RadialMenu.c

См. документацию.

enum RadialMenuControlType
{
    MOUSE,
    CONTROLLER    
}
 
class RadialMenu : ScriptedWidgetEventHandler
{
    protected Widget                  m_Parent;
    protected Widget                  m_ItemCardsContainer;
    protected Widget                  m_RadialSelector;
    protected ImageWidget               m_RadialSelectorImage;
    protected ImageWidget               m_RadialSelectorPointerImage;
    protected int                       m_RadialSelectorOriginalColor;
    protected int                       m_RadialSelectorDisabledColor;
    protected Widget                  m_SelectedObject;
    protected ref map<Widget, float>  m_RadialItemCards;
    
    protected float                     m_AngleRadOffset;
    protected ref Timer                m_UpdateTimer;
    
    //widget
    static const string                 RADIAL_SELECTOR              = "RadialSelector";
    static const string                 RADIAL_SELECTOR_IMAGE      = "SelectorImage";
    static const string                 RADIAL_SELECTOR_POINTER      = "SelectorPointer";
    static const string                 RADIAL_DELIMITER_CONTAINER    = "RadialDelimiterContainer";
    static const string                 RADIAL_ITEM_CARD_CONTAINER    = "RadialItemCardContainer";
 
    //controls
    protected RadialMenuControlType    m_ControlType;
    private UAIDWrapper              m_SelectInputWrapper;
    private UAIDWrapper              m_BackInputWrapper;
    protected float                     m_ControllerAngle;
    protected float                     m_ControllerTilt;
 
    //controller
    protected int                       m_ControllerTimout;
    protected bool                      m_IsControllerTimoutEnabled      = true;         //enables/disables controller deselect timeout reset
    protected const float               CONTROLLER_DESELECT_TIMEOUT      = 1000;         //timeout [ms] after which selection is automatically deselect when controller is not active
    protected const float               CONTROLLER_TILT_TRESHOLD_SELECT      = 0.8;          //tilt value (0.0-1.0) for controller sticks after which the selection will be selected
    protected const float               CONTROLLER_TILT_TRESHOLD_EXECUTE    = 1.0;          //tilt value (0.0-1.0) for controller sticks after which the selection will be executed 
    
    //mouse
    protected bool                      m_WidgetInitialized;
    protected const float               MOUSE_SAFE_ZONE_RADIUS = 120;     //Radius [px] of safe zone where every previous selection is deselected
    
    //References
    protected float                     m_RadiusOffset;                   //Radius [% of the main container size]
    protected float                     m_ExecuteDistanceOffset;     //Distance offset [% of the main container size] after which the selection will be automatically executed
    protected float                     m_OffsetFromTop;             //first item in the menu won't be directly on top but offset by a rad angle value (clock-wise)
    protected float                     m_ItemCardRadiusOffset;           //Radius [% of the main container size] for item cards
    protected string                    m_DelimiterLayout;             //layout file name with path
    
    ref UIScriptedMenu                    m_RegisteredClass; 
    ref static RadialMenu             m_Instance;
    
    /*
    
            RADIAL MENU EVENTS
    
    Mouse:
        OnMouseSelect
        OnMouseDeselect
        OnMouseExecute - unused, press events used instead
        OnMousePressLeft
        OnMousePressRight
    
    Controller:
        OnControllerSelect
        OnControllerDeselect
        OnControllerExecute - unused, press events used instead
        OnControllerPressSelect
        OnControllerPressBack
    
    Common:
        OnControlsChanged       - controls has been changed (mouse<->controller)
    
    */
    
    
    //============================================
    // RadialMenu
    //============================================
    void RadialMenu()
    {
        m_Instance = this;
        
        //set default control type
#ifdef PLATFORM_CONSOLE
        Input inp = GetGame().GetInput();
        if (inp && inp.IsEnabledMouseAndKeyboardEvenOnServer())
        {
            m_ControlType = RadialMenuControlType.MOUSE;
        }
        else
        {
            m_ControlType = RadialMenuControlType.CONTROLLER;
        }
#endif
#ifdef PLATFORM_WINDOWS
        m_ControlType = RadialMenuControlType.MOUSE;
#endif
        
        m_SelectInputWrapper = GetUApi().GetInputByID(UAUISelect).GetPersistentWrapper();
        m_BackInputWrapper= GetUApi().GetInputByID(UAUIBack).GetPersistentWrapper();
        
