import { ECSContext } from "./ecs";
export interface EntityAndTimestamp {
    entity: number | null;
    happenedAt: number;
}
export interface Memory {
    lastDamageDealt: EntityAndTimestamp;
    lastTargeted: EntityAndTimestamp;
}
export declare function createMemory(): Memory;
export declare function getMemory(ctx: ECSContext, eid: number): Memory;
export declare function setMemory(ctx: ECSContext, eid: number, memory: Memory): void;
export declare function removeMemory(ctx: ECSContext, eid: number): void;
export declare function entityExists(ctx: ECSContext, eid: number): boolean;
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