mouse_state.h

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#pragma once
 
#include <engine/input/mouse_button.h>
#include <engine/public/util/point.h>
 
#include <map>
 
enum class MouseDirection : std::uint8_t {
  none,  
  up,    
  down,  
  left,  
  right  
};
 
struct MouseButtonState {
  bool current = false;  
  bool previous =
      false;  
 
  void reset();
};
 
struct MouseWheelState {
  float x_scroll = 0.0f;  
  float y_scroll = 0.0f;  
 
  float x_delta = 0.0f;  
  float y_delta = 0.0f;  
 
  MouseDirection last_scroll_direction = MouseDirection::none;
 
  void reset();
};
 
struct MouseState {
  // Cursor position in window coordinates.
  Point position = Point(0, 0);
 
  // Cursor movement delta since last frame.
  float delta_x = 0.0f;
  float delta_y = 0.0f;
 
  std::map<MouseButton, MouseButtonState> buttons;
  MouseWheelState wheel;
 
  void reset();
};