        //radial cards
        m_RadialItemCards = new map<Widget, float>;
        m_UpdateTimer = new Timer();
        m_UpdateTimer.Run(0.01, this, "Update", NULL, true);
    }
 
    void ~RadialMenu()
    {
    }
    
    static RadialMenu GetInstance()
    {
        return m_Instance;
    }
    
    //Set handler
    void OnWidgetScriptInit(Widget w)
    {
        m_ItemCardsContainer = w.FindAnyWidget(RADIAL_ITEM_CARD_CONTAINER);
        m_RadialSelector = w.FindAnyWidget(RADIAL_SELECTOR);
        m_RadialSelectorImage = ImageWidget.Cast(m_RadialSelector.FindAnyWidget(RADIAL_SELECTOR_IMAGE));
        m_RadialSelectorPointerImage = ImageWidget.Cast(m_RadialSelector.FindAnyWidget(RADIAL_SELECTOR_POINTER));
        
        m_RadialSelectorOriginalColor = m_RadialSelectorImage.GetColor();
        m_RadialSelectorDisabledColor = ARGB(255,150,150,150);
        
        //parent
        m_Parent = w;
        m_Parent.SetHandler(this);
    }
 
    //controls
    void SetControlType(RadialMenuControlType type)
    {
        if (m_ControlType != type)
        {
            m_ControlType = type;
            GetGame().GameScript.CallFunction(m_RegisteredClass, "OnControlsChanged", NULL, type);
        }
    }
    
    bool IsUsingMouse()
    {
        if (m_ControlType == RadialMenuControlType.MOUSE)
        {
            return true;
        }
        
        return false;
    }
 
    bool IsUsingController()
    {
        if (m_ControlType == RadialMenuControlType.CONTROLLER)
        {
            return true;
        }
        
        return false;
    }
    
    void SetWidgetInitialized(bool state)
    {
        m_WidgetInitialized = state;
    }
    
    bool IsWidgetInitialized()
    {
        return m_WidgetInitialized;
    }
            
    //============================================
    // Setup
    //============================================  
    void RegisterClass(UIScriptedMenu class_name)
    {
        m_RegisteredClass = class_name;
        if (m_UpdateTimer && !m_UpdateTimer.IsRunning())
            m_UpdateTimer.Run(0.01, this, "Update", NULL, true);
    }   
 
    //Set radial menu parameters
    //Radius offset [% of the main container size]
    void SetRadiusOffset(float radius_offset)
    {
        m_RadiusOffset = radius_offset;
    }
    
    //Distance offset [% of the main container size] after which the selection will be automatically executed
    void SetExecuteDistOffset(float execute_dist_offset)
    {
        m_ExecuteDistanceOffset  = execute_dist_offset;
    }
    
    //First item in the menu won't be directly on top but offset by a rad angle value (clock-wise)
    void SetOffsetFromTop(float offset_from_top)
    {
        m_OffsetFromTop  = offset_from_top;
    }
    
    //Radius [% of the main container size] for item cards  
    void SetItemCardRadiusOffset(float item_card_radius_offset)
    {
        m_ItemCardRadiusOffset = item_card_radius_offset;
    }
    
    //Enable/Disable controller timeout
    void ActivateControllerTimeout(bool state)
    {
        m_IsControllerTimoutEnabled = state;
    }
    
    void SetWidgetProperties(string delimiter_layout)
    {
        m_DelimiterLayout = delimiter_layout;
    }
    
    //============================================
    // Visual
    //============================================  
    //hide_selector => shows/hides radial selector when refreshing radial menu
    void Refresh(bool hide_selector = true)
    {
        int item_cards_count = GetItemCardsCount();
        if (item_cards_count > 0)
            m_AngleRadOffset = 2 * Math.PI / item_cards_count;        
        float angle_rad = -Math.PI / 2;
        
        //--PARAM top offset--
        if (m_OffsetFromTop != 0)
        {
            angle_rad = angle_rad + m_OffsetFromTop;
        }
        //--------------------
        
