Godot AdMob - Interstitial Ads

Assists with implementing full-screen interstitial ads using the InterstitialAdLoader and InterstitialAd classes in Godot 4.x.

Interstitial Ads Workflow

1. Instantiate InterstitialAdLoader: Set up a loader instance.
2. Configure InterstitialAdLoadCallback: Define success (on_ad_loaded) and failure callbacks.
3. Load the Ad: Call interstitial_ad_loader.load() passing the Ad Unit ID, AdRequest, and load callback.
4. Handle Loaded Ad: Save the loaded InterstitialAd instance in success callback.
5. Configure FullScreenContentCallback: Listen to show, click, dismiss, and fail-to-show events.
6. Show the Ad: Call interstitial_ad.show() to display the ad.
7. Crucial: Destroy the Ad: Call interstitial_ad.destroy() inside the dismissed or show failure callback to free native memory.

Code Examples

=== "GDScript"

```gdscript
var interstitial_ad: InterstitialAd
var interstitial_loader := InterstitialAdLoader.new()

func load_interstitial() -> void:
	var ad_unit_id := "ca-app-pub-3940256099942544/1033173712" # Test ID
	var callback := InterstitialAdLoadCallback.new()

	callback.on_ad_loaded = func(ad: InterstitialAd) -> void:
		interstitial_ad = ad
		print("Interstitial loaded. Ready to show.")
		setup_interstitial_callbacks()

	callback.on_ad_failed_to_load = func(error: LoadAdError) -> void:
		print("Interstitial failed to load: ", error.message)

	interstitial_loader.load(ad_unit_id, AdRequest.new(), callback)

func setup_interstitial_callbacks() -> void:
	if not interstitial_ad:
		return
	var callbacks := FullScreenContentCallback.new()
	callbacks.on_ad_showed_full_screen_content = func() -> void:
		print("Interstitial showed.")
	callbacks.on_ad_dismissed_full_screen_content = func() -> void:
		print("Interstitial dismissed.")
		interstitial_ad.destroy()
		interstitial_ad = null
	callbacks.on_ad_failed_to_show_full_screen_content = func(error: AdError) -> void:
		print("Interstitial failed to show: ", error.message)
		interstitial_ad.destroy()
		interstitial_ad = null

	interstitial_ad.full_screen_content_callback = callbacks

func show_interstitial() -> void:
	if interstitial_ad:
		interstitial_ad.show()
	else:
		print("Interstitial not loaded yet.")
```

=== "C#"

```csharp
using Godot;
using PoingStudios.AdMob.Api;
using PoingStudios.AdMob.Api.Listeners;
using PoingStudios.AdMob.Api.Core;

private InterstitialAd _interstitialAd;
private InterstitialAdLoader _interstitialLoader = new InterstitialAdLoader();

public void LoadInterstitial()
{
    string adUnitId = "ca-app-pub-3940256099942544/1033173712"; // Test ID
    var callback = new InterstitialAdLoadCallback();

    callback.OnAdLoaded = (InterstitialAd ad) => {
        _interstitialAd = ad;
        GD.Print("Interstitial loaded. Ready to show.");
        SetupInterstitialCallbacks();
    };
    callback.OnAdFailedToLoad = (error) => {
        GD.Print($"Interstitial failed to load: {error.Message}");
    };

    _interstitialLoader.Load(adUnitId, new AdRequest(), callback);
}

private void SetupInterstitialCallbacks()
{
    if (_interstitialAd == null) return;

    var callbacks = new FullScreenContentCallback();
    callbacks.OnAdShowedFullScreenContent = () => GD.Print("Interstitial showed.");
    callbacks.OnAdDismissedFullScreenContent = () => {
        GD.Print("Interstitial dismissed.");
        _interstitialAd.Destroy();
        _interstitialAd = null;
    };
    callbacks.OnAdFailedToShowFullScreenContent = (error) => {
        GD.Print($"Interstitial failed to show: {error.Message}");
        _interstitialAd.Destroy();
        _interstitialAd = null;
    };

    _interstitialAd.FullScreenContentCallback = callbacks;
}

public void ShowInterstitial()
{
    if (_interstitialAd != null)
    {
        _interstitialAd.Show();
    }
}
```