Unity of study notes (rocker production)

Recently saw a very novel rocker is pressed, it will appear in the press position, and dragged take the time, to a certain distance throughout rocker will follow them, then test yourself to do a bit of this shake pole

First, let's talk about my rocker preset structure

Where to hang the code does not matter, the key is to know what I wrote publice out GameObject which corresponds with the code lookup can be dragged or

By the time the code will appear in these

public GameObject rockerOnOff;  
public GameObject rockerStick;
public GameObject rockerFather;
public GameObject rockerControlGo;

RockerPosition is actually a picture, this picture is I set transparency becomes 0, so can not see, I am in order to activate the time range control rocker in this picture inside

Rocker The rocker is in fact, usually it inactivated state, but just click on the picture in the RockerPosition range, it will be activated, so rockerOnOff is the scene Rocker

rockerStick the rocker lever is moved, added to the public out of rockerStick

rockerFather out the public, is added scene RockerPosition, because behind the mobile object positioning requires

Well, the next step is the code

UnityEngine the using; 
the using UnityEngine.EventSystems; 

public class BarGroundMove: MonoBehaviour, IPointerDownHandler, IPointerUpHandler, 
    IDragHandler 
{ 

    public rockerOnOff the GameObject;          // control rocker switch    
    public rockerStick the GameObject;          // rocker lever 
    public rockerFather the GameObject;         // rocker parent 
    the GameObject rockerControlGo public;      // objects joystick control is desired 

    a float RADIUS = 50 ; // distance rocker bar and rocker basemap 

    the Vector2 dirV2;                          
    Vector3 dirV3;

    void OnPointerDown public (PointerEventData eventData)   // click event function IPointerDownHandler interface generation 
    { 
        rockerOnOff.SetActive ( to true ); // click when the rocker will activate 
        Vector2 localPos;


         // this Api: public static bool ScreenPointToLocalPointInRectangle (RectTransform rect, Vector2 screenPoint, camera CAM, OUT Vector2 localPoint);
         // rockerFather.transform AS RectTransform, local coordinate rockerFather parent class
         // coordinate points eventData.position this event triggered
         // eventData.pressEventCamera this event is triggered when the camera
         // OUT localPos this parameter is the relative coordinate RectTransform rect of Vector2

        RectTransformUtility.ScreenPointToLocalPointInRectangle ( 
            rockerFather.transform AS RectTransform, 
            eventData.position, 
            eventData.pressEventCamera, 
            OUT localPos 
        ); 

        rockerOnOff.transform.localPosition = localPos; // activation rocker position is a position relative rockerFather 
    } 


    public void ondrag (PointerEventData eventDataA )   // drag event IDragHandler interface generation function 
    { 
        the Vector2 localPos;                                                // relative to the drag position of the rocker 
        RectTransformUtility.ScreenPointToLocalPointInRectangle ( 
            rockerOnOff.transform AS RectTransform,
            eventData.position, 
            eventData.pressEventCamera, 
            OUT localPos 
            ); 

        the Vector2 groundPos;                                              // relative to the drag position of the rocker parent class 
        RectTransformUtility.ScreenPointToLocalPointInRectangle ( 
        rockerFather.transform AS RectTransform, 
        eventData.position, 
        eventData.pressEventCamera, 
        OUT groundPos 
        );

         / / opposite rocker bar vector obtained, write the whole word is rockerOnOff.transform.localPositio - Vecter2.zero (the rod, the rocker corresponding to the parent class is local coordinates ( 0 , 0 )) 
        the Vector2 GRV2 = rockerOnOff.transform.localPosition;
        
        dirV2 
    {= LocalPos.normalized; // this is a recording unit vector obtained drag, mobile computing the following calculation to facilitate 

        IF (localPos.magnitude> RADIUS) // when the length is greater than the radius of the rod will follow the entire movement of the rocker 
        { 
            rockerOnOff. transform.localPosition = (GRV2 - groundPos) * RADIUS + .normalized groundPos; 
            rockerStick.transform.localPosition = localPos.normalized * RADIUS; 
        } 
        the else 
        { 
            rockerStick.transform.localPosition = localPos; 
        } 


    } 

 

    public void OnPointerUp (PointerEventData eventDataA)   // release the function IPointerUpHandler interface generation event
        rockerStick.transform.localPosition = Vector3.zero; 
        dirV2 = Vector2.Zero; // this is a raising time, the unit vector is set to 0, so that the following object can not be moved according to the vector 
        rockerOnOff.SetActive ( to false ); 
    } 
    the Start void () 
    { 

    } 

    void the Update () 
    { 
        dirV3.x = dirV2.x; 
        dirV3.z = dirV2.y; 
        dirV3.y = 0 ; 

        rockerControlGo.transform.Translate (new new Vector3 ( 0 , 0 , * dirV3.magnitude * Time.deltaTime 2 .5f)); 

        IF (dirV3 =! Vector3.zero)
        {
            rockerControlGo.transform.rotation = Quaternion.Lerp(rockerControlGo.transform.rotation, Quaternion.LookRotation(dirV3),0.05f);
        }
        
    }

}