feat: rock-paper-scissors

[dckc]

goal:

playground/packages/fun-games$ endo purge --force

playground/packages/fun-games$ endo make src/rock-paper-scissors.js -n rps
Starting Endo daemon...
Object [Alleged: RockPaperScissors] {}

playground/packages/fun-games$ endo mkhost bob bob-agent
Object [Alleged: EndoHost] {}

playground/packages/fun-games$ endo eval 'E(rps).playAgainst(bob)' bob rps

but I get:

CapTP cli exception: (RemoteTypeError(error:captp:Endo#20001)#1)
RemoteTypeError(error:captp:Endo#20001)#1: target has no method "accept", has ["__getInterfaceGuard__","__getMethodNames__","open","receive"]

  at decodeErrorCommon (packages/marshal/src/marshal.js:303:24)
  at decodeErrorFromCapData (packages/marshal/src/marshal.js:331:14)
  at decodeFromCapData (packages/marshal/src/encodeToCapData.js:384:27)
  at fromCapData (packages/marshal/src/marshal.js:393:23)
  at CTP_RETURN (packages/captp/src/captp.js:693:24)
  at dispatch (packages/captp/src/captp.js:772:7)
  at packages/daemon/src/connection.js:36:7

(RemoteTypeError(error:captp:Endo#20001)#1)

[dckc]

simplified design: gameServer.attack(move) => { defend(move) => result }

based on discussion with @kriskowal

playground/packages/fun-games$ endo make src/rock-paper-scissors.js -n p1
Object [Alleged: RockPaperScissors] {}

playground/packages/fun-games$ endo eval "E(p1).attack('rock')" p1 -n p2
Object [Alleged: Defender] {}

playground/packages/fun-games$ endo eval "E(p2).defend('paper')" p2
{ why: 'paper covers rock', winner: 2 }

• [ ] interface names are kinda goofy

added some unit tests too:

$ yarn test
yarn run v1.22.21
$ ava

  ✔ Rock Paper Scissors: 1 game
    ℹ {
        why: 'paper covers rock',
        winner: 2,
      }
  ✔ only 3 choices allowed
  ✔ attacker cannot attack again
  ─

  3 tests passed