110 lines
3.6 KiB
C#
110 lines
3.6 KiB
C#
using TMPro;
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using UnityEngine;
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using UnityEngine.EventSystems;
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using UnityEngine.UI;
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// Drag Dropable
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public class ItemHandler : MonoBehaviour, IPointerDownHandler, IBeginDragHandler, IEndDragHandler,
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IDragHandler
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{
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[SerializeField] private Canvas canvas;
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private CanvasGroup _canvasGroup;
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private Canvas _dragLayerCanvas;
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private Transform _originalParent;
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private Vector2 _originalPosition;
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private RectTransform _rectTransform;
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private void Awake()
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{
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_rectTransform = GetComponent<RectTransform>();
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_canvasGroup = GetComponent<CanvasGroup>();
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if (_canvasGroup == null) _canvasGroup = gameObject.AddComponent<CanvasGroup>();
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if (canvas == null) canvas = GameObject.Find("UICanvas").GetComponent<Canvas>();
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// _dragLayerCanvas = GameObject.Find("DragLayerCanvas").GetComponent<Canvas>();
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}
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public void OnBeginDrag(PointerEventData eventData)
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{
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// starting slot type and slot index
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var parentSlotComponent = eventData.pointerDrag.GetComponentInParent<SlotComponent>();
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Debug.Log("Parent Slot Type: " + parentSlotComponent.GetSlotType());
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Debug.Log("Begin Drag");
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_originalPosition = _rectTransform.anchoredPosition;
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_canvasGroup.alpha = 0.6f;
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_canvasGroup.blocksRaycasts = false;
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_canvasGroup.interactable = false; // Disable interaction while dragging
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}
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public void OnDrag(PointerEventData eventData)
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{
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// Ensure the canvas is set
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if (canvas == null)
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{
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Debug.LogWarning("Canvas is null");
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return;
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}
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// Convert the mouse position to world position
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var gameCamera = GameObject.Find("Main Camera").GetComponent<Camera>();
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var worldPosition = gameCamera.ScreenToWorldPoint(eventData.position);
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worldPosition.z = 0f; // Set z-coordinate to 0 to ensure the item stays on the UI plane
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// Update the item's position to follow the mouse
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_rectTransform.position = worldPosition;
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}
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public void OnEndDrag(PointerEventData eventData)
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{
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Debug.Log("End Drag");
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var parentSlotComponent = eventData.pointerDrag.GetComponentInParent<SlotComponent>();
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// Check if dropped on a valid slot
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var hitObjects = eventData.hovered;
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var droppedOnValidSlot = false;
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foreach (var obj in hitObjects)
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if (obj.GetComponent<SlotComponent>() != null && obj.GetComponent<SlotComponent>() != parentSlotComponent)
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{
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droppedOnValidSlot = true;
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break;
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}
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// if its the same slot then retur to last position
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if (!droppedOnValidSlot)
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// Snap back to original position if not dropped in a valid slot
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_rectTransform.anchoredPosition = _originalPosition;
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_canvasGroup.alpha = 1.0f;
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_canvasGroup.blocksRaycasts = true;
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_canvasGroup.interactable = true; // Enable interaction after dragging
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}
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public void OnPointerDown(PointerEventData eventData)
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{
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Debug.Log("OnPointerDown");
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}
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public void DisplayItem(GameItem item)
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{
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if (item == null)
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{
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Debug.Log("Item is null!");
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Destroy(transform.gameObject);
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return;
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}
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// Debug.Log(transform.GetChild(1));
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transform.Find("ItemName").GetComponent<TMP_Text>().text = item.itemName;
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transform.Find("qty").GetComponent<Text>().text = item.quantity;
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transform.Find("Icon").GetComponent<Image>().sprite = item.icon;
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Debug.Log("completed processing set item");
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}
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} |