问题描述
说我有一个名为Bullet的预制件，并带有一个名为BulletControl.cs的脚本.
Say I had a prefab called Bullet with a script attached called BulletControl.cs.
我可以将其实例化为:GameObject bulletInstance = Instantiate(Bullet, transform);或者我可以这样做:BulletControl bulletInstance = Instantiate(Bullet, transform);
I could instantiate it as: GameObject bulletInstance = Instantiate(Bullet, transform);Or I could do: BulletControl bulletInstance = Instantiate(Bullet, transform);
我最初认为实例化为GameObject只是一种更通用的类型，它使您可以访问其他参数，例如transform.据我所知，实例化不像使用new关键字，因此我不认为在声明bulletInstance的类型时，我不会创建BulletControl类的实例.这是怎么回事?
I originally thought that instantiating as a GameObject was just a more general type that gave you access to other parameters like transform. Instantiating, to my understanding, isn't like using the new keyword, so I don't think that when I declare bulletInstance's type I'm creating an instance of the class BulletControl. What's going on here?
推荐答案
函数以 Object 作为参数.
The Instantiate function takes Object as argument.
在Unity中，每个GameObject和组件/脚本都继承自 Object 直接或间接.
In Unity, every GameObject and components/scripts inherits from Object directly or indirectly.
假设您的脚本名称为YourScript:
YourScript继承自MonoBehaviour
public class YourScript : MonoBehaviour
{
}
然后MonoBehaviour继承自Behaviour
public class MonoBehaviour : Behaviour
{
}
和Behaviour继承自Component.
public class Behaviour : Component
{
}
最后，Component继承自Object.
public class Component : Object
{
}
对于GameObject，它直接从Object继承.
For GameObject, it inherits from Object directly.
public sealed class GameObject : Object
{
}
因此，任何从Object继承的类都应该能够使用 Instantiate 函数.
Because of this, any class that inherits from Object should be able to be instantiated with the Instantiate function.
如果脚本不是从MonoBehaviour继承的，则可以使用new关键字像普通的C#程序一样创建它的新实例.如果它继承自MonoBehaviour，则必须使用 Instantiate 或 AddComponent 函数.有关更多信息，请参见此帖子.
If your script does not inherit from MonoBehaviour then you can use the new keyword to create a new instance of it like a normal C# program. If it inherits from MonoBehaviour, you have to use the Instantiate or the AddComponent function. See this post for more information.
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