更新example
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YHH
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import { _decorator, Component, Node, Label, Button } from 'cc';
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import {
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BehaviorTreeBuilder,
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BehaviorTree,
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Blackboard,
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BehaviorTreeJSONConfig
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} from '@esengine/ai';
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const { ccclass, property } = _decorator;
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/**
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* 完整行为树指南使用示例
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*
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* 此示例展示了高级行为树特性：
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* 1. 条件装饰器 (Conditional Decorator)
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* 2. 重复器 (Repeater)
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* 3. 反转器 (Inverter)
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* 4. 黑板变量引用 {{variable}}
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* 5. 复杂的组合行为逻辑
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* 6. 自定义条件和动作
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*
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* 包含三种行为模式：
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* - 巡逻模式：重复执行巡逻序列
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* - 战斗模式：检测敌人并攻击/防御
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* - 闲置模式：状态报告和等待
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*/
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@ccclass('BehaviorTreeGuideUsage')
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export class BehaviorTreeGuideUsage extends Component {
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@property(Label)
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statusLabel: Label = null;
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@property(Label)
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logLabel: Label = null;
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@property(Button)
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controlButton: Button = null;
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@property(Button)
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switchStateButton: Button = null;
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private behaviorTree: BehaviorTree<any> = null;
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private blackboard: Blackboard = null;
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private isRunning: boolean = false;
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private logs: string[] = [];
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private currentStateIndex: number = 0;
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private states = ['patrol', 'combat', 'idle'];
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onLoad() {
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this.setupUI();
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this.initializeBehaviorTree();
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}
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private setupUI() {
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if (this.controlButton) {
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this.controlButton.node.on('click', this.toggleExecution, this);
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}
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if (this.switchStateButton) {
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this.switchStateButton.node.on('click', this.switchState, this);
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}
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this.updateStatus('初始化完整行为树指南...');
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this.addLog('🎓 行为树指南示例已加载');
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}
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private initializeBehaviorTree() {
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try {
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// 这里应该从JSON文件加载完整的行为树配置
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// 为了演示，我们使用简化版本
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const config: BehaviorTreeJSONConfig = {
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nodes: [
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{
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id: "root_1",
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type: "root",
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name: "行为树指南根",
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children: ["selector_main"]
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},
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{
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id: "selector_main",
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type: "selector",
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name: "主选择器",
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properties: { abortType: "LowerPriority" },
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children: ["sequence_combat", "sequence_patrol", "sequence_idle"]
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},
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{
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id: "sequence_combat",
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type: "sequence",
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name: "战斗序列",
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children: ["condition_enemy", "action_attack"]
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},
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{
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id: "condition_enemy",
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type: "condition-random",
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name: "随机敌人出现",
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properties: { successProbability: 0.3 }
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},
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{
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id: "action_attack",
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type: "log-action",
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name: "攻击动作",
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properties: {
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message: "发动攻击！生命值: {{health}}, 能量: {{energy}}",
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logLevel: "warn"
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}
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},
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{
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id: "sequence_patrol",
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type: "sequence",
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name: "巡逻序列",
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children: ["action_patrol", "wait_patrol"]
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},
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{
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id: "action_patrol",
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type: "set-blackboard-value",
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name: "执行巡逻",
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properties: {
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variableName: "lastAction",
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value: "{{state}}_执行中"
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}
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},
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{
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id: "wait_patrol",
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type: "wait-action",
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name: "巡逻等待",
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properties: { waitTime: 1 }
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},
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{
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id: "sequence_idle",
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type: "sequence",
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name: "闲置序列",
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children: ["action_idle", "wait_idle"]
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},
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{
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id: "action_idle",
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type: "log-action",
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name: "状态报告",
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properties: {
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message: "状态报告 - 当前: {{state}}, 上次动作: {{lastAction}}"
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}
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},
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{
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id: "wait_idle",
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type: "wait-action",
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name: "闲置等待",
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properties: { waitTime: 2 }
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}
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],
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blackboard: [
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{
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name: "state",
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type: "string",
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value: "patrol",
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description: "当前状态"
