import { ECSContext } from "../ecs";
export declare const KILL_PLANE_Y = -500;
export declare const KILL_PLANE_EID = -99;
export declare const KILL_PLANE_NAME = "The Void";
/**
 * Kill plane system that removes entities that fall below the world threshold.
 *
 * For entities with Health component: uses doDamage() to properly kill them,
 * which triggers OnDie effects and proper cleanup.
 *
 * For entities without Health component: uses despawn() to remove them directly.
 *
 * This system runs after motionSystem to check final positions after movement.
 */
export declare function killPlaneSystem(ctx: ECSContext): void;
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