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test(p0): dat-backed conformance loader + characterized cottage-doorway topology

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P0 (verbatim-spatial-pipeline-port) Tasks 1+2. ConformanceDats loads the
cottage-doorway cells from the real dats with their real ContainmentBsp;
CottageDoorwayCharacterizationTests maps the Holtburg 0140..017F indoor
neighborhood and pins the master-plan threshold building (origin
161.93,7.50,94.00): 0xA9B40170 vestibule (exit portal 0xFFFF + portal to
0171), 0xA9B40171 room. Grid math confirms the outdoor side is landcell
0xA9B40031 -> the 0031<->0170<->0171 ping-pong is verified real. Verified
interior points recorded for the point_in_cell/find_cell_list goldens.

Plan: docs/superpowers/plans/2026-06-03-p0-conformance-apparatus.md
Notes: docs/research/2026-06-03-p0-conformance-apparatus-notes.md

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Erik 2026-06-03 14:20:17 +02:00
parent a859116d5f
commit a90f34368f
4 changed files with 1000 additions and 0 deletions
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tests/AcDream.Core.Tests/Conformance/ConformanceDats.cs Normal file
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using System;
using System.IO;
using System.Numerics;
using AcDream.Core.Physics;
using AcDream.Core.World.Cells;
using DatReaderWriter;
using DatReaderWriter.Options;
using DatEnvCell = DatReaderWriter.DBObjs.EnvCell;
using DatEnvironment = DatReaderWriter.DBObjs.Environment;
using Env = System.Environment;
namespace AcDream.Core.Tests.Conformance;
/// <summary>
/// P0 conformance apparatus — headless load of the real Holtburg dats.
/// Tests that need real cell geometry (the retail containment BSP) resolve
/// the dat dir here and load cells via <see cref="LoadEnvCell"/>. Returns
/// null dat dir when the dats are absent (CI) so callers can skip cleanly,
/// matching DoorBugTrajectoryReplayTests.ResolveDatDir.
///
/// Mirrors the proven dat-read pattern at
/// DoorBugTrajectoryReplayTests.cs:184-219 + EnvCell.FromDat (EnvCell.cs:42-76).
/// </summary>
public static class ConformanceDats
{
private const uint EnvironmentFilePrefix = 0x0D000000u; // dat namespace for Environment files
/// <summary>The Holtburg landblock these fixtures live in.</summary>
public const uint HoltburgLandblock = 0xA9B40000u;
/// <summary>Resolve the client dat directory, or null if unavailable (skip the test).</summary>
public static string? ResolveDatDir()
{
var fromEnv = Env.GetEnvironmentVariable("ACDREAM_DAT_DIR");
if (!string.IsNullOrWhiteSpace(fromEnv) && Directory.Exists(fromEnv))
return fromEnv;
var def = Path.Combine(
Env.GetFolderPath(Env.SpecialFolder.UserProfile),
"Documents", "Asheron's Call");
return Directory.Exists(def) ? def : null;
}
/// <summary>The physics-verbatim cell→world transform (no +2cm render lift).</summary>
public static Matrix4x4 WorldTransform(DatEnvCell datCell) =>
Matrix4x4.CreateFromQuaternion(datCell.Position.Orientation) *
Matrix4x4.CreateTranslation(datCell.Position.Origin);
/// <summary>
/// Load one EnvCell from the dats with its REAL containment BSP, and register
/// it into <paramref name="cache"/> as a CellPhysics. Returns the high-level
/// EnvCell (PointInCell) so a single load serves both membership predicates.
/// </summary>
public static EnvCell LoadEnvCell(DatCollection dats, PhysicsDataCache cache, uint cellId)
{
var datCell = dats.Get<DatEnvCell>(cellId)
?? throw new InvalidOperationException($"EnvCell 0x{cellId:X8} not found in dats");
var environment = dats.Get<DatEnvironment>(EnvironmentFilePrefix | datCell.EnvironmentId)
?? throw new InvalidOperationException($"Environment 0x{datCell.EnvironmentId:X8} not found");
if (!environment.Cells.TryGetValue(datCell.CellStructure, out var cellStruct) || cellStruct is null)
throw new InvalidOperationException($"CellStruct {datCell.CellStructure} missing from environment");
var world = WorldTransform(datCell);
cache.CacheCellStruct(cellId, datCell, cellStruct, world); // physics CellPhysics (real CellBSP)
return EnvCell.FromDat(cellId, datCell, cellStruct, world); // render/containment EnvCell (real ContainmentBsp)
}
}