import { Entity, World } from "koota";
//#region src/ecs/systems/batchRemoveSystem.d.ts
/**
 * Create a batch-remove system bound to its own change-tracking
 * subscription.
 *
 * Each SpriteGroup constructs one. Removes sprites from batches when
 * they lose IsRenderable.
 *
 * Triggered by Removed(IsRenderable). Reads the InBatch relation to find
 * the batch entity and slot, frees the slot, removes the relation,
 * and recycles the batch if empty.
 *
 * Entity destruction is deferred — zombie entities are returned to the
 * caller and destroyed at the top of the next frame by
 * `deferredDestroySystem`. This pushes koota's cascading trait removal
 * cost out of the hot render frame.
 */
declare function createBatchRemoveSystem(): (world: World, pendingDestroy: Entity[]) => void;
/**
 * Destroy entities deferred from the previous frame's batchRemoveSystem.
 *
 * Runs at the top of the frame before any other system, so koota's
 * cascading trait removal cost is paid outside the hot render path.
 * The zombie entities are invisible to all systems (no IsRenderable,
 * no IsBatched) so the one-frame delay is safe.
 */
declare function deferredDestroySystem(pendingDestroy: Entity[]): void;
//#endregion
export { createBatchRemoveSystem, deferredDestroySystem };
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