Ошибка юнити cs0101

Fixing the global namespace error in Unity

Here’s a common error that people usually run into when doing Unity scripting, and it’s one that even reasonably-skilled programmers can take awhile to fix.

The global namespace already contains a definition
Many keyboards have been destroyed in rage because of this error.

That being said, the fix is actually quite straightforward, because what the Console is trying to tell you here is simply that you have 2 copies of the same class.

There are 2 ways this can happen. You can either watch the video below, or scroll on further if you prefer to read about the issue.

Scenario #1: You have duplicate scripts

Whenever you see this error in your Console, your first order of business should be to head to your Project window, and do a search for whichever script is causing you the problem. 90% of the time, it’s 2 scripts with the file name, and containing the same class name.

Finding duplicate scripts in Unity
Just search the Project window for the script with the global namespace issue.

This should reveal more than 1 copy of the offending script. To fix this, you’ll want to delete or rename one of the script file’s name, and the class definition.

If you absolutely need both classes to use the same name, you can add a unique namespace to each of your duplicates, so that they can coexist.

PlayerController.cs

using UnityEngine;

namespace AwesomeGame {

	public class PlayerController : MonoBehaviour {
		
	}
}

This means that you’ll have to access the namespaced class(es) by their namespaces and class names.

void Start() {
	
	AwesomeGame.PlayerController pc = FindObjectByType<AwesomeGame.PlayerController>();
}

You can also make use of the using keyword to import the namespace into your scope of your other scripts, so you don’t need to prefix the namespace, but this means that you lose access to the un-namespaced (i.e. global) PlayerController.

using UnityEngine;
using AwesomeGame; 

public class CameraController : MonoBehaviour {
	
	void Start() {
		
		PlayerController pc = FindObjectByType<PlayerController>();

		
		global::PlayerController gpc = FindObjectByType<global::PlayerController>()
	}
}

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Scenario #2: You have nested classes

If you’ve tried to find duplicate script files to no avail, then the problem might be that you have nested classes that are — again — duplicates. Nested classes are classes inside your script files, declared alongside the main class in the file, and they look something like this:

PlayerController.cs

using UnityEngine

public class PlayerController : MonoBehaviour {
	void Start() {
		
	}
}


class CameraController {
	void Start() {
		
	}
}

Finding the nested classes will be a bit more challenging. You won’t be able to do a search on the Project window this time. Rather, we will be using the command line to do a string search.

Use findstr to find duplicate classes
Refer to the list below for a more detailed step-by-step.
  1. Go to your Assets folder in the Project window.
  2. Right-click on the Project window, and select Show in Explorer (or Show in Finder for Mac).
  3. Your Assets folder should appear in your File Explorer or Finder. You’ll need to open Command Prompt or Powershell (Windows) or Terminal (Mac) in that folder. For Windows, hold Shift + Right-click; for Mac, go to Services > New Terminal at Folder.
  4. Enter either one of the commands below (replace CameraController below with your own offending class), and your command line should output all occurrences of the class. Now, you can either delete the duplicate classes, or namespace them (refer to above example).

For Windows

> findstr /s /c:"CameraController" *.cs

For Mac

$ grep -r --include \*.cs "CameraController" ./

Conclusion

Every global namespace error you get should either be scenario #1, scenario #2, or some form of permutation of both of them. Once you eliminate the duplicate classes, the error(s) will go away and you can continue with your work.


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I am studying access modifiers and I came across the following error in my code. Can someone explain to me and help me solve it?
Assets\Testes\Scripts\modificadoracesso.cs(40,7): error CS0101: The namespace ‘< global namespace >’ already contains a definition for ‘Felino’

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class modificadoracesso : MonoBehaviour
{

    Felino gatoFase1; // criar objeto
    Felino gatoFase2;
    Filha fi;

    // Start is called before the first frame update
    void Start()
    {
        gatoFase1 = new Felino (); //objeto
        gatoFase2 = new Felino ();
        fi = new Filha();

        //gatoFase1.nome = "mark";
        gatoFase1.ataque();
        gatoFase1.corPelo = "Preto";
        gatoFase1.forca = 100;

        //gatoFase2.nome = "Zuck";
        gatoFase2.corPelo = "Marrom";
        gatoFase2.ataque();

        fi.acessa();

    }

    // Update is called once per frame
    void Update()
    {
        
    }
}

class Felino : MonoBehaviour
{

    //Características = atributos
    //protected trabalha dentro a classe ou dentro de uma classe filha
    protected string nome;
    public string corPelo;
    public int forca;

    //Ações = métodos
    public void ataque()
    {
        print("Ataquei");
    }

}

class Filha : Felino
{
    public void acessa()
    {
        nome = "Gato";
    }
}

I’ve looked for some answers but so far nothing works

asked Aug 19, 2020 at 17:57

ToDyToScAnO's user avatar

4

This usually occurs when you drag and drop a script to another folder, while your text editor still has the script open. When you save the file in text editor, the file is re-created in old location, so you have a duplicate script for the moved script.

answered Jul 10, 2022 at 19:44

Emmanuel Mukombero's user avatar

Unless a class is in a namespace, the class it in the ‘global namespace’. Add a namespace around your classes. I’m not saying this is the complete answer, but not using namespaces is a bad idea. Namespaces usually start with the name of your solution and will be placed there automatically when you create a new class.

