public static TexEntry[] ReadEntries(byte[] fileData)
{
List<TexEntry> entries = new List<TexEntry>();
var reader = new DataReader(fileData);
// Unknown
reader.ReadInt32();
while (true)
{
var entry = new TexEntry();
entry.CellOffset = reader.ReadInt32();
entry.DirectoryOffset = reader.ReadInt32();
entry.Size = reader.ReadInt32();
if (entry.CellOffset < 0)
break;
entries.Add(entry);
}
return entries.ToArray();
}
private static string GetString(DataReader reader, int offset)
{
int tempOffset = reader.Offset;
reader.SetOffset(offset);
var value = reader.ReadZString();
reader.SetOffset(tempOffset);
return value;
}
public void ReadEntries()
{
Entries.Clear();
DataReader reader = new DataReader(FileData);
Entry entry;
while ((entry = readEntry(reader)) != null)
{
Entries.Add(entry);
}
}
Child readChild(DataReader reader)
{
int t = reader.ReadInt32();
if (t == 0)
{
return null;
}
Child child = new Child();
child.TextureOffset = t;
child.VifOffset = reader.ReadInt32();
child.VifLength = reader.ReadInt32();
return child;
}
public static List<ObjectData> Decode(byte[] data, int startOffset, int length)
{
var reader = new DataReader(data, startOffset, length);
var count = reader.ReadInt16();
var flags = reader.ReadInt16();
var stringOffset = reader.ReadInt32();
var objects = new List<ObjectData>(count);
for (int i = 0; i < count; i++)
{
var obj = new ObjectData();
int nameStringOffset = reader.ReadInt32();
obj.Name = GetString(reader, stringOffset + nameStringOffset);
short structSize = reader.ReadInt16(); // Size would be 20 if there isn't a stringoffsetarray, but usually 24 with an empty array
obj.I6 = reader.ReadInt16();
obj.Floats = new float[3];
obj.Floats[0] = reader.ReadFloat();
obj.Floats[1] = reader.ReadFloat();
obj.Floats[2] = reader.ReadFloat();
if (structSize > 20)
{
var props = new List<string>();
for (int o =0; o < (structSize-20)/4; o++)
{
int propStringOffset = reader.ReadInt32();
if (propStringOffset == 0 && o == (structSize - 20) / 4 - 1)
{
// There is always a null at the end of the array
break;
}
props.Add(GetString(reader, stringOffset + propStringOffset));
}
obj.Properties = props;
}
objects.Add(obj);
}
return objects;
}
public void ReadDirectory()
{
var reader = new DataReader(FileData, _startOffset, _dataLen);
int numEntries = reader.ReadInt32();
for (int entry = 0; entry < numEntries; ++entry) {
if (EngineVersion.ReturnToArms == _engineVersion)
{
int stringOffset = reader.ReadInt32();
int dataOffset = reader.ReadInt32();
int dataLength = reader.ReadInt32();
var tempOffset = reader.Offset;
reader.SetOffset(stringOffset);
var name = reader.ReadZString();
reader.SetOffset(tempOffset);
var info = new EntryInfo() { Name = name, StartOffset = dataOffset + _startOffset, Length = dataLength };
Directory[name] = info;
}
else
{
int headerOffset = _startOffset + 4 + entry * 64;
String subfileName = DataUtil.GetString(FileData, headerOffset);
int subOffset = BitConverter.ToInt32(FileData, headerOffset + 56);
int subLen = BitConverter.ToInt32(FileData, headerOffset + 60);
var info = new EntryInfo()
{Name = subfileName, StartOffset = subOffset + _startOffset, Length = subLen};
Directory[subfileName] = info;
}
}
}
Entry readEntry(DataReader reader)
{
Child child1 = readChild(reader);
if (child1 == null)
{
return null;
}
Entry entry = new Entry();
entry.children[0] = child1;
entry.children[1] = readChild(reader);
entry.children[2] = readChild(reader);
entry.children[3] = readChild(reader);
return entry;
}
public WorldData Decode(EngineVersion engineVersion, WorldTexFile texFile, ILogger log, byte[] data, int startOffset, int length)
{
WorldData worldData = new WorldData();
var reader = new DataReader(data, startOffset, length);
int numElements = reader.ReadInt32(); // 0
reader.Skip(12); // Skipping 3 ints
int numCols = reader.ReadInt32(); // x10
int numRows = reader.ReadInt32(); // x14
reader.Skip(12); // Skipping 3 ints // x18 x1c x20
int elementArrayStart = reader.ReadInt32(); // x24
reader.Skip(8); // Skipping 2 ints
int off38Cols = reader.ReadInt32();
int off38Rows = reader.ReadInt32();
int off38 = reader.ReadInt32();
reader.Skip(28);
