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>
66 lines
1.7 KiB
Scala
66 lines
1.7 KiB
Scala
package snake
|
|
|
|
/** A grid cell. Two points with the same `x` and `y` are `==` (case classes compare structurally). */
|
|
final case class Point(x: Int, y: Int)
|
|
|
|
enum Direction:
|
|
case Up, Down, Left, Right
|
|
|
|
enum Status:
|
|
case Playing, Paused, GameOver, Won
|
|
|
|
/** Everything that can happen to the game, as data. */
|
|
enum Action:
|
|
case Tick
|
|
case Turn(dir: Direction)
|
|
case TogglePause
|
|
case Restart
|
|
case Frame
|
|
|
|
/**
|
|
* The whole game. `snake` is head first; `seed` is the unsigned 32-bit random seed (0 until 2^32).
|
|
* `frame` and `queued` stay unused until Module 10 (`queued` is the turn waiting for the next step, Exercise 10.6).
|
|
*/
|
|
final case class GameState(
|
|
width: Int,
|
|
height: Int,
|
|
snake: List[Point],
|
|
dir: Direction,
|
|
nextDir: Direction,
|
|
apple: Option[Point],
|
|
seed: Long,
|
|
score: Int,
|
|
status: Status,
|
|
frame: Int,
|
|
queued: Option[Direction]
|
|
)
|
|
|
|
/** m02 model: the data the whole game is built from. Case classes and enums are immutable. */
|
|
object Model:
|
|
|
|
def delta(dir: Direction): Point = dir match
|
|
case Direction.Up => Point(0, -1)
|
|
case Direction.Down => Point(0, 1)
|
|
case Direction.Left => Point(-1, 0)
|
|
case Direction.Right => Point(1, 0)
|
|
|
|
def opposite(dir: Direction): Direction = dir match
|
|
case Direction.Up => Direction.Down
|
|
case Direction.Down => Direction.Up
|
|
case Direction.Left => Direction.Right
|
|
case Direction.Right => Direction.Left
|
|
|
|
def initialState(seed: Long): GameState = GameState(
|
|
width = 20,
|
|
height = 20,
|
|
snake = List(Point(10, 10), Point(9, 10), Point(8, 10)),
|
|
dir = Direction.Right,
|
|
nextDir = Direction.Right,
|
|
apple = None,
|
|
seed = seed,
|
|
score = 0,
|
|
status = Status.Playing,
|
|
frame = 0,
|
|
queued = None
|
|
)
|