rts-demo
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YHH
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import { EntitySystem, Entity, Matcher, Time } from '@esengine/ecs-framework';
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import { HealthComponent } from '../components/HealthComponent';
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/**
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* 生命值系统 - 处理生命值相关的逻辑
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*
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* 展示生命值管理：
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* 1. 自动回血
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* 2. 无敌状态管理
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* 3. 死亡处理
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* 4. 事件触发
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*/
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export class HealthSystem extends EntitySystem {
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/** 回血延迟时间（受伤后多久开始回血，毫秒） */
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private regenDelay: number = 3000;
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constructor() {
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// 只处理拥有HealthComponent的实体
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super(Matcher.empty().all(HealthComponent));
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}
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public initialize(): void {
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super.initialize();
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console.log("HealthSystem 已初始化 - 开始处理生命值逻辑");
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}
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/**
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* 每帧处理：更新生命值相关逻辑
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*/
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protected process(entities: Entity[]): void {
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for (const entity of entities) {
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const health = entity.getComponent(HealthComponent);
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// 处理无敌状态
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this.processInvincibility(health);
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// 处理生命值回复
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this.processHealthRegeneration(entity, health);
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// 检查死亡状态
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this.checkDeathStatus(entity, health);
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}
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}
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/**
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* 处理无敌状态
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*/
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private processInvincibility(health: HealthComponent): void {
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if (health.invincible && health.invincibleDuration > 0) {
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health.invincibleDuration -= Time.deltaTime;
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// 无敌时间结束
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if (health.invincibleDuration <= 0) {
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health.invincible = false;
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health.invincibleDuration = 0;
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console.log("无敌状态结束");
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}
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}
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}
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/**
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* 处理生命值回复
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*/
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private processHealthRegeneration(entity: Entity, health: HealthComponent): void {
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// 如果已经满血或者没有回复速度，则不处理
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if (health.isFullHealth() || health.regenRate <= 0) {
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return;
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}
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// 检查是否超过了回血延迟时间
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const currentTime = Date.now();
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if (currentTime - health.lastDamageTime < this.regenDelay) {
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return;
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}
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// 计算回血量
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const regenAmount = health.regenRate * Time.deltaTime;
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const oldHealth = health.currentHealth;
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// 执行回血
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health.heal(regenAmount);
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// 如果实际回了血，输出日志
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if (health.currentHealth > oldHealth) {
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console.log(`${entity.name} 回血: ${oldHealth.toFixed(1)} -> ${health.currentHealth.toFixed(1)} (${health.getHealthPercentage() * 100}%)`);
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}
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}
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/**
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* 检查死亡状态
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*/
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private checkDeathStatus(entity: Entity, health: HealthComponent): void {
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if (health.isDead()) {
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this.handleEntityDeath(entity, health);
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}
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}
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/**
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* 处理实体死亡
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*/
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private handleEntityDeath(entity: Entity, health: HealthComponent): void {
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console.log(`💀 ${entity.name} 已死亡！`);
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// 触发死亡事件（如果有事件系统）
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this.triggerDeathEvent(entity);
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// 可以在这里添加死亡效果、掉落物品等逻辑
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this.createDeathEffect(entity);
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// 标记实体为死亡状态（而不是立即销毁）
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// 这样其他系统可以处理死亡相关的逻辑
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entity.addComponent(new DeadMarkerComponent());
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// 可选：延迟销毁实体
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setTimeout(() => {
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if (entity && !entity.isDestroyed) {
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entity.destroy();
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console.log(`${entity.name} 已被销毁`);
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}
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}, 1000); // 1秒后销毁
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}
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/**
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* 触发死亡事件
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*/
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private triggerDeathEvent(entity: Entity): void {
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// 如果项目中有事件系统，可以在这里发送死亡事件
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console.log(`触发死亡事件: ${entity.name}`);
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// 示例事件数据
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const deathEventData = {
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entityId: entity.id,
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entityName: entity.name,
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deathTime: Date.now(),
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position: this.getEntityPosition(entity)
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};
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// 这里可以调用事件系统发送事件
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// eventBus.emit('entity:died', deathEventData);
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}
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/**
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* 创建死亡效果
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*/
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private createDeathEffect(entity: Entity): void {
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console.log(`💥 为 ${entity.name} 创建死亡效果`);
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// 在实际游戏中，这里可能会：
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// 1. 播放死亡动画
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// 2. 播放死亡音效
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// 3. 创建粒子效果
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// 4. 掉落物品
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}
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/**
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* 获取实体位置（辅助方法）
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*/
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private getEntityPosition(entity: Entity): { x: number; y: number; z: number } {
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// 尝试获取位置组件
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const position = entity.getComponent(PositionComponent);
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if (position) {
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return {
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x: position.position.x,
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y: position.position.y,
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z: position.position.z
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};
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}
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return { x: 0, y: 0, z: 0 };
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}
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/**
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* 公共方法：对实体造成伤害
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* 这个方法可以被其他系统调用
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*/
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public damageEntity(entity: Entity, damage: number, source?: Entity): boolean {
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const health = entity.getComponent(HealthComponent);
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if (!health || health.invincible) {
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return false; // 无生命值组件或处于无敌状态
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}
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const oldHealth = health.currentHealth;
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health.takeDamage(damage);
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console.log(`⚔️ ${entity.name} 受到 ${damage} 点伤害: ${oldHealth.toFixed(1)} -> ${health.currentHealth.toFixed(1)}`);
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// 如果有伤害来源，可以记录或处理
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if (source) {
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console.log(`伤害来源: ${source.name}`);
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}
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return true;
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}
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/**
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* 公共方法：治疗实体
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*/
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public healEntity(entity: Entity, healAmount: number): boolean {
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const health = entity.getComponent(HealthComponent);
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if (!health || health.isFullHealth()) {
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return false;
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}
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const oldHealth = health.currentHealth;
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health.heal(healAmount);
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console.log(`💚 ${entity.name} 恢复 ${healAmount} 点生命值: ${oldHealth.toFixed(1)} -> ${health.currentHealth.toFixed(1)}`);
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return true;
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}
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}
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/**
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* 死亡标记组件 - 标记已死亡的实体
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* 这是一个简单的标记组件，用于标识死亡状态
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*/
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class DeadMarkerComponent extends Component {
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public deathTime: number;
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constructor() {
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super();
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this.deathTime = Date.now();
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}
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}
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// 导入位置组件（用于获取实体位置）
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import { PositionComponent } from '../components/PositionComponent';
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import { Component } from '@esengine/ecs-framework';
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