qzdoom/wadsrc/static/zscript/menu/menu.txt

struct KeyBindings native
{
	native static String NameKeys(int k1, int k2);

	native int, int GetKeysForCommand(String cmd);
	native void SetBind(int key, String cmd);
	native void UnbindACommand (String str);
}

struct OptionValues native
{
	native static int GetCount(Name group);
	native static String GetText(Name group, int index);
	native static double GetValue(Name group, int index);
	native static String GetTextValue(Name group, int index);
}

struct JoystickConfig native
{
	enum EJoyAxis
	{
		JOYAXIS_None = -1,
		JOYAXIS_Yaw,
		JOYAXIS_Pitch,
		JOYAXIS_Forward,
		JOYAXIS_Side,
		JOYAXIS_Up,
	//	JOYAXIS_Roll,		// Ha ha. No roll for you.
		NUM_JOYAXIS,
	};

	native float GetSensitivity();
	native void SetSensitivity(float scale);

	native float GetAxisScale(int axis);
	native void SetAxisScale(int axis, float scale);

	native float GetAxisDeadZone(int axis);
	native void SetAxisDeadZone(int axis, float zone);
	
	native int GetAxisMap(int axis);
	native void SetAxisMap(int axis, int gameaxis);
}

class Menu : Object native
{
	enum EMenuKey
	{
		MKEY_Up,
		MKEY_Down,
		MKEY_Left,
		MKEY_Right,
		MKEY_PageUp,
		MKEY_PageDown,
		MKEY_Enter,
		MKEY_Back,
		MKEY_Clear,
		NUM_MKEYS,

		// These are not buttons but events sent from other menus 

		MKEY_Input,
		MKEY_Abort,
		MKEY_MBYes,
		MKEY_MBNo,
	}

	enum EMenuMouse
	{
		MOUSE_Click,
		MOUSE_Move,
		MOUSE_Release
	};

	enum EMenuState
	{
		Off,			// Menu is closed
		On,				// Menu is opened
		WaitKey,		// Menu is opened and waiting for a key in the controls menu
		OnNoPause,		// Menu is opened but does not pause the game
	};

	native Menu mParentMenu;

	void Init(Menu parent)
	{
		mParentMenu = parent;
	}
	
	native static int MenuTime();
	native static void SetVideoMode();
	native static Menu GetCurrentMenu();
	native static JoystickConfig GetCurrentJoystickConfig();
	native static void SetMenu(Name mnu, int param = 0);
	native static void StartMessage(String msg, int mode = 0, Name command = 'none');
	
	virtual bool TranslateKeyboardEvents() { return true; }
	virtual void SetFocus(MenuItemBase fc) {}
	virtual bool CheckFocus(MenuItemBase fc) { return false;  }
	virtual void ReleaseFocus() {}
	virtual void ResetColor() {}

	native virtual bool Responder(InputEvent ev);
	native virtual bool MenuEvent (int mkey, bool fromcontroller);
	native virtual bool MouseEvent(int type, int mx, int my);
	native virtual void Drawer();
	native void Close();
	native MenuItemBase GetItem(Name n);
	native void ActivateMenu();
	
	static void MenuSound(Sound snd)
	{
		S_Sound (snd, CHAN_VOICE | CHAN_UI, snd_menuvolume, ATTN_NONE);
	}
	
	static void DrawConText (int color, int x, int y, String str)
	{
		screen.DrawText (ConFont, color, x, y, str, DTA_CellX, 8 * CleanXfac_1, DTA_CellY, 8 * CleanYfac_1);
	}

}

class MenuDescriptor : Object native
{
	native Name mMenuName;
	native String mNetgameMessage;
	native Class<Menu> mClass;

	native static MenuDescriptor GetDescriptor(Name n);
}

class ListMenuDescriptor : MenuDescriptor native
{
	native Array<ListMenuItem> mItems;
	native int mSelectedItem;
	native int mSelectOfsX;
	native int mSelectOfsY;
	native TextureID mSelector;
	native int mDisplayTop;
	native int mXpos, mYpos;
	native int mWLeft, mWRight;
	native int mLinespacing;	// needs to be stored for dynamically created menus
	native int mAutoselect;	// this can only be set by internal menu creation functions
	native Font mFont;
	native int mFontColor;
	native int mFontColor2;
	native bool mCenter;

	void Reset()
	{
		// Reset the default settings (ignore all other values in the struct)
		mSelectOfsX = 0;
		mSelectOfsY = 0;
		mSelector.SetInvalid();
		mDisplayTop = 0;
		mXpos = 0;
		mYpos = 0;
		mLinespacing = 0;
		mNetgameMessage = "";
		mFont = NULL;
		mFontColor = Font.CR_UNTRANSLATED;
		mFontColor2 = Font.CR_UNTRANSLATED;
	}
}

struct FOptionMenuSettings
{
	int mTitleColor;
	int mFontColor;
	int mFontColorValue;
	int mFontColorMore;
	int mFontColorHeader;
	int mFontColorHighlight;
	int mFontColorSelection;
	int mLinespacing;
}

class OptionMenuDescriptor : MenuDescriptor native
{
	native Array<OptionMenuItem> mItems;
	native String mTitle;
	native int mSelectedItem;
	native int mDrawTop;
	native int mScrollTop;
	native int mScrollPos;
	native int mIndent;
	native int mPosition;
	native bool mDontDim;

	native void CalcIndent();
	//native OptionMenuItem GetItem(Name iname);
	void Reset()
	{
		// Reset the default settings (ignore all other values in the struct)
		mPosition = 0;
		mScrollTop = 0;
		mIndent = 0;
		mDontDim = 0;
	}
}

class OptionMenu : Menu native
{
	native OptionMenuDescriptor mDesc;
	native bool CanScrollUp;
	native bool CanScrollDown;
	native int VisBottom;
	native OptionMenuItem mFocusControl;

	//=============================================================================
	//
	//
	//
	//=============================================================================

	virtual void Init(Menu parent, OptionMenuDescriptor desc)
	{
		mParentMenu = parent;
		mDesc = desc;
		if (mDesc != NULL && mDesc.mSelectedItem == -1) mDesc.mSelectedItem = FirstSelectable();

	}

	//=============================================================================
	//
	//
	//
	//=============================================================================

	int FirstSelectable()
	{
		if (mDesc != NULL)
		{
			// Go down to the first selectable item
			int i = -1;
			do
			{
				i++;
			}
			while (i < mDesc.mItems.Size() && !mDesc.mItems[i].Selectable());
			if (i>=0 && i < mDesc.mItems.Size()) return i;
		}
		return -1;
	}

	
	override void SetFocus(MenuItemBase fc)
	{
		mFocusControl = OptionMenuItem(fc);
	}
	
	override bool CheckFocus(MenuItemBase fc)
	{
		return mFocusControl == fc;
	}
	
	override void ReleaseFocus()
	{
		mFocusControl = NULL;
	}
	
	
}