提交小游戏项目
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using UnityEngine;
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using UnityEngine.EventSystems;
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using UnityEngine.UI;
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using System.Collections;
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using TowerClimberChronicles;
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using DG.Tweening;
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[RequireComponent(typeof(RectTransform))]
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public class DragPuzzle : MonoBehaviour, IBeginDragHandler, IDragHandler, IEndDragHandler, IPointerDownHandler
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{
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[Header("Snap config")]
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public Vector2 snapTarget;
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public float snapDistance;
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private bool lockOnSnap = true;
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[Header("State")]
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public bool locked = false; // 默认可交互，若要初始不可拖动改为 true
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private RectTransform rect;
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private Canvas rootCanvas;
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private Camera uiCamera;
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private ScrollRect scrollRect;
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private bool isFlying = false;
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private Vector2 pointerOffset; // 在当前父Rect空间的偏移
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private Vector3 cachedLocalScale;
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private Image overlay;
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void Awake()
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{
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rect = GetComponent<RectTransform>();
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rootCanvas = GetRootCanvas(transform);
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scrollRect = GameObject.Find("ScrollView")?.GetComponent<ScrollRect>();
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// 必须存在：EventSystem + Canvas(含GraphicRaycaster) + 本物体或子物体上有Graphic且RaycastTarget启用
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uiCamera = rootCanvas && rootCanvas.renderMode == RenderMode.ScreenSpaceOverlay
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? null
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: (rootCanvas ? rootCanvas.worldCamera : null);
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cachedLocalScale = rect.localScale;
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GameDispatcher.Instance.AddListener(GameMsg.PuzzleIn, PlayHighlight);
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overlay = transform.Find("mask_obj/light_obj").GetComponent<Image>();
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}
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void OnDestroy()
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{
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GameDispatcher.Instance.RemoveListener(GameMsg.PuzzleIn, PlayHighlight);
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}
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private Canvas GetRootCanvas(Transform t)
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{
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Canvas c = t.GetComponentInParent<Canvas>();
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return c ? c.rootCanvas : null;
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}
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public void OnPointerDown(PointerEventData eventData)
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{
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if (locked || isFlying) return;
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// 不在点击阶段切换父物体，避免点击瞬间跳位/消失
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// 仅计算当前父Rect空间的指针偏移
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Vector2 parentLocalPoint;
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RectTransformUtility.ScreenPointToLocalPointInRectangle(
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rect.parent as RectTransform,
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eventData.position,
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uiCamera,
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out parentLocalPoint
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);
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pointerOffset = parentLocalPoint - rect.anchoredPosition;
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}
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// 替换你当前的 OnBeginDrag（保留核心逻辑，补回“中心锚点”）
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public void OnBeginDrag(PointerEventData eventData)
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{
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if (locked || isFlying) return;
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GameDispatcher.Instance.Dispatch(GameMsg.PuzzleTimeStart);
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// 提升到根 Canvas，保持世界坐标
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if (rootCanvas && rect.parent != rootCanvas.transform)
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{
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Vector3 worldPos = rect.position;
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rect.SetParent(rootCanvas.transform, true);
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rect.position = worldPos;
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rect.localScale = cachedLocalScale;
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// 关键：开始拖拽时把锚点/枢轴改为中心，但保持世界位置不变
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SetAnchorPivotCenterKeepWorld(rect);
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// 重新计算偏移（父变成根 Canvas）
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Vector2 canvasLocalPoint;
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RectTransformUtility.ScreenPointToLocalPointInRectangle(
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rootCanvas.transform as RectTransform,
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eventData.position,
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uiCamera,
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out canvasLocalPoint
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);
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pointerOffset = canvasLocalPoint - rect.anchoredPosition;
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}
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transform.SetAsLastSibling();
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}
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public void OnDrag(PointerEventData eventData)
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{
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if (locked || isFlying) return;
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// 在当前父Rect空间移动（通常是根Canvas）
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RectTransform parentRect = rect.parent as RectTransform;
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Vector2 parentLocalPoint;
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RectTransformUtility.ScreenPointToLocalPointInRectangle(
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parentRect,
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eventData.position,
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uiCamera,
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out parentLocalPoint
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);
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rect.anchoredPosition = parentLocalPoint - pointerOffset;
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}
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// 在类里新增一个辅助方法：将锚点/枢轴改为中心，但保持世界位置不变
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private static void SetAnchorPivotCenterKeepWorld(RectTransform rt)
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{
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// 记录世界位置与旋转
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Vector3 worldPos = rt.position;
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Quaternion worldRot = rt.rotation;
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// 改锚点与枢轴为中心
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rt.anchorMin = new Vector2(0.5f, 0.5f);
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rt.anchorMax = new Vector2(0.5f, 0.5f);
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rt.pivot = new Vector2(0.5f, 0.5f);
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// 恢复世界位置与旋转（避免位置跳变）
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rt.position = worldPos;
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rt.rotation = worldRot;
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}
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public void PlayHighlight(object obj)
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{
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Vector2 vec2 = (Vector2)obj;
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float dist = Vector2.Distance(rect.position, vec2);
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if (!locked && (dist > 0.1f)) return;
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float delay = dist * 0.005f;
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DOVirtual.DelayedCall(delay, () =>
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{
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// 清理旧动画
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overlay.DOKill(true);
