Lucas WintherandClaude Fable 5.2
edd57f0148
Audit pass: - Frame rule counts frames since the last move, so every step lasts exactly movesEvery(score) frames, also right after a speed-up - clampTime + MAX_GAP_MS: a hidden tab no longer replays the whole gap - Pong Restart keeps held keys - Fact corrections (mulberry32 output coverage, Haskell IO, uniform) - New fixture cases from a mutation analysis Extensions (all three tracks, shared fixtures, course text): - Turn queue (Exercise 10.6), persisted high score (10.7), replay viewer (10.8), play() end-to-end helper (9.5) - Optional State (4.7) and optional Module 7b, stack-safe IO - Module 12, property-based testing with generators, shrinking, invariants and a model-based oracle - Module 13, Conway's Life with a Click event - JS type checking via jsconfig, JSDoc and types.d.ts - Maintainer tools: scripts/mutate.mjs, scripts/typecheck-js.sh, Playwright end-to-end suite (e2e/, scripts/e2e.sh) Docs: docs/contract.md is the canonical contract; specs and build log under docs/superpowers. Verified: JS 728, Scala 689, F# 691 unit tests; stubs and progression M01-M13 and M07b; 176 end-to-end tests on Chromium and WebKit. Co-Authored-By: Claude Fable 5.2 <noreply@anthropic.com>
64 lines
2.6 KiB
Scala
64 lines
2.6 KiB
Scala
package snake
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import java.nio.file.{Files, Paths}
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/** Loads shared fixtures from ../fixtures/<name>.json and decodes them into the course's types. */
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object Fixtures:
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private val dir = Paths.get(sys.props.getOrElse("user.dir", ".")).resolve("..").resolve("fixtures").normalize
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def load(name: String): ujson.Value =
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ujson.read(Files.readString(dir.resolve(s"$name.json")))
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/** The cases array of a fixture. */
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def cases(name: String): Seq[ujson.Value] = load(name)("cases").arr.toSeq
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/** Decode a nullable JSON value into an Option. */
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def opt[A](v: ujson.Value)(f: ujson.Value => A): Option[A] =
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if v.isNull then None else Some(f(v))
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def point(v: ujson.Value): Point = Point(v("x").num.toInt, v("y").num.toInt)
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def direction(v: ujson.Value): Direction = Direction.valueOf(v.str)
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def status(v: ujson.Value): Status = Status.valueOf(v.str)
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def action(v: ujson.Value): Action = v("tag").str match
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case "Tick" => Action.Tick
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case "Turn" => Action.Turn(direction(v("dir")))
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case "TogglePause" => Action.TogglePause
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case "Restart" => Action.Restart
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case "Frame" => Action.Frame
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case other => throw new IllegalArgumentException(s"unknown action tag: $other")
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def gameState(v: ujson.Value): GameState = GameState(
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width = v("width").num.toInt,
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height = v("height").num.toInt,
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snake = v("snake").arr.toList.map(point),
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dir = direction(v("dir")),
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nextDir = direction(v("nextDir")),
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apple = opt(v("apple"))(point),
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seed = v("seed").num.toLong,
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score = v("score").num.toInt,
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status = status(v("status")),
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frame = v("frame").num.toInt,
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queued = opt(v("queued"))(direction)
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)
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def session(v: ujson.Value): Session =
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Session(gameState(v("game")), v("best").num.toInt, v("improved").bool)
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def event(v: ujson.Value): Event = v("tag").str match
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case "Time" => Event.Time(v("t").num.toLong)
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case "KeyDown" => Event.KeyDown(v("key").str)
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case "KeyUp" => Event.KeyUp(v("key").str)
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case "Click" => Event.Click(v("x").num.toInt, v("y").num.toInt)
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case other => throw new IllegalArgumentException(s"unknown event tag: $other")
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def shape(v: ujson.Value): Shape = v("tag").str match
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case "Rect" => Shape.Rect(v("x").num.toInt, v("y").num.toInt, v("w").num.toInt, v("h").num.toInt, v("color").str)
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case "Text" =>
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Shape.Text(v("x").num.toInt, v("y").num.toInt, v("text").str, v("color").str, v("size").num.toInt, v("align").str)
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case other => throw new IllegalArgumentException(s"unknown shape tag: $other")
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def list[A](v: ujson.Value)(f: ujson.Value => A): List[A] = v.arr.toList.map(f)
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