import { Entity } from '../engine';
import { Vector3Type } from '../schemas';
import { KnockbackFalloff } from './physics-impulse';
export { KnockbackFalloff } from './physics-impulse';
/**
 * @public
 */
export interface PhysicsSystem {
    /**
     * Apply a one-shot impulse to the player entity.
     * Multiple calls within the same frame are accumulated (summed).
     *
     * @param vector - a single `vector` whose length encodes the strength.
     * or use overload for `direction` with a separate `magnitude` — the direction will be normalized before scaling.
     */
    applyImpulseToPlayer(vector: Vector3Type): void;
    applyImpulseToPlayer(direction: Vector3Type, magnitude: number): void;
    /**
     * Apply a continuous force to the player from a given source entity.
     * Multiple sources are accumulated: the registry sums all active forces
     * and writes a single PBPhysicsCombinedForce component.
     * Calling again with the same source replaces its previous force.
     *
     * @param source - Entity key identifying this force source
     * @param vector - single `vector` whose length encodes the strength
     * or use overload for `direction` with a separate `magnitude` — the direction will be normalized before scaling.
     */
    applyForceToPlayer(source: Entity, vector: Vector3Type): void;
    applyForceToPlayer(source: Entity, direction: Vector3Type, magnitude: number): void;
    /**
     * Remove a continuous force from the player. Remaining sources are
     * re-summed; if none remain the force is cleared. No-op if the source
     * is not registered.
     *
     * @param source - Entity key identifying the force source to remove
     */
    removeForceFromPlayer(source: Entity): void;
    /**
     * Push the player away from a point. Computes direction from
     * `fromPosition` to the player, applies falloff, and delegates
     * to applyImpulseToPlayer.
     *
     * If the player is exactly at `fromPosition`, pushes upward.
     *
     * @param fromPosition - world-space origin of the knockback (explosion center, enemy position, etc.)
     * @param magnitude - base impulse strength
     * @param radius - max distance of effect (default: Infinity)
     * @param falloff - how force decreases with distance (default: CONSTANT)
     */
    applyKnockbackToPlayer(fromPosition: Vector3Type, magnitude: number, radius?: number, falloff?: KnockbackFalloff): void;
    /**
     * Apply a continuous force to the player for a limited duration.
     * After `duration` seconds the force is automatically removed.
     * Calling again with the same source resets the timer.
     *
     * @param source - Entity key identifying this force source
     * @param duration - how long the force lasts, in seconds
     * @param vector - single `vector` whose length encodes the strength
     * or use overload for `direction` with a separate `magnitude` — the direction will be normalized before scaling.
     */
    applyForceToPlayerForDuration(source: Entity, duration: number, vector: Vector3Type): void;
    applyForceToPlayerForDuration(source: Entity, duration: number, direction: Vector3Type, magnitude: number): void;
    /**
     * Apply a continuous repulsion force that pushes the player away from a point,
     * recalculating direction every tick as the player moves.
     * Remove with `removeForceFromPlayer(source)`.
     *
     * Negative magnitude = attraction (pulls toward the source).
     *
     * @param source - Entity key identifying this force source
     * @param fromPosition - world-space origin of repulsion
     * @param magnitude - base force strength
     * @param radius - max distance of effect (default: Infinity)
     * @param falloff - how force decreases with distance (default: CONSTANT)
     */
    applyRepulsionForceToPlayer(source: Entity, fromPosition: Vector3Type, magnitude: number, radius?: number, falloff?: KnockbackFalloff): void;
}