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>
35 lines
1.3 KiB
Scala
35 lines
1.3 KiB
Scala
package snake
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package pong
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import PongModel.initialPong
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/** m11 pong app: the same wiring as App.scala (streams in, drawings out), reusing the course's modules. */
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object PongApp:
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val FRAME_MS_PONG: Long = 30
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private def paddleKey(key: String): Option[Paddle] = key match
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case "ArrowUp" | "w" | "W" => Some(Paddle.Up)
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case "ArrowDown" | "s" | "S" => Some(Paddle.Down)
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case _ => None
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def pongKey(isDown: Boolean, key: String): Option[PongAction] =
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paddleKey(key) match
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case Some(p) => Some(if isDown then PongAction.Press(p) else PongAction.Release(p))
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case None => if isDown && (key == "r" || key == "R") then Some(PongAction.Restart) else None
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lazy val pongActions: Stream[PongAction] =
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Stream
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.interval(FRAME_MS_PONG)
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.map(_ => PongAction.Frame)
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.merge(Stream.keyDowns.filterMap(pongKey(true, _)))
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.merge(Stream.keyUps.filterMap(pongKey(false, _)))
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def pongStates(seed: Long, actions: Stream[PongAction]): Stream[PongState] =
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actions.scan(initialPong(seed))(PongRules.pongUpdate).startWith(initialPong(seed))
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lazy val pongMain: IO[Stream[IO[Unit]]] =
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IO.randomSeed.map(seed =>
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pongStates(seed, pongActions).map(state => IO.drawScene(PongView.pongView(state))).clampTime(App.MAX_GAP_MS)
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)
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