SCR_MapSelectionModule.c

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//------------------------------------------------------------------------------------------------
[BaseContainerProps()]
class SCR_MapSelectionModule: SCR_MapModuleBase
{
    [Attribute("{9784E36B47AA068A}UI/Textures/Editor/Cursors/GamepadCursor_MultiSelection.edds", UIWidgets.ResourcePickerThumbnail, desc: "Multiselection texture", params: "edds")]
    ResourceName m_sMultiselectTexture;
        
    [Attribute(defvalue: "100", uiwidget: UIWidgets.EditBox, desc: "Adjust speed of multiselection expansion. Multiplier of frame timeSlice", params: "1 1000")]
    float m_fMultiselectSpeed;
    
    const float MAX_HOLD_TIME = 4;          // seconds, after this point circle multi selection no longer expands
    const float MULTISEL_INIT_SIZE = 0.25;  // multiplier of initial selection texture size -> multiplies screen size, so val 0.2 will result in texture being 1/5th of screens y size 
    
    // arrays
    protected ref array<ref CanvasWidgetCommand> m_Commands = new array<ref CanvasWidgetCommand>;   // Stores all commands that will be drawn on that canvas

    protected float m_fHoldTimeSlice = 0;   // Multiselection hold time slice
    protected float m_fSelCircleSize = 0;   // Multiselection circle size
    protected ref ImageDrawCommand m_SelectionCircle;
    protected ref SharedItemRef m_SelCircleSharedItem;  
 
    // cached objects
    protected CanvasWidget m_DrawCanvas;    
    protected SCR_MapCursorModule m_CursorModule;
    protected SCR_MapCursorInfo m_CursorInfo;
    
    //------------------------------------------------------------------------------------------------
    // Get multiselection circle size
    float GetSelCircleSize() 
    { 
        return m_fSelCircleSize;
    }
    
    //------------------------------------------------------------------------------------------------
    protected void RenderSelectionCircle(float timeSlice)
    {               
        if ( (m_CursorModule.GetCursorState() & EMapCursorState.CS_MULTI_SELECTION) && m_CursorModule.m_eMultiSelType == EMapCursorSelectType.CIRCLE)
        {
        
            if (!m_SelCircleSharedItem)
            {
                m_SelCircleSharedItem = m_DrawCanvas.LoadTexture(m_sMultiselectTexture);
                if (!m_SelCircleSharedItem.IsValid())
                    return;
            }
                
            if (m_fHoldTimeSlice < MAX_HOLD_TIME) // max size after set time
                m_fHoldTimeSlice += timeSlice;
            
            m_SelectionCircle = new ImageDrawCommand();
            if (m_SelectionCircle)
            {
                //m_SelectionCircle.m_iColor = 0xffE2A750;
                m_SelectionCircle.m_pTexture = m_SelCircleSharedItem;
 
                AdjustCircleSize();
                m_SelectionCircle.m_Size = Vector(m_fSelCircleSize, m_fSelCircleSize, 0);
                
                m_SelectionCircle.m_Position = Vector(m_CursorInfo.Scale(m_CursorInfo.x) - m_SelectionCircle.m_Size[0]/2, m_CursorInfo.Scale(m_CursorInfo.y) - m_SelectionCircle.m_Size[1]/2, 0);
                m_SelectionCircle.m_iFlags = (WidgetFlags.STRETCH |  WidgetFlags.BLEND);
            
                if (m_Commands.Find(m_SelectionCircle) == -1)
                        m_Commands.Insert(m_SelectionCircle);
            }           
        }
        else 
        {
            m_fHoldTimeSlice = 0;
            m_fSelCircleSize = 0;
        }
    }
    
    //------------------------------------------------------------------------------------------------
    protected void AdjustCircleSize()
    {
        float sizeX, sizeY;
        m_DrawCanvas.GetScreenSize(sizeX, sizeY);
        
        if (m_fHoldTimeSlice < 0.2)
        {
            m_fSelCircleSize = Math.Lerp(0, sizeY * MULTISEL_INIT_SIZE, m_fHoldTimeSlice * 5);
        }
        else 
        {
            m_fSelCircleSize = (sizeY * MULTISEL_INIT_SIZE) + (m_fHoldTimeSlice * m_fMultiselectSpeed);
        }
    }
    
    //------------------------------------------------------------------------------------------------
    protected void RenderSelectionRectangle()
    {
        if ( (m_CursorModule.GetCursorState() & EMapCursorState.CS_MULTI_SELECTION) && m_CursorModule.m_eMultiSelType == EMapCursorSelectType.RECTANGLE)
        {
            m_MapEntity.SetSelection( Vector(m_CursorInfo.Scale(m_CursorInfo.startPosMultiSel[0]),0,m_CursorInfo.Scale(m_CursorInfo.startPosMultiSel[1])), Vector(m_CursorInfo.Scale(m_CursorInfo.x),0,m_CursorInfo.Scale(m_CursorInfo.y)));
        }
        else
        {
            m_MapEntity.ResetSelection();
        }
    }
    
    //------------------------------------------------------------------------------------------------
    override void OnMapOpen(MapConfiguration config)
    {
        m_CursorModule = SCR_MapCursorModule.Cast(m_MapEntity.GetMapModule(SCR_MapCursorModule));
        m_DrawCanvas = CanvasWidget.Cast(config.RootWidgetRef.FindAnyWidget(SCR_MapConstants.DRAWING_WIDGET_NAME));
        m_CursorInfo = m_CursorModule.GetCursorInfo();
        
        m_DrawCanvas.SetZoom(m_MapEntity.GetCurrentZoom() / m_MapEntity.GetMapWidget().PixelPerUnit());
        m_DrawCanvas.SetOffsetPx(m_MapEntity.GetCurrentPan() * -1);
        
        m_MapEntity.ResetSelection();       
    }
        
    //------------------------------------------------------------------------------------------------
    override void Update(float timeSlice)
    {
        // cleanup
        m_SelectionCircle = null;
        m_Commands.Clear();
 
        // only when cursor module is active
        if (m_CursorModule)
        {
            RenderSelectionCircle(timeSlice);
            RenderSelectionRectangle();
        }
        
        if(m_Commands.Count() > 0)
        {
            m_DrawCanvas.SetDrawCommands(m_Commands);
        }
    }
};