUNNING,那停止迭代,本Node向自己的Parent Node也返回 SUCCESS 或 RUNNING
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2025-06-04 23:10:59 +08:00
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*/
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export class Selector extends Composite {
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2025-09-02 17:05:46 +08:00
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public tick<T>(tree: BehaviorTree<T>): Status {
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2025-06-04 23:10:59 +08:00
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for (let i = 0; i < this.children.length; i++) {
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2025-09-02 17:05:46 +08:00
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let status = this.children[i]!._execute(tree);
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2025-06-04 23:10:59 +08:00
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if (status !== Status.FAILURE) {
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return status;
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}
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}
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return Status.FAILURE;
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}
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}
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/**
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* 顺序节点
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* 当执行本类型Node时,它将从begin到end迭代执行自己的Child Node:
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2025-09-02 17:05:46 +08:00
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* 遇到 FAILURE 或 RUNNING, 那停止迭代,返回FAILURE 或 RUNNING
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2025-06-04 23:10:59 +08:00
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* 所有节点都返回 SUCCESS, 本节点才返回 SUCCESS
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*/
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export class Sequence extends Composite {
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2025-09-02 17:05:46 +08:00
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public tick<T>(tree: BehaviorTree<T>): Status {
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2025-06-04 23:10:59 +08:00
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for (let i = 0; i < this.children.length; i++) {
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2025-09-02 17:05:46 +08:00
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let status = this.children[i]!._execute(tree);
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2025-06-04 23:10:59 +08:00
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if (status !== Status.SUCCESS) {
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return status;
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}
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}
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return Status.SUCCESS;
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}
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}
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/**
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* 并行节点 每次进入全部重新执行一遍
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* 当执行本类型Node时,它将从begin到end迭代执行自己的Child Node:
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* 1. 当存在Child Node执行后返回 FAILURE, 本节点返回 FAILURE
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2025-09-02 17:05:46 +08:00
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* 2. 当存在Child Node执行后返回 RUNNING, 本节点返回 RUNNING
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2025-06-04 23:10:59 +08:00
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* 所有节点都返回 SUCCESS, 本节点才返回 SUCCESS
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*/
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export class Parallel extends Composite {
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2025-09-02 17:05:46 +08:00
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public tick<T>(tree: BehaviorTree<T>): Status {
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2025-06-04 23:10:59 +08:00
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let result = Status.SUCCESS;
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for (let i = 0; i < this.children.length; i++) {
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2025-09-02 17:05:46 +08:00
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let status = this.children[i]!._execute(tree);
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2025-06-04 23:10:59 +08:00
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if (status == Status.FAILURE) {
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result = Status.FAILURE;
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} else if (result == Status.SUCCESS && status == Status.RUNNING) {
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result = Status.RUNNING;
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}
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}
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return result;
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}
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}
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/**
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* 并行节点 每次进入全部重新执行一遍
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* 当执行本类型Node时,它将从begin到end迭代执行自己的Child Node:
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* 1. 当存在Child Node执行后返回 FAILURE, 本节点返回 FAILURE
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* 2. 任意 Child Node 返回 SUCCESS, 本节点返回 SUCCESS
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* 否则返回 RUNNING
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*/
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export class ParallelAnySuccess extends Composite {
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2025-09-02 17:05:46 +08:00
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public tick<T>(tree: BehaviorTree<T>): Status {
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2025-06-04 23:10:59 +08:00
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let result = Status.RUNNING;
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for (let i = 0; i < this.children.length; i++) {
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2025-09-02 17:05:46 +08:00
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let status = this.children[i]!._execute(tree);
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2025-06-04 23:10:59 +08:00
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if (status == Status.FAILURE) {
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result = Status.FAILURE;
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} else if (result == Status.RUNNING && status == Status.SUCCESS) {
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result = Status.SUCCESS;
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}
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}
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return result;
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}
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}
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