Code up the card part

Assets/Scripts/UI/CardSystem/DragDrop/CardDraggableVisual.cs

@@ -0,0 +1,121 @@
+using AppleHills.Data.CardSystem;
+using UI.DragAndDrop.Core;
+using UnityEngine;
+
+namespace UI.CardSystem.DragDrop
+{
+    /// <summary>
+    /// Visual representation for CardDraggable.
+    /// Uses the existing CardDisplay component to render the card.
+    /// </summary>
+    public class CardDraggableVisual : DraggableVisual
+    {
+        [Header("Card Visual Components")]
+        [SerializeField] private CardDisplay cardDisplay;
+        [SerializeField] private Transform shadowTransform;
+        [SerializeField] private float shadowOffset = 20f;
+        
+        private Vector3 _shadowInitialPosition;
+        private CardDraggable _cardDraggable;
+        
+        public CardDisplay CardDisplay => cardDisplay;
+        
+        public override void Initialize(DraggableObject parent)
+        {
+            base.Initialize(parent);
+            
+            _cardDraggable = parent as CardDraggable;
+            
+            // Get CardDisplay component if not assigned
+            if (cardDisplay == null)
+            {
+                cardDisplay = GetComponentInChildren<CardDisplay>();
+            }
+            
+            // Initialize shadow
+            if (shadowTransform != null)
+            {
+                _shadowInitialPosition = shadowTransform.localPosition;
+            }
+            
+            // Subscribe to card data changes
+            if (_cardDraggable != null)
+            {
+                _cardDraggable.OnCardDataChanged += HandleCardDataChanged;
+                
+                // Initial card setup
+                if (_cardDraggable.CardData != null && cardDisplay != null)
+                {
+                    cardDisplay.SetupCard(_cardDraggable.CardData);
+                }
+            }
+        }
+        
+        protected override void UpdateVisualContent()
+        {
+            // CardDisplay handles its own rendering, no need to update every frame
+            // This is called every frame but we only update when card data changes
+        }
+        
+        /// <summary>
+        /// Refresh the card display with current data
+        /// </summary>
+        public void RefreshCardDisplay()
+        {
+            if (cardDisplay != null && _cardDraggable != null && _cardDraggable.CardData != null)
+            {
+                cardDisplay.SetupCard(_cardDraggable.CardData);
+            }
+        }
+        
+        private void HandleCardDataChanged(CardDraggable draggable, CardData data)
+        {
+            RefreshCardDisplay();
+        }
+        
+        protected override void OnPointerDownVisual()
+        {
+            base.OnPointerDownVisual();
+            
+            // Move shadow down when pressed
+            if (shadowTransform != null)
+            {
+                shadowTransform.localPosition = _shadowInitialPosition + (-Vector3.up * shadowOffset);
+            }
+        }
+        
+        protected override void OnPointerUpVisual(bool longPress)
+        {
+            base.OnPointerUpVisual(longPress);
+            
+            // Restore shadow position
+            if (shadowTransform != null)
+            {
+                shadowTransform.localPosition = _shadowInitialPosition;
+            }
+        }
+        
+        protected override void OnDragStartedVisual()
+        {
+            base.OnDragStartedVisual();
+            // Card-specific visual effects when dragging starts
+        }
+        
+        protected override void OnDragEndedVisual()
+        {
+            base.OnDragEndedVisual();
+            // Card-specific visual effects when dragging ends
+        }
+        
+        protected override void OnDestroy()
+        {
+            base.OnDestroy();
+            
+            if (_cardDraggable != null)
+            {
+                _cardDraggable.OnCardDataChanged -= HandleCardDataChanged;
+            }
+        }
+    }
+}
+