#ifndef CAMERA_SYSTEM_H_D52ADAD3
#define CAMERA_SYSTEM_H_D52ADAD3

#include "consts.h"
#include "system.h"
#include "vector.h"

class Game;

class CameraSystem : public System {
public:

  static constexpr SystemKey Key = SystemKey::Camera;

  CameraSystem(Game& game) : game_(game) {}

  const vec2i& getCameraPosition() const { return pos_; }

  const vec2i& getFieldOfView() const { return fov_; }

  void setFollowingSprite(int spriteId) { followingSprite_ = spriteId; }

  void lockCamera() { locked_ = true; }

  void unlockCamera() { locked_ = false; }

  void tick(double dt) override;

private:
  Game& game_;

  vec2i pos_;
  vec2i fov_ { CANVAS_WIDTH, CANVAS_HEIGHT };
  int followingSprite_;
  bool locked_ = true;
};

#endif /* end of include guard: CAMERA_SYSTEM_H_D52ADAD3 */