import System from '../core/System.js';
import type GameObject from '../core/GameObject.js';
/**
 * A system that processes entities with PhysicsComponents.
 * Handles movement, velocity, acceleration, and automatic collision resolution.
 */
export default class PhysicsSystem extends System {
    /**
     * Updates the position of entities and resolves collisions.
     * @param entities All game objects.
     * @param fixedDelta The fixed time step.
     */
    fixedUpdate(entities: Set<GameObject>, fixedDelta: number): void;
}