97 lines
2.8 KiB
C#
97 lines
2.8 KiB
C#
using UnityEngine;
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using UnityEngine.EventSystems;
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using UnityEngine.UI;
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/// <summary>
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/// 底部英雄卡片的拖拽：拖到网格格位上放置英雄。
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/// 吸附与放置由 FormationManager 负责，卡片只负责拖动表现和回调。
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/// </summary>
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[RequireComponent(typeof(CanvasGroup))]
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public class FormationCardDrag : MonoBehaviour, IBeginDragHandler, IDragHandler, IEndDragHandler
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{
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[Header("界面引用")]
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public Image background;
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public Image icon;
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public Text nameText;
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[HideInInspector] public FormationManager manager;
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[HideInInspector] public int heroIndex;
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private RectTransform rectTransform;
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private CanvasGroup canvasGroup;
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private Vector2 homePosition;
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private static readonly Color NormalColor = new Color(0.15f, 0.15f, 0.2f, 0.92f);
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private static readonly Color PlacedColor = new Color(0.18f, 0.18f, 0.22f, 0.45f);
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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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homePosition = rectTransform.anchoredPosition;
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}
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/// <summary>填入名字与头像。</summary>
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public void SetContent(string displayName, Sprite iconSprite)
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{
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if (nameText != null) nameText.text = displayName;
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if (icon != null)
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{
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if (iconSprite != null)
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{
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icon.sprite = iconSprite;
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icon.preserveAspect = true;
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icon.color = Color.white;
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}
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else
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{
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icon.color = new Color(0.4f, 0.4f, 0.45f, 1f);
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}
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}
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}
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/// <summary>已放置的卡片置灰并禁止再次拖拽。</summary>
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public void SetPlaced(bool isPlaced)
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{
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if (background != null) background.color = isPlaced ? PlacedColor : NormalColor;
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canvasGroup.alpha = isPlaced ? 0.55f : 1f;
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}
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public void OnBeginDrag(PointerEventData eventData)
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{
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if (manager == null || !manager.CanDrag(heroIndex))
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{
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return;
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}
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canvasGroup.blocksRaycasts = false;
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rectTransform.position = eventData.position;
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manager.OnCardDragStart(heroIndex);
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}
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public void OnDrag(PointerEventData eventData)
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{
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if (manager == null || !manager.CanDrag(heroIndex))
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{
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return;
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}
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rectTransform.position = eventData.position;
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manager.OnCardDragging(heroIndex, eventData.position);
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}
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public void OnEndDrag(PointerEventData eventData)
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{
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canvasGroup.blocksRaycasts = true;
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if (manager == null || !manager.CanDrag(heroIndex))
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{
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rectTransform.anchoredPosition = homePosition;
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return;
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}
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rectTransform.anchoredPosition = homePosition;
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manager.OnCardDragEnd(heroIndex, eventData.position);
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}
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}
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