unity5.2以前で使えるUnityAdsのhelperクラス

UnityAdsHelper.cs

using UnityEngine;
using UnityEngine.Advertisements;
using System.Collections;

public class UnityAdsHelper : MonoBehaviour {

	#region SerializeField

	/// <summary>
	/// The android game identifier.
	/// </summary>
	[SerializeField]
	private string androidGameId;

	/// <summary>
	/// The ios game identifier.
	/// </summary>
	[SerializeField]
	private string iosGameId;

	/// <summary>
	///  Debug mode flag.
	/// </summary>
	[SerializeField]
	private bool isDebugMode;

	/// <summary>
	/// 広告表示
	/// </summary>
	[SerializeField]
	private int showAdInterval;

	#endregion

	#region privateField

	/// <summary>
	/// 広告表示回数カウンター
	/// </summary>
	private int showAdCount;

	#endregion

	// Use this for initialization
	void Awake() {	
		string gameId = "";

		#if UNITY_IOS
		gameid = iosGameId;
		#elif UNITY_ANDROID
		gameId = androidGameId;
		#endif

		Advertisement.UnityDeveloperInternalTestMode = isDebugMode;

		if(string.IsNullOrEmpty(gameId)) {
			Debug.Log("gameid is null or empty");
			return;
		}
		if (Advertisement.isSupported) {
			Advertisement.Initialize (gameId);
		} else {
			Debug.Log("Platform not supported");
		}

		showAdCount = showAdInterval - 1;
	}

	/// <summary>
	/// Determines whether this instance can show ads.
	/// 表示準備が出来ていたら、3回に1回表示する
	/// </summary>
	/// <returns><c>true</c> if this instance can show ads; otherwise, <c>false</c>.</returns>
	public bool CanShowAds(){
		if (!Advertisement.IsReady ())return false;
		showAdCount++;
		if(showAdCount >= showAdInterval){
			showAdCount = 0;
			return true;
		}else{
			return false;
		}
	}

	public void ShowAdvertisementAndEarn(System.Action callback = null){
		Advertisement.Show(null, new ShowOptions {
			resultCallback = result => {
				switch(result){
				case ShowResult.Finished:
					//例: コイン付与処理
					PlayerState.Instance.Coin.Value += 20;
					break;
				}
				if(callback != null) callback();
			}
		});
	}
}