i_input_provider.h

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#pragma once
 
#include <engine/input/i_input.h>
#include <engine/input/key_code.h>
#include <engine/input/mouse_button.h>
#include <engine/input/mouse_state.h>
#include <engine/public/util/point.h>
 
#include <cstddef>
#include <memory>
#include <optional>
#include <utility>
 
class IInputProvider {
 public:
  virtual ~IInputProvider() = default;
 
  void set_input(std::unique_ptr<IInput> input);
  [[nodiscard]] std::optional<std::reference_wrapper<IInput>> input() const;
 
  [[nodiscard]] virtual bool is_key_held(KeyCode key) const = 0;
 
  [[nodiscard]] virtual bool is_key_pressed(KeyCode key) const = 0;
 
  [[nodiscard]] virtual KeyCode get_pressed_key() const = 0;
 
  [[nodiscard]] virtual bool is_key_released(KeyCode key) const = 0;
 
  [[nodiscard]] virtual bool any_key_held() const = 0;
 
  [[nodiscard]] virtual bool any_key_pressed() const = 0;
 
  [[nodiscard]] virtual bool any_key_released() const = 0;
 
  [[nodiscard]] virtual bool is_mouse_held(MouseButton button) const = 0;
 
  [[nodiscard]] virtual bool is_mouse_pressed(MouseButton button) const = 0;
 
  [[nodiscard]] virtual bool is_mouse_released(MouseButton button) const = 0;
 
  [[nodiscard]] virtual bool any_mouse_held() const = 0;
 
  [[nodiscard]] virtual bool any_mouse_pressed() const = 0;
 
  [[nodiscard]] virtual bool any_mouse_released() const = 0;
 
  [[nodiscard]] virtual const Point& mouse_position() const = 0;
 
  // TODO: Replace std::pair<float, float> with a dedicated Vector2 type for
  // clearer semantics and math operations.
  [[nodiscard]] virtual std::pair<float, float> mouse_delta() const = 0;
 
  [[nodiscard]] virtual bool mouse_moved() const = 0;
 
  // TODO: Replace std::pair<float, float> with a dedicated Vector2 type for
  // clearer semantics and math operations.
  [[nodiscard]] virtual std::pair<float, float> mouse_scroll() const = 0;
 
  // TODO: Replace std::pair<float, float> with a dedicated Vector2 type for
  // clearer semantics and math operations.
  [[nodiscard]] virtual std::pair<float, float> mouse_scroll_delta() const = 0;
 
  [[nodiscard]] virtual MouseDirection mouse_scroll_direction() const = 0;
 
  virtual void reset_state() = 0;
 
  virtual void register_events() = 0;
 
  virtual void update() = 0;
 
 private:
  std::unique_ptr<IInput> input_;
};