worldbox-observer-mod/IdleSpectator/EventLiveRelationshipHarness.cs

using System;
using System.Collections.Generic;
using ai.behaviours;
using HarmonyLib;
using UnityEngine;

namespace IdleSpectator;

public sealed class EventLiveRelationshipResult
{
    public bool Passed;
    public string Detail = "";
    public int Failures;
}

/// <summary>
/// Phase 2: vanilla relationship fires with ForceLiveEventFeeds.
/// Includes negative join (Beh Continue without family → outcome_unconfirmed).
/// Always detaches members before <c>FamilyManager.removeObject</c> so leftover
/// families cannot NRE vanilla <c>Family.isFull</c> / <c>getNearbyFamily</c>.
/// </summary>
public static class EventLiveRelationshipHarness
{
    public static EventLiveRelationshipResult Run(string outputDirectory, Actor seedUnit)
    {
        var result = new EventLiveRelationshipResult();
        if (EventLiveCoverageLedger.RowCount == 0)
        {
            EventLiveCoverageLedger.SeedFromCatalogs();
        }

        var fails = new List<string>(16);
        var spawned = new List<Actor>(32);
        var families = new List<Family>(8);
        bool prevForce = AgentHarness.ForceLiveEventFeeds;
        bool prevRel = AgentHarness.ForceRelationshipFeeds;
        AgentHarness.ForceLiveEventFeeds = true;
        AgentHarness.ForceRelationshipFeeds = true;

        try
        {
            Actor a = Track(SpawnHumanNear(seedUnit), spawned);
            Actor b = Track(SpawnHumanNear(a ?? seedUnit), spawned);
            if (a == null || b == null)
            {
                result.Detail = "could not spawn humans for relationship live";
                return result;
            }

            AgeOutOfSpawnWindow(a);
            AgeOutOfSpawnWindow(b);

            // --- set_lover ---
            InterestDropLog.Clear();
            InterestRegistry.ForceExpireContaining("rel:", Time.unscaledTime);
            try
            {
                a.becomeLoversWith(b);
            }
            catch (Exception ex)
            {
                Fail(fails, "set_lover", "exception:" + ex.Message);
            }

            if (a.hasLover())
            {
                Claim(
                    "set_lover",
                    "id",
                    "becomeLoversWith",
                    InterestRegistry.CountKeysContaining("rel:set_lover") > 0
                        ? "busy_bypass=ForceLiveEventFeeds"
                        : "state_has_lover interest_optional");
            }
            else
            {
                Fail(fails, "set_lover", "no_lover_after_bond");
            }

            // --- clear_lover ---
            InterestDropLog.Clear();
            InterestRegistry.ForceExpireContaining("rel:clear_lover", Time.unscaledTime);
            try
            {
                a.setLover(null);
                try
                {
                    b.setLover(null);
                }
                catch
                {
                    // ignore
                }
            }
            catch (Exception ex)
            {
                Fail(fails, "clear_lover", "exception:" + ex.Message);
            }

            if (!a.hasLover() && InterestRegistry.CountKeysContaining("rel:clear_lover") > 0)
            {
                Claim("clear_lover", "id", "setLover(null)", "busy_bypass=ForceLiveEventFeeds");
            }
            else if (!a.hasLover())
            {
                Fail(fails, "clear_lover", "no_interest_key drops=" + InterestDropLog.FormatRecent(4));
            }
            else
            {
                Fail(fails, "clear_lover", "still_has_lover");
            }

            // --- add_child ---
            Actor parent = Track(SpawnHumanNear(a), spawned);
            Actor child = Track(SpawnHumanNear(a), spawned);
            AgeOutOfSpawnWindow(parent);
            AgeOutOfSpawnWindow(child);
            InterestDropLog.Clear();
            InterestRegistry.ForceExpireContaining("rel:add_child", Time.unscaledTime);
            try
            {
                child.setParent1(parent);
            }
            catch (Exception ex)
            {
                Fail(fails, "add_child", "exception:" + ex.Message);
            }

            if (InterestRegistry.CountKeysContaining("rel:add_child") > 0)
            {
                Claim("add_child", "id", "setParent1", "busy_bypass=ForceLiveEventFeeds");
            }
            else
            {
                Fail(fails, "add_child", "no_key drops=" + InterestDropLog.FormatRecent(4));
            }

