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fix(ui): port exact paperdoll body selection

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Resolve and sample retail's authored nine-color paperdoll click map, preserve local click coordinates, and select the stable highest-priority worn item with the player fallback. Keep targeted-use body clicks routed to self and pin both synthetic and live-DAT conformance.

Co-Authored-By: Codex <codex@openai.com>
This commit is contained in:
Erik 2026-07-11 11:56:26 +02:00
parent 2644d1d527
commit 0b74d19475
16 changed files with 490 additions and 32 deletions
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92
src/AcDream.App/UI/Layout/PaperdollClickMap.cs Normal file
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using AcDream.Core.Items;
using AcDream.Core.Textures;
using DatReaderWriter;
using DatReaderWriter.DBObjs;
namespace AcDream.App.UI.Layout;
/// <summary>
/// CPU-side body-part map used by retail's paperdoll drag mask. Ports
/// <c>gmPaperDollUI::CreateClickMap @ 0x004A4850</c> and
/// <c>gmPaperDollUI::GetPaperDollItemUnderMouse @ 0x004A4920</c>.
/// </summary>
public sealed class PaperdollClickMap
{
public const uint ClickMapEnum = 0x1000000Cu;
public const uint InterfaceEnumCategory = 7u;
private readonly byte[] _rgba;
public int Width { get; }
public int Height { get; }
public PaperdollClickMap(byte[] rgba, int width, int height)
{
ArgumentNullException.ThrowIfNull(rgba);
if (width <= 0) throw new ArgumentOutOfRangeException(nameof(width));
if (height <= 0) throw new ArgumentOutOfRangeException(nameof(height));
if (rgba.Length < checked(width * height * 4))
throw new ArgumentException("The RGBA buffer is smaller than the declared map.", nameof(rgba));
_rgba = rgba;
Width = width;
Height = height;
}
/// <summary>
/// Resolves <c>DBObj::GetDIDByEnum(0x1000000C, 7)</c> through the portal master map
/// and decodes the resulting RenderSurface for exact per-pixel sampling.
/// The caller owns synchronization around <paramref name="dats"/>.
/// </summary>
public static PaperdollClickMap? Load(DatCollection dats)
{
ArgumentNullException.ThrowIfNull(dats);
uint masterDid = (uint)dats.Portal.Header.MasterMapId;
if (masterDid == 0
|| !dats.Portal.TryGet<EnumIDMap>(masterDid, out var master)
|| master is null
|| !master.ClientEnumToID.TryGetValue(InterfaceEnumCategory, out uint subMapDid)
|| !dats.Portal.TryGet<EnumIDMap>(subMapDid, out var subMap)
|| subMap is null
|| !subMap.ClientEnumToID.TryGetValue(ClickMapEnum, out uint surfaceDid))
return null;
if (!dats.Portal.TryGet<RenderSurface>(surfaceDid, out var surface)
&& !dats.HighRes.TryGet<RenderSurface>(surfaceDid, out surface))
return null;
Palette? palette = surface.DefaultPaletteId != 0
? dats.Get<Palette>(surface.DefaultPaletteId)
: null;
DecodedTexture decoded = SurfaceDecoder.DecodeRenderSurface(surface, palette);
return decoded.Width > 1 && decoded.Height > 1
? new PaperdollClickMap(decoded.Rgba8, decoded.Width, decoded.Height)
: null;
}
public EquipMask GetBodyLocation(int x, int y)
{
if ((uint)x >= (uint)Width || (uint)y >= (uint)Height)
return EquipMask.None;
int pixel = (y * Width + x) * 4;
byte r = _rgba[pixel];
byte g = _rgba[pixel + 1];
byte b = _rgba[pixel + 2];
return (r, g, b) switch
{
(0x00, 0x00, 0xFF) => EquipMask.HeadWear,
(0x00, 0xFF, 0x00) => EquipMask.ChestWear | EquipMask.ChestArmor,
(0xFF, 0x00, 0x00) => EquipMask.AbdomenWear | EquipMask.AbdomenArmor,
(0x00, 0xFF, 0xFF) => EquipMask.UpperArmWear | EquipMask.UpperArmArmor,
(0xFF, 0x00, 0xFF) => EquipMask.LowerArmWear | EquipMask.LowerArmArmor,
(0xFF, 0xFF, 0x00) => EquipMask.UpperLegWear | EquipMask.UpperLegArmor,
(0x00, 0x00, 0x80) => EquipMask.LowerLegWear | EquipMask.LowerLegArmor,
(0x00, 0x80, 0x00) => EquipMask.HandWear,
(0x80, 0x00, 0x00) => EquipMask.FootWear,
_ => EquipMask.None,
};
}
}