问题

我正在开发一个Unity游戏。我有3个不同的模型，我想要做的是，在游戏进行几秒钟后，每次启动游戏时随机选择其中一个模型显示在屏幕上。我该如何做到这一点？请帮助。

答案1

得分: 1

Create a field to store the models

创建一个字段来存储模型

public List<GameObject> myModels;

然后在启动时随机选择一个

private void Start()
{
   var randomizedIndex = Random.Range(0, myModels.Count);
   var selectedModel = myModels[randomizedIndex];
   // 实例化所选模型
}

public List<GameObject> myModels;

private void Start()
{
   var randomizedIndex = Random.Range(0, myModels.Count);
   var selectedModel = myModels[randomizedIndex];
   // instantiate the selected model
}

答案2

得分: 1

using System.Collections.Generic;
using UnityEngine;

public class RandomObjectSpawner : MonoBehaviour
{
    [SerializeField]
    private float waitTime;    // 等待实例化对象之前的时间

    [SerializeField]
    private List<GameObject> models;   // 通过检视面板添加模型

    private GameObject selectedModel;

    private float timer;

    void Start()
    {
        timer = 0f;

        int randomizedIndex = Random.Range(0, models.Count);
        selectedModel = models[randomizedIndex];
    }

    void Update()
    {

        timer += Time.deltaTime;

        if (timer >= waitTime)
        {
            Instantiate(selectedModel);  // 实例化我们的模型

        }
    }
}

注意

您需要通过检视面板分配您的模型和等待时间。

您需要将等待时间设置为大于0的值。

您可以修改对象生成的位置，默认情况下将生成在具有此脚本的对象的位置。

或者，您可以使用您选择的生成位置

Instantiate(selectedModel, spawnPosition, Quaternion.identity);

<details>
<summary>英文:</summary>

    using System.Collections.Generic;
    using UnityEngine;
    
    public class RandomObjectSpawner : MonoBehaviour
    {
        [SerializeField]
        private float waitTime;    // The time You want to wait before Instantiating an object
    
        [SerializeField]
        private List&lt;GameObject&gt; models;   // Your models Add them through the inspector
    
        private GameObject selectedModel; 
    
        private float timer; 
    
        void Start()
        {
            timer = 0f;
    
            int randomizedIndex = Random.Range(0, models.Count);
            selectedModel = models[randomizedIndex];
        }
    
        
        void Update()
        {
    
            timer += Time.deltaTime;
    
            if(timer &gt;= waitTime)
            {
                Instantiate(selectedModel);  // Instantiate our model
                
            }
        }
     }


## Notes ##

You have to assign your models , WaitTime through the inspector .

You need to set the waitTime to a value bigger than 0 .

You can modify the Position an object spawns at , by default it will spawn in the position of the object with this script .


 or You can use a spawnPosition of your choice
 

    Instantiate(selectedModel,spawnPosition,Quaternion.identity); 



</details>