public MemoryIO GetMetaBlock(out long position)
{
//Prepare
MemoryIO meta = null;
//Open?
bool open = io.Open;
if (!open)
{
io.OpenIO();
}
//Get Position
position = header.IndexOffset + header.IndexLength;
//Read
io.Position = position;
meta = new MemoryIO(io.In.ReadBytes(header.MetaLength));
//Close?
if (!open)
{
io.CloseIO();
}
//Return
return(meta);
}
/// <summary>
/// Reloads the tags contained in the map using the <see cref="HaloIO"/> stream data.
/// </summary>
/// <param name="io">The <see cref="HaloIO"/> instance containing a map file.</param>
public void LoadTagsInfo(HaloIO io)
{
//Prepare
tags = new TAGHIERARCHY[index.TagCount];
tagAddresses = new int[index.TagCount];
//Open?
bool open = io.Open;
if (!open)
{
io.OpenIO();
}
//Loop
for (int i = 0; i < index.TagCount; i++)
{
tagAddresses[i] = header.IndexOffset + INDEX.Length + (i * TAGHIERARCHY.Length);
io.Position = tagAddresses[i];
tags[i] = io.In.ReadStructure <TAGHIERARCHY>();
}
//Close?
if (!open)
{
io.CloseIO();
}
}
/// <summary>
/// Reloads the file names contained in the map using the <see cref="HaloIO"/> stream data.
/// </summary>
/// <param name="io">The <see cref="HaloIO"/> instance containing a map file.</param>
public void LoadFileNamesInfo(HaloIO io)
{
//Prepare
fileIndices = new int[header.FileCount];
fileList = new string[header.FileCount];
//Open?
bool open = io.Open;
if (!open)
{
io.OpenIO();
}
//Read Files Index
io.Position = header.FilesIndex;
for (int i = 0; i < header.FileCount; i++)
{
fileIndices[i] = io.In.ReadInt32();
}
//Read File List
for (int i = 0; i < header.FileCount; i++)
{
io.Position = fileIndices[i] + header.FilesOffset;
fileList[i] = io.In.ReadUTF8NullTerminated();
}
//Close?
if (!open)
{
io.CloseIO();
}
}
/// <summary>
/// Loads a Halo 2 Map file using the specified <see cref="HaloIO"/> instance.
/// </summary>
/// <param name="io">The <see cref="HaloIO"/> used to access the map file.</param>
private void LoadMap(HaloIO io)
{
//Open
io.OpenIO();
//Read Header
io.Position = 0;
header = io.In.ReadStructure <HEADER>();
//Prepare Index Table Header
io.Position = header.IndexOffset;
index = io.In.ReadStructure <INDEX>();
//Load File Names
LoadFileNamesInfo(io);
//Load Tag Objects
LoadTagsInfo(io);
//Load Index Objects
LoadObjectInfo(io);
//Load Strings
LoadStringsInfo(io);
//Fix SBSPs and LTMPs
FixSpecialEntries(io);
//Close Map
io.CloseIO();
}
/// <summary>
/// Reloads the strings contained in the map using the <see cref="HaloIO"/> stream data.
/// </summary>
/// <param name="io">The <see cref="HaloIO"/> instance containing a map file.</param>
public void LoadStringsInfo(HaloIO io)
{
//Prepare
stringIndices = new int[header.StringCount];
stringIDs = new string[header.StringCount];
string128s = new string[header.StringCount];
//Open?
bool open = io.Open;
if (!open)
{
io.OpenIO();
}
//Read String Index
io.Position = header.StringsIndexOffset;
for (int i = 0; i < header.StringCount; i++)
{
stringIndices[i] = io.In.ReadInt32();
}
//Read String IDs
for (int i = 0; i < header.StringCount; i++)
{
io.Position = stringIndices[i] + header.StringsOffset;
stringIDs[i] = io.In.ReadUTF8NullTerminated();
}
//Read String 128s
for (int i = 0; i < header.StringCount; i++)
{
io.Position = (128 * i) + header.Strings128Offset;
string128s[i] = io.In.ReadUTF8(128).Replace("/0", string.Empty);
}
//Close?
if (!open)
{
io.CloseIO();
}
}
/// <summary>
/// Fixes any special index entries in the map using <see cref="HaloIO"/> stream data.
