Native call backs & Monetization of Unity 3d Games for windows phone 8 platform (Ads and IAP integration)

Monetization: Unity 3D Games for windows phone 8/8.1 platform

As per the unity we can handle the call back using the following techniques as bellow :

1) Writing the custom DLLs (build and run)

2) Event Registration mechanism for unity 3d games.

In this post I would tell you how to handle the event registration and call back handling for native calls. Unity has an option to select the whether you want a C# or C++ project to be generate. In my case i will consider the C#  Xaml project with silverlight runtime.

1) Create a  class which should be always in screen ( keep the DontDestroyOnLoad method in Awake or Start functions)

2) Write the events and register that events in generated code

Ex: see this bellow sample code

public class WINRTInterfaceHandler : MonoBehaviour
{

public delegate void ReceivedCallBack(int miRequestId, string strRequestedData, string result);
public ReceivedCallBack OnCallBack;
string msPrevRequestedData;
int miPrevRequestedId;


public event Action<int,string> SendRequestEvent; //Event for handling the call backs
private bool isCreated =false;

static WINRTInterfaceHandler mInstance = null;

GameObject obj = new GameObject();
public static WINRTInterfaceHandler Instance
     {
 get{
 if(mInstance == null)
 {

}
obj.name = "WINRTInterfaceHandler";
            DontDestroyOnLoad(obj);
            mInstance = obj.AddComponent();

DontDestroyOnLoad(this.gameObject); //make sure dont delete at all
return mInstance;
 }
 }
void Awake()
{
 if(!isCreated)
 {
 isCreated = true;
 }
 else
 Destroy(this.gameObject);
}

miPrevRequestedId= requestId;
public bool SendRequest(int requestId,string requestedData,ReceivedCallBack requestCallback)
{
 if(requestCallback!= null)
 {
 msPrevRequestedData= requestedData;
 OnCallBack = requestCallback;
 }


public void SendResponse(string msReuestStatus) //which is directly called by the native code
//depends on request id send the request to native code
 if(SendRequestEvent != null)
 {
 SendRequestEvent(reqType,strData);
 }

} 

{
 if (OnCallBack == null) //if no call back required then just return
 return;
 else


ReceivedCallBack temp = OnCallBack;
 OnCallBack = null;
 temp (miPrevRequestedId, msPrevRequestedData, msReuestStatus);
}


}//Class end

Any place in the game code if you can call the any request as follows it will process Syntax:

//If you consider the enums for request id would be nice</pre>
//syntax:

WINRTInterfaceHandler.Instance.SendRequest (int id, string sdata, Callback function);

For displaying the ads there in no need to have the call back methods as if want to get the call back pass the call back function as third argument

WINRTInterfaceHandler.Instance.SendRequest (1, "1", OnRecievdCallBack);

WINRTInterfaceHandler.Instance.SendRequest (2, "2", OnRecievdCallBack); 

void OnRecievdCallBack(int reqId, string strRequestedData, string result)
{
if(result=="true")
{
switch(reqId)
{
case 1:
switch(strRequestedData)
{

//Give the coins or reward to the user by setting the playerprefs probably
case "1":
break;
case "2":
break;
}
break;
case 2:
switch(strRequestedData)
{

//Purchase failed don't give any coins and rewards
case "1":
break;
case "2":
break;
}
break;
default:
break;
}
}
else
 {
 }
}

All the setup at unity side is done let's build the unity project for windows phone platform set the master configuration and rebuild the project. To integrate the Admob ,add the latest version of  GoogleAds sdk  for windows phone 8 and unblock it and add to the references. Now let’s open the MainPage.xaml.cs file Import the GoogleAds As follows: using GoogleAds; and add the InterstitialAd, AdView instances in MainPage Class!

public partial class MainPage : PhoneApplicationPage
{

InterstitialAd interstitialAd;
AdView bannerad;


private void Unity_Loaded()
//Check the following function

{

var InterfaceObj = UnityEngine.Object.FindObjectOfType();
//here we have to register the send Request event with function of same type


if (InterfaceObj != null)

private void OnSendRequest(int reqId, string strData)
InterfaceObj.SendRequestEvent += OnSendRequest;    //Event Registration for any action at game side

}

{
Dispatcher.BeginInvoke(async () =>
{
Switch(reqtype)
{
case 1:
case 2:
{

WINRTInterfaceHandler.Instance.Receiver("true");
strData = “someCommonstringID” + strData;
string productId = strData;
if(reqtype == 1)
{
try
{
var licence = Store.CurrentApp.LicenseInformation.ProductLicenses[productId];
if (licence.IsActive)
{

if (mproductLicense.IsConsumable && mproductLicense.IsActive)
Store.CurrentApp.ReportProductFulfillment(productId);
}
else
{
await Store.CurrentApp.RequestProductPurchaseAsync(productId, false);

var mproductLicense = Store.CurrentApp.LicenseInformation.ProductLicenses[productId];

{

WINRTInterfaceHandler.Instance.Receiver("false");
WINRTInterfaceHandler.Instance.Receiver("true");
Store.CurrentApp.ReportProductFulfillment(mproductLicense.ProductId);
}
else if (!mproductLicense.IsConsumable && mproductLicense.IsActive)
{
WINRTInterfaceHandler.Instance.Receiver("true");
}
else
{
}
}

}
catch{ }

var licence = Store.CurrentApp.LicenseInformation.ProductLicenses[productId];
}//consumable goods
else if (reqtype == 2)
{
try
{
if (Store.CurrentApp.LicenseInformation.ProductLicenses[productId].IsActive)
{
WINRTInterfaceHandler.Instance.Receiver("true");
}
else
{
await Store.CurrentApp.RequestProductPurchaseAsync(productId, false);
if (licence.IsActive)
{

if (bannerad != null && DrawingSurfaceBackground.Children.Contains(bannerad))
//report product fulfillment is only for consumable items only
WINRTInterfaceHandler.Instance.Receiver("true");
}
else
WINRTInterfaceHandler.Instance.Receiver("false");
}

}
catch
{

}
}//Durable goods
}
Break;
case 3: //Show banner top
case 4: //Show banner bottom
{
try
{
{

DrawingSurfaceBackground.Children.Add(bannerad);
bannerad.VerticalAlignment = VerticalAlignment.Top; //make it bottom for bottom ads
bannerad.Visibility = Visibility.Visible;
}
else
{
bannerad = new AdView();
bannerad.Format = AdFormats.Banner;
bannerad.VerticalAlignment = VerticalAlignment.Top; //make it bottom for bottom ads
bannerad.AdUnitID = Admob_Banner_Id;
AdRequest adrequest = new AdRequest();

if (bannerad != null && DrawingSurfaceBackground.Children.Contains(bannerad))
bannerad.LoadAd(adrequest);
}
}
}
catch
{
}
}
break;
case 5: //Show fullscreen
{
try
{
interstitialAd = new InterstitialAd(Admob_Intenstial_Id);
AdRequest adRequest = new AdRequest();
interstitialAd.ReceivedAd += OnAdReceived;
interstitialAd.LoadAd(adRequest);
}
catch
{
}
}
break;
case 6: //Hide banner top
{
{
bannerad.Visibility = Visibility.Collapsed;
}
}
break;
}


private void OnAdReceived(object sender, AdEventArgs e)
{
interstitialAd.ShowAd();

}

Thanks