AEF81EA58FF850…03177A13629A

Arguments · 9

1. #1trivia
2. #2README.md
3. #3# Trivia Quiz > ⚠️ **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) --- A rotating on-chain multiple-choice trivia quiz. One question is live at a time; anyone can submit a choice via `Answer`. The first correct answer scores a point on the lifetime leaderboard and the quiz immediately advances to the next question. The starting question is picked deterministically from the deploy-time block height, so repeated deploys don't always open on question one. Realm path: `gno.land/r/g12cs4cehujpffpjpywmkqj43m6u5ya53nj69sjz/trivia` ## Example calls ``` # answer the live question (choice index 0-3, shown in Render) gnokey maketx call -pkgpath gno.land/r/g12cs4cehujpffpjpywmkqj43m6u5ya53nj69sjz/trivia \ -func Answer -args 2 -gas-fee 1000000ugnot -gas-wanted 2000000 -broadcast -chainid sapphire-1 <key> ``` View `Render("")` (or just the realm path in gnoweb) to see the current question, its lettered choices, the leaderboard, and the total number of questions answered correctly so far. ## Toolchain status `gno test .` passes locally against a `gnolang/gno` checkout (`GNOROOT` set explicitly — the default env had a stale `GNOROOT` from an unrelated checkout). Local `gno` is `master.3130+bf5b31eda`, newer than sapphire (gno 0.9); code sticks to the documented sapphire-safe surface (`chain`, `chain/runtime`, crossing functions with `cur realm`, `gno.land/p/nt/avl/v0`) per the `gno` skill's stdlib reference. <!-- 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 -->
4. #4gnomod.toml
5. #5module = "gno.land/r/moul/x/daily/trivia/v0" gno = "0.9"
6. #6trivia.gno
7. #7// Package trivia is a rotating multiple-choice trivia quiz realm. // // One question is live at a time. Anyone can call Answer with a choice // index; the first caller to answer correctly scores a point and the quiz // advances to the next question. The starting question is picked // deterministically from the block height at deploy time so repeated // deploys don't always open on question one. package trivia import ( "strconv" "strings" "chain" "chain/runtime" "gno.land/p/nt/avl/v0" ) // question is one fixed trivia entry. type question struct { text string choices [4]string correctIdx int } // round holds the mutable state of the currently open question. type round struct { number int // 1-based round counter, increments forever qIdx int // index into questions for this round attempts int // guesses made against this round so far solved bool winner string } var ( questions = []question{ {"What is the smallest prime number?", [4]string{"0", "1", "2", "3"}, 2}, {"Which gas does a plant primarily absorb for photosynthesis?", [4]string{"Oxygen", "Nitrogen", "Carbon dioxide", "Hydrogen"}, 2}, {"How many continents are there on Earth?", [4]string{"5", "6", "7", "8"}, 2}, {"In binary, what is 1 + 1?", [4]string{"2", "10", "11", "0"}, 1}, {"What does 'HTTP' stand for?", [4]string{"HyperText Transfer Protocol", "High Transfer Text Protocol", "Home Tool Transfer Protocol", "HyperText Transmission Path"}, 0}, {"Which planet is known as the Red Planet?", [4]string{"Venus", "Jupiter", "Mars", "Saturn"}, 2}, {"What is the time complexity of binary search?", [4]string{"O(n)", "O(log n)", "O(n^2)", "O(1)"}, 1}, {"Who wrote the original Go proverb 'Don't communicate by sharing memory'?", [4]string{"Linus Torvalds", "Rob Pike", "Guido van Rossum", "Brendan Eich"}, 1}, } current *round scores = avl.NewTree() // addr(string) -> *int, points across all rounds totalCorrect int // lifetime count of correctly-answered questions ) func init() { current = newRound(1, runtime.ChainHeight()) } // newRound builds a fresh round. The question index cycles through the fixed // list, offset by a height-derived starting point so consecutive deploys // don't all open on the same question. func newRound(number int, height int64) *round { return &round{ number: number, qIdx: questionIndex(number, height), } } // questionIndex maps a round number and a height (entropy source for the // starting offset) to a slot in the questions slice. Deterministic and pure // so it's easy to unit test. func questionIndex(number int, height int64) int { if height < 0 { height = -height } n := len(questions) offset := int(height % int64(n)) return (offset + number - 1) % n } // Answer submits a choice (0..3) for the current question. Crossing // function: caller invokes as Answer(cross(cur), choiceIdx). func Answer(cur realm, choiceIdx int) string { if !cur.IsCurrent() { panic("spoofed realm") } q := questions[current.qIdx] if choiceIdx < 0 || choiceIdx >= len(q.choices) { panic("choice must be in 0.." + strconv.Itoa(len(q.choices)-1)) } if current.solved { panic("this question is already solved; the next one is already live") } current.attempts++ caller := cur.Previous().Address().String() if choiceIdx != q.correctIdx { return "Wrong — try again." } current.solved = true current.winner = caller addScore(caller) totalCorrect++ chain.Emit("QuestionSolved", "round", strconv.Itoa(current.number), "winner", caller, "answer", q.choices[choiceIdx], ) solvedRound := current.number current = newRound(solvedRound+1, runtime.ChainHeight()) return "Correct! The answer was \"" + q.choices[choiceIdx] + "\". A new question is now live." } // addScore bumps addr's lifetime point count. func addScore(addr string) { if v := scores.Get(addr); v != nil { p := v.(*int) *p++ return } one := 1 scores.Set(addr, &one) } func scoreOf(addr string) int { if v := scores.Get(addr); v != nil { return *(v.(*int)) } return 0 } // leaderboardEntry is a snapshot row used only for rendering, sorted by // score descending. type leaderboardEntry struct { addr string score int } func leaderboard() []leaderboardEntry { var rows []leaderboardEntry scores.Iterate("", "", func(addr string, v any) bool { rows = append(rows, leaderboardEntry{addr: addr, score: *(v.(*int))}) return false }) // simple insertion sort by score desc; leaderboards here stay small. for i := 1; i < len(rows); i++ { j := i for j > 0 && rows[j-1].score < rows[j].score { rows[j-1], rows[j] = rows[j], rows[j-1] j-- } } return rows } // Render produces the gnoweb Markdown view of the quiz. func Render(path string) string { var b strings.Builder b.WriteString("# Trivia Quiz\n\n") b.WriteString("A rotating on-chain trivia quiz. Call `Answer(choiceIdx)` with 0-3 ") b.WriteString("to answer the current question — first correct answer scores the point ") b.WriteString("and a new question goes live.\n\n") q := questions[current.qIdx] b.WriteString("## Round " + strconv.Itoa(current.number) + "\n\n") b.WriteString("**" + q.text + "**\n\n") letters := [4]string{"A", "B", "C", "D"} for i, c := range q.choices { b.WriteString("- **" + letters[i] + "** (" + strconv.Itoa(i) + "): " + c + "\n") } b.WriteString("\n- Attempts so far this round: " + strconv.Itoa(current.attempts) + "\n\n") b.WriteString("## Leaderboard\n\n") rows := leaderboard() if len(rows) == 0 { b.WriteString("_No one has scored yet — be the first!_\n\n") } else { b.WriteString("| Player | Points |\n|---|---|\n") for _, r := range rows { b.WriteString("| `" + r.addr + "` | " + strconv.Itoa(r.score) + " |\n") } b.WriteString("\n") } b.WriteString("Total questions answered correctly across all rounds: " + strconv.Itoa(totalCorrect) + "\n\n") b.WriteString("## How to play\n\n") b.WriteString("```\n") b.WriteString("gnokey maketx call -pkgpath gno.land/r/g12cs4cehujpffpjpywmkqj43m6u5ya53nj69sjz/trivia \\\n") b.WriteString(" -func Answer -args <0|1|2|3> ...\n") b.WriteString("```\n") return b.String() }
8. #8/gno.MemPackageType
9. #9 MPUserProd