[Unity makes wheels] 3 ways to realize the virtual mobile joystick to control the movement of characters (practical operation plus detailed explanation, the most complete and easy to understand on the whole network)

The first

Poke the code yourself, I would like to call it the simplest implementation

using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;

public class Joystick1 : ScrollRect
{
   
    
    
    public