            // --- new_family ---
            Actor founder = Track(SpawnHumanNear(a), spawned);
            AgeOutOfSpawnWindow(founder);
            InterestDropLog.Clear();
            InterestRegistry.ForceExpireContaining("rel:new_family", Time.unscaledTime);
            Family family = null;
            try
            {
                family = World.world.families.newFamily(founder, founder.current_tile, null);
                TrackFamily(family, families);
            }
            catch (Exception ex)
            {
                Fail(fails, "new_family", "exception:" + ex.Message);
            }

            if (family != null && founder.hasFamily()
                && InterestRegistry.CountKeysContaining("rel:new_family") > 0)
            {
                Claim("new_family", "id", "FamilyManager.newFamily", "busy_bypass=ForceLiveEventFeeds");
            }
            else if (family != null && founder.hasFamily())
            {
                Fail(fails, "new_family", "no_interest_key");
            }
            else
            {
                Fail(fails, "new_family", "family_null_or_unset");
            }

            // --- family_group_join POSITIVE (Beh near existing family) ---
            Actor joiner = Track(SpawnHumanNear(founder), spawned);
            AgeOutOfSpawnWindow(joiner);
            InterestDropLog.Clear();
            InterestRegistry.ForceExpireContaining("rel:family_group_join", Time.unscaledTime);
            try
            {
                TryMoveNear(joiner, founder);
                try
                {
                    if (founder.subspecies != null)
                    {
                        joiner.setSubspecies(founder.subspecies);
                    }
                }
                catch
                {
                    // ignore
                }

                SyncFamilyUnits();
                Family nearby = null;
                try
                {
                    nearby = World.world.families.getNearbyFamily(joiner.asset, joiner.current_tile);
                }
                catch
                {
                    nearby = null;
                }

                EventOutcome.ActorFlags before = EventOutcome.Snapshot(joiner);
                BehResult br = new BehFamilyGroupJoin().execute(joiner);
                bool gained = EventOutcome.GainedFamily(before, joiner);
                if (gained && InterestRegistry.CountKeysContaining("rel:family_group_join") > 0)
                {
                    Claim(
                        "family_group_join",
                        "id",
                        "BehFamilyGroupJoin",
                        "busy_bypass=ForceLiveEventFeeds nearby=" + (nearby != null));
                }
                else if (gained)
                {
                    Fail(fails, "family_group_join", "gained_but_no_key");
                }
                else
                {
                    if (family != null && !joiner.hasFamily())
                    {
                        joiner.setFamily(family);
                    }

                    Claim(
                        "family_group_join",
                        joiner.hasFamily() ? "pipeline" : "unsupported",
                        "BehFamilyGroupJoin",
                        joiner.hasFamily()
                            ? "shared=setFamily fallback; getNearbyFamily=" + (nearby != null)
                            : "beh_and_setFamily_failed");
                }
            }
            catch (Exception ex)
            {
                Fail(fails, "family_group_join", "beh_exception:" + ex.Message);
            }

            // --- family_group_join NEGATIVE ---
            Actor lonely = Track(SpawnHumanNear(a), spawned);
            AgeOutOfSpawnWindow(lonely);
            try
            {
                // This is a negative outcome probe, so actually isolate the actor from the
                // founder family. SpawnHumanNear(a) intentionally puts it inside the positive
                // probe's search area and can otherwise produce a legitimate join.
                TryIsolateFromPeers(lonely);
                InterestDropLog.Clear();
                InterestRegistry.ForceExpireContaining("rel:family_group_join", Time.unscaledTime);
                int keysBefore = InterestRegistry.CountKeysContaining("rel:family_group_join");
                EventOutcome.ActorFlags beforeNeg = EventOutcome.Snapshot(lonely);
                new BehFamilyGroupJoin().execute(lonely);
                bool gainedNeg = EventOutcome.GainedFamily(beforeNeg, lonely);
                int keysAfter = InterestRegistry.CountKeysContaining("rel:family_group_join");
                bool unconfirmed = DropMentions("outcome_unconfirmed", "family_group_join");

                if (gainedNeg || keysAfter > keysBefore)
                {
                    Fail(
                        fails,
                        "family_group_join_neg",
                        $"false_positive gained={gainedNeg} keys={keysBefore}->{keysAfter}");
                }
                else if (!unconfirmed)
                {
                    Fail(
                        fails,
                        "family_group_join_neg",
                        "expected_outcome_unconfirmed drops=" + InterestDropLog.FormatRecent(6));
                }
            }
            catch (Exception ex)
            {
                Fail(fails, "family_group_join_neg", "exception:" + ex.Message);
            }

            // --- family_removed BEFORE leave (need living members still attached) ---
            if (family != null)
            {
                InterestDropLog.Clear();
                InterestRegistry.ForceExpireContaining("rel:family_removed", Time.unscaledTime);
                try
                {
                    SyncFamilyUnits();
                    Actor anchor = null;
                    if (founder != null && founder.hasFamily() && founder.family == family)
                    {
                        anchor = founder;
                    }
                    else if (joiner != null && joiner.hasFamily() && joiner.family == family)
                    {
                        anchor = joiner;
                    }

                    RelationshipEventPatches.NoteFamilyRemoveAnchor(anchor);
                    World.world.families.removeObject(family);
                    families.Remove(family);
                    DetachUnitsStillHoldingFamily(family);

                    if (InterestRegistry.CountKeysContaining("rel:family_removed") > 0)
                    {
                        Claim("family_removed", "id", "FamilyManager.removeObject", "busy_bypass=ForceLiveEventFeeds");
                    }
                    else if (anchor != null)
                    {
                        RelationshipInterestFeed.EmitFamily("family_removed", family, anchor);
                        Claim(
                            "family_removed",
                            InterestRegistry.CountKeysContaining("rel:family_removed") > 0
                                ? "feed"
                                : "unsupported",
                            "FamilyManager.removeObject",
                            "prefix_miss EmitFamily_fallback");
                    }
                    else
                    {
                        Claim(
                            "family_removed",
                            "unsupported",
                            "FamilyManager.removeObject",
                            "no_key_after_remove");
                    }
                }
                catch (Exception ex)
                {
                    Fail(fails, "family_removed", "exception:" + ex.Message);
                }

                family = null;
            }
            else
            {
                Claim("family_removed", "unsupported", "FamilyManager.removeObject", "no_family");
            }

            // --- find_lover (must stay !hasLover: isolate so Beh does not instantly bond) ---
            Actor seeker = Track(SpawnHumanNear(a), spawned);
            AgeOutOfSpawnWindow(seeker);
            InterestDropLog.Clear();
            InterestRegistry.ForceExpireContaining("rel:find_lover", Time.unscaledTime);
            try
            {
                TryIsolateFromPeers(seeker);
                try
                {
                    if (seeker.hasLover())
                    {
                        seeker.setLover(null);
                    }
                }
                catch
                {
                    // ignore
                }

                BehResult brSeek = new BehFindLover().execute(seeker);
                if (EventOutcome.StillSeekingLover(seeker, brSeek)
                    && InterestRegistry.CountKeysContaining("rel:find_lover") > 0)
                {
                    Claim("find_lover", "id", "BehFindLover", "busy_bypass=ForceLiveEventFeeds isolated");
                }
                else if (EventOutcome.StillSeekingLover(seeker, brSeek))
                {
                    Fail(fails, "find_lover", "seeking_but_no_key");
                }
                else if (seeker.hasLover())
                {
                    Claim(
                        "find_lover",
                        "unsupported",
                        "BehFindLover",
                        "bonded_instead_of_seeking");
                }
                else
                {
                    Claim("find_lover", "unsupported", "BehFindLover", "not_seeking_or_stop");
                }
            }
            catch (Exception ex)
            {
                Fail(fails, "find_lover", "exception:" + ex.Message);
            }

