public void ReadMH2O(MemoryStream ADTstream, int MH2Osize)
{
StreamTools s = new StreamTools();
long chunkStartPosition = ADTstream.Position;
// header - SMLiquidChunk
for (int a = 0; a < 256; a++)
{
int offset_instances = s.ReadLong(ADTstream); // points to SMLiquidInstance[layer_count]
int layer_count = s.ReadLong(ADTstream); // 0 if the chunk has no liquids. If > 1, the offsets will point to arrays.
int offset_attributes = s.ReadLong(ADTstream); // points to mh2o_chunk_attributes, can be ommitted for all-0
if (offset_instances >= 0)
{
// instances @24bytes
ADTstream.Seek(chunkStartPosition + offset_instances, SeekOrigin.Begin);
int liquid_type = s.ReadShort(ADTstream); //DBC - foreign_keyⁱ<uint16_t, &LiquidTypeRec::m_ID> liquid_type;
int liquid_object_or_lvf = s.ReadShort(ADTstream); //DBC - foreign_keyⁱ<uint16_t, &LiquidObjectRec::m_ID> liquid_object_or_lvf;
// if > 41, an id into DB/LiquidObject. If below, LiquidVertexFormat, used in ADT/v18#instance_vertex_data Note hardcoded LO ids below.
// if >= 42, look up via DB/LiquidType and DB/LiquidMaterial, otherwise use liquid_object_or_lvf as LVF
// also see below for offset_vertex_data: if that's 0 and lt ≠ 2 → lvf = 2
float min_height_level = s.ReadFloat(ADTstream); // used as height if no heightmap given and culling ᵘ
float max_height_level = s.ReadFloat(ADTstream); // ≥ WoD ignores value and assumes to both be 0.0 for LVF = 2! ᵘ
int x_offset = ADTstream.ReadByte(); // The X offset of the liquid square (0-7)
int y_offset = ADTstream.ReadByte(); // The Y offset of the liquid square (0-7)
int width = ADTstream.ReadByte(); // The width of the liquid square (1-8)
int height = ADTstream.ReadByte(); // The height of the liquid square (1-8)
// The above four members are only used if liquid_object_or_lvf <= 41. Otherwise they are assumed 0, 0, 8, 8. (18179)
int offset_exists_bitmap = s.ReadLong(ADTstream); // not all tiles in the instances need to be filled. always 8*8 bits.
// offset can be 0 for all-exist. also see (and extend) Talk:ADT/v18#SMLiquidInstance
int offset_vertex_data = s.ReadLong(ADTstream); // actual data format defined by LiquidMaterialRec::m_LVF via LiquidTypeRec::m_materialID
// if offset = 0 and liquidType ≠ 2, then let LVF = 2, i.e. some ocean shit
}
//attributes
if (offset_attributes >= 0)
{
ADTstream.Seek(chunkStartPosition + offset_attributes, SeekOrigin.Begin);
ulong fishable = s.ReadUint64(ADTstream); // seems to be usable as visibility information.
ulong deep = s.ReadUint64(ADTstream);
}
}
ADTstream.Seek(chunkStartPosition + MH2Osize, SeekOrigin.Begin); // set stream location to right after MH2O
}
public void ReadMCNK(MemoryStream ADTstream, int MCNKchunkNumber, int MCNKsize)
{
StreamTools s = new StreamTools();
Flags f = new Flags();
ADTRootData.MeshChunkData chunkData = new ADTRootData.MeshChunkData();
long MCNKchnkPos = ADTstream.Position;
// <Header> - 128 bytes
chunkData.flags = f.ReadMCNKflags(ADTstream);
chunkData.IndexX = s.ReadLong(ADTstream);
chunkData.IndexY = s.ReadLong(ADTstream);
chunkData.nLayers = s.ReadLong(ADTstream); // maximum 4
int nDoodadRefs = s.ReadLong(ADTstream);
chunkData.holes_high_res = s.ReadUint64(ADTstream); // only used with flags.high_res_holes
int ofsLayer = s.ReadLong(ADTstream);
int ofsRefs = s.ReadLong(ADTstream);
int ofsAlpha = s.ReadLong(ADTstream);
int sizeAlpha = s.ReadLong(ADTstream);
int ofsShadow = s.ReadLong(ADTstream); // only with flags.has_mcsh
int sizeShadow = s.ReadLong(ADTstream);
int areaid = s.ReadLong(ADTstream); // in alpha: both zone id and sub zone id, as uint16s.
int nMapObjRefs = s.ReadLong(ADTstream);
chunkData.holes_low_res = s.ReadShort(ADTstream);
int unknown_but_used = s.ReadShort(ADTstream); // in alpha: padding
byte[] ReallyLowQualityTextureingMap = new byte[16]; // uint2_t[8][8] "predTex", It is used to determine which detail doodads to show. Values are an array of two bit
for (int b = 0; b < 16; b++)
{
ReallyLowQualityTextureingMap[b] = (byte)ADTstream.ReadByte();
}
// unsigned integers, naming the layer.
ulong noEffectDoodad = s.ReadUint64(ADTstream); // WoD: may be an explicit MCDD chunk
int ofsSndEmitters = s.ReadLong(ADTstream);
int nSndEmitters = s.ReadLong(ADTstream); // will be set to 0 in the client if ofsSndEmitters doesn't point to MCSE!
int ofsLiquid = s.ReadLong(ADTstream);
int sizeLiquid = s.ReadLong(ADTstream); // 8 when not used; only read if >8.
// in alpha, remainder is padding but unused.
chunkData.MeshPosition = new Vector3(s.ReadFloat(ADTstream), s.ReadFloat(ADTstream), s.ReadFloat(ADTstream));
int ofsMCCV = s.ReadLong(ADTstream); // only with flags.has_mccv, had uint32_t textureId; in ObscuR's structure.
int ofsMCLV = s.ReadLong(ADTstream); // introduced in Cataclysm
int unused = s.ReadLong(ADTstream); // currently unused
// </header>
if (!chunkData.flags.has_mccv)
{
FillMCCV(chunkData); // fill vertex shading with 127...
}
long streamPosition = ADTstream.Position;
while (streamPosition < MCNKchnkPos + MCNKsize)
{
ADTstream.Position = streamPosition;
int chunkID = s.ReadLong(ADTstream);
int chunkSize = s.ReadLong(ADTstream);
streamPosition = ADTstream.Position + chunkSize;
switch (chunkID)
{
case (int)ChunkID.ADT.MCVT:
ReadMCVT(ADTstream, chunkData); // vertex heights
break;
case (int)ChunkID.ADT.MCLV:
ReadMCLV(ADTstream, chunkData); // chunk lighting
break;
case (int)ChunkID.ADT.MCCV:
ReadMCCV(ADTstream, chunkData); // vertex shading
break;
case (int)ChunkID.ADT.MCNR:
ReadMCNR(ADTstream, chunkData); // normals
break;
case (int)ChunkID.ADT.MCSE:
ReadMCSE(ADTstream, chunkData, chunkSize); // sound emitters
break;
case (int)ChunkID.ADT.MCBB:
ReadMCBB(ADTstream, chunkData, chunkSize);
break;
case (int)ChunkID.ADT.MCDD:
ReadMCDD(ADTstream, chunkData, chunkSize);
break;
default:
SkipUnknownChunk(ADTstream, chunkID, chunkSize);
break;
}
}
ADTRootData.meshBlockData.meshChunksData.Add(chunkData);
}
