UI.h

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#pragma once
 
#include "RE/B/BSAtomic.h"
#include "RE/B/BSFixedString.h"
#include "RE/B/BSTArray.h"
#include "RE/B/BSTEvent.h"
#include "RE/B/BSTHashMap.h"
#include "RE/B/BSTSingleton.h"
#include "RE/B/BSTimer.h"
#include "RE/G/GPtr.h"
 
namespace RE
{
    class GFxMovieView;
    class IMenu;
    class MenuModeChangeEvent;
    class MenuOpenCloseEvent;
 
    namespace UIImpl
    {
        template <class, class = void>
        struct _has_menu_name :
            std::false_type
        {};
 
        template <class T>
        struct _has_menu_name<
            T,
            std::void_t<decltype(T::MENU_NAME)>> :
            std::true_type
        {};
 
        template <class T>
        struct has_menu_name :
            _has_menu_name<
                std::remove_cv_t<T>>
        {};
 
        template <class T>
        inline constexpr bool has_menu_name_v = has_menu_name<T>::value;
 
        template <class T>
        struct is_menu_ptr :
            std::is_convertible<
                std::remove_cv_t<T>,
                IMenu*>
        {};
 
        template <class T>
        inline constexpr bool is_menu_ptr_v = is_menu_ptr<T>::value;
    }
 
    class UI :
        public BSTSingletonSDM<UI>,                  // 000
        public BSTEventSource<MenuOpenCloseEvent>,   // 008
        public BSTEventSource<MenuModeChangeEvent>,  // 060
        public BSTEventSource<void*>                 // 0B8 MenuModeCounterChangedEvent/TutorialEvent
    {
    public:
        using Create_t = IMenu*();
 
        struct UIMenuEntry
        {
        public:
            // members
            GPtr<IMenu> menu;    // 00
            Create_t*   create;  // 08
        };
        static_assert(sizeof(UIMenuEntry) == 0x10);
 
        static UI* GetSingleton();
 
        template <class T>
        void AddEventSink(BSTEventSink<T>* a_sink);
        bool GameIsPaused();
        template <class T>
        BSTEventSource<T>* GetEventSource();
        GPtr<IMenu>        GetMenu(const std::string_view& a_menuName);
        GPtr<GFxMovieView> GetMovieView(const std::string_view& a_menuName);
        bool               IsApplicationMenuOpen() const;
        bool               IsCursorHiddenWhenTopmost() const;
        bool               IsItemMenuOpen() const;
        bool               IsMenuOpen(const std::string_view& a_menuName);
        bool               IsModalMenuOpen() const;
        bool               IsPauseMenuDisabled() const;
        bool               IsSavingAllowed() const;
        bool               IsShowingMenus() const;
        bool               IsUsingCustomRendering() const;
        void               Register(const std::string_view& a_menuName, Create_t* a_creator);
 
        template <class T>
        void RemoveEventSink(BSTEventSink<T>* a_sink);
        void ShowMenus(bool a_show);
 
        template <
            class T,
            std::enable_if_t<
                std::conjunction_v<
                    UIImpl::is_menu_ptr<T*>,
                    UIImpl::has_menu_name<T>>,
                int> = 0>
        GPtr<T> GetMenu()
        {
            return GPtr<T>(static_cast<T*>(GetMenu(T::MENU_NAME).get()));
        }
 
        template <
            class T,
            std::enable_if_t<
                UIImpl::is_menu_ptr_v<T*>,
                int> = 0>
        GPtr<T> GetMenu(const std::string_view& a_menuName)
        {
            return GPtr<T>(static_cast<T*>(GetMenu(a_menuName).get()));
        }
 
        // members
        BSTArray<GPtr<IMenu>>                  menuStack;                     // 110
        BSTHashMap<BSFixedString, UIMenuEntry> menuMap;                       // 128
        mutable BSSpinLock                     processMessagesLock;           // 158
        std::uint32_t                          numPausesGame;                 // 160 (= 0) += 1 if (imenu->flags & 0x00001)
        std::uint32_t                          numItemMenus;                  // 164 (= 0) += 1 if (imenu->flags & 0x02000)
        std::uint32_t                          numDisablePauseMenu;           // 168 (= 0) += 1 if (imenu->flags & 0x00080)
        std::uint32_t                          numAllowSaving;                // 16C (= 0) += 1 if (imenu->flags & 0x00800)
        std::uint32_t                          numDontHideCursorWhenTopmost;  // 170 (= 0) += 1 if (imenu->flags & 0x04000)
        std::uint32_t                          numCustomRendering;            // 174 (= 0) += 1 if (imenu->flags & 0x08000)
        std::uint32_t                          numApplicationMenus;           // 178 (= 0) += 1 if (imenu->flags & 0x20000)
        bool                                   modal;                         // 17C (= 0)  = 1 if (imenu->flags & 0x00010)
        std::uint8_t                           pad17D;                        // 17D
        std::uint16_t                          pad17E;                        // 17E
        BSTimer                                uiTimer;                       // 180
        bool                                   menuSystemVisible;             // 1C0
        bool                                   closingAllMenus;               // 1C1
        std::uint16_t                          pad1C2;                        // 1C2
        std::uint32_t                          pad1C4;                        // 1C4
    };
    static_assert(sizeof(UI) == 0x1C8);
 
    template <class T>
    void UI::AddEventSink(BSTEventSink<T>* a_sink)
    {
        GetEventSource<T>()->AddEventSink(a_sink);
    }
 
    template <class T>
    BSTEventSource<T>* UI::GetEventSource()
    {
        return static_cast<BSTEventSource<T>*>(this);
    }
 
    template <class T>
    inline void UI::RemoveEventSink(BSTEventSink<T>* a_sink)
    {
        GetEventSource<T>()->RemoveEventSink(a_sink);
    }
}