Ugui implement rocker (imitate Tai chi panda)

Core code:

usingUnityengine;usingSystem.Collections;usingUnityengine.ui; Public Delegate voidjoystickmovedelegate (joystickdata data); Public classJoystick:monobehaviour { PublicGameobject Joystickui;//joystick Overall UI for easy active     PublicRecttransform Joystickcenter;//Joystick center of gravity     PublicRecttransform Joystickbackground;//Joystick Background    Private floatHalfscreenwidth; Private floatHalfscreenheight; PrivateRecttransform Joystickrect; Private floatradius; PrivateVector3 lastmouseposition;  Public Static Eventjoystickmovedelegate joystickmoveevent; //Use this for initialization    voidStart () {halfscreenwidth= Screen.width/2; Halfscreenheight= Screen.height/2; Joystickrect= This.gameobject.getcomponent<recttransform>(); Radius= in; }        //Update is called once per frame    voidUpdate () {Joystickcontroller (); }     Public voidJoystickcontroller () {//the mouse keeps pressing        if(Input.getmousebutton (0))        {            floatDistance = Vector2.distance (NewVector2 (input.mouseposition.x, INPUT.MOUSEPOSITION.Y), joystickrect.anchoredposition); if(Distance <radius) {                //shift the center of gravity when the distance is less than the radiusJoystickcenter.anchoredposition =NewVector2 (input.mouseposition.x-joystickrect.anchoredposition.x, INPUT.MOUSEPOSITION.Y-JOYSTICKRECT.ANCHOREDPOSITION.Y); }            Else            {                //find a point on a circle: (Target point-origin) * radius/distance from origin to target pointVector2 endposition = (NewVector2 (input.mouseposition.x, INPUT.MOUSEPOSITION.Y)-joystickrect.anchoredposition) * Radius/distance; Joystickcenter.anchoredposition=endposition; }            if(Joystickmoveevent! =NULL) {joystickmoveevent (NewJoystickdata () {x = joystickcenter.anchoredposition.x-joystickbackground.anchoredposition.x, y = JOYSTICKCENTER.ANCHOREDPOSITION.Y-JOYSTICKBACKGROUND.ANCHOREDPOSITION.Y}); }        }        //mouse button down        if(Input.getmousebuttondown (0))        {             This. joystickui.setactive (true); //mouse click left screen            if(Input.mouseposition.x <halfscreenwidth) {joystickrect.anchoredposition=input.mouseposition; }            //mouse click on the right screen            if(Input.mouseposition.x >=halfscreenwidth) {                //Debug.Log ("Mouse Click to the Right");            }        }        //when the mouse is released        if(Input.getmousebuttonup (0))        {             This. joystickui.setactive (false); }    }} Public classjoystickdata{ Public floatx;  Public floaty;}

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Unity5.1 version:

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Ugui implement rocker (imitate Tai chi panda)