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},
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{
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name: "lastAction",
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type: "string",
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value: "",
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description: "最后执行的动作"
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},
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{
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name: "health",
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type: "number",
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value: 100,
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description: "生命值"
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},
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{
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name: "energy",
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type: "number",
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value: 50,
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description: "能量值"
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}
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]
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};
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// 创建执行上下文
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const executionContext = {
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node: this.node,
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component: this,
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log: (message: string, level: string = 'info') => {
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this.addLog(`🤖 [${level.toUpperCase()}] ${message}`);
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}
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};
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// 🎯 使用 BehaviorTreeBuilder 一键创建
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const result = BehaviorTreeBuilder.fromBehaviorTreeConfig(config, executionContext);
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this.behaviorTree = result.tree;
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this.blackboard = result.blackboard;
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this.updateStatus('完整行为树指南已准备就绪');
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this.addLog('✅ 行为树创建成功（高级特性版本）');
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this.addLog(`📊 包含 ${config.nodes.length} 个节点`);
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this.addLog(`📋 包含 ${config.blackboard.length} 个黑板变量`);
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// 显示初始状态
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this.logBlackboardStatus();
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} catch (error) {
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console.error('初始化行为树失败:', error);
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this.updateStatus('初始化失败: ' + error.message);
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this.addLog('❌ 行为树初始化失败: ' + error.message);
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}
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}
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private toggleExecution() {
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if (!this.behaviorTree) {
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this.addLog('❌ 行为树未准备好');
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return;
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}
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this.isRunning = !this.isRunning;
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if (this.isRunning) {
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this.behaviorTree.reset();
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this.updateStatus('执行中...');
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this.addLog('🚀 开始执行完整行为树指南');
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if (this.controlButton) {
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this.controlButton.getComponentInChildren(Label).string = '停止';
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}
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} else {
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this.updateStatus('已停止');
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this.addLog('⏹️ 行为树执行已停止');
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if (this.controlButton) {
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this.controlButton.getComponentInChildren(Label).string = '开始';
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}
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}
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}
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private switchState() {
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if (!this.blackboard) return;
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this.currentStateIndex = (this.currentStateIndex + 1) % this.states.length;
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const newState = this.states[this.currentStateIndex];
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this.blackboard.setValue('state', newState);
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this.addLog(`🔄 切换状态到: ${newState}`);
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this.logBlackboardStatus();
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}
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update(deltaTime: number) {
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if (!this.isRunning || !this.behaviorTree) return;
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try {
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this.behaviorTree.tick(deltaTime);
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} catch (error) {
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console.error('行为树执行出错:', error);
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this.addLog('❌ 执行出错: ' + error.message);
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this.isRunning = false;
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}
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}
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private logBlackboardStatus() {
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if (!this.blackboard) return;
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const variables = ['state', 'lastAction', 'health', 'energy'];
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const status = variables.map(name => {
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const value = this.blackboard.getValue(name, 'undefined');
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return `${name}:${value}`;
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}).join(', ');
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this.addLog(`📊 黑板状态: ${status}`);
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}
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private updateStatus(status: string) {
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if (this.statusLabel) {
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this.statusLabel.string = status;
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}
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}
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private addLog(message: string) {
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this.logs.push(`[${new Date().toLocaleTimeString()}] ${message}`);
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// 只保留最新的20条日志
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if (this.logs.length > 20) {
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this.logs.shift();
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}
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if (this.logLabel) {
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this.logLabel.string = this.logs.join('\n');
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}
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console.log('[BehaviorTreeGuide]', message);
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}
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onDestroy() {
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this.isRunning = false;
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}
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}
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/*
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* 完整指南特色功能说明：
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*
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* 1. 高级节点类型：
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* - Repeater: 无限重复巡逻行为
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* - Conditional Decorator: 带条件的装饰器
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* - Inverter: 反转子节点结果
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*
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* 2. 黑板变量引用：
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* - {{state}}: 动态引用当前状态
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* - {{health}}: 显示生命值
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* - {{lastAction}}: 跟踪最后动作
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*
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* 3. 复杂行为逻辑：
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* - 巡逻：重复执行，状态检查
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* - 战斗：敌人检测，攻击防御
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* - 闲置：状态报告，定时等待
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*
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* 4. 交互功能：
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* - 状态切换按钮
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* - 开始/停止控制
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* - 实时日志显示
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* - 黑板变量监控
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*/
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