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SDKPlayer ServiceTransactionsCustom token charges

Custom charges of in-game currencies (coming soon)

Another — and probably the most interesting option for most developers - is charging in-game (ERC-20) tokens as a form of payment for transactions. To easily explain the flexibility this gives you, let’s assume you have an in-game token called ‘Gold’. Users obtain Gold either through playing your game, or by making an in-app purchase, and you would like to charge users their Gold when you handle a transaction for them.

Creating a custom charge policy

You could charge your users an X amount of Gold by simply creating a policy and providing the policyId in any transaction. When this happens, the in-game Gold will be taken away from the user, while under the hood we use BEAM to run a transaction.

Economic viability

Eventually, you as a game developer will be responsible for funding the BEAM for all the transactions that are ran through our service, so if you take away in-game Gold, you have to consider if it is economically viable to make this transaction. Let’s assume a single transaction on Beam costs < 0.001 BEAM, and a single Gold (coin) costs the user $0.05 to obtain - this means that the transaction through the policy is not only economically viable but it also allows you to to sponsor quite a few transactions for the user as the single Gold paid for the transaction tenfold.

const transaction = await beam.assetsV2.transferAssetV2("sending-user-entity-id", {
  assets: [
    receiverEntityId: "receiving-user-entity-id",
    assetAddress: "your-contract-address",
    assetId: "73",
    amountToTransfer: 1,
  ]
  // ...
  sponsor: false, // 👈 This handles the transaction to be self paid
  policyId: "cl..", // 👈 This triggers the custom policy to be used
});
 
// {
//   "status": "success",
//   "type": "custodial",
//   "transactionHash": '0x71f3f259568e9875c41a4350a3912a3a7650d9321ccd1d57641241128b4e504f',
//   "explorerUrl": "https://subnets.avax.network/beam/0x71f3f259568e9875c41a4350a3912a3a7650d9321ccd1d57641241128b4e504f"
// }

Alternative methods of handling transactions

Profile paid transactionsCustom transactions