OldBlueWater/BlueWater/Assets/02.Scripts/AssaultMode/DraggableCard.cs

using System.Collections;
using BlueWaterProject;
using Sirenix.OdinInspector;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;

// ReSharper disable once CheckNamespace
namespace BlueWaterProject
{
    public class DraggableCard : MonoBehaviour, IPointerDownHandler, IDragHandler, IPointerUpHandler
    {
        [Title("Card")]
        private Vector3 originalPosition;
        private Vector3 originalScale;
        private CanvasGroup canvasGroup;
        private GameObject border;
        public Card card;

        [Title("Child Object")] 
        private Image typeImage;

        [InfoBox("카드가 작아지는 속도 입니다. 높을수록 천천히 작아집니다.")] [Range(0f, 1000f)]
        public float maxDistance = 500f;

        private Coroutine scaleDown;
    
        private void Awake()
        {
            border = transform.Find("Border").gameObject;
            typeImage = transform.Find("Type").GetComponent<Image>();
        }

        private void Start()
        {
            canvasGroup = GetComponent<CanvasGroup>();
        }

        public void CardInit()
        {
            // var cardInfo = DataManager.Inst.GetPirateUnitStatDictionaryFromKey(card.UnitIdx);
            // var captainStat = DataManager.Inst.GetPirateStatDictionaryFromKey(cardInfo.CaptainStatIdx);
            //typeImage.sprite = DataManager.Inst.cardType[(int)captainStat.UnitType];
        }

        public void OnPointerDown(PointerEventData eventData)
        {
            var transform1 = transform;
            originalPosition = transform1.position;
            originalScale = transform1.localScale;
            canvasGroup.alpha = 0.5f;
            //transform1.localScale = new Vector3(0.3f, 0.3f, 1f);
            if (scaleDown != null) StopCoroutine(scaleDown);
            scaleDown = StartCoroutine(ScaleDown());
        }

        public void OnDrag(PointerEventData eventData)
        {
            transform.position = Input.mousePosition;
            var ray = CameraManager.Inst.MainCam.ScreenPointToRay(Input.mousePosition);
            RaycastHit hit;
            if (Physics.Raycast(ray, out hit) && hit.collider.CompareTag("Ground"))
            {
                // 마우스가 Ground 위에 있을 때
                border.SetActive(true);
            }
            else
            {
                // 마우스가 Ground 위에 없을 때
                border.SetActive(false);
            }
        }

        public void OnPointerUp(PointerEventData eventData)
        {
            // 지형에 올바르게 드롭되지 않으면
            if (IsDroppedOnTarget()) return;
            if (scaleDown != null)
            {
                StopCoroutine(scaleDown);
                scaleDown = null;
            }

            var transform1 = transform;
            transform1.position = originalPosition;
            transform1.localScale = originalScale;
            canvasGroup.alpha = 1;
        }

        private bool IsDroppedOnTarget()
        {
            var ray = CameraManager.Inst.MainCam.ScreenPointToRay(Input.mousePosition);
            RaycastHit hit;

            if (!Physics.Raycast(ray, out hit)) return false;
            if (!hit.collider.CompareTag("Ground")) return false;
            Destroy(gameObject);
            var obj = Instantiate(DataManager.Inst.boat, GameManager.Inst.ShipPlayer.transform.position,
                Quaternion.identity);
                
            var boat = obj.GetComponent<Boat>();
            boat.TypeCardSprite.sprite = typeImage.sprite;
            boat.Target = hit.point;
            boat.CardIndex = card.Idx;
            //boat.OnLanded += UnitManager.Inst.PirateUnitCreateAndAssign;
            
            return true;

        }

        private IEnumerator ScaleDown()
        {
            var originalScale = transform.localScale;
            var targetScale = new Vector3(0.3f, 0.3f, 1f);

            while (true)
            {
                // 현재 위치와 원래 위치 사이의 거리를 계산
                var distance = Vector3.Distance(originalPosition, transform.position);

                // 비율을 계산 (0 = 같은 위치, 1 = maxDistance만큼나 이상 떨어져 있음)
                var ratio = Mathf.Min(distance / maxDistance, 1f);

                // SmoothStep 사용하면, 천천히 시작해서 점차 빠르게 변화
                // float의 경우만 사용할 수 있으므로, Vector3의 모든 요소에 일일이 적용
                var newScale = new Vector3(
                    Mathf.SmoothStep(originalScale.x, targetScale.x, ratio),
                    Mathf.SmoothStep(originalScale.y, targetScale.y, ratio),
                    Mathf.SmoothStep(originalScale.z, targetScale.z, ratio)
                );

                // 조정한 스케일을 적용
                transform.localScale = newScale;

                yield return null;
            }
        }
    }
}