Card/Assets/Scripts/Card.cs

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

public class Card : MonoBehaviour
{
    private Vector3 offset;           // <20><><EFBFBD><EFBFBD><EFBFBD>뿨<EFBFBD><EBBFA8>֮<EFBFBD><D6AE><EFBFBD><EFBFBD>ƫ<EFBFBD><C6AB><EFBFBD><EFBFBD>
    private Camera mainCamera;        // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    private Vector3 originalPosition; // <20><><EFBFBD>Ƶij<C6B5>ʼλ<CABC><CEBB>
    private bool isRaised = false;    // <20><><EFBFBD>ǿ<EFBFBD><C7BF><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7>Ѿ<EFBFBD>̧<EFBFBD><CCA7>
    private float raiseHeight = 0.5f; // ̧<><CCA7><EFBFBD>߶<EFBFBD>
    private bool isDragging = false;  // <20><><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ק
    private Plane dragPlane;          // <20><>קƽ<D7A7><C6BD>

    void Start()
    {
        // <20><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
        mainCamera = Camera.main;
        if (mainCamera == null)
        {
            Debug.LogError("<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>δ<EFBFBD><CEB4><EFBFBD><EFBFBD>Ϊ MainCamera Tag<61><67><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>飡");
            return;
        }

        // <20><>¼<EFBFBD><C2BC><EFBFBD>Ƴ<EFBFBD>ʼλ<CABC><CEBB>
        originalPosition = transform.position;
    }

    void OnMouseDown()
    {
        if (mainCamera == null) return;

        // <20><><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> UI <20><>
        if (IsPointerOverUIObject())
        {
            Debug.Log("<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> UI <20>ϣ<EFBFBD><CFA3><EFBFBD><EFBFBD>Կ<EFBFBD><D4BF><EFBFBD><EFBFBD>϶<EFBFBD>");
            return;
        }

        // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>קƽ<D7A7>棺ƽ<E6A3BA>淨<EFBFBD><E6B7A8><EFBFBD><EFBFBD>Ϊ Vector3.up<75><70><EFBFBD><EFBFBD> Y <20><>ƽ<EFBFBD>У<EFBFBD><D0A3><EFBFBD><EFBFBD>߶<EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD>Ƶĵ<C6B5>ǰ Y ֵ
        dragPlane = new Plane(Vector3.up, transform.position);

        // ʹ<><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>߼<EFBFBD><DFBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>뿨<EFBFBD>Ƶ<EFBFBD>ƫ<EFBFBD><C6AB>
        Ray ray = mainCamera.ScreenPointToRay(Input.mousePosition);
        if (dragPlane.Raycast(ray, out float enter))
        {
            Vector3 hitPoint = ray.GetPoint(enter); // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
            offset = transform.position - hitPoint; // <20><><EFBFBD><EFBFBD>ƫ<EFBFBD><C6AB>
            Debug.Log("<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>뿨<EFBFBD>Ƶ<EFBFBD>ƫ<EFBFBD>ƣ<EFBFBD>" + offset);
        }
        else
        {
            Debug.LogError("<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>δ<EFBFBD><CEB4><EFBFBD><EFBFBD>קƽ<D7A7><C6BD><EFBFBD>ཻ");
            return;
        }

        // ̧<><CCA7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
        if (!isRaised)
        {
            isRaised = true;
            StopAllCoroutines(); // ֹͣ<CDA3><D6B9><EFBFBD><EFBFBD>Э<EFBFBD><D0AD>
            StartCoroutine(MoveToPosition(transform.position + new Vector3(0, raiseHeight, 0), 0.2f)); // ƽ<><C6BD>̧<EFBFBD><CCA7>
        }

        isDragging = true; // <20><>ʼ<EFBFBD><CABC>ק
    }

    void OnMouseDrag()
    {
        if (!isDragging || mainCamera == null) return;

        // ʹ<><CAB9><EFBFBD><EFBFBD>קƽ<D7A7><C6BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><CEBB>
        Ray ray = mainCamera.ScreenPointToRay(Input.mousePosition);
        if (dragPlane.Raycast(ray, out float enter))
        {
            Vector3 hitPoint = ray.GetPoint(enter); // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƽ<EFBFBD><C6BD><EFBFBD>Ľ<EFBFBD><C4BD><EFBFBD>
            transform.position = new Vector3(hitPoint.x + offset.x, originalPosition.y, hitPoint.z + offset.z); // <20>̶<EFBFBD> Y ֵ
            Debug.Log("<22><>ק<EFBFBD>п<EFBFBD><D0BF><EFBFBD>λ<EFBFBD>ã<EFBFBD>" + transform.position);
        }
        else
        {
            Debug.LogError("<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>δ<EFBFBD><CEB4><EFBFBD><EFBFBD>קƽ<D7A7><C6BD><EFBFBD>ཻ");
        }
    }

    void OnMouseUp()
    {
        if (!isDragging) return;

        isDragging = false;

        // <20><><EFBFBD>¿<EFBFBD><C2BF><EFBFBD>
        if (isRaised)
        {
            isRaised = false;
            StopAllCoroutines();
            StartCoroutine(MoveToPosition(new Vector3(transform.position.x, originalPosition.y, transform.position.z), 0.2f)); // ƽ<><C6BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
        }

        Debug.Log("<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ק<EFBFBD><D7A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD>ã<EFBFBD>" + transform.position);
    }

    // ƽ<><C6BD><EFBFBD>ƶ<EFBFBD>Э<EFBFBD><D0AD>
    private IEnumerator MoveToPosition(Vector3 targetPosition, float duration)
    {
        Vector3 startPosition = transform.position;
        float time = 0f;

        while (time < duration)
        {
            time += Time.deltaTime;
            transform.position = Vector3.Lerp(startPosition, targetPosition, time / duration);
            yield return null;
        }

        transform.position = targetPosition; // ȷ<><C8B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><CEBB>
    }

    // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> UI <20><>
    private bool IsPointerOverUIObject()
    {
        // <20><><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7><EFBFBD><EFBFBD><EFBFBD> EventSystem
        if (EventSystem.current == null)
        {
            Debug.LogWarning("<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȱ<EFBFBD><C8B1> EventSystem<65><6D><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB> EventSystem<65><6D>");
            return false;
        }

        // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> UI <20><>
        PointerEventData eventData = new PointerEventData(EventSystem.current)
        {
            position = Input.mousePosition
        };

        List<RaycastResult> results = new List<RaycastResult>();
        EventSystem.current.RaycastAll(eventData, results);
        return results.Count > 0;
    }
}