103 lines
2.7 KiB
C#
103 lines
2.7 KiB
C#
using DG.Tweening;
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using QFramework;
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using System;
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using UnityEngine;
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using UnityEngine.Events;
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public class ObjDrag : MonoBehaviour, IObjDrag
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{
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private Vector3 offset;
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bool isOn = false;
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Vector3 startPosition;
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UnityEvent<GameObject> OnDragEnd = new UnityEvent<GameObject>();
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bool IObjDrag.isOn { get => isOn; set => isOn = value; }
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UnityEvent<GameObject> IObjDrag.OnDragEnd
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{
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get
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{
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if (OnDragEnd == null)
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{
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OnDragEnd = new UnityEvent<GameObject>();
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}
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return OnDragEnd;
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}
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}
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void Start()
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{
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startPosition = gameObject.transform.position;
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}
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private void OnMouseUp()
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{
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if (isOn)
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{
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Show3DCamera.instance.lockMove = false;
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OnDragEnd?.Invoke(gameObject);
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}
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}
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void OnMouseDown()
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{
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if (isOn)
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{
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// 获取鼠标在相机视角平面上的世界坐标
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Vector3 mouseWorldPos = GetMouseWorldPositionOnPlane();
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// 计算物体位置与鼠标点击点在世界坐标中的偏移量
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offset = transform.position - mouseWorldPos;
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Show3DCamera.instance.lockMove = true;
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}
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}
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void OnMouseDrag()
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{
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if (isOn)
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{
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// 获取鼠标在相机视角平面上的世界坐标
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Vector3 mouseWorldPos = GetMouseWorldPositionOnPlane();
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// 根据偏移量更新物体的位置
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transform.position = mouseWorldPos + offset;
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}
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}
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private Vector3 GetMouseWorldPositionOnPlane()
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{
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// 获取鼠标在屏幕上的位置
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Vector3 mouseScreenPos = Input.mousePosition;
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mouseScreenPos.z = Camera.main.WorldToScreenPoint(transform.position).z; // 保持物体与相机的深度一致
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// 将鼠标的屏幕坐标转换为世界坐标
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Vector3 mouseWorldPos = Camera.main.ScreenToWorldPoint(mouseScreenPos);
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// 计算相机视角平面的法线方向（相机的正前方）
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Vector3 cameraForward = Camera.main.transform.forward;
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// 创建一个平面，法线方向为相机的正前方，平面通过物体的当前位置
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Plane plane = new Plane(cameraForward, transform.position);
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// 从相机发射一条射线，指向鼠标的世界坐标
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Ray ray = Camera.main.ScreenPointToRay(mouseScreenPos);
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float distance;
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if (plane.Raycast(ray, out distance))
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{
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// 返回射线与平面的交点
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return ray.GetPoint(distance);
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}
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// 如果没有相交，返回物体的当前位置
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return transform.position;
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}
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// 双击事件处理函数
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public void OnDoubleClick()
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{
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// 在这里可以添加你想要执行的双击逻辑
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// 例如，将物体重置到起始位置
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//transform.position = startPosition;
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transform.DOMove(startPosition, 0.1f);
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}
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} |