How to load a scene in Unity C#

Hello programmers, In this article, I will show how “How to load a scene in Unity C#”.

Before we start the building process, we need to know a few concepts. Let’s first discuss them one by one.

SceneManager

SceneManager in Unity manages the scenes at run-time.

To define the SceneManager, we need to add “using UnityEngine.SceneManagement” to the System NameSpace on the top.

using UnityEngine.SceneManagement;

LoadScene in Unity

LoadScene loads the scene by scene name or index value in build in the system.

Load scene by index value:

public int buildIndex;
SceneManager.LoadScene(buildIndex);

Load Scene by scene name:

public string SceneName;

public void LoadScene()
{
    SceneManager.LoadScene(SceneName);
}

The below-given program shows “How to load a scene in Unity C#”

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

public class loadLevel : MonoBehaviour
{
    public int iLevelToLoad;
    public string sLevelToLoad;

    public bool userIntegerToLoadLevel = false;
    void Start()
    {
        
    }

    void Update()
    {
        
    }

    private void OnTriggerEnter2D(Collider2D collision)
    {
        GameObject collisionGameObject = collision.gameObject;

        if(collisionGameObject.name == "Player")
        {
            LoadScene();
        }
    }

    void LoadScene()
    {
        if (userIntegerToLoadLevel)
        {
            SceneManager.LoadScene(iLevelToLoad);
        }
        else
        {
            SceneManager.LoadScene(sLevelToLoad);
        }
    }
}

In the above code when the player collides with the gameObject it loads New Scene.

Output:

Scene 1

When the player touches the black object Load New Scene :

New Scene: