70 lines
2.7 KiB
C#
70 lines
2.7 KiB
C#
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using System.Collections.Generic;
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using System.Linq;
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using Theriapolis.Core.Data;
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namespace Theriapolis.GodotHost.UI;
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/// <summary>
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/// Final ability score math — base assignment + clade and species mods.
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/// Used by StepStats and Aside to render the score breakdown with a
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/// "+N from Canidae · +2 from Wolf" hover popover.
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///
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/// For hybrids the lineage contribution comes from BOTH parent clades
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/// (each tagged with its lineage in the source label) and the dominant
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/// species. Core's CharacterBuilder.TryBuildHybrid is the authority on
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/// the final mechanical rules at character-finalize time; this is a
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/// preview-display helper.
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/// </summary>
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public static class AbilityCalc
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{
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public readonly record struct ModSource(string Label, int Value);
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public static List<ModSource> Sources(string ability, CharacterDraft draft)
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{
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var list = new List<ModSource>();
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if (draft.IsHybrid)
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{
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AddCladeSource(list, ability, CodexContent.Clade(draft.SireCladeId), " (sire)");
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AddCladeSource(list, ability, CodexContent.Clade(draft.DamCladeId), " (dam)");
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}
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else
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{
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AddCladeSource(list, ability, CodexContent.Clade(draft.CladeId), "");
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}
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var sp = CodexContent.SpeciesById(draft.EffectiveSpeciesId);
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if (sp is not null) AddDictSource(list, ability, sp.Name, sp.AbilityMods);
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return list;
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}
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public static int TotalBonus(string ability, CharacterDraft draft)
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=> Sources(ability, draft).Sum(s => s.Value);
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public static int BaseScore(string ability, CharacterDraft draft)
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=> draft.StatAssign.ContainsKey(ability) ? (int)draft.StatAssign[ability] : 0;
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public static int FinalScore(string ability, CharacterDraft draft)
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=> BaseScore(ability, draft) + TotalBonus(ability, draft);
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public static int D20Modifier(int score) => (int)System.Math.Floor((score - 10) / 2.0);
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public static string FormatSigned(int n) => n >= 0 ? $"+{n}" : n.ToString();
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/// <summary>"+1 from Canidae · +2 from Wolf" — empty when no sources.</summary>
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public static string FormatBreakdown(IEnumerable<ModSource> sources) =>
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string.Join(" · ", sources.Select(s => $"{FormatSigned(s.Value)} from {s.Label}"));
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private static void AddCladeSource(List<ModSource> list, string ability, CladeDef? clade, string suffix)
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{
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if (clade is null) return;
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AddDictSource(list, ability, clade.Name + suffix, clade.AbilityMods);
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}
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private static void AddDictSource(List<ModSource> list, string ability, string sourceName, Dictionary<string, int> mods)
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{
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if (mods.TryGetValue(ability, out int v) && v != 0)
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list.Add(new ModSource(sourceName, v));
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}
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}
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