clement-ux / Setup-Cairo

Poker Stark

A prototype for a 100% on-chain poker game, build for Matchbox hackhaton.

Comment

The objective here was to create a 100% on-chain poker, based on StarkNet.

However, due to the lack of knowledge of the Cairo language, we could not achieve all that was desired by far.

What has been done:

• User can come and sit at the table if there is enough open seat), and have a balance.

• User of the table can confirm they are ready to play.

• When all user seated users are ready to play, they can start the a round.

• When a round is started :

  • First the deck is initialized.
  • Then the distribution of two cards per player start.
  • After that the users can start to bet, using the inside game balance.
  • After this point, the game logic has no been setup, so all next function can happend at the same time.
  • The distribution of the flop, turn river.
  • Choosen the winning hand has not been done.
  • Update the balance of the winner after the calculation of the winner.

• About the encryption of the card, this part has not been done, but could be planned. At the moment, only the get_caller_address() can access to hand using a view, but we know that this is not good way to do it.

• There are a lot of mistake and no-sens in the smart contract, since we are learning cairo for a really short time. But at least thanks to this hackhaton we learn a huge amount of things for this language, which is really new for us.

• This contract has not been deployed to the tesnet for some obvious reasons. So it is not linked to the front-end at the moment.

• At the beginning we planned to use the library built by GeometryDAO, for the generation of the deck of the cards, the encryption of the cards, the reveale of the cards at the end and so on. After being in contact with the team, we first try the library (built in rust). The job done by GeometryDAO team is really amazing, but after some days of thinking of how we can integrate this in our game, we decide to not use it (for the moment). Because our goal was to built a 100% on-chain game, and their solution wasn't compatible with this (for the moment).

Link for front-end

Front-end Poker Stark

Roadmap

• Comming ...

Installation

Install packages, run Devnet for testing (open docker), start testing

  npm install
  starknet-devnet &
  npx hardhat test