input.hpp

// SPDX-License-Identifier: MIT
#ifndef LIBSBX_DEVICES_INPUT_HPP_
#define LIBSBX_DEVICES_INPUT_HPP_
 
#include <cinttypes>
#include <unordered_map>
 
#include <GLFW/glfw3.h>
 
#include <libsbx/utility/bitmask.hpp>
 
#include <libsbx/math/vector2.hpp>
 
#include <libsbx/devices/key.hpp>
#include <libsbx/devices/mouse_button.hpp>
#include <libsbx/devices/input_action.hpp>
#include <libsbx/devices/input_mod.hpp>
 
namespace sbx::devices {
 
struct key_state {
  input_action action;
  input_action last_action;
}; // struct key_state
 
class input {
 
  friend class devices_module;
  friend class window;
 
public:
 
  input() = delete;
 
  static auto is_key_pressed(key key) -> bool;
  static auto is_key_down(key key) -> bool;
  static auto is_key_released(key key) -> bool;
 
  static auto is_mouse_button_pressed(mouse_button button) -> bool;
  static auto is_mouse_button_down(mouse_button button) -> bool;
  static auto is_mouse_button_released(mouse_button button) -> bool;
 
  static auto mouse_position() -> math::vector2;
 
  static auto mouse_window_position() -> math::vector2;
 
  static auto scroll_delta() -> math::vector2;
 
  static auto set_active_viewport(const math::vector2& origin, const math::vector2& size) -> void;
 
  static auto active_viewport_origin() -> math::vector2;
 
  static auto active_viewport_size() -> math::vector2;
 
  static auto set_scene_input_active(bool active) -> void;
 
  static auto is_scene_input_active() -> bool;
 
private:
 
  static auto _transition_pressed_keys() -> void;
  static auto _transition_pressed_mouse_buttons() -> void;
  static auto _transition_scroll_delta() -> void;
 
  static auto _update_key_state(key key, input_action action) -> void;
  static auto _update_mouse_button_state(mouse_button button, input_action action) -> void;
  static auto _update_mouse_position(const math::vector2& position) -> void;
  static auto _update_scroll_delta(const math::vector2& delta) -> void;
 
  static std::unordered_map<key, key_state> _key_states;
  static std::unordered_map<mouse_button, key_state> _mouse_button_states;
 
  static math::vector2 _mouse_window_position;
  static math::vector2 _scroll_delta;
 
  static math::vector2 _active_viewport_origin;
  static math::vector2 _active_viewport_size;
 
  static bool _is_active;
  static bool _is_captured;
 
}; // class input
 
} // namespace sbx::devices
 
#endif // LIBSBX_DEVICES_INPUT_HPP_