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week07

README.md

Rock, Paper, Scissors on PAB (Cardano Testnet)

Assuming


  • T1 - cardano-node running and in sync.
  • T2 - chain-index running and in sync.
  • T3 - cardano-wallet (1) running on port 8090 (default)
  • T4 - cardano-wallet (2) running on port 8092 (add --port 8092 to cardano-wallet serve)

Running the game


You'll need 9 terminals (T0 .. T8)

  • T0 - run scripts + run the game
  • T1 - cardano-node
  • T2 - chain-index
  • T3 - cardano-wallet-1
  • T4 - cardano-wallet-2
  • T5 - pab-1
  • T6 - pab-2
  • T7 - monitor-1
  • T8 - monitor-2

  1. T0 - ./create-wallet.sh w1 <passphrase_1> testnet/restore-wallet-1.json

  2. T0 - ./load-wallet.sh testnet/restore-wallet-1.json 8090

  3. T0 - Take id ... "id":"<wid1>" ... from previous load-wallet terminal result.

  4. T0 - ./get-address.sh <wid1> 8090

  5. T0 - Pick one from previous get-address terminal result: <address_1>

  6. Modify ADDRESS1 value in env.sh: export ADDRESS1=<address_1>

  7. Modify WALLETID1 value in env.sh: export export WALLETID1=<wid1>

  8. T0 - Source env.sh: . env.sh

  9. Fund address_1 (faucet for example)

  10. T3 - Wait for cardano-wallet-1 getting synced ("In sync!")


  1. T0 - ./create-wallet.sh w2 <passphrase_2> testnet/restore-wallet-2.json

  2. T0 - ./load-wallet.sh testnet/restore-wallet-2.json 8092

  3. T0 - Take id ... "id":"<wid2>" ... from previous load-wallet terminal result.

  4. T0 - ./get-address.sh <wid2> 8092

  5. T0 - Pick one from previous get-address terminal result: <address_2>

  6. Modify ADDRESS2 value in env.sh: export ADDRESS1=<address_2>

  7. Modify WALLETID2 value in env.sh: export export WALLETID2=<wid2>

  8. T0 - Source env.sh: . env.sh

  9. Fund address_2 (Yoroi Nightly or using ./send_from_1_to_2.sh )

  10. T4 - Wait for cardano-wallet-2 getting synced ("In sync!")


  1. T5 - ./migrate-pab.sh testnet/pab-config-1.yml

  2. T5 - ./start-testnet-pab.sh testnet/pab-config-1.yml <passphrase_1>


  1. T6 - ./migrate-pab.sh testnet/pab-config-2.yml

  2. T6 - ./start-testnet-pab.sh testnet/pab-config-2.yml <passphrase_2>


  1. T7 - Source env.sh: . env.sh

  2. T7 - Monitor ADDRESS1: ./monitor-1.sh


  1. T8 - Source env.sh: . env.sh

  2. T8 - Monitor ADDRESS1: ./monitor-2.sh


  1. T0 - Play the game: ./game.sh <playDeadlinePOSIXTIME> <revealDeadlinePOSIXTIME> <Choice1> <Choice2> <stake_in_lovelaces> <skipPlayer2> Example: ./game.sh 1647002125000 1647002365000 Paper Paper 5000000 False

Lessons learned


  • In order to mint the threadToken at "initializing time" on PAB/Testnet, the stateMachine needs some help from us. The thing is that if we run runInitialise client (GameDatum bs Nothing) v, firstGame Contract fails with TxOutRefNotFound error. I checked that the utxo obtained from getThreadToken really exists and keeps unspent. However, for some reason, at the time of minting fails because PAB can't find it. Solution: Use runInitialiseWith and add a lookup with the utxo ref. (Please, check codebase). Notice that this lookup is NOT needed when the contract runs on EmulatorTrace.


  • In order to run the contract on PAB/Testnet we need to modify scSlotZeroTime in pab-config-1.yml and pab-config-2.yml. The scSlotZeroTime value in file pab-config.yml (week06) seems not to work when when deadlines comes into play. I found unexpected results, concretely time doesn't match with Testnet time. Solution: Replace scSlotZeroTime as follows:

pscSlotConfig:
    # scSlotZeroTime: 1596059091000 # Wednesday, July 29, 2020 21:44:51 - shelley launch time in milliseconds
    scSlotZeroTime:   1594369216000 #  (timeWhenSlotChangedTo1Sec (1595967616) - slotWhenSlotChangedTo1Sec (1598400)) * 1000
    # Check https://cardano.stackexchange.com/questions/7034/how-to-convert-posixtime-to-slot-number-on-cardano-testnet/7035#7035