Prompt Title: Unity AdMob Integration.

To call the AdManager script and show the interstitial ad on scenes, you can follow these steps:

1. Create an empty GameObject in each scene where you want to show the interstitial ad.
2. Attach the AdManager script to the empty GameObject in each scene.
3. Modify the AdManager script to handle scene changes and show the interstitial ad accordingly.

Here's an updated version of the AdManager script that includes scene change handling:

csharpCopy code
using UnityEngine;
using UnityEngine.SceneManagement;
using GoogleMobileAds.Api;
using System;

public class AdManager : MonoBehaviour
{
    private InterstitialAd interstitial;
    private string adUnitId = "YOUR_INTERSTITIAL_AD_UNIT_ID";

    private const long MINIMUM_RAM_SIZE = 1 * 1024 * 1024 * 1024; // Minimum RAM size in bytes (1GB)

    void Start()
    {
        // Check if the device meets the minimum RAM requirement.
        long totalRAM = SystemInfo.systemMemorySize * 1024 * 1024;
        if (totalRAM < MINIMUM_RAM_SIZE)
        {
            Debug.Log("Device does not meet the minimum RAM requirement for showing interstitial ads.");
            return;
        }

        // Check if the internet connection is available.
        if (Application.internetReachability == NetworkReachability.NotReachable)
        {
            Debug.Log("Internet connection is not available. Interstitial ad cannot be shown.");
            return;
        }

        // Initialize the Google Mobile Ads SDK.
        MobileAds.Initialize(initStatus => { });

        // Request an interstitial ad.
        interstitial = new InterstitialAd(adUnitId);

        // Load the interstitial ad with the request.
        AdRequest request = new AdRequest.Builder().Build();
        interstitial.LoadAd(request);

        // Subscribe to the ad events.
        interstitial.OnAdClosed += HandleAdClosed;
        interstitial.OnAdFailedToLoad += HandleAdFailedToLoad;

        // Register scene change event listener.
        SceneManager.sceneLoaded += OnSceneLoaded;
    }

    void OnDestroy()
    {
        // Unsubscribe from the ad events.
        interstitial.OnAdClosed -= HandleAdClosed;
        interstitial.OnAdFailedToLoad -= HandleAdFailedToLoad;

        // Unregister scene change event listener.
        SceneManager.sceneLoaded -= OnSceneLoaded;
    }

    void OnSceneLoaded(Scene scene, LoadSceneMode mode)
    {
        // Show the interstitial ad when a new scene is loaded.
        ShowInterstitialAd();
    }

    public void ShowInterstitialAd()
    {
        // Check if the interstitial ad is loaded.
        if (interstitial != null && interstitial.IsLoaded())
        {
            // Show the interstitial ad.
            interstitial.Show();
        }
        else
        {
            Debug.Log("Interstitial ad is not loaded yet.");
        }
    }

    void HandleAdClosed(object sender, EventArgs args)
    {
        // Load a new interstitial ad after the previous one is closed.
        AdRequest request = new AdRequest.Builder().Build();
        interstitial.LoadAd(request);
    }

    void HandleAdFailedToLoad(object sender, AdFailedToLoadEventArgs args)
    {
        // Handle the event when the interstitial ad fails to load.
        Debug.Log("Interstitial ad failed to load: " + args.Message);
    }
}

With this updated script, the OnSceneLoaded function is registered as an event listener using SceneManager.sceneLoaded. Whenever a new scene is loaded, the OnSceneLoaded function is triggered, and the ShowInterstitialAd method is called to display the interstitial ad.

Make sure to attach the AdManager script to an empty GameObject in each scene where you want to show the