Question

之前确实有效，但我现在无法弄清楚出了什么问题。在层次结构中，我有一个GameObject，我将它重命名为Sphere。此Sphere标记为Sphere。

但是在运行游戏时，所有克隆的对象都在层次结构中，而不是作为Sphere中的子项。在运行游戏时，它自己的Sphere会被删除。

这是运行游戏前Sphere游戏对象的屏幕截图： Sphere Builder脚本附加到Sphere：

此截图是在运行游戏时：所有克隆都应该在Sphere游戏对象下：

这是剧本：

using System;
using UnityEngine;
using Random = UnityEngine.Random;
using System.Collections;
using System.Collections.Generic;

public class SphereBuilder : MonoBehaviour
{
    public GameObject SpaceShip;

    // for tracking properties change
    private Vector3 _extents;
    private int _sphereCount;
    private float _sphereSize;

    /// <summary>
    ///     How far to place spheres randomly.
    /// </summary>
    public Vector3 Extents;

    /// <summary>
    ///     How many spheres wanted.
    /// </summary>
    public int SphereCount;
    public float SphereSize;

    private void OnValidate()
    {
        // prevent wrong values to be entered
        Extents = new Vector3(Mathf.Max(0.0f, Extents.x), Mathf.Max(0.0f, Extents.y), Mathf.Max(0.0f, Extents.z));
        SphereCount = Mathf.Max(0, SphereCount);
        SphereSize = Mathf.Max(0.0f, SphereSize);
    }

    private void Reset()
    {
        Extents = new Vector3(250.0f, 20.0f, 250.0f);
        SphereCount = 100;
        SphereSize = 20.0f;
    }

    private void Update()
    {
        UpdateSpheres();
    }

    private void UpdateSpheres()
    {
        if (Extents == _extents && SphereCount == _sphereCount && Mathf.Approximately(SphereSize, _sphereSize))
            return;

        // cleanup
        var spheres = GameObject.FindGameObjectsWithTag("Sphere");
        foreach (var t in spheres)
        {
            if (Application.isEditor)
            {
                DestroyImmediate(t);
            }
            else
            {
                Destroy(t);
            }
        }

        var withTag = GameObject.FindWithTag("Terrain");
        if (withTag == null)
            throw new InvalidOperationException("Terrain not found");

        for (var i = 0; i < SphereCount; i++)
        {
            var o = Instantiate(SpaceShip);
            o.tag = "Sphere";
            o.transform.localScale = new Vector3(SphereSize, SphereSize, SphereSize);

            // get random position
            var x = Random.Range(-Extents.x, Extents.x);
            var y = Extents.y; // sphere altitude relative to terrain below
            var z = Random.Range(-Extents.z, Extents.z);

            // now send a ray down terrain to adjust Y according terrain below
            var height = 10000.0f; // should be higher than highest terrain altitude
            var origin = new Vector3(x, height, z);
            var ray = new Ray(origin, Vector3.down);
            RaycastHit hit;
            var maxDistance = 20000.0f;
            var nameToLayer = LayerMask.NameToLayer("Terrain");
            var layerMask = 1 << nameToLayer;
            if (Physics.Raycast(ray, out hit, maxDistance, layerMask))
            {
                var distance = hit.distance;
                y = height - distance + y; // adjust
            }
            else
            {
                Debug.LogWarning("Terrain not hit, using default height !");
            }

            // place !
            o.transform.position = new Vector3(x, y, z);
        }

        _extents = Extents;
        _sphereCount = SphereCount;
        _sphereSize = SphereSize;
    }
}

Answer 1

实例化对象后，设置转换父级。

o.transform.SetParent(gameObject.transform);

为什么所有克隆的对象都不是游戏对象Sphere下的孩子？

1 个答案: