Ethereum Unity3D Boilerplate Questions

Shivam · September 4, 2022, 2:05am

In which directive/namespace is the RunContractFunction ? Because I can’t use it or can’t read the method. I am using Web3 Game Kit Package v1.2.7 and Unity 2021.3.5 .

alex · September 4, 2022, 2:14am

You can see a full example here (Unity tab).

Newbiedev · September 6, 2022, 9:54am

Please help.

IndeepParth · September 20, 2022, 5:04am

Hi @dgoodrich & @0xprof,
We are making WebGL game with Moralis and Metamask using Unity. Everything working fine from login to call contract function.

But we want auto-login Metamask(without popup) if the user reopens the tab or refreshes Tab once the user login with Metamask. It is possible with WebGL Moralis 1.2.10?

thanks

Hero909 · October 14, 2022, 4:49pm

Hi guys,
is there a way to authenticate 2 users on one Unity instance ?
I would like to have two qr codes popin on split screen… is it doable ?
Thanks!

WoodsFiend · November 16, 2022, 5:32pm

This might be possible if you duplicate all the components, though you may run into issues with socket connections from wallet connect.

WoodsFiend · November 16, 2022, 5:34pm

I was wondering if anyone knows of a Unity implementation for Unstoppable domains? We have been able to integrate web3auth using their SDK, but Unstoppable doesn’t seem to have a Unity SDK.

alex · November 16, 2022, 7:51pm

How do you want to implement Unstoppable Domains?

WoodsFiend · November 16, 2022, 7:55pm

Initially we would like to have Unstoppable as an authentication method. Currently we use the built-in wallet connect and our own integration with web3auth.

alex · November 16, 2022, 8:24pm

It can maybe done directly if they have an API. Would be best to contact them if they offer a solution.

WoodsFiend · November 16, 2022, 8:27pm

I am in contact and waiting for response. I thought someone might have already tackled the implementation and have a solution or general steps.

On a side-note if anyone needs guidance on web3auth implementation with Moralis Unity let me know and I can provide assistance

alex · November 16, 2022, 8:30pm

If you could make a new topic on using the Web3Auth SDK, that would be great. Some other users have asked about that.

davecotefilm · December 15, 2022, 7:08am

I’m having problems with the self hosted parse server. I’ve installed the following onto my server as follows via ssh:

yarn add parse-server --ignore-engines
yarn dev:db-start
yarn start
cd /var/www/html/DnA/parse-server-migration
yarn build
yarn start
yarn dev:db-start
wget -qO - https://www.mongodb.org/static/pgp/server-6.0.asc | sudo apt-key add -
echo "deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu focal/mongodb-org/6.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-6.0.list
sudo apt-get update
sudo apt-get install -y mongodb-org
sudo systemctl start mongod
yarn add parse-dashboard --ignore-engines
yarn add moralis --ignore-engines

Then When I start this happens:

yarn start -- --appId *********************************** --masterKey ************************************ --serverURL https://127.0.0.1:1337/server

yarn run v1.22.19
warning From Yarn 1.0 onwards, scripts don't require "--" for options to be forwarded. In a future version, any explicit "--" will be forwarded as-is to the scripts.
$ node build/index.js --appId pRLSWTZ8RUMngGVmgWmI8IzaUXFgUsX8Z1wZ6leJ --masterKey iDIgWXWAXK49KOIuKexjmwQzofjYyUeEj33s72K5we7GpNCDeUKNakNfCbgkDEqO --serverURL https://127.0.0.1:1337/server
bigint: Failed to load bindings, pure JS will be used (try npm run rebuild?)
warn: DeprecationWarning: The Parse Server option 'directAccess' default will change to 'true' in a future version. Additionally, the environment variable 'PARSE_SERVER_ENABLE_EXPERIMENTAL_DIRECT_ACCESS' will be deprecated and renamed to 'PARSE_SERVER_DIRECT_ACCESS' in a future version; it is currently possible to use either one.
warn: DeprecationWarning: The Parse Server option 'enforcePrivateUsers' default will change to 'true' in a future version.
warn: DeprecationWarning: The Parse Server option 'allowClientClassCreation' default will change to 'false' in a future version.
info: Parse LiveQuery Server started running
Moralis Server is running on port 1337 and stream webhook url https://d59f-167-71-97-138.ngrok.io/streams-webhook
MongoServerSelectionError: connect ECONNREFUSED 127.0.0.1:27017
    at Timeout._onTimeout (/var/www/html/DnA/parse-server-migration/node_modules/mongodb/lib/sdam/topology.js:291:38)
    at listOnTimeout (node:internal/timers:564:17)
    at process.processTimers (node:internal/timers:507:7) {
  reason: TopologyDescription {
    type: 'Unknown',
    servers: Map(1) { 'localhost:27017' => [ServerDescription] },
    stale: false,
    compatible: true,
    heartbeatFrequencyMS: 10000,
    localThresholdMS: 15,
    setName: null,
    maxElectionId: null,
    maxSetVersion: null,
    commonWireVersion: 0,
    logicalSessionTimeoutMinutes: null
  },
  code: undefined,
  [Symbol(errorLabels)]: Set(0) {}
}
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

My Unity code that I’m running with MoralisWeb3ApiSdk (the old-school one yes), AppManager.cs contains only the slight changes you guys said to make:

 public async void WalletConnectHandler(WCSessionData data)
    {
        Debug.Log("Wallet connection received");
        // Extract wallet address from the Wallet Connect Session data object.
        address = data.accounts[0].ToLower();
        string appId = MoralisInterface.GetClient().ApplicationId;
        long serverTime = 0;

        // Retrieve server time from Moralis Server for message signature
        Dictionary<string, object> serverTimeResponse = await MoralisInterface.GetClient().Cloud.RunAsync<Dictionary<string, object>>("getServerTime", new Dictionary<string, object>());

        //if (serverTimeResponse == null || !serverTimeResponse.ContainsKey("dateTime") ||
        //    !long.TryParse(serverTimeResponse["dateTime"].ToString(), out serverTime))
        //{
        //    Debug.Log("Failed to retrieve server time from Moralis Server!");
        //}

if (serverTimeResponse != null)
{
    Debug.LogError("Failed to retrieve server time from Moralis Server!");
}



        if (!MoralisInterface.IsLoggedIn())
        {
            Debug.Log($"Sending sign request for {address} ...");


IDictionary<string, object> requestMessageParams = new Dictionary<string, object>();

requestMessageParams.Add("address", address);
requestMessageParams.Add("chain", "Eth");
requestMessageParams.Add("network", "evm");

Dictionary<string, object> authMessage = await MoralisInterface.GetClient().Cloud.RunAsync<Dictionary<string, object>>("requestMessage", requestMessageParams);

string signMessage = authMessage["message"].ToString();


            //string signMessage = $"Moralis Authentication\n\nId: {appId}:{serverTime}";
            string response = await walletConnect.Session.EthPersonalSign(address, signMessage);
        
            Debug.Log(response);

            Debug.Log($"Signature {response} for {address} was returned.");

            // Create moralis auth data from message signing response.
            Dictionary<string, object> authData = new Dictionary<string, object> { { "id", address }, { "signature", response }, { "data", signMessage } }; 

            Debug.Log("Logging in user.");

            // Attempt to login user.
            var user = await MoralisInterface.LogInAsync(authData);

            if (user != null)
            {
                Debug.Log($"{address} logged in successfully. ");
                infoLabel.text = $"{address}\nlogged in successfully!";
            }
            else
            {
                Debug.Log("User login failed.");
                infoLabel.text = "Login failed";
            }
        }

        UserLoggedInHandler();
    }

    public void WalletConnectSessionEstablished(WalletConnectUnitySession session)
    {
        InitializeWeb3();
    }
    
    private void InitializeWeb3()
    {
        MoralisInterface.SetupWeb3();
    }
    
    #endregion

Even with those above changes I don’t see how the null value is dealt with but hopefully you can enlighten me.

