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Login Example
This section will illustrate how to build the scenes to login and load a player's NFT assets.
NOTE In order to use the Cronos Network, you will have to add the Network ID and Name in the network.js file in the
Assets/WebGLTemplates/Web3GL-2020x/
folder.To ensure that the NFT loads conditionally after successfully connecting to a wallet, you can update the
ImportNFTTextureCronos.cs
file with the content below.using System.Collections;
using System.Collections.Generic;
using System.Threading.Tasks;
using UnityEngine;
using UnityEngine.Networking;
public class ImportNFTTextureCronos : MonoBehaviour
{
public class Response {
public string image;
}
async void Start()
{
string chain = "cronos";
string network = "mainnet"; // mainnet or testnet
string account = "WALLET_ADDRESS"; // PlayerPrefs.GetString("Account");
string contract = "CONTRACT_ADDRESS";
string tokenId = "TOKEN_ID";
string ownerOf = await ERC721.OwnerOf(chain, network, contract, tokenId);
if (ownerOf == account)
{
// fetch uri from chain
string uri = await ERC721.URI(chain, network, contract, tokenId);
print("uri: " + uri);
// fetch json from uri
UnityWebRequest webRequest = UnityWebRequest.Get(uri);
await webRequest.SendWebRequest();
Response data = JsonUtility.FromJson<Response>(System.Text.Encoding.UTF8.GetString(webRequest.downloadHandler.data));
// parse json to get image uri
string imageUri = data.image;
print("imageUri: " + imageUri);
// fetch image and display in game
UnityWebRequest textureRequest = UnityWebRequestTexture.GetTexture(imageUri);
await textureRequest.SendWebRequest();
this.gameObject.GetComponent<Renderer>().material.mainTexture = ((DownloadHandlerTexture)textureRequest.downloadHandler).texture;
}
}
}
If you are using IPFS please replace IPFS with an HTTPS call as seen below
Replace IPFS
if (uri.StartsWith("ipfs://"))
{
uri = uri.Replace("ipfs://", "https://ipfs.io/ipfs/");
}
To build the Game Login example, you need to go to
File/Build Settings
and select your WebGL, IOS or Androi Build Settings. In this example, we will build using the WebGL method. To build with the DefiWallet option, you will have to select the Cronos DefiWallet Template in the Player -> Resolution and Presentation settingsNOTE Make sure to select the Cronos Defi Wallet Template in the Player -> Resolution and Presentation settings.


On successful completion, you will be able to log in to your DefiConnect wallet. The scene will load any textures from NFT assets you own on successful login.
Last modified 1yr ago