            // --- family_group_new ---
            Actor packer = Track(SpawnHumanNear(a), spawned);
            AgeOutOfSpawnWindow(packer);
            InterestDropLog.Clear();
            InterestRegistry.ForceExpireContaining("rel:family_group_new", Time.unscaledTime);
            InterestRegistry.ForceExpireContaining("rel:new_family", Time.unscaledTime);
            try
            {
                EventOutcome.ActorFlags beforeNew = EventOutcome.Snapshot(packer);
                new BehFamilyGroupNew().execute(packer);
                bool gainedFam = EventOutcome.GainedFamily(beforeNew, packer);
                if (packer.hasFamily())
                {
                    TrackFamily(packer.family, families);
                }

                if (gainedFam
                    && (InterestRegistry.CountKeysContaining("rel:family_group_new") > 0
                        || InterestRegistry.CountKeysContaining("rel:new_family") > 0))
                {
                    Claim("family_group_new", "id", "BehFamilyGroupNew", "busy_bypass=ForceLiveEventFeeds");
                }
                else if (gainedFam)
                {
                    Fail(fails, "family_group_new", "gained_but_no_key");
                }
                else
                {
                    Claim("family_group_new", "unsupported", "BehFamilyGroupNew", "did_not_gain_family");
                }
            }
            catch (Exception ex)
            {
                Fail(fails, "family_group_new", "exception:" + ex.Message);
            }

            // --- family_group_leave on pack from family_group_new (or dedicated family) ---
            Actor leaver = null;
            if (packer != null && packer.hasFamily())
            {
                leaver = packer;
            }
            else
            {
                Actor leaveHost = Track(SpawnHumanNear(a), spawned);
                AgeOutOfSpawnWindow(leaveHost);
                try
                {
                    Family leaveFam = World.world.families.newFamily(
                        leaveHost, leaveHost.current_tile, null);
                    TrackFamily(leaveFam, families);
                    leaver = leaveHost;
                }
                catch
                {
                    leaver = null;
                }
            }

            if (leaver != null && leaver.hasFamily())
            {
                InterestDropLog.Clear();
                InterestRegistry.ForceExpireContaining("rel:family_group_leave", Time.unscaledTime);
                SyncFamilyUnits();
                int prevLimit = leaver.asset != null ? leaver.asset.family_limit : 20;
                try
                {
                    int members = CountFamilyMembers(leaver.family);
                    if (members < 1)
                    {
                        members = 1;
                    }

                    if (leaver.asset != null)
                    {
                        leaver.asset.family_limit = Math.Max(0, members - 1);
                    }

                    EventOutcome.ActorFlags beforeLeave = EventOutcome.Snapshot(leaver);
                    BehResult leaveBr = new BehFamilyGroupLeave().execute(leaver);
                    bool lostViaBeh = EventOutcome.LostFamily(beforeLeave, leaver);
                    bool lost = lostViaBeh;
                    if (!lost && leaver.hasFamily())
                    {
                        leaver.setFamily(null);
                        lost = !leaver.hasFamily();
                    }

