public override void OnUpdate()
            {
                WorldSide localSide = World_AIW2.Instance.GetLocalSide();

                if (localSide == null)
                {
                    return;
                }
                Planet                 planet           = Engine_AIW2.Instance.NonSim_GetPlanetBeingCurrentlyViewed();
                ArcenUI_ButtonSet      elementAsType    = (ArcenUI_ButtonSet)Element;
                Window_InGameBuildMenu windowController = (Window_InGameBuildMenu)Element.Window.Controller;

                if (windowController.EntityChangedSinceLastButtonSetUpdate_Menu)
                {
                    elementAsType.ClearButtons();

                    GameEntity entity = World_AIW2.Instance.GetEntityByID(windowController.EntityID);
                    if (entity != null)
                    {
                        List <BuildMenu> menus = entity.TypeData.BuildMenus;
                        int x = 0;
                        for (int i = 0; i < menus.Count; i++)
                        {
                            BuildMenu item = menus[i];
                            if (item.RequiresPresenceOf != null)
                            {
                                bool foundIt = false;
                                planet.Combat.DoForEntities(EntityRollupType.SpecialBuildMenuEnablers, delegate(GameEntity enabler)
                                {
                                    if (enabler.TypeData != item.RequiresPresenceOf)
                                    {
                                        return(DelReturn.Continue);
                                    }
                                    foundIt = true;
                                    return(DelReturn.Break);
                                });
                                if (!foundIt)
                                {
                                    continue;
                                }
                            }
                            bMenuSelectionItem newButtonController = new bMenuSelectionItem(entity.TypeData, i);
                            Vector2            offset;
                            offset.x = x * elementAsType.ButtonWidth;
                            offset.y = 0;
                            Vector2 size;
                            size.x = elementAsType.ButtonWidth;
                            size.y = elementAsType.ButtonHeight;
                            elementAsType.AddButton(newButtonController, size, offset);
                            x++;
                        }
                    }

                    elementAsType.ActuallyPutItemsBackInPoolThatAreStillCleared();

                    windowController.EntityChangedSinceLastButtonSetUpdate_Menu = false;
                    windowController.MenuIndexChangedSinceLastButtonSetUpdate   = true;
                }
            }
            public override void OnUpdate()
            {
                WorldSide localSide = World_AIW2.Instance.GetLocalSide();

                if (localSide == null)
                {
                    return;
                }
                ArcenUI_ButtonSet     elementAsType    = (ArcenUI_ButtonSet)Element;
                Window_InGameTechMenu windowController = (Window_InGameTechMenu)Element.Window.Controller;

                if (elementAsType.Buttons.Count <= 0)
                {
                    elementAsType.ClearButtons();

                    List <TechMenu> menus     = TechMenuTable.Instance.Rows;
                    int             menuIndex = 0;
                    for (int x = 0; x < menus.Count; x++)
                    {
                        TechMenu item = menus[x];
                        if (item.DoNotShowOnTechMenu)
                        {
                            continue;
                        }
                        bMenuSelectionItem newButtonController = new bMenuSelectionItem(x);
                        Vector2            offset;
                        offset.x = menuIndex * elementAsType.ButtonWidth;
                        offset.y = 0;
                        Vector2 size;
                        size.x = elementAsType.ButtonWidth;
                        size.y = elementAsType.ButtonHeight;
                        elementAsType.AddButton(newButtonController, size, offset);
                        menuIndex++;
                    }

                    windowController.MenuIndexChangedSinceLastButtonSetUpdate = true;
                }
            }