/// </summary>
/// <param name="io">The <see cref="HaloIO"/> instance containing a map file.</param>
public void FixSpecialEntries(HaloIO io)
{
//Open?
bool open = io.Open;
if (!open)
{
io.OpenIO();
}
//Prepare
uint sbspOffset;
int sbspLength, sbspIdIndex, sbspId;
int ltmpOffset, ltmpLength, ltmpId;
uint bspMagic;
//Obtain SBSP and LTMP data
io.Position = scenario.Offset + 528;
TAGBLOCK bsp = io.In.ReadUInt64();
for (int i = 0; i < bsp.Count; i++)
{
//Go to Position
io.Position = bsp.Translate(magic) + (i * 68);
//Get SBSP Data
sbspOffset = io.In.ReadUInt32();
sbspLength = io.In.ReadInt32();
bspMagic = io.In.ReadUInt32() - sbspOffset;
io.Position += 8;
sbspId = io.In.ReadInt32();
//Set SBSP Entry
if (sbspId != -1)
{
sbspIdIndex = GetIndexByIdent(sbspId);
entries[sbspIdIndex] = IndexEntry.Create(this, entries[sbspIdIndex].FileName, entries[sbspIdIndex].Class,
entries[sbspIdIndex].Ident, sbspOffset + bspMagic, (int)bspMagic, (uint)sbspLength);
}
//Get LTMP Ident
io.Position = bsp.Translate(magic) + (i * 68) + 28;
ltmpId = io.In.ReadInt32();
io.Position = sbspOffset + 8;
//Get LTMP Data
ltmpOffset = 0;
ltmpLength = 0;
if (sbspOffset > 0)
{
ltmpOffset = (int)(io.In.ReadInt32() - bspMagic);
ltmpLength = (int)(sbspLength + sbspOffset - ltmpOffset);
}
//Set LTMP Entry
if (ltmpId != -1)
{
int LtmpIdIndex = GetIndexByIdent(ltmpId);
entries[LtmpIdIndex] = IndexEntry.Create(this, entries[LtmpIdIndex].FileName, entries[LtmpIdIndex].Class,
entries[LtmpIdIndex].Ident, (uint)ltmpOffset + bspMagic, (int)bspMagic, (uint)ltmpLength);
}
}
//Close?
if (!open)
{
io.CloseIO();
}
}
/// <summary>
/// Reloads the objects contained in the map using the <see cref="HaloIO"/> stream data.
/// </summary>
/// <param name="io">The <see cref="HaloIO"/> instance containing a map file.</param>
public void LoadObjectInfo(HaloIO io)
{
//Prepare
objectAddresses = new int[index.ObjectCount];
objects = new OBJECT[index.ObjectCount];
entries = new IndexEntry[index.ObjectCount];
//Open?
bool open = io.Open;
if (!open)
{
io.OpenIO();
}
//Prepare
StringBuilder fileName = null;
//Determine Magic
io.Position = ObjectStart + 8; //Goto Globals Offset
magic = io.In.ReadInt32() - (header.IndexOffset + header.IndexLength);
//Loop
for (int i = 0; i < index.ObjectCount; i++)
{
//Get Address
objectAddresses[i] = ObjectStart + (i * 16);
io.Position = objectAddresses[i];
//Read
objects[i] = io.In.ReadStructure <OBJECT>();
//Get File Name
fileName = new StringBuilder();
if (header.FileCount > i)
{
fileName.Append(fileList[i]);
}
else
{
fileName.AppendFormat("Unknown ({0})", i);
}
//Create Index Entry
if (objects[i].Offset != 0)
{
entries[i] = new IndexEntry(this, objects[i], magic, fileName.ToString());
}
else
{
entries[i] = new IndexEntry(this, objects[i], fileName.ToString());
}
}
//Get Scenario and Globals
scenario = GetEntryByIdent(index.ScenarioID);
globals = GetEntryByIdent(index.GlobalsID);
//Close?
if (!open)
{
IO.CloseIO();
}
}