int texll = reader.ReadInt32();
int texur = reader.ReadInt32();
int texX0 = texll % 100;
int texY0 = texll / 100;
int texX1 = texur % 100;
int texY1 = texur / 100;
reader.Skip(4);
int worldTexOffsetsOffset = reader.ReadInt32();
worldData.textureChunkOffsets = readTextureChunkOffsets(engineVersion, data, startOffset + worldTexOffsetsOffset, texX0, texY0, texX1+1, texY1);
worldData.worldElements = new List<WorldElement>(numElements);
for (int elementIdx = 0; elementIdx < numElements; ++elementIdx)
{
var element = new WorldElement();
if (EngineVersion.ReturnToArms == engineVersion)
{
reader.SetOffset(elementArrayStart + elementIdx * 0x3C);
}
else // Default to Dark Allience version
{
reader.SetOffset(elementArrayStart + elementIdx * 0x38);
}
int vifDataOffset = reader.ReadInt32();
if (EngineVersion.DarkAlliance == engineVersion)
{
int tex2 = reader.ReadInt32();
if (tex2 != 0) {
log.LogLine("Tex2=" + tex2);
}
}
int vifLen = reader.ReadInt32();
log.LogLine("-----------");
log.LogLine("vifdata: " + vifDataOffset + ", " + vifLen);
float x1 = reader.ReadFloat();
float y1 = reader.ReadFloat();
float z1 = reader.ReadFloat();
float x2 = reader.ReadFloat();
float y2 = reader.ReadFloat();
float z2 = reader.ReadFloat();
element.boundingBox = new Rect3D(x1, y1, z1, x2 - x1, y2 - y1, z2 - z1);
log.LogLine("Bounding Box: " + element.boundingBox.ToString());
int textureNum = reader.ReadInt32() / 0x40;
log.LogLine("Texture Num: " + textureNum);
int texCellxy = reader.ReadInt16();
int y = texCellxy / 100;
int x = texCellxy % 100;
if (EngineVersion.ReturnToArms == engineVersion)
{
x += texX0;
y += texY0;
}
if (textureNum != 0)
{
if (EngineVersion.ReturnToArms == engineVersion)
{
element.Texture = texFile.GetBitmapRTA(x, y, textureNum);
}
else
{
element.Texture = texFile.GetBitmap(worldData.textureChunkOffsets[y, x], textureNum);
}
}
if (element.Texture != null)
{
log.LogLine("Found in texture chunk: " + x + ", " + y);
}
var vifLogger = new StringLogger();
int texWidth = 100;
int texHeight = 100;
if (element.Texture != null)
{
texWidth = element.Texture.PixelWidth;
texHeight = element.Texture.PixelHeight;
}
byte nregs = data[startOffset + vifDataOffset + 0x10];
int vifStartOffset = (nregs + 2) * 0x10;
element.VifDataOffset = startOffset + vifDataOffset + vifStartOffset;
element.VifDataLength = vifLen*0x10 - vifStartOffset;
element.model = decodeModel(engineVersion, vifLogger, data, startOffset + vifDataOffset + vifStartOffset, vifLen * 0x10 - vifStartOffset, texWidth, texHeight);
if (EngineVersion.ReturnToArms == engineVersion)
{
int unk = reader.ReadInt16();
log.LogLine("Unknown: " + unk);
}
int posx = reader.ReadInt16();
int posy = reader.ReadInt16();
int posz = reader.ReadInt16();
log.LogLine("Position : " + posx + ", " + posy + ", " + posz);
element.pos = new Vector3D(posx / 16.0, posy / 16.0, posz / 16.0);
if (EngineVersion.ReturnToArms == engineVersion)
{
// Just a guess, maybe wrong.
element.pos = new Vector3D(posx / 16.0, posz / 16.0, posy / 16.0);
}
// I don't think RTA uses this flags scheme. From the data it looks like there are
// 2 shorts (or possibly floats) following.
int flags = reader.ReadInt32();
if ((flags & 0x01) == 0)
{
log.LogLine("Flags : " + HexUtil.formatHexUShort(flags & 0xFFFF));
element.cosAlpha = (flags >> 16) / 32767.0;
element.sinAlpha = reader.ReadInt16() / 32767.0;
log.LogLine("cos alpha : " + element.cosAlpha);
log.LogLine("sin alpha : " + element.sinAlpha);
log.LogLine("alpha(cos, sin): " + Math.Acos(element.cosAlpha) * 180.0 / Math.PI + ", " + Math.Asin(element.sinAlpha) * 180.0 / Math.PI);
element.usesRotFlags = false;
}
else
{
reader.ReadInt16(); // not necessary but makes the code more obvious.
log.LogLine("Flags : " + HexUtil.formatHex(flags));
element.xyzRotFlags = (flags >> 16) & 7;
element.usesRotFlags = true;
log.LogLine("Rot Flags : " + element.xyzRotFlags);
}
element.negYaxis = (flags & 0x40) == 0x40;
if (EngineVersion.ReturnToArms == engineVersion)
{
flags = 0;
element.usesRotFlags = true;
log.LogLine("Forcing flags to 0 until we know the format better");
}
worldData.worldElements.Add(element);
}
return worldData;
}
