view.h

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#ifndef VIEW_H
#define VIEW_H
 
#ifndef LOGIC_ONLY
 
#include "delta_t.h"
#include "program_state.h"
 
#include <SFML/Window/Event.hpp>
 
#include <optional>
 
class view
{
public:
  view();
  virtual ~view();
 
  void clear_next_state();
 
  void draw();
 
  const auto& get_next_state() const noexcept { return m_next_state; }
 
  bool is_active() const noexcept { return m_is_active; }
 
  bool process_event(sf::Event& e);
 
  void process_resize_event(sf::Event& event);
 
  void set_is_active(const bool is_active);
 
  void set_next_state(const program_state next_state);
 
  void start();
 
  void stop();
 
  void tick(const delta_t dt);
 
private:
 
  bool m_is_active{false};
 
  std::optional<program_state> m_next_state;
 
  virtual void draw_impl() = 0;
 
  virtual bool process_event_impl(sf::Event& e) = 0;
 
  virtual void process_resize_event_impl(sf::Event& event) = 0;
 
  virtual void start_impl() = 0;
 
  virtual void stop_impl() = 0;
 
  virtual void tick_impl(const delta_t dt) = 0;
 
};
 
#endif // LOGIC_ONLY
 
#endif // VIEW_H