87 lines
2.5 KiB
C#
87 lines
2.5 KiB
C#
using System.Text.Json.Serialization;
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namespace MultiversalDiplomacy.Model;
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/// <summary>
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/// Represents a state of the map produced by a set of move orders on a previous season.
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/// </summary>
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public class Season
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{
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/// <summary>
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/// The first turn number.
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/// </summary>
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public const int FIRST_TURN = 0;
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/// <summary>
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/// The designation of the season immediately preceding this season.
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/// If this season is an alternate timeline root, the past is from the origin timeline.
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/// The initial season does not have a past.
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/// </summary>
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public string? Past { get; }
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/// <summary>
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/// The current turn, beginning at 0. Each season (spring and fall) is one turn.
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/// Phases that only occur after the fall phase occur when Turn % 2 == 1.
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/// The current year is (Turn / 2) + 1901.
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/// </summary>
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public int Turn { get; }
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/// <summary>
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/// The timeline to which this season belongs.
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/// </summary>
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public string Timeline { get; }
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/// <summary>
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/// The multiversal designation of this season.
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/// </summary>
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[JsonIgnore]
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public string Designation => $"{this.Timeline}{this.Turn}";
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/// <summary>
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/// The season's multiversal location as a timeline-turn tuple for convenience.
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/// </summary>
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[JsonIgnore]
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public (string Timeline, int Turn) Coord => (this.Timeline, this.Turn);
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/// <summary>
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/// The shared timeline number generator.
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/// </summary>
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[JsonIgnore]
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private TimelineFactory Timelines { get; }
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private Season(string? past, int turn, string timeline, TimelineFactory factory)
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{
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this.Past = past;
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this.Turn = turn;
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this.Timeline = timeline;
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this.Timelines = factory;
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}
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public override string ToString() => Designation;
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/// <summary>
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/// Create a root season at the beginning of time.
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/// </summary>
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public static Season MakeRoot()
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{
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TimelineFactory factory = new();
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return new Season(
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past: null,
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turn: FIRST_TURN,
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timeline: factory.NextTimeline(),
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factory: factory);
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}
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/// <summary>
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/// Create a season immediately after this one in the same timeline.
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/// </summary>
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public Season MakeNext()
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=> new(this.Designation, Turn + 1, Timeline, Timelines);
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/// <summary>
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/// Create a season immediately after this one in a new timeline.
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/// </summary>
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public Season MakeFork()
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=> new(this.Designation, Turn + 1, Timelines.NextTimeline(), Timelines);
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}
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