TaiWan/Assets/Roaming/Scripts/Controller/Camera/JoyStickHandler.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;

public class JoyStickHandler : MonoBehaviour, IPointerDownHandler, IDragHandler, IPointerUpHandler
{
    /// <summary>
    /// ҡ<><D2A1>ˮƽƫ<C6BD><C6AB><EFBFBD><EFBFBD>
    /// </summary>
    public static float js_x;
    /// <summary>
    /// ҡ<>˴<EFBFBD>ֱƫ<D6B1><C6AB><EFBFBD><EFBFBD>
    /// </summary>
    public static float js_y;

    // <20><>ǰģʽ    
    public static Mode CurrentMode;

    /// <summary>
    /// ҡ<><D2A1>ģʽ
    /// </summary>
    public enum Mode { None, Up, Down, Left, Right };

    /// <summary>
    /// <20><><EFBFBD><EFBFBD>ͼƬRectTransform
    /// </summary>
    [Tooltip("<22><><EFBFBD><EFBFBD>ͼƬRectTransform")]
    public RectTransform background;
    /// <summary>
    /// Handle<6C><65>RectTransform
    /// </summary>
    [Tooltip("Handle<6C><65>RectTransform")]
    public RectTransform handle;
    /// <summary>
    /// ҡ<><D2A1><EFBFBD>ٶ<EFBFBD>ƫ<EFBFBD><C6AB><EFBFBD><EFBFBD>
    /// </summary>
    [Tooltip("ҡ<><D2A1><EFBFBD>ٶ<EFBFBD>ƫ<EFBFBD><C6AB><EFBFBD><EFBFBD>")]
    public float js_Speed = 1f;
    /// <summary>
    /// <20><><EFBFBD><EFBFBD>
    /// </summary>
    [Tooltip("ҡ<><D2A1><EFBFBD><EFBFBD><EFBFBD>ڵĻ<DAB5><C4BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>")]
    private Canvas canvas;

    // <20>뾶
    float radius;
    // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҵ<EFBFBD><D2B5><EFBFBD><EFBFBD><EFBFBD>
    Vector2 up, down, left, right;

    public bool TestOnEditor;

    Color handleColor;

    void Start()
    {
        if (!TestOnEditor && !H5Controller.IsMobileBroswer())
        {
            Destroy(gameObject);
        }
        canvas = transform.parent.parent.GetComponent<Canvas>();

        CurrentMode = Mode.None;
        radius = background.rect.width / 2.0f;
        up = new Vector2(0, radius);
        down = new Vector2(0, -radius);
        left = new Vector2(-radius, 0);
        right = new Vector2(radius, 0);

        handleColor = handle.GetComponent<Image>().color;
    }

    #region
    //void Update()
    //{
    //    // MessageSend();
    //}
    void MessageSend()
    {
        switch (CurrentMode)
        {
            case Mode.None:
                break;
            case Mode.Up:
                break;
            case Mode.Left:
                break;
            case Mode.Down:
                break;
            case Mode.Right:
                break;
        }
    }
    #endregion

    // <20><><EFBFBD>갴<EFBFBD><EAB0B4>
    public void OnPointerDown(PointerEventData eventData)
    {
        if (BaseController.CanControl)
        {
            OnDrag(eventData);

            handle.GetComponent<Image>().color = new Color(150, 150, 150, 255);
        }
    }

    // <20><><EFBFBD><EFBFBD><EFBFBD>ſ<EFBFBD>
    public void OnPointerUp(PointerEventData eventData)
    {
        if (BaseController.CanControl)
        {
            js_x = 0;
            js_y = 0;

            handle.anchoredPosition = Vector2.zero;
            handle.GetComponent<Image>().color = handleColor;
            CurrentMode = Mode.None;
        }
    }

    // <20><>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD>
    Vector2 to;
    public void OnDrag(PointerEventData eventData)
    {
        if (BaseController.CanControl)
        {
            to = (eventData.position - (Vector2)background.position) / canvas.scaleFactor;
            if (to.magnitude <= radius)
            {
                handle.anchoredPosition = to;
            }
            else
            {
                to = to / (to.magnitude / radius);
                handle.anchoredPosition = to;
            }

            CalcDis();
        }
    }
    void CalcDis()
    {
        float dis = 0f;
        if (Vector2.Distance(up, handle.anchoredPosition) < dis || dis == 0)
        {
            dis = Vector2.Distance(up, handle.anchoredPosition);
            CurrentMode = Mode.Up;
        }
        if (Vector2.Distance(down, handle.anchoredPosition) < dis)
        {
            dis = Vector2.Distance(down, handle.anchoredPosition);
            CurrentMode = Mode.Down;
        }
        if (Vector2.Distance(left, handle.anchoredPosition) < dis)
        {
            dis = Vector2.Distance(left, handle.anchoredPosition);
            CurrentMode = Mode.Left;
        }
        if (Vector2.Distance(right, handle.anchoredPosition) < dis)
        {
            dis = Vector2.Distance(right, handle.anchoredPosition);
            CurrentMode = Mode.Right;
        }

        js_x = (radius - Vector2.Distance(right, handle.anchoredPosition)) / radius * js_Speed;
        js_y = (radius - Vector2.Distance(up, handle.anchoredPosition)) / radius * js_Speed;
    }
}