드래그 드롭 기능 추가

Assets/Scripts/UI/UIButtonToggle.cs

@@ -0,0 +1,24 @@
+using UnityEngine;
+using UnityEngine.Events;
+using UnityEngine.UI;
+
+public class UIButtonToggle : MonoBehaviour
+{
+    public bool isPressed = false;
+    public UnityEvent onPressed;
+    public UnityEvent onReleased;
+    void Awake()
+    {
+        Button button = GetComponent<Button>();
+        if (button != null)
+        {
+            button.onClick.AddListener(
+                () =>
+                {
+                    isPressed = !isPressed;
+                    if (isPressed) onPressed?.Invoke();
+                    else onReleased?.Invoke();
+                });
+        }
+    }
+}

Assets/Scripts/UI/UIButtonToggle.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: e97dd21b324d80a468a071d9171b5f77

Assets/Scripts/UI/UIDragSpawner.cs

@@ -4,17 +4,15 @@ using UnityEngine.EventSystems;
 
 public class UIDragSpawner : MonoBehaviour, IBeginDragHandler, IDragHandler, IEndDragHandler
 {
-    public GameObject prefabToSpawn;  
-    public Canvas canvas;            
-    private RectTransform rectTransform;
-    private CanvasGroup canvasGroup;
+    public RectTransform rectTransform;
+    public GameObject prefabToSpawn;   
+    public LayerMask mask;
     private GameObject dragPreview;
+    private CanvasGroup canvasGroup;
 
     void Awake()
     {
-        rectTransform = GetComponent<RectTransform>();
-        //canvasGroup = gameObject.AddComponent<CanvasGroup>();
-        canvasGroup = gameObject.GetOrAddComponent<CanvasGroup>(); 
+        canvasGroup = gameObject.GetOrAddComponent<CanvasGroup>();
     }
 
     public void OnBeginDrag(PointerEventData eventData)
@@ -23,16 +21,19 @@ public class UIDragSpawner : MonoBehaviour, IBeginDragHandler, IDragHandler, IEn
             canvasGroup = gameObject.AddComponent<CanvasGroup>();
         canvasGroup.alpha = 0.6f;
         canvasGroup.blocksRaycasts = false;
-         
-        dragPreview = Instantiate(gameObject, canvas.transform);
-        dragPreview.GetComponent<CanvasGroup>().blocksRaycasts = false;
+
+        dragPreview = Instantiate(prefabToSpawn); 
     }
 
     public void OnDrag(PointerEventData eventData)
     {
         if (dragPreview)
         {
-            dragPreview.GetComponent<RectTransform>().position = eventData.position;
+            Ray ray = Camera.main.ScreenPointToRay(eventData.position);
+            if (Physics.Raycast(ray, out RaycastHit hit, 100.0f, mask))
+            {
+                dragPreview.transform.position = hit.point; 
+            } 
         }
     }
 
@@ -41,13 +42,14 @@ public class UIDragSpawner : MonoBehaviour, IBeginDragHandler, IDragHandler, IEn
         canvasGroup.alpha = 1f;
         canvasGroup.blocksRaycasts = true;
 
-        if (dragPreview)
+        if (IsPointerOverScrollRect(rectTransform))
+        {
             Destroy(dragPreview);
-         
-        Ray ray = Camera.main.ScreenPointToRay(eventData.position);
-        if (Physics.Raycast(ray, out RaycastHit hit))
-        { 
-            Instantiate(prefabToSpawn, hit.point, Quaternion.identity);
-        }
+            dragPreview = null;
+        }  
+    } 
+    public bool IsPointerOverScrollRect(RectTransform rt)
+    {
+        return RectTransformUtility.RectangleContainsScreenPoint(rt, Input.mousePosition);
     }
 }