# Rock-Paper-Scissors Duel
> ⚠️ **Experimental — generated with no human supervision.** This realm was
> produced automatically by an MCP-driven agent to exercise the gno MCP server
> and tooling, and to generate test content for gno compilers, linters and
> formatters. **Not audited. Not for production.** Full context & folder README:
> [r/moul/x/daily](https://github.com/moul/gno-contracts/blob/main/r/moul/x/daily/README.md)
---
Asynchronous, two-player rock-paper-scissors with a real commit-reveal
handshake: the challenger locks in a move as a sha256 commitment, the
opponent replies in the open (seeing only a hash gives them nothing to go
on), and the challenger reveals last to settle the round. A challenger who
tries to dodge a losing reveal can be forfeited by the opponent once a
50-block reveal window expires — no house move, no single-tx shortcut, just
two players and a fairness primitive.
**Realm path:** `gno.land/r/g12cs4cehujpffpjpywmkqj43m6u5ya53nj69sjz/rpsduel`
## Example calls
```sh
# 1. Compute your commitment off-chain (or via a read-only query)
gnokey query vm/qeval \
--data 'gno.land/r/g12cs4cehujpffpjpywmkqj43m6u5ya53nj69sjz/rpsduel.ComputeCommit("rock", "xyz123")'
# 2. Open a duel against an opponent with that commitment
gnokey maketx call \
-pkgpath "gno.land/r/g12cs4cehujpffpjpywmkqj43m6u5ya53nj69sjz/rpsduel" \
-func Open -args "g1opponentaddr..." -args "<64-char hex commit>" \
-gas-fee 1000000ugnot -gas-wanted 3000000 -broadcast -chainid sapphire-1 <key>
# 3. Opponent replies in the clear
gnokey maketx call \
-pkgpath "gno.land/r/g12cs4cehujpffpjpywmkqj43m6u5ya53nj69sjz/rpsduel" \
-func Accept -args "1" -args "paper" \
-gas-fee 1000000ugnot -gas-wanted 3000000 -broadcast -chainid sapphire-1 <key>
# 4. Challenger reveals to settle it
gnokey maketx call \
-pkgpath "gno.land/r/g12cs4cehujpffpjpywmkqj43m6u5ya53nj69sjz/rpsduel" \
-func Reveal -args "1" -args "rock" -args "xyz123" \
-gas-fee 1000000ugnot -gas-wanted 3000000 -broadcast -chainid sapphire-1 <key>
# View the lobby, a specific duel, or a player's record
gnokey query vm/qrender --data "gno.land/r/g12cs4cehujpffpjpywmkqj43m6u5ya53nj69sjz/rpsduel:"
gnokey query vm/qrender --data "gno.land/r/g12cs4cehujpffpjpywmkqj43m6u5ya53nj69sjz/rpsduel:1"
```
## Toolchain status
Compiled and tested against the `chain/sapphire` (gno 0.9) toolchain tag from
`gnolang/gno` — `gno test .` and `gno lint .` both pass clean.
<!-- BEGIN GNOCONTRACTS FOOTER (generated by `make readmes`; do not edit below) -->
---
Part of **[moul/gno-contracts](https://github.com/moul/gno-contracts)** — moul's versioned gno.land contracts. See the repository for the full catalog, build/test tooling, and usage.
**Dependency graph:**
> 🧪 **Highly experimental — potentially vibe-coded.** Not audited; may break, change, or be removed at any time. Do not use with anything of value. Full disclaimer: [DISCLAIMER](https://github.com/moul/gno-contracts/blob/main/DISCLAIMER.md).
<!-- END GNOCONTRACTS FOOTER -->
Accept(cur interface {.seal func(); Address func() .uverse.address; IsCode func() bool; IsCurrent func() bool; IsEphemeral func() bool; IsUser func() bool; IsUserCall func() bool; IsUserRun func() bool; PkgPath func() string; Previous func() .uverse.realm; String func() string; Sub func(string) .uverse.realm; Subpath func() string}, id string, moveStr string) string
Cancel(cur interface {.seal func(); Address func() .uverse.address; IsCode func() bool; IsCurrent func() bool; IsEphemeral func() bool; IsUser func() bool; IsUserCall func() bool; IsUserRun func() bool; PkgPath func() string; Previous func() .uverse.realm; String func() string; Sub func(string) .uverse.realm; Subpath func() string}, id string) string
ClaimForfeit(cur interface {.seal func(); Address func() .uverse.address; IsCode func() bool; IsCurrent func() bool; IsEphemeral func() bool; IsUser func() bool; IsUserCall func() bool; IsUserRun func() bool; PkgPath func() string; Previous func() .uverse.realm; String func() string; Sub func(string) .uverse.realm; Subpath func() string}, id string) string
ComputeCommit(moveStr string, salt string) string
Open(cur interface {.seal func(); Address func() .uverse.address; IsCode func() bool; IsCurrent func() bool; IsEphemeral func() bool; IsUser func() bool; IsUserCall func() bool; IsUserRun func() bool; PkgPath func() string; Previous func() .uverse.realm; String func() string; Sub func(string) .uverse.realm; Subpath func() string}, opponentAddr string, commitHex string) string
Render(path string) string
Reveal(cur interface {.seal func(); Address func() .uverse.address; IsCode func() bool; IsCurrent func() bool; IsEphemeral func() bool; IsUser func() bool; IsUserCall func() bool; IsUserRun func() bool; PkgPath func() string; Previous func() .uverse.realm; String func() string; Sub func(string) .uverse.realm; Subpath func() string}, id string, moveStr string, salt string) string
Signatures reconstructed verbatim from vm/qfuncs — interface params keep their inline definitions.
vm/qrender output, sanitized (docs/render-security.md) and displayed in an empty-sandbox iframe — scripts, forms and popups cannot run. Links stay inert in-preview; right-click to open.