Try this:

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

namespace ToDyToScAnO // <-- This is a namespace
{
  public class modificadoracesso : MonoBehaviour
  {

    Felino gatoFase1; // criar objeto
    Felino gatoFase2;
    Filha fi;

    // Start is called before the first frame update
    void Start()
    {
        gatoFase1 = new Felino (); //objeto
        gatoFase2 = new Felino ();
        fi = new Filha();

        //gatoFase1.nome = "mark";
        gatoFase1.ataque();
        gatoFase1.corPelo = "Preto";
        gatoFase1.forca = 100;

        //gatoFase2.nome = "Zuck";
        gatoFase2.corPelo = "Marrom";
        gatoFase2.ataque();

        fi.acessa();

    }

    // Update is called once per frame
    void Update()
    {
        
    }
}

class Felino : MonoBehaviour
{

    //Características = atributos
    //protected trabalha dentro a classe ou dentro de uma classe filha
    protected string nome;
    public string corPelo;
    public int forca;

    //Ações = métodos
    public void ataque()
    {
        print("Ataquei");
    }

}

 class Filha : Felino
 {
    public void acessa()
    {
        nome = "Gato";
    }
 }
}

answered Aug 19, 2020 at 18:48

Neil's user avatar

NeilNeil

11.1k3 gold badges31 silver badges57 bronze badges

0

It’s only because you have another script in your project with this name!
Maybe you accidentally duplicate it or something.

answered Oct 16, 2021 at 10:58

azin's user avatar

azinazin

214 bronze badges

Ребят, помогите пожалуйста. У меня казалось бы всего лишь 27 строчек кода, но откуда в 3 ошибки, не понятно… Вроде всё правильно на писал.
1 Ошибка CS0101: The namespace » already contains a definition for ‘Destroyable’
2 Ошибка CS0111: Type ‘Destroyable’ already defines a member called ‘Start’ with the same parameter types
3 Ошибка CS0111: Type ‘Destroyable’ already defines a member called ‘Update’ with the same parameter types

Мой код

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Destroyable : MonoBehaviour
{
    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        
    }

    private void OnCollisionEnter2D(Collision2D collision)
    {
        if (collision.gameObject.tag == "Player")
        {
            collision.gameObject.GetComponent<Rigidbody2D>().AddForce(transform.up * 8f, ForceMode2D.Impulse);
            gameObject.GetComponentInParent<Enemy>().startDeath();
        }
    }
}

Ошибки CS0111 и CS0101 — это распространенные проблемы, которые могут возникнуть при разработке игр на базе движка Unity. В этой статье мы рассмотрим данные ошибки и поделимся соображениями о том, как их решить.

Ошибка CS0111: Type already defines a member called ‘member’ with the same parameter types

Ошибка CS0111 возникает, когда в классе или структуре объявляется член с таким же именем и типом параметров, как уже существующий член. Это может вызывать путаницу и проблемы при вызове данного члена из других частей кода. Давайте рассмотрим пример:

public class MyClass
{
    public void MyMethod()
    {
        // Код метода
    }

    public void MyMethod()
    {
        // Код метода
    }
}

В данном примере два метода MyMethod имеют одинаковое имя и параметры, что вызывает ошибку CS0111. Чтобы ее исправить, необходимо переименовать один из этих методов или изменить параметры для создания уникального сигнатуры метода.

Ошибка CS0101: The namespace ‘namespace’ already contains a definition for ‘type’

Ошибка CS0101 возникает, когда в пространстве имен уже определен тип с тем же именем, что и тип, который вы пытаетесь создать. Это может стать причиной конфликтов и неправильного поведения кода. Рассмотрим следующий пример:

namespace MyNamespace
{
    public class MyClass
    {
        // Код класса
    }
}

namespace MyNamespace
{
    public class MyClass
    {
        // Код класса
    }
}

В данном примере два класса MyClass определены в одном пространстве имен, что вызывает ошибку CS0101. Для решения этой проблемы достаточно переименовать один из классов или поместить их в разные пространства имен.

Решения и рекомендации

Для предотвращения возникновения ошибок CS0111 и CS0101 во время разработки в Unity, следует придерживаться следующих рекомендаций:

  1. При объявлении методов, свойств и полей в классах или структурах, используйте уникальные имена, чтобы избежать конфликтов и путаницы.
  2. Тщательно проверяйте пространства имен в вашем проекте, чтобы убедиться, что имена типов уникальны.
  3. При возникновении ошибки CS0111 или CS0101, сохраняйте спокойствие и тщательно анализируйте код. Переименуйте конфликтующие методы или классы, чтобы создать уникальные имена.
  4. Используйте средства разработки Unity, такие как IntelliSense и отладчик, чтобы быстро обнаружать и исправлять ошибки.

Исправление ошибок CS0111 и CS0101 может быть довольно простым и требует лишь небольших изменений в коде. Важно быть внимательным и осторожным при объявлении и использовании компонентов в Unity, чтобы избежать подобных проблем.

CS0101 is a syntax error in Unity that occurs when there is ambiguity in naming variables. This error code usually appears when you have defined multiple variables with the same name in the same scope.

For example, if you have two variables with the same name but different data types in the same class or function, Unity cannot determine which variable to use as they have the same name. To resolve this issue, you will need to rename one of the variables to make their names unique.

Here’s an example of the CS0101 syntax error in C#:

int health = 100;
string health = «Full»;

// This will generate the CS0101 error code as «health» is used twice, causing ambiguity in the variable name.

To fix this error, you can rename one of the variables using a unique name:

int healthPoints = 100;
string healthStatus = «Full»;

// This will resolve the CS0101 error, as each variable now has a unique name and there is no ambiguity.

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