组合两个实例化脚本 (Unity 3D)

Question

我需要将以下脚本组合成一个包含两个函数的脚本，一个实例化数组中的下一个预制件，另一个实例化数组中的前一个预制件(它是一个虚拟游览应用程序(。两者都应该破坏当前的预制件。然后，我可以通过事件触发器调用函数。

我有"下一个预制件"脚本的此代码。

public GameObject[] Spheres;
int currentIndex = 0;
GameObject currentObject;
public Camera MainCamera;
void OnMouseDown()
{
if (Input.GetMouseButtonDown(0))
if (gameObject.tag == "ArrowNEXT")
{
Vector3 rayOrigin = MainCamera.ViewportToWorldPoint(new Vector3(0.1f, 0.1f, 0));
RaycastHit hit;
if (Physics.Raycast(rayOrigin, MainCamera.transform.forward, out hit))
{
if (hit.collider != null)
{
{
Destroy(currentObject);
currentIndex++;
if (currentIndex > Spheres.Length - 1) currentIndex = 0;
currentObject = Instantiate(Spheres[currentIndex]);
}
}
}

}
}

我需要将其与以下内容相结合：

using UnityEngine;

public class RayCastPrevFIX: MonoBehaviour
{
public GameObject[] Spheres;
int currentIndex = 0;
GameObject currentObject;
public Camera MainCamera;
void OnMouseDown()
{
if (Input.GetMouseButtonDown(0))
if (gameObject.tag == "ArrowPREV")
{
Vector3 rayOrigin = MainCamera.ViewportToWorldPoint(new Vector3(0.1f, 0.1f, 0));
RaycastHit hit;
if (Physics.Raycast(rayOrigin, MainCamera.transform.forward, out hit))
{
if (hit.collider != null)
{
{
Destroy(currentObject);
currentIndex--;
if (currentIndex < 0) currentIndex = Spheres.Length - 1;
currentObject = Instantiate(Spheres[currentIndex]);
}
}
}

}
}
}

我该怎么做？任何帮助将不胜感激。到目前为止，我有这个：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class SphereSwap : MonoBehaviour
{ 
public GameObject[] Spheres;
int currentIndex = 0;
GameObject currentObject;
public Camera MainCamera;
void Next()
{
Destroy(currentObject);
currentIndex++;
if (currentIndex > Spheres.Length - 1) currentIndex = 0;
currentObject = Instantiate(Spheres[currentIndex]);
}
void Previous()
{
Destroy(currentObject);
currentIndex--;
if (currentIndex < 0) currentIndex = Spheres.Length - 1;
currentObject = Instantiate(Spheres[currentIndex]);
}
}

Answer 1

你走在正确的道路上，但你可以缩短代码，并在这两种情况下使用一个函数以避免样板：

using UnityEngine;
public class SphereSwap : MonoBehaviour
{
public GameObject[] Spheres;
int currentIndex = 0;
GameObject currentObject;
public Camera MainCamera;
const string ArrowPrevTag = "ArrowPREV";
const string ArrowNextTag = "ArrowNEXT";

private void HandleClick(bool next)
{
if(Spheres == null || Spheres.Length == 0)
{
Debug.Log($"Spheres list is empty, nothing to swap.");
return;
}
Vector3 rayOrigin = MainCamera.ViewportToWorldPoint(new Vector3(0.1f, 0.1f, 0));
RaycastHit hit;
if (Physics.Raycast(rayOrigin, MainCamera.transform.forward, out hit))
{
if (hit.collider != null)
{
// destroy current sphere.
Destroy(currentObject);
// go next or previous.
currentIndex += next ? 1 : -1;
// circular clamp if overflow
if (currentIndex < 0)
currentIndex = Spheres.Length - 1;
else if (currentIndex >= Spheres.Length)
currentIndex = 0;
// finally do instantiate.
currentObject = Instantiate(Spheres[currentIndex]);
}
}
}
private void OnMouseDown()
{
if (Input.GetMouseButtonDown(0))
{
// 'CompareTag' is more efficient than gameobject.tag == "sometag"
if (gameObject.CompareTag(ArrowNextTag))
HandleClick(true);
else if (gameObject.CompareTag(ArrowPrevTag))
HandleClick(false);
}
}
}