请查找以下脚本。

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class BulletSpawn : MonoBehaviour
{
public GameObject bulletPrefab; // The prefab for the bullet object
public Canvas canvas; // The canvas that the crosshair is under
public Image crosshairImage; // The crosshair image
public float bulletSpeed = 10f; // The speed of the bullet

void Update()
{
if (Input.GetKeyDown(KeyCode.E)) // Check if the space key is pressed
{
// Use the Canvas.worldCamera property to get a reference to the world camera
Camera worldCamera = canvas.worldCamera;

// Use the Image.rectTransform property to get a reference to the crosshair's transform
RectTransform crosshairTransform = crosshairImage.rectTransform;

// Use the Camera.WorldToScreenPoint() method to convert the crosshair's position to screen space
Vector3 screenPos = worldCamera.WorldToScreenPoint(crosshairTransform.position);

// Use the Camera.ScreenToWorldPoint() method to convert the screen space position to world space
Vector3 worldPos = worldCamera.ScreenToWorldPoint(screenPos);

// Use the Instantiate() method to create a new instance of the bulletPrefab object
GameObject newBullet = Instantiate(bulletPrefab, worldPos, Quaternion.identity);

// Use the Rigidbody.velocity property to set the velocity of the bullet
newBullet.GetComponent<Rigidbody>().velocity = worldCamera.transform.forward * bulletSpeed;
}
}
}

在这里，我们是产卵子弹的基础上十字线和它不工作。
我们尝试了繁殖垂直于画布图像的子弹，这是一个十字准线，它没有扩散