_xiaofang/xiaofang/Assets/Script/hylScripts/JoystickController.cs

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

public class JoystickController : MonoBehaviour, IDragHandler, IEndDragHandler
{
    public bool isDrag = false;
    public RectTransform joystickBackground; // ҡ<>˱<EFBFBD><CBB1><EFBFBD>
    public RectTransform joystick;           // ҡ<><D2A1>
    public Camera playerCamera;              // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    public float rotationSpeed = 0.5f;         // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ת<EFBFBD>ٶ<EFBFBD>

    // <20><>ת<EFBFBD>Ƕ<EFBFBD><C7B6><EFBFBD><EFBFBD><EFBFBD>
    public float horizontalMinRotation = -75f;  // ˮƽ<CBAE><C6BD>ת<EFBFBD><D7AA>Сֵ
    public float horizontalMaxRotation = 75f;   // ˮƽ<CBAE><C6BD>ת<EFBFBD><D7AA><EFBFBD><EFBFBD>ֵ
    public float verticalMinRotation = -75f;     // <20><>ֱ<EFBFBD><D6B1>ת<EFBFBD><D7AA>Сֵ
    public float verticalMaxRotation = 75f;      // <20><>ֱ<EFBFBD><D6B1>ת<EFBFBD><D7AA><EFBFBD><EFBFBD>ֵ

    private Vector2 joystickInput = Vector2.zero;

    private float currentXRotation = 0f;     // <20><>ǰ<EFBFBD><C7B0>ˮƽ<CBAE><C6BD>ת<EFBFBD>Ƕ<EFBFBD>
    private float currentYRotation = 0f;     // <20><>ǰ<EFBFBD>Ĵ<EFBFBD>ֱ<EFBFBD><D6B1>ת<EFBFBD>Ƕ<EFBFBD>

    private float targetXRotation = 0f;      // Ŀ<><C4BF>ˮƽ<CBAE><C6BD>ת<EFBFBD>Ƕ<EFBFBD>
    private float targetYRotation = 0f;      // Ŀ<>괹ֱ<EAB4B9><D6B1>ת<EFBFBD>Ƕ<EFBFBD>

    void Start()
    {
        // <20><>ʼ<EFBFBD><CABC>ҡ<EFBFBD>˵<EFBFBD>λ<EFBFBD><CEBB>
        joystick.anchoredPosition = Vector2.zero;

        // <20><>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ת<EFBFBD>Ƕ<EFBFBD>
        targetXRotation = playerCamera.transform.eulerAngles.y;
        targetYRotation = playerCamera.transform.eulerAngles.x;
    }

    // ÿ֡<C3BF><D6A1><EFBFBD><EFBFBD>ҡ<EFBFBD>˵<EFBFBD><CBB5><EFBFBD><EFBFBD><EFBFBD>
    void Update()
    {
        if (joystickInput.magnitude > 0)
        {
            // <20><><EFBFBD><EFBFBD>ҡ<EFBFBD>˵<EFBFBD><CBB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ת
            targetXRotation += joystickInput.x * rotationSpeed * Time.deltaTime;
            targetYRotation -= joystickInput.y * rotationSpeed * Time.deltaTime;

            // <20><><EFBFBD><EFBFBD>ˮƽ<CBAE><C6BD>ת<EFBFBD><D7AA>Χ<EFBFBD><CEA7><EFBFBD><EFBFBD>ֹ<EFBFBD><D6B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ת<EFBFBD><D7AA>ͷ
            targetXRotation = Mathf.Clamp(targetXRotation, horizontalMinRotation, horizontalMaxRotation);

            // <20><><EFBFBD>ƴ<EFBFBD>ֱ<EFBFBD><D6B1>ת<EFBFBD><D7AA>Χ<EFBFBD><CEA7><EFBFBD><EFBFBD>ֹ<EFBFBD><D6B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ת
            targetYRotation = Mathf.Clamp(targetYRotation, verticalMinRotation, verticalMaxRotation);

            // ʹ<><CAB9> Quaternion <20><>ƽ<EFBFBD><C6BD><EFBFBD><EFBFBD><EFBFBD>ɵ<EFBFBD>Ŀ<EFBFBD><C4BF><EFBFBD><EFBFBD>ת<EFBFBD>Ƕ<EFBFBD>
            playerCamera.transform.localRotation = Quaternion.Euler(targetYRotation, targetXRotation, 0f);
        }
    }

    // ҡ<><D2A1><EFBFBD>϶<EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD>ҡ<EFBFBD><D2A1>λ<EFBFBD>ú<EFBFBD><C3BA><EFBFBD><EFBFBD><EFBFBD>
    public void OnDrag(PointerEventData eventData)
    {
        Vector2 localPoint;

        // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD>ô<EFBFBD><C3B4><EFBFBD>Ļ<EFBFBD><C4BB><EFBFBD><EFBFBD>ת<EFBFBD><D7AA>ΪUI<55><49><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
        RectTransformUtility.ScreenPointToLocalPointInRectangle(joystickBackground, eventData.position, eventData.pressEventCamera, out localPoint);

        // <20><><EFBFBD><EFBFBD>ҡ<EFBFBD>˵<EFBFBD><CBB5><EFBFBD><EFBFBD>뷽<EFBFBD><EBB7BD>
        joystickInput = localPoint.normalized;

        // <20><><EFBFBD><EFBFBD>ҡ<EFBFBD>˵<EFBFBD><CBB5>ƶ<EFBFBD><C6B6><EFBFBD>Χ<EFBFBD><CEA7>ȷ<EFBFBD><C8B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ᳬ<EFBFBD><E1B3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ı߽<C4B1>
        if (localPoint.magnitude > joystickBackground.sizeDelta.x / 2)
        {
            joystickInput = localPoint.normalized * (joystickBackground.sizeDelta.x / 2);
        }

        // <20><><EFBFBD><EFBFBD>ҡ<EFBFBD>˵<EFBFBD>λ<EFBFBD><CEBB>
        joystick.anchoredPosition = joystickInput;
    }

    // ҡ<><D2A1><EFBFBD>ɿ<EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD>ҡ<EFBFBD><D2A1>λ<EFBFBD><CEBB>
    public void OnEndDrag(PointerEventData eventData)
    {
        isDrag = false;

        // ҡ<><D2A1><EFBFBD>ɿ<EFBFBD><C9BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><CEBB>
        joystick.anchoredPosition = Vector2.zero;
        joystickInput = Vector2.zero;
    }
}