acdream/src/AcDream.Core/World/Cells/ObjCell.cs
Erik 5bc72d5cd1 feat(core): UCG Stage 1 — EnvCell.FromDat derivation (mirrors BuildLoadedCell)
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-02 09:07:18 +02:00

47 lines
1.8 KiB
C#

using System.Collections.Generic;
using System.Numerics;
namespace AcDream.Core.World.Cells;
/// <summary>
/// Base for every cell the player can stand in. Retail anchor: CObjCell
/// (acclient.h:30915). The id magnitude is the type discriminator
/// (<see cref="IsEnv"/>): low-16 &gt;= 0x100 =&gt; indoor <see cref="EnvCell"/>,
/// else outdoor <see cref="LandCell"/>.
/// </summary>
public abstract class ObjCell
{
public uint Id { get; }
public Matrix4x4 WorldTransform { get; }
public Matrix4x4 InverseWorldTransform { get; }
public Vector3 LocalBoundsMin { get; }
public Vector3 LocalBoundsMax { get; }
public IReadOnlyList<CellPortal> Portals { get; }
public IReadOnlyList<uint> StabList { get; }
public bool SeenOutside { get; }
/// <summary>
/// Retail magnitude dispatch (CObjCell::GetVisible, pseudo_c:308215).
/// Note: retail's CObjCell::GetVisible tests the full id; every real prefixed EnvCell id is >= 0x100.
/// This masks the low-16 so it works for both bare-16 and landblock-prefixed ids.
/// </summary>
public bool IsEnv => (Id & 0xFFFFu) >= 0x100u;
protected ObjCell(uint id, Matrix4x4 worldTransform, Matrix4x4 inverseWorldTransform,
Vector3 localBoundsMin, Vector3 localBoundsMax,
IReadOnlyList<CellPortal> portals, IReadOnlyList<uint> stabList,
bool seenOutside)
{
Id = id;
WorldTransform = worldTransform;
InverseWorldTransform = inverseWorldTransform;
LocalBoundsMin = localBoundsMin;
LocalBoundsMax = localBoundsMax;
Portals = portals;
StabList = stabList;
SeenOutside = seenOutside;
}
/// <summary>Retail CObjCell::point_in_cell (vtable +0x84). Is a world point inside this cell?</summary>
public abstract bool PointInCell(Vector3 worldPoint);
}