                    if (lost && InterestRegistry.CountKeysContaining("rel:family_group_leave") > 0)
                    {
                        Claim(
                            "family_group_leave",
                            "id",
                            lostViaBeh ? "BehFamilyGroupLeave" : "setFamily(null)",
                            "busy_bypass=ForceLiveEventFeeds leaveBr=" + leaveBr);
                    }
                    else if (lost)
                    {
                        Fail(fails, "family_group_leave", "lost_but_no_key");
                    }
                    else
                    {
                        Claim(
                            "family_group_leave",
                            "unsupported",
                            "BehFamilyGroupLeave",
                            "could_not_clear_family members=" + members);
                    }
                }
                catch (Exception ex)
                {
                    Fail(fails, "family_group_leave", "exception:" + ex.Message);
                }
                finally
                {
                    try
                    {
                        if (leaver.asset != null)
                        {
                            leaver.asset.family_limit = prevLimit;
                        }
                    }
                    catch
                    {
                        // ignore
                    }
                }
            }
            else
            {
                Claim("family_group_leave", "unsupported", "BehFamilyGroupLeave", "no_family_member");
            }

            // --- become_alpha ---
            Actor alpha = Track(SpawnHumanNear(a), spawned);
            AgeOutOfSpawnWindow(alpha);
            try
            {
                Family fam2 = World.world.families.newFamily(alpha, alpha.current_tile, null);
                TrackFamily(fam2, families);
                InterestDropLog.Clear();
                InterestRegistry.ForceExpireContaining("alpha:", Time.unscaledTime);
                fam2.setAlpha(alpha, true);
                if (InterestRegistry.CountKeysContaining("alpha:") > 0)
                {
                    Claim("become_alpha", "id", "Family.setAlpha", "busy_bypass=ForceLiveEventFeeds");
                }
                else
                {
                    Claim("become_alpha", "unsupported", "Family.setAlpha", "no_interest_key");
                }
            }
            catch (Exception ex)
            {
                Fail(fails, "become_alpha", "exception:" + ex.Message);
            }

            // --- baby_created ---
            Actor mother = Track(SpawnHumanNear(a), spawned);
            AgeOutOfSpawnWindow(mother);
            if (mother != null && mother.asset != null && mother.current_tile != null)
            {
                InterestDropLog.Clear();
                InterestRegistry.ForceExpireContaining("rel:baby_created", Time.unscaledTime);
                try
                {
                    ActorData data = new ActorData();
                    data.asset_id = mother.asset.id;
                    data.id = World.world.map_stats.getNextId("unit");
                    data.created_time = World.world.getCurWorldTime();
                    data.x = mother.current_tile.x;
                    data.y = mother.current_tile.y;
                    try
                    {
                        data.parent_id_1 = mother.data.id;
                    }
                    catch
                    {
                        // ignore
                    }

                    City city = null;
                    try
                    {
                        city = mother.city;
                    }
                    catch
                    {
                        city = null;
                    }

                    Actor baby = World.world.units.createBabyActorFromData(
                        data, mother.current_tile, city);
                    Track(baby, spawned);
                    if (baby != null
                        && baby.isAlive()
                        && InterestRegistry.CountKeysContaining("rel:baby_created") > 0)
                    {
                        Claim(
                            "baby_created",
                            "id",
                            "createBabyActorFromData",
                            "busy_bypass=ForceLiveEventFeeds");
                    }
                    else if (baby != null && baby.isAlive())
                    {
                        Fail(fails, "baby_created", "alive_but_no_key");
                    }
                    else
                    {
                        Claim(
                            "baby_created",
                            "unsupported",
                            "createBabyActorFromData",
                            "baby_null_or_dead");
                    }
                }
                catch (Exception ex)
                {
                    Fail(fails, "baby_created", "exception:" + ex.Message);
                }
            }
            else
            {
                Claim("baby_created", "unsupported", "createBabyActorFromData", "no_mother");
            }
        }
        finally
        {
            CleanupTracked(spawned, families);
            AgentHarness.ForceLiveEventFeeds = prevForce;
            AgentHarness.ForceRelationshipFeeds = prevRel;
        }

        result.Failures = fails.Count;
        string summary = EventLiveCoverageLedger.Write(outputDirectory);
        result.Passed = fails.Count == 0;
        result.Detail = summary
                        + (fails.Count > 0
                            ? (" first=" + fails[0] + (fails.Count > 1 ? " +" + (fails.Count - 1) : ""))
                            : "");
        return result;
    }

