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60 lines
2.5 KiB
60 lines
2.5 KiB
import type { World, EntityId } from 'db://assets/mx/module/ecs';
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import { BattleEventFactory } from '../events/BattleEvents';
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import type { BattleEventBus } from '../events/BattleEventBus';
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import type { GridMap } from '../battlefield/GridMap';
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import type { SpatialGrid } from '../battlefield/SpatialGrid';
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import type { AbilitySystem } from './AbilitySystem';
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/** 暂缓 kill 判定（还魂丹等：死亡特效播完再复活或真死） */
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export type TryDeferEntityKillFn = (victim: EntityId, killer: EntityId, hpBeforeKill: number) => boolean;
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/** 实体生命周期 */
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export class LifecycleSystem {
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private _tryDeferKill: TryDeferEntityKillFn | null = null;
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constructor(
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private readonly _world: World,
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private readonly _grid: GridMap,
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private readonly _spatial: SpatialGrid,
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private readonly _events: BattleEventBus,
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private readonly _abilities: AbilitySystem,
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) {}
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/** 注册暂缓 kill 回调（BattleSession.tryDeferEntityKill 桥接） */
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setTryDeferKillPredicate(fn: TryDeferEntityKillFn | null): void {
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this._tryDeferKill = fn;
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}
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/**
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* @param victim 被击杀实体 ID
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* @param killer 击杀者实体 ID
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* @param hpBeforeKill 致死前血量（还魂丹等复活继承用）
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* @param damageType 致死伤害类型
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* @param fromPassiveResult 是否来自被动 result
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*/
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kill(victim: EntityId, killer: EntityId, hpBeforeKill = 0, damageType?: string, fromPassiveResult = false): void {
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if (!this._world.isAlive(victim)) return;
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if (this._tryDeferKill?.(victim, killer, hpBeforeKill)) return;
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// 先解绑触发器，避免后续 fireEvent('OnKill') 仍把 victim 当作施法者
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this._abilities.unbindEntity(victim);
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this._grid.clearOccupant(victim);
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this._spatial.removeEntity(victim);
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// 立即派发：金币/飞桃需在 destroy 前读到 UnitMeta / 怪物节点
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this._events.emit(BattleEventFactory.entityKilled(killer, victim, damageType, fromPassiveResult), true);
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this._world.destroy(victim);
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this._abilities.fireEvent('OnKill', { killer, victim });
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}
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/** 无击杀结算移除（复活回收上场怪等） */
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despawn(entity: EntityId): void {
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if (!this._world.isAlive(entity)) return;
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this._abilities.unbindEntity(entity);
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this._grid.clearOccupant(entity);
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this._spatial.removeEntity(entity);
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this._events.emit(BattleEventFactory.unitDespawned(entity), true);
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this._world.destroy(entity);
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}
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}
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