        //delete all delimiters
        Widget delimiters_panel = m_Parent.FindAnyWidget(RADIAL_DELIMITER_CONTAINER);
        if (delimiters_panel)
        {
            Widget del_child = delimiters_panel.GetChildren();
            while (del_child)
            {
                Widget child_to_destroy1 = del_child;
                del_child = del_child.GetSibling();
                
                delete child_to_destroy1;
            }
        }
        
        //Position item cards, crate radial delimiters
        Widget item_cards_panel = m_Parent.FindAnyWidget(RADIAL_ITEM_CARD_CONTAINER);
        Widget item_card = item_cards_panel.GetChildren();
        
        //get radius
        float original_r = GetRadius();
        float item_cards_r = original_r;
        
        //--PARAM top offset--....
        if (m_ItemCardRadiusOffset != 0)
        {
            item_cards_r = item_cards_r * m_ItemCardRadiusOffset;
            if (item_cards_r < 0) item_cards_r = 0;             //min radius is 0
        }
        
        m_RadialItemCards.Clear();
        for (int i = 0; i < item_cards_count; ++i)
        {
            //position item cards
            if (item_card)
            {
                //creates circle from simple widget items
                float pos_x = item_cards_r * Math.Cos(angle_rad);
                float pos_y = item_cards_r * Math.Sin(angle_rad);
                
                pos_x = pos_x / original_r;
                pos_y = pos_y / original_r;
                
                item_card.SetPos(pos_x, pos_y);
                
                //store item card
                m_RadialItemCards.Insert(item_card, angle_rad);
                
                //get next child
                item_card = item_card.GetSibling();
            }
            //-------------------------
            
            //create delimiter
            if (item_cards_count > 1 && delimiters_panel && m_DelimiterLayout)
            {
                Widget delimiter_widget = GetGame().GetWorkspace().CreateWidgets(m_DelimiterLayout, delimiters_panel);
                float delim_angle_rad = angle_rad + (m_AngleRadOffset / 2);
                delimiter_widget.SetPos(0, 0);
                delimiter_widget.SetRotation(0, 0, GetAngleInDegrees(delim_angle_rad) + 90);
            }
                        
            //calculate next angle
            angle_rad += m_AngleRadOffset;
        }
        
        //hide selector on refresh
        if (hide_selector)
        {
            HideRadialSelector();
        }
    }
 
    //Radial selector
    protected void ShowRadialSelector(Widget selected_item)
    {
        if (m_RadialSelector && selected_item)
        {
            int item_count = m_RadialItemCards.Count();
            if (item_count > 1)
            {
                int angle_deg = GetAngleInDegrees(m_RadialItemCards.Get(selected_item));
                m_RadialSelector.SetRotation(0, 0, angle_deg + 90);         //rotate widget according to its desired rotation
                
                //set radial selector size
                float progress = (1 / item_count) * 2;
                m_RadialSelectorImage.SetMaskProgress(progress);
                
                m_RadialSelector.Show(true);
                
                bool grey_selector = selected_item.GetFlags() & WidgetFlags.DISABLED;
                if (!grey_selector)
                {
                    m_RadialSelectorImage.SetColor(m_RadialSelectorDisabledColor);
                    m_RadialSelectorPointerImage.SetColor(m_RadialSelectorDisabledColor);
                }
                else
                {
                    m_RadialSelectorImage.SetColor(m_RadialSelectorOriginalColor);
                    m_RadialSelectorPointerImage.SetColor(m_RadialSelectorOriginalColor);
                }
            }
        }
    }
    
    protected void HideRadialSelector()
    {
        if (m_RadialSelector)
        {
            m_RadialSelector.Show(false);
        }
    }
    
    //============================================
    // Widget size calculations
    //============================================  
    protected int GetItemCardsCount()
    {
        Widget child = m_ItemCardsContainer.GetChildren();
        int count = 0;
        
        while (child)
        {
            ++count;
            
            child = child.GetSibling();
        }
        
        return count;
    }
    
    protected float GetRadius()
    {
        float radius = Math.AbsFloat(GetParentMinSize() * 0.5);
        