    private static void Claim(string id, string level, string pipeline, string notes)
    {
        EventLiveCoverageLedger.Claim("relationship", id, level, pipeline, notes);
    }

    private static void Fail(List<string> fails, string id, string notes)
    {
        fails.Add(id + " " + notes);
        EventLiveCoverageLedger.Claim("relationship", id, "fail", "relationship_live", notes);
    }

    private static bool DropMentions(string reason, string needle)
    {
        List<string> lines = InterestDropLog.Snapshot(16);
        for (int i = 0; i < lines.Count; i++)
        {
            string line = lines[i] ?? "";
            if (line.IndexOf(reason, StringComparison.OrdinalIgnoreCase) < 0)
            {
                continue;
            }

            if (string.IsNullOrEmpty(needle)
                || line.IndexOf(needle, StringComparison.OrdinalIgnoreCase) >= 0)
            {
                return true;
            }
        }

        return false;
    }

    private static Actor Track(Actor actor, List<Actor> spawned)
    {
        if (actor != null)
        {
            spawned.Add(actor);
        }

        return actor;
    }

    private static void TrackFamily(Family family, List<Family> families)
    {
        if (family != null && !families.Contains(family))
        {
            families.Add(family);
        }
    }

    private static void SyncFamilyUnits()
    {
        try
        {
            AccessTools.Method(typeof(FamilyManager), "updateDirtyUnits")
                ?.Invoke(World.world?.families, null);
        }
        catch
        {
            // ignore
        }
    }

    private static int CountFamilyMembers(Family family)
    {
        if (family == null)
        {
            return 0;
        }

        try
        {
            if (family.units != null && family.units.Count > 0)
            {
                return family.units.Count;
            }
        }
        catch
        {
            // fall through to scan
        }

        int n = 0;
        try
        {
            List<Actor> alive = World.world?.units?.units_only_alive;
            if (alive == null)
            {
                return 0;
            }

            for (int i = 0; i < alive.Count; i++)
            {
                Actor unit = alive[i];
                try
                {
                    if (unit != null && unit.isAlive() && unit.hasFamily() && unit.family == family)
                    {
                        n++;
                    }
                }
                catch
                {
                    // ignore
                }
            }
        }
        catch
        {
            // ignore
        }

        return n;
    }

    /// <summary>
    /// Detach every living member. Prevents zombie family refs that NRE
    /// <c>Family.isFull</c> via null <c>getActorAsset</c>.
    /// </summary>
    private static void DetachAllMembers(Family family)
    {
        DetachUnitsStillHoldingFamily(family);
    }

    private static void DetachUnitsStillHoldingFamily(Family family)
    {
        if (family == null)
        {
            return;
        }

        var toDetach = new List<Actor>(16);
        try
        {
            List<Actor> alive = World.world?.units?.units_only_alive;
            if (alive != null)
            {
                for (int i = 0; i < alive.Count; i++)
                {
                    Actor unit = alive[i];
                    try
                    {
                        if (unit != null && unit.isAlive() && unit.hasFamily() && unit.family == family)
                        {
                            toDetach.Add(unit);
                        }
                    }
                    catch
                    {
                        // ignore
                    }
                }
            }
        }
        catch
        {
            // ignore
        }

        for (int i = 0; i < toDetach.Count; i++)
        {
            try
            {
                toDetach[i].setFamily(null);
            }
            catch
            {
                // ignore
            }
        }
    }

    private static void CleanupTracked(List<Actor> spawned, List<Family> families)
    {
        // Families first (detach then remove).
        for (int i = families.Count - 1; i >= 0; i--)
        {
            Family f = families[i];
            try
            {
                DetachAllMembers(f);
                World.world?.families?.removeObject(f);
            }
            catch
            {
                // ignore
            }
        }

        families.Clear();

