Initial commit: Theriapolis baseline at port/godot branch point

Captures the pre-Godot-port state of the codebase. This is the rollback anchor for the Godot port (M0 of theriapolis-rpg-implementation-plan-godot-port.md). All Phase 0 through Phase 6.5 work is included; Phase 7 is in flight. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-04-30 20:40:51 -07:00
commit b451f83174
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+namespace Theriapolis.Core.Rules.Reputation;
+
+/// <summary>
+/// Phase 6 M2 — append-only event log surfaced by the reputation screen
+/// ("why does so-and-so hate me?"). Bounded to a reasonable tail so the
+/// save file stays small even after a 100-hour playthrough.
+///
+/// Phase 6 M5 layers propagation on top: each entry will be re-walked
+/// per game-day to fan out into other settlements with distance/time
+/// decay.
+/// </summary>
+public sealed class RepLedger
+{
+    public const int MaxEntries = 256;
+
+    private readonly List<RepEvent> _entries = new();
+    private int _nextSeq = 1;
+
+    public IReadOnlyList<RepEvent> Entries => _entries;
+    public int Count => _entries.Count;
+
+    /// <summary>
+    /// Append <paramref name="ev"/> to the ledger. If <see cref="RepEvent.SequenceId"/>
+    /// is 0, a fresh monotone id is assigned; otherwise the supplied id
+    /// is preserved (used by the save-restore path).
+    /// </summary>
+    public RepEvent Append(RepEvent ev)
+    {
+        if (ev.SequenceId == 0)
+            ev = ev with { SequenceId = _nextSeq++ };
+        else if (ev.SequenceId >= _nextSeq)
+            _nextSeq = ev.SequenceId + 1;
+        _entries.Add(ev);
+        if (_entries.Count > MaxEntries) _entries.RemoveAt(0);
+        return ev;
+    }
+
+    public void Clear()
+    {
+        _entries.Clear();
+        _nextSeq = 1;
+    }
+
+    /// <summary>Largest <see cref="RepEvent.SequenceId"/> issued so far. 0 = empty ledger.</summary>
+    public int HighestSequenceId => _nextSeq - 1;
+
+    /// <summary>Most recent N events affecting <paramref name="factionId"/>.</summary>
+    public IEnumerable<RepEvent> ForFaction(string factionId, int count = 8)
+    {
+        int yielded = 0;
+        for (int i = _entries.Count - 1; i >= 0 && yielded < count; i--)
+        {
+            if (string.Equals(_entries[i].FactionId, factionId, System.StringComparison.OrdinalIgnoreCase))
+            {
+                yielded++;
+                yield return _entries[i];
+            }
+        }
+    }
+
+    /// <summary>Most recent N events affecting <paramref name="roleTag"/>.</summary>
+    public IEnumerable<RepEvent> ForRole(string roleTag, int count = 8)
+    {
+        int yielded = 0;
+        for (int i = _entries.Count - 1; i >= 0 && yielded < count; i--)
+        {
+            if (string.Equals(_entries[i].RoleTag, roleTag, System.StringComparison.OrdinalIgnoreCase))
+            {
+                yielded++;
+                yield return _entries[i];
+            }
+        }
+    }
+}