import type { World } from '../World';

/** A simulation step that runs every tick over the world's entities (collisions, behavior graphs, …). */
export interface System {
  start?(world: World): void;
  update(world: World, dt: number): void;
  /** Ticked in a frame a behavior paused as well (#167); the others stand still in it. */
  runsWhilePaused?: boolean;
  stop?(world: World): void;
}