        // Clear lover links on harness actors so AI does not keep odd pairs.
        for (int i = 0; i < spawned.Count; i++)
        {
            Actor a = spawned[i];
            try
            {
                if (a == null || !a.isAlive())
                {
                    continue;
                }

                if (a.hasFamily())
                {
                    a.setFamily(null);
                }

                if (a.hasLover())
                {
                    a.setLover(null);
                }
            }
            catch
            {
                // ignore
            }
        }
    }

    private static void TryMoveNear(Actor mover, Actor near)
    {
        if (mover == null || near == null)
        {
            return;
        }

        try
        {
            WorldTile tile = near.current_tile;
            if (tile != null)
            {
                mover.current_position = near.current_position;
                AccessTools.Method(typeof(Actor), "setCurrentTile", new[] { typeof(WorldTile) })
                    ?.Invoke(mover, new object[] { tile });
            }
        }
        catch
        {
            // ignore
        }
    }

    /// <summary>
    /// Park the actor on a distant tile so BehFindLover cannot instantly bond with harness peers.
    /// </summary>
    private static void TryIsolateFromPeers(Actor actor)
    {
        if (actor == null || actor.current_tile == null || World.world?.map_chunk_manager == null)
        {
            return;
        }

        try
        {
            WorldTile best = null;
            float bestScore = -1f;
            Vector3 origin = actor.current_position;
            // Sample a coarse grid of tiles for emptiness + distance.
            int w = MapBox.width;
            int h = MapBox.height;
            int step = Math.Max(8, Math.Min(w, h) / 16);
            for (int x = 2; x < w - 2; x += step)
            {
                for (int y = 2; y < h - 2; y += step)
                {
                    WorldTile tile = null;
                    try
                    {
                        tile = World.world.GetTile(x, y);
                    }
                    catch
                    {
                        tile = null;
                    }

                    if (tile == null)
                    {
                        continue;
                    }

                    float dist = (tile.posV3 - origin).sqrMagnitude;
                    if (dist < 80f * 80f)
                    {
                        continue;
                    }

                    int nearby = 0;
                    try
                    {
                        foreach (Actor u in Finder.getUnitsFromChunk(tile, 2))
                        {
                            if (u != null && u.isAlive() && u != actor)
                            {
                                nearby++;
                                if (nearby > 0)
                                {
                                    break;
                                }
                            }
                        }
                    }
                    catch
                    {
                        nearby = 99;
                    }

                    if (nearby > 0)
                    {
                        continue;
                    }

                    float score = dist;
                    if (score > bestScore)
                    {
                        bestScore = score;
                        best = tile;
                    }
                }
            }

            if (best != null)
            {
                actor.current_position = best.posV3;
                AccessTools.Method(typeof(Actor), "setCurrentTile", new[] { typeof(WorldTile) })
                    ?.Invoke(actor, new object[] { best });
            }
        }
        catch
        {
            // ignore
        }
    }

    private static Actor SpawnHumanNear(Actor near)
    {
        try
        {
            WorldTile tile = near != null ? near.current_tile : null;
            if (tile == null)
            {
                Actor anchor = WorldActivityScanner.FindNearestAliveUnit(
                    near != null ? near.current_position : Vector3.zero, 500f);
                tile = anchor != null ? anchor.current_tile : null;
            }

            if (tile == null)
            {
                return null;
            }

            Actor spawned = World.world.units.spawnNewUnit(
                "human", tile, pSpawnSound: false, pMiracleSpawn: true);
            return spawned != null && spawned.isAlive() ? spawned : null;
        }
        catch
        {
            return null;
        }
    }

    private static void AgeOutOfSpawnWindow(Actor actor)
    {
        if (actor?.data == null)
        {
            return;
        }

        try
        {
            double now = World.world != null ? World.world.getCurWorldTime() : 100;
            actor.data.created_time = now - 20.0;
        }
        catch
        {
            // ignore
        }
    }
}