Authentication with Google Play Games

For those who looking to leverage the amazing features of Google Play Games in their Unreal Engine Projects, EIK has you covered.

1. Setup Keystore for Android

For setting up the Google Cloud project, we'll need a keystore in place, so let us set that up first.

1. Run this command
   keytool -genkey -v -keystore key_name.keystore -alias alias_name -keyalg RSA -keysize 2048 -validity 10000
   Then fill in the prompted values and confirm, you should see a similar output as below:
   

2. Copy your keystore file into Project/Build/Android/key_name.keystore

3. Go to Project Settings -> Android (Under Platforms)

4. Click configure

5. Scroll down to Distribution Signing tab.

6. Fill in the keystore details
   

7. Go to Project Settings -> Packaging (Under Project).

8. Under Project, Set Build Configuration to Shipping and Tick For Distribution
   

9. Then, once again, open your Terminal/CMD, cd into Project/Build/Android and run the following command:
   keytool -keystore key_name.keystore -list -v
   Enter the keystore password when prompted

10. You should see a similar output, you need to copy the SHA1 value and store it somewhere safe as we will need it while creating an OAuth Client in Step 2.
    

2. Setup Google Cloud project

1. First, we need to setup a Google Cloud project, so go to your Google Cloud Console and Create a new project (opens in a new tab).

2. Enter an appropriate project name and click Create.

3. Then after the project has been created, click SELECT PROJECT
   

4. On the left panel, select OAuth consent screen, then click Get started
   

5. Fill in all the necessary details about your game, then click Create
   

6. Click Create OAuth client
   

7. Fill in the Package name found in Project Settings -> Android (Under Platforms) -> Android Package Name

8. Fill in the SHA-1 certificate fingerprint as saved in Step 1.
   

9. Click Create at the bottom of the page.

10. Go to Data Access, and click Add or remove scopes
    

11. In the Filter bar, search for Google Play Games Services API and select it. Then, select the THREE scopes shown below:
    

12. Click Update, then click Save

3. Setup Play Console Project

First, we need to setup a Google Play Console project for our game. So open up your console and follow these steps:

1. Click Create app on the Home page
   

2. Make sure you set App or game to Game
   

3. Click Create app

4. After the app is created, on the left tab, go to Grow Users -> Play Games Services -> Setup and management -> Configuration

   

5. Select Create new Play Games Services project. Then choose the Cloud project that we created in Step 2. Then click Use on bottom of the screen

6. Then you should see the steps to Set up Play Games Services as follows:
   

7. Click the second option Create OAuth consent screen in Google Cloud Platform then instantly click Confirm configuration as we've done that in Step 2.

8. Scroll down to Credentials and click Add credential.

9. Make sure the Type is set to Android, then scroll down to Authorization and select the OAuth Client that we created in Step 2.
   

10. Click Save changes

11. Go back to the Configuration page.

12. Ignore the rest of the steps to Set up Play Games Services

13. Click on Edit properties
    

14. If you want to use the Saved Games feature, turn it on, otherwise ignore this step.
    

15. Go back to the configuration page.

16. Copy the Project ID as shown below:
    

17. Go to Project Settings -> EOS Integration Kit (Under Game), and paste it in the Google Play Games App ID
    

You're all set!

Congratulations, you're now all set to use the amazing features provided by Google Play Games Services with the help of EOS Integration Kit!
Now, just build your project for Android and watch it automatically login with Google Play Games Services!

Here are the available nodes for Google Play Games Services with EIK: