three bug-encoding invariants, one red/green cycle each: - Coins.TrySubtract fails instead of clamping - LevelTime rejects zero (continued-run zero best-times) - SkillLevel has no zero (unowned is absence, not Level=1) plan: drop signed NetCoins; add Attempt outcome as idempotency guard
17 lines
568 B
C#
17 lines
568 B
C#
namespace Mr.BrickAdventures.Progression;
|
|
|
|
/// <summary>
|
|
/// A completion time for one Level. Strictly positive — a zero time means the clock was never
|
|
/// running, which is a defect rather than a fast run.
|
|
/// </summary>
|
|
public readonly struct LevelTime
|
|
{
|
|
public double Seconds { get; }
|
|
|
|
private LevelTime(double seconds) => Seconds = seconds;
|
|
|
|
public static LevelTime Of(double seconds) => seconds <= 0
|
|
? throw new ArgumentOutOfRangeException(nameof(seconds), seconds, "A completion time must be positive.")
|
|
: new LevelTime(seconds);
|
|
}
|