        //PARAM --radius--
        if (m_RadiusOffset > 0)
        {
            return radius * m_RadiusOffset;
        }
        //----------------
        
        return radius;
    }
    
    protected void GetParentCenter(out float center_x, out float center_y)
    {
        if (m_Parent)
        {
            float wx;
            float wy;
            m_Parent.GetScreenPos(wx, wy);
            
            float ww;
            float wh;
            m_Parent.GetScreenSize(ww, wh);
            
            center_x = wx + ww / 2; //center
            center_y = wy + wh / 2;
        }
    }
    
    protected float GetParentMinSize()
    {
        if (m_Parent)
        {
            float size_x;
            float size_y;
            m_Parent.GetScreenSize(size_x, size_y);
            
            return Math.Min(size_x, size_y);
        }
        
        return 0;
    }
 
    //============================================
    // Angle calculations
    //============================================  
    //get object by angle (degrees)
    protected Widget GetObjectByDegAngle(float deg_angle)
    {
        for (int i = 0; i < m_RadialItemCards.Count(); ++i)
        {
            Widget w = m_RadialItemCards.GetKey(i);
            float w_angle = GetAngleInDegrees(m_RadialItemCards.Get(w));
            float offset = GetAngleInDegrees(m_AngleRadOffset) / 2;
            float min_angle = w_angle - offset;
            float max_angle = w_angle + offset;
            
            if (min_angle < 0) min_angle += 360;    //clamp 0-360
            if (max_angle > 360) max_angle -= 360;
            
            if (min_angle > max_angle)      //angle radius is in the cycling point 360->
            {
                if (min_angle <= deg_angle) //is cursor position also before this point
                {
                    if (deg_angle > max_angle)
                    {
                        return w;
                    }
                }
                else                            //is cursor position after this point
                {
                    if (deg_angle < max_angle)
                    {
                        return w;
                    }
                }
            }
            else
            {
                if (deg_angle >= min_angle && deg_angle < max_angle)    //min, max angles are within 0-360 radius
                {
                    return w;
                }               
            }
        }
        
        return NULL;
    }
    
    //returns GUI compatible mouse-to-parent angle
    protected float GetMousePointerAngle()
    {
        int mouse_x;
        int mouse_y;
        GetMousePos(mouse_x, mouse_y);
        
        float center_x;
        float center_y;
        GetParentCenter(center_x, center_y);
 
        float tan_x = mouse_x - center_x;
        float tan_y = mouse_y - center_y;
        float angle = Math.Atan2(tan_y, tan_x);
        
        return angle;
    }
    
    //returns distance from parent center
    protected float GetMouseDistance()
    {
        int mouse_x;
        int mouse_y;
        GetMousePos(mouse_x, mouse_y);
        
        float center_x;
        float center_y;
        GetParentCenter(center_x, center_y);
 
        float distance = vector.Distance(Vector(mouse_x, mouse_y, 0), Vector(center_x, center_y, 0));
        
        return distance;
    }
    
    //return angle 0-360 deg
    protected float GetAngleInDegrees(float rad_angle)
    {
        float rad_deg = rad_angle * Math.RAD2DEG;
        
        int angle_mp = rad_deg / 360;
        
        if (rad_deg < 0)
        {
            rad_deg = rad_deg - (360 * angle_mp);
            rad_deg += 360;
        }
        
        return rad_deg;
    }
 
    //============================================
    // Update
    //============================================
    //mouse
    int last_time = -1;
    protected void Update()
    {
        if (this && !m_RegisteredClass)
        {
            m_UpdateTimer.Stop();
            return;
        }
        
        //get delta time
        if (last_time < 0)
        {
            last_time = GetGame().GetTime();
        }
        int delta_time = GetGame().GetTime() - last_time;
        last_time = GetGame().GetTime();
        
        //controls
        if (this && m_RegisteredClass && m_RegisteredClass.IsVisible())
        {
            //mouse controls
            if (IsUsingMouse() && m_WidgetInitialized)
            {
                float mouse_angle = GetMousePointerAngle();
                float mouse_distance = GetMouseDistance();
                
                //--PARAM --safe zone radius--
                if (mouse_distance <= MOUSE_SAFE_ZONE_RADIUS)
                {
                    //Deselect
                    GetGame().GameScript.CallFunction(m_RegisteredClass, "OnMouseDeselect", NULL, m_SelectedObject);
                    m_SelectedObject = NULL;
                    //hide selector
                    HideRadialSelector();
                }
                else
                {
                    //Deselect
                    GetGame().GameScript.CallFunction(m_RegisteredClass, "OnMouseDeselect", NULL, m_SelectedObject);
                    
