v0 source realm
Package rpsoracle is a rock-paper-scissors opponent that doesn't roll dice: it studies each player's move history and...
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Rock-Paper-Scissors Oracle
⚠️ 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
A rock-paper-scissors opponent that doesn't roll dice — it studies you. The
oracle tallies every move you've ever thrown and always counters whichever
one you favor most, so a fixed habit gets punished while a genuinely mixed
(roughly 1/3-1/3-1/3) strategy is unbeatable in the long run. It's a live,
playable demo of the rock-paper-scissors mixed-strategy Nash equilibrium:
Render shows your win/loss/draw record, your move-history breakdown, and a
"predictability score" (your most-played move's share of your rounds — lower
means the oracle has less to work with).
Realm path: gno.land/r/g12cs4cehujpffpjpywmkqj43m6u5ya53nj69sjz/rpsoracle
Example calls
1# Play one round — the oracle predicts from your move history, then counters
2gnokey maketx call \
3 -pkgpath "gno.land/r/g12cs4cehujpffpjpywmkqj43m6u5ya53nj69sjz/rpsoracle" \
4 -func Play -args "rock" \
5 -gas-fee 1000000ugnot -gas-wanted 2000000 -broadcast -chainid sapphire-1 <key>
6
7# View the oracle's dashboard (total rounds, oracle win rate, top outwitter)
8gnokey query vm/qrender \
9 --data "gno.land/r/g12cs4cehujpffpjpywmkqj43m6u5ya53nj69sjz/rpsoracle:"
10
11# View one player's record and move-history breakdown
12gnokey query vm/qrender \
13 --data "gno.land/r/g12cs4cehujpffpjpywmkqj43m6u5ya53nj69sjz/rpsoracle:g1youraddress..."
Toolchain
Written against the sapphire (gno 0.9) stdlib split (chain, chain/runtime,
gno.land/p/nt/avl/v0, gno.land/p/nt/testutils/v0), following the same
crossing-function (cur realm) and avl.Tree-backed state patterns already
verified on this chain by the rpsmatch realm in this repo. The gno binary
on PATH here has its compiled-in GNOROOT pointing at a now-deleted
directory (/private/tmp/gnoswap-review/gno), and no Go toolchain is
available in this environment to rebuild a chain-matched binary per
references/toolchain.md, so gno test could not be run this time. The code
was instead reviewed by hand against the exact working patterns in
rpsmatch (same imports, same cur.IsCurrent() / cur.Previous().Address()
guard, same avl.Tree get-or-create, same chain.Emit call shape) and
against Go's array-indexing-by-named-integer-type rule for the Move-keyed
Counts array.
Part of 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.
Package rpsoracle is a rock-paper-scissors opponent that doesn't roll dice: it studies each player's move history and always throws the counter to whichever move that player has favored most. Play a fixed pattern and the oracle punishes it; play close to a uniform 1/3-1/3-1/3 mix and it can't out-guess you better than chance.
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func Play
crossing ActionPlay pits the caller against the oracle: it predicts your next move from your own move history and throws the counter. Accepts "rock"/"paper"/"scissors" or the single-letter shorthand "r"/"p"/"s".
func Render
Render shows the oracle's dashboard at "", or one player's record when path is their bech32 address.
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- chain stdlib
- chain/runtime stdlib
- gno.land/p/nt/avl/v0 package
- strconv stdlib
- strings stdlib
