Adding ERC1155 Token to Game Discussion

Ethereum Game Programming
#42

Hello @Eleanor_Tay,

Adding some context, where did you deploy the contracts when you tested buying items in the game?
Try adding some alert message just to check where the execution ended up before the error occured:

//buy tokens after game ends
function buy(id) {
  alert("before getAccounts");
  web3.eth.getAccounts().then(accountArray => {
    const options = {
      from: accountArray[0],
      value: 0
    };

    if (id == 1)
      options.value = 100000000000000;
    else if (id == 2)
      options.value = 200000000000000;
    else if (id == 3)
      options.value = 300000000000000;
    
      alert("before buyToken");
    marketplace.methods.buyToken(id).send(options)
      .on("receipt", receipt => {
      alert("Transaction Complete");
  });
  })

With kind regards

#43

Hi @alp257,
When I added in the alerts, I get the ā€œbefore buyTokenā€ alert when I click one of the buy buttons. However, I still receive the same error and am unable to buy the items in metamask.

I have managed to upload my files into Github:
ERC 1155: https://github.com/nortay250/erc1155-implemetation
Frontend: https://github.com/nortay250/pump-your-bag

#44

Hello @Eleanor_Tay

Since, the error message is quite general, letā€™s check the details:

  • You deployed the marketplace contract locally or in the testnet?
  • If via the testnet, did you use enough test eth with your metamask to buy the items?
  • Using truffle, can you check the (ERC-1155) token balance of the marketplace to confirm if the tokens were minted

With kind regards

#45

Hi @alp257
I have developed it in the test net and have been able to mint the 3 different types of tokens.

Screenshot 2022-01-13 at 9.00.57 AM
Screenshot 2022-01-13 at 9.00.57 AM1664Ɨ262 53 KB

1 Like
#46

Hello @Eleanor_Tay,

Thank you for the response. Just double checking, seeing the screenshot above, you are in truffle ā€˜developā€™ mode which means you are using a dev/local blockchain instead of the testnet or it is just to show that you manage to mint the tokens in your dev blockchain and the output is the same in Testnet (ā€˜consoleā€™ mode via Truffle)?

With kind regards

#47

Hi @alp257, how can I tun the same commands that I did in the dev/local blockchain in the Testnet?

#48

Hello @Eleanor_Tay,

With Truffle, you will be using almost the same commands that you are running in your dev blockchain. (i.e. ā€˜migrate --resetā€™ when deploying your contract). Well before that, you have to setup in the network/testnet in you Truffle config file (i.e. ropsten), you need test eth in a web3 wallet (Metamask) for gas fees, etc. Thereā€™s a part in the course Filip demonstrating this process, you can review that.

However, if you intend to use your dev/local blockchain, you have to setup ā€˜Ganacheā€™ in your computer (can be acquired from the same website of Truffle Suite). With ā€˜Ganacheā€™, you will have some dev accounts with test eth there, import an account in your Metamask, use that to interact with the marketplace in your game via local host network (where your local/dev blockchain is running).

Also, when you deploy a contract (ā€˜migrate --resetā€™) via Truffle in your local/dev blockchain the contract address (of your marketplace) will be different every time you initiate/start the dev blockchain. That means, you have to change the market contract address in your eth.js.

Hope the information is useful to you.
With kind regards

#49

Hi @alp257,
When you mentioned that Filip has gone through it in the course, are you referring to this video?
https://academy.moralis.io/lessons/building-migrations-part-4-deploying-testing
Here he is developing it on the dev/local blockchain, similar to my screenshots above but I dont recall him using Ganache? If I were to run it in truffle, would I run it in my frontdev file or on the ERC1155 file, and which command would I use since I cant run ā€œtruffle developā€ as the first command right?

#50

Hello @Eleanor_Tay

The following section after that video is ā€˜Adding ERC1155 Token to Gameā€™ - where the ERC-1155 token will be integrated with the game, this is when the token contract and the marketplace contract gets deployed to the testnet then make some modifications with your frontend code to interact with the contracts.

Yes, in this course, Ganache is not used.

Taking a step back for clarity. How the flow was presented in the course: build/code the marketplace and ERC-1155 contracts first, test them in the local/dev blockchain w/o the frontend, deploy the contracts in testnet, modify the frontend code so that the game can interact with the marketplace.

Hope the information makes it clear to you.
With kind regards

1 Like