英文:
Inheriting Constructors in Unity?
问题
为了提供上下文，我从这个教程 中获取了这段代码，特别是在2:27:28处。
我有两个类，Player 和 Warrior。我想让 Warrior 类继承自 Player 类。Player 类如下所示：
public class Player : MonoBehaviour
{
// 变量和属性
private string _playerName;
public string pName { get => _playerName; set => _playerName = value; }
private int _playerHealth;
public int Health { get => _playerHealth; set => _playerHealth = value; }
private int _playerPower;
public int Power { get => _playerPower; set => _playerPower = value; }
// 构造函数
public Player() { } // 构造函数 1
public Player(string name, int health, int power) // 构造函数 2
{
pName = name;
Health = health;
Power = power;
}
}
而 Warrior 类如下所示：
public class Warrior : Player
{
public Warrior(string name, int health, int power)
{
pName = name;
Health = health;
Power = power;
}
}
每当我移除 Player 类中的构造函数 1（即空白的构造函数），我在 Warrior 构造函数中会收到一个错误。但如果我移除 Warrior 构造函数本身，那么在声明 Warrior 类本身时会出现错误。我不明白为什么需要添加构造函数 1，尤其是当我已经有 Player 类中的构造函数 2 时。
我是否遗漏了什么？或者父类是否总是需要额外的构造函数，每当子类被声明时？如果是这样，为什么？或者在UNITY中继承构造函数工作方式不同吗？
我尝试移除构造函数 1 并在VS中使用 CTRL + . 命令，甚至调试器也让我感到困惑。我还尝试在网上搜索，但没有找到答案。
英文:
For context, I got this code from this tutorial, particularly at 2:27:28.
I have two classes, Player and Warrior. I want the Warrior class to inherit from the Player class. The Player class looks like this:
public class Player: MonoBehaviour
{
//Variables and Properties
private string _playerName;
public string pName { get => _playerName; set => _playerName = value; }
private int _playerHealth;
public int Health { get => _playerHealth ; set => _playerHealth = value ; }
private int _playerPower;
public int Power { get => _playerPower; set => _playerPower = value ; }
//Constructors
public Player() { } //Constructor 1
public Player(string name, int health, int power) //Constructor 2
{
pName = name;
Health = health;
Power = power;
}
}
And the Warrior class looks like this:
public class Warrior : Player
{
public Warrior(string name, int health, int power)
{
pName = name;
Health = health;
Power = power;
}
}
Whenever I remove Constructor 1 in Player (the blank one), I get an error in the Warrior constructor. But if I remove the Warrior Constructor itself, then I get an error when declaring the Warrior class itself. I don't understand why it would be necessary to add Constructor 1, especially when I already have Constructor 2 in the Player class, to begin with.
Is there something I am missing? Or does a parent class always need an extra constructor whenever the child is being declared? And if so, Why? Or maybe inheriting constructors in UNITY works differently?
I tried removing Constructor 1 and using the command CTRL + . in VS, and even the debugger confuses me. I also tried googling online to no avail.
答案1
得分: -1
像rshepp说的，你可能不应该在MonoBehaviors中使用构造函数。而是使用Start()和Awake()来初始化。
英文:
Like rshepp said, you probably shouldn't use constructors with MonoBehaviors. Instead, use Start() and Awake() to initialize.
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