InputManager.h

#ifndef NTA_INPUTMANAGER_H_INCLUDED
#define NTA_INPUTMANAGER_H_INCLUDED
 
#include <glm/glm.hpp>
#include <SDL2/SDL.h>
#include <unordered_map>
 
namespace nta {
    class ScreenManager;
    class CreateInputManagerKey {
        friend class ScreenManager;
        CreateInputManagerKey() {}
        CreateInputManagerKey(const CreateInputManagerKey&);
        CreateInputManagerKey& operator=(const CreateInputManagerKey&);
    };
    enum MouseWheelMotion{STATIONARY = 0, SCROLL_UP = 1, SCROLL_DOWN = -1};
    class InputManager {
    public:
        using key_type = unsigned int;
    private:
        std::unordered_map<key_type, bool> m_keyMap;
        std::unordered_map<key_type, bool> m_prevKeyMap;
        glm::vec2 m_mouseCoords;
        MouseWheelMotion m_mouseWheelMotion;
    public:
        InputManager(CreateInputManagerKey) {}
        glm::vec2 getMouseCoords() const;
        glm::vec2 getMouseCoordsStandard(int height) const;
        MouseWheelMotion getMouseWheelMotion() const;
        bool isPressed(key_type key) const;
        bool justPressed(key_type key) const;
        bool justReleased(key_type key) const;
        void pressKey(key_type key);
        void releaseKey(key_type key);
        void setMouseCoords(float x, float y);
        void setMouseWheelMotion(const MouseWheelMotion& motion);
        void update(SDL_Event& event);
        void update_keys(SDL_Event& event);
        void update_mouse(SDL_Event& event);
        void updatePrev();
    };
}
 
#endif // NTA_INPUTMANAGER_H_INCLUDED