74 lines
2.2 KiB
C#
74 lines
2.2 KiB
C#
using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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public class PetDelet : MonoBehaviour
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{
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private Camera mainCamera;
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// 标记物体是否正在被拖动
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private bool isDragging = false;
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private Vector3 offset;
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private Vector3 screenPosition;
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private float initialRotationZ;
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void Start()
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{
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mainCamera = Camera.main; // 获取主相机
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}
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void Update()
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{
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// 检查萌宠是否超出屏幕
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screenPosition = mainCamera.WorldToViewportPoint(transform.position);
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// 如果宠物超出屏幕，销毁该对象
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if (screenPosition.x < 0 || screenPosition.x > 1 || screenPosition.y < 0 || screenPosition.y > 1)
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{
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Destroy(gameObject);
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}
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// 鼠标按下，开始拖动
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if (Input.GetMouseButtonDown(0))
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{
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// 发射Raycast2D，检测鼠标点击的2D物体
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Ray ray = mainCamera.ScreenPointToRay(Input.mousePosition);
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RaycastHit2D hit = Physics2D.Raycast(ray.origin, ray.direction, 1000, 1 << LayerMask.NameToLayer("PetObject"));
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if (hit.collider != null && hit.collider.transform == transform)
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{
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isDragging = true; // 物体进入拖动状态
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offset = transform.position - GetMouseWorldPos(); // 计算物体和鼠标之间的偏移量
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}
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}
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// 鼠标松开，停止拖动
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if (Input.GetMouseButtonUp(0))
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{
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isDragging = false; // 物体停止拖动
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}
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// 如果物体正在被拖动，更新物体的位置
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if (isDragging)
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{
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transform.position = GetMouseWorldPos() + offset;
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}
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// 如果物体正在被拖动，更新物体的位置并保持旋转角度不变
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if (isDragging)
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{
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Vector3 newPosition = GetMouseWorldPos() + offset;
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transform.position = newPosition;
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transform.rotation = Quaternion.Euler(0, 0, initialRotationZ); // 保持物体的初始旋转角度
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}
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}
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// 获取鼠标在世界中的位置
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private Vector3 GetMouseWorldPos()
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{
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Vector3 mousePoint = Input.mousePosition; // 获取鼠标的屏幕坐标
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mousePoint.z = 0; // 因为是2D场景，不需要Z轴
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return mainCamera.ScreenToWorldPoint(mousePoint); // 转换为世界坐标
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}
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}
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