import { Cosmic, System, Entity } from "@cosmic/core";
import { Transform, PlayerControlled } from "@cosmic/kit/components";

export class PlayerControlSystem extends System {
  public requiredComponents = new Set([Transform.name, PlayerControlled.name]);

  constructor(private engine: Cosmic) {
    super();
  }

  update(entities: Entity[], deltaTime: number): void {
    const input = this.engine.input;

    entities.forEach((entity) => {
      const transform = entity.getComponent(Transform)!;
      const playerControlled = entity.getComponent(PlayerControlled)!;

      if (input.isKeyDown(playerControlled.inputUp))
        transform.y -= playerControlled.speed * deltaTime;
      if (input.isKeyDown(playerControlled.inputDown))
        transform.y += playerControlled.speed * deltaTime;
      if (input.isKeyDown(playerControlled.inputLeft))
        transform.x -= playerControlled.speed * deltaTime;
      if (input.isKeyDown(playerControlled.inputRight))
        transform.x += playerControlled.speed * deltaTime;
    });
  }
}