                    //Select
                    m_SelectedObject = GetObjectByDegAngle(GetAngleInDegrees(mouse_angle));
                    GetGame().GameScript.CallFunction(m_RegisteredClass, "OnMouseSelect", NULL, m_SelectedObject);                
                    //show selector
                    ShowRadialSelector(m_SelectedObject);
                }
            }
            //controller controls
            else if (IsUsingController())
            {
                UpdataControllerInput();
                
                //Controller tilt
                if (m_ControllerAngle > -1 && m_ControllerTilt > -1)
                {
                    //Right analogue stick
                    Widget w_selected = GetObjectByDegAngle(m_ControllerAngle);
                    //Select
                    if (w_selected)
                    {
                        if (w_selected != m_SelectedObject)
                        {
                            if (m_ControllerTilt >= CONTROLLER_TILT_TRESHOLD_SELECT)
                            {
                                //Deselect
                                GetGame().GameScript.CallFunction(m_RegisteredClass, "OnControllerDeselect", NULL, m_SelectedObject);
                            
                                //Select new object
                                m_SelectedObject = w_selected;
                                GetGame().GameScript.CallFunction(m_RegisteredClass, "OnControllerSelect", NULL, m_SelectedObject);
                                //show selector
                                ShowRadialSelector(m_SelectedObject);
                            }
                        }
                    }
                    else
                    {
                        GetGame().GameScript.CallFunction(m_RegisteredClass, "OnControllerDeselect", NULL, m_SelectedObject);
                        m_SelectedObject = NULL;
                        //hide selector
                        HideRadialSelector();                     
                    }       
                }
                //if controller is giving no feedback
                else
                {
                    if (m_IsControllerTimoutEnabled)
                    {
                        m_ControllerTimout += delta_time;
                        
                        if (m_ControllerTimout >= CONTROLLER_DESELECT_TIMEOUT)
                        {
                            GetGame().GameScript.CallFunction(m_RegisteredClass, "OnControllerDeselect", NULL, m_SelectedObject);
                            m_SelectedObject = NULL;
                            //hide selector
                            HideRadialSelector();                     
                            
                            m_ControllerTimout = 0;       //reset controller timeout
                        }
                    }
                }
                
                m_ControllerAngle = -1;                //reset angle and tilt
                m_ControllerTilt = -1;
            }
            
            m_WidgetInitialized = true;
        }
    }
    
    float NormalizeInvertAngle(float angle)
    {
        float new_angle = 360 - angle;
        int angle_mp = new_angle / 360;
            
        new_angle = new_angle - (360 * angle_mp);
            
        return new_angle;
    }
    
    //============================================
    // Controls
    //============================================
    void UpdataControllerInput()
    {
        Input input = GetGame().GetInput();
        
        //Controller radial
        float angle;
        float tilt;
        input.GetGamepadThumbDirection(GamepadButton.THUMB_RIGHT, angle, tilt);
        angle = NormalizeInvertAngle(angle * Math.RAD2DEG);
            
        m_ControllerAngle = angle;
        m_ControllerTilt = tilt;
        m_ControllerTimout    = 0;            //reset controller timeout
        
        //Controller buttons
        //Select (A,cross)
        if (m_SelectInputWrapper.InputP().LocalPress())
        {
            GetGame().GameScript.CallFunction(m_RegisteredClass, "OnControllerPressSelect", NULL, m_SelectedObject);
        }
        
        //Back (B,circle)
        if (m_BackInputWrapper.InputP().LocalPress())
        {
            GetGame().GameScript.CallFunction(m_RegisteredClass, "OnControllerPressBack", NULL, m_SelectedObject);
        }
    }
    
    override bool OnMouseButtonUp(Widget w, int x, int y, int button)
    {
        if (button == MouseState.LEFT && m_SelectedObject/* && w == m_SelectedObject*/)
        {
            //Execute
            GetGame().GameScript.CallFunction(m_RegisteredClass, "OnMousePressLeft", NULL, m_SelectedObject);
            
            return true;
        }
        
        if (button == MouseState.RIGHT)
        {
            //Back one level
            GetGame().GameScript.CallFunction(m_RegisteredClass, "OnMousePressRight", NULL, NULL);
            
            return true;
        }
        
        return false;
    }
}