And I’ll include Screenshots of the WebGL running online, dev build along with errors:

Now, I’m REALLY hoping someone can help me, as I’ve really put A LOT of time into this, and the way the Crypto world is going, I’m about ready to jump out a window (or just drop everything and opt for Facebook/Meta login for everything

) But yeah seriously, PLEASE HELP!!!
I am able to scan the QR, my wallet sees and signs it (metamask), the browser recognizes this and says “Please Sign…” so it’s NEARLY THERE!!! But then, crash, Cross-Origin blah blah Error…
Dave Cote

alex · December 15, 2022, 10:00pm

Does your Unity project (with WebGL) work with your self-hosted server locally?

davecotefilm · December 15, 2022, 10:52pm

I don’t know, my local machine is windows, I’m running it on my server, which is Ubuntu 20.04. It ran fine on moralis server before they retired them. Seeing it run locally on windows wouldn’t tell me much would it?

davecotefilm · December 15, 2022, 10:55pm

Basically it seems to start the sign in, then when getting a signature returned it complains about Cors Cross-Origin error and Key not found exception. What does that mean? Do I need my moralis key in some files on the server?

alex · December 15, 2022, 11:05pm

It’s to make sure there’s no immediate issues with your code and how you patched it to work with self-hosted servers. Then we can work from there instead of making assumptions.

davecotefilm · December 15, 2022, 11:18pm

Okay, but I posted all code, server commands and errors. Does anything stand out?

alex · December 15, 2022, 11:26pm

Could be a configuration issue with your server. You are also getting Mongo errors that don’t seem related to the use of Unity.

Please test first with your self-hosted server as normal.

davecotefilm · December 16, 2022, 5:26am

PLEASE HELP! I can’t run it on my local PC at home, as it’s a COMPLETELY different setup from the Server I run my site on. I’ve only EVER run it on my server, NEVER on my home PC.
So, assume my server IS local, because I’m running terminal commands on it, installing everything on it. It IS my local machine.

I actually can’t test as per the “normal” instructions you give, as I’m on an older version (I’ve been developing from the start), I’m using MoralisWeb3ApiSdk and don’t know exactly how to transfer everything (unless there’s a legacy tutorial I’m missing).

So, server side, here’s what I’m getting in dev browser:

Setup default wallet MetaMask
build.framework.js:3454:11
Closing Websocket
build.framework.js:3454:11
[WebSocket] Queued 0 subscriptions
build.framework.js:3454:11
[WebSocket] Flushing Queue
build.framework.js:3454:11
[WebSocket] Queue Count: 0
build.framework.js:3454:11
[WebSocket] Queue Flushed
build.framework.js:3454:11
[WebSocket] Opened wss://k.bridge.walletconnect.org
build.framework.js:3454:11
[WebSocket] Open Completed
build.framework.js:3454:11
[WebSocket] Subscribe to 00711fc7-6943-495a-9e95-59b952a2dd93
[WalletConnect] Session Connected
build.framework.js:3454:11
Wallet connection received
build.framework.js:3454:11
Adding Header: Content-Type value: application/json
build.framework.js:3454:11
Adding Header: X-Parse-Installation-Id value: 89268d3a-00c0-4c9f-a690-5d84e89ded7f
build.framework.js:3454:11
Adding Header: X-Parse-Application-Id value: pRLSWTZ8RUMngGVmgWmI8IzaUXFgUsX8Z1wZ6leJ

Everything looks nice until this comes next:

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://localhost:1337/server/functions/getServerTime. (Reason: CORS request did not succeed). Status code: (null).

Error: Unknown Error
build.framework.js:3447:11
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Error Getting Wallet Info: Unknown Error

So:
Why is CORS failing? The Wallet connection succeeds but then CORS problem and:

KeyNotFoundException: The given key was not present in the dictionary.```

What does THAT mean? What key? the Moralis secret key? App id? Cli key? some key not in the moralis web dashboard?  I'm stuck..