unity switch to scene and transfer data code example

Example: unity switch to scene and transfer data

using UnityEngine;

/// 
Manages data for persistance between levels.
public class DataManager : MonoBehaviour 
{
    /// 
Static reference to the instance of our DataManager
    public static DataManager instance;

    /// 
The player's current score.
    public int score;
    /// 
The player's remaining health.
    public int health;
    /// 
The player's remaining lives.
    public int lives;

    /// 
Awake is called when the script instance is being loaded.
    void Awake()
    {
        // If the instance reference has not been set, yet, 
        if (instance == null)
        {
            // Set this instance as the instance reference.
            instance = this;
        }
        else if(instance != this)
        {
            // If the instance reference has already been set, and this is not the
            // the instance reference, destroy this game object.
            Destroy(gameObject);
        }

        // Do not destroy this object, when we load a new scene.
        DontDestroyOnLoad(gameObject);
    }
}