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rect.DOKill(true);
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// overlay 从透明开始
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var c = overlay.color;
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overlay.color = new Color(c.r, c.g, c.b, 0f);
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// 高亮动画：淡入再淡出
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overlay.DOFade(0.4f, 0.15f).SetEase(Ease.InOutSine)
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.OnComplete(() =>
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{
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overlay.DOFade(0f, 0.15f).SetEase(Ease.InOutSine);
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});
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// 缩放动画：先缩小再放大
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rect.localScale = cachedLocalScale;
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rect.DOScale(cachedLocalScale * 0.99f, 0.3f).SetEase(Ease.InOutSine)
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.OnComplete(() =>
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{
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rect.DOScale(cachedLocalScale, 0.3f).SetEase(Ease.InOutSine);
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});
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});
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}
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private ManualHorizontalList manualHorizontalList;
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private void RefereshList()
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{
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if (manualHorizontalList == null) manualHorizontalList = GameObject.Find("puzzle_parent").GetComponent<ManualHorizontalList>();
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manualHorizontalList.Refresh();
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}
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public void OnEndDrag(PointerEventData eventData)
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{
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if (locked || isFlying) return;
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// 近吸附
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float dist = Vector2.Distance(rect.anchoredPosition, snapTarget);
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if (dist <= snapDistance)
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{
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rect.anchoredPosition = snapTarget;
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Vector2 snapPos = rect.position;
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GameDispatcher.Instance.Dispatch(GameMsg.PuzzleIn, snapPos);
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rect.SetSiblingIndex(2);
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if (lockOnSnap) locked = true;
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AudioManager.Instance.PlayDynamicEffect(AudioConst.puzzle_click);
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RefereshList();
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return;
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}
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// 若释放在 ScrollRect viewport 内，归还到 content 并插入排序
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if (scrollRect)
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{
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RectTransform viewport = scrollRect.viewport ? scrollRect.viewport : scrollRect.GetComponent<RectTransform>();
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if (RectTransformUtility.RectangleContainsScreenPoint(viewport, eventData.position, eventData.pressEventCamera))
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{
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RectTransform content = scrollRect.content;
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Vector3 worldPos = rect.position;
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rect.SetParent(content, true); // 保持世界坐标再转本地
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Vector2 localPoint = content.InverseTransformPoint(worldPos);
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rect.anchoredPosition = localPoint;
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int insertIndex = content.childCount;
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for (int i = 0; i < content.childCount; i++)
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{
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RectTransform child = content.GetChild(i) as RectTransform;
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if (localPoint.x < child.localPosition.x)
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{
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insertIndex = i;
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break;
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}
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}
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rect.SetSiblingIndex(insertIndex);
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rect.localScale = cachedLocalScale;
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}
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RefereshList();
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}
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}
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// ---------------- 飞行吸附（忽略锁定即返回） ----------------
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public void FlyAndSnap(float duration = 0.5f)
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{
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if (locked || isFlying) return;
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isFlying = true;
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GameDispatcher.Instance.Dispatch(GameMsg.PuzzleTimeStart);
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FlyToSnapTarget(duration);
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}
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private void FlyToSnapTarget(float duration)
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{
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// 在根Canvas中移动
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if (rootCanvas && rect.parent != rootCanvas.transform)
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{
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Vector3 worldPos = rect.position;
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rect.SetParent(rootCanvas.transform, true);
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rect.position = worldPos;
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rect.localScale = cachedLocalScale;
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}
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// 关键：自动飞行时也改锚点/枢轴为中心，但保持世界位置不变
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Vector3 savedWorldPos = rect.position;
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Quaternion savedWorldRot = rect.rotation;
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rect.anchorMin = rect.anchorMax = new Vector2(0.5f, 0.5f);
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rect.pivot = new Vector2(0.5f, 0.5f);
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rect.position = savedWorldPos;
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rect.rotation = savedWorldRot;
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Vector2 startPos = rect.anchoredPosition;
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Vector2 target = snapTarget;
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// 如果不需要动画，直接完成
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if (duration <= 0f || startPos == target)
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{
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rect.anchoredPosition = target;
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DoneFly();
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return;
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}
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// 使用 DOTween 动画
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rect.DOAnchorPos(target, duration)
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.SetEase(Ease.Linear)
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.OnComplete(() =>
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{
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rect.anchoredPosition = target;
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DoneFly();
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});
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}
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private void DoneFly()
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{
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if (lockOnSnap) locked = true;
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float dist = Vector2.Distance(rect.anchoredPosition, snapTarget);
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rect.anchoredPosition = snapTarget;
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Vector2 snapPos = rect.position;
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GameDispatcher.Instance.Dispatch(GameMsg.PuzzleIn, snapPos);
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AudioManager.Instance.PlayDynamicEffect(AudioConst.puzzle_click);
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RefereshList();
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isFlying = false;
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}
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// 外部可显式设置锁定
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public void SetLocked(bool value) => locked = value;
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}
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