public static OTBNode ParseOTBTree(byte[] serializedTreeData)
{
var treeBuilder = new OTBTreeBuilder(serializedTreeData);
for (int i = 0; i < serializedTreeData.Length; i++)
{
var markupByte = (OTBMarkupByte)serializedTreeData[i];
switch (markupByte)
{
case OTBMarkupByte.Escape:
i++;
break;
case OTBMarkupByte.Start:
treeBuilder.AddNodeBegin(i + 1, OTBNodeType.NotSetYet);
break;
case OTBMarkupByte.End:
treeBuilder.AddNodeEnd(i);
break;
}
}
return(treeBuilder.BuildTree());
}
public static World ParseWorld(byte[] serializedWorldData)
{
if (serializedWorldData.Length < MinimumWorldSize)
{
throw new TFSWorldLoadingException();
}
//var otbTree = ExtractOTBTree(serializedWorldData);
var otbTree = new OTBTreeBuilder(serializedWorldData).BuildTree();
var world = new World();
ParseOTBTreeRootNode(otbTree, world);
Parse(otbTree.Children[0], world);
throw new NotImplementedException();
}
private static OTBNode ExtractOTBTree(byte[] serializedWorldData)
{
var stream = new ReadOnlyMemoryStream(serializedWorldData);
// Skipping the first 4 bytes coz they are used to store a... identifier?
stream.Skip(IdentifierLength);
var treeBuilder = new OTBTreeBuilder(serializedWorldData);
while (!stream.IsOver)
{
var currentMark = (OTBMarkupByte)stream.ReadByte();
if (currentMark < OTBMarkupByte.Escape)
{
/// Since <see cref="OTBMarkupByte"/> can only have values Escape (0xFD), Start (0xFE) and
/// End (0xFF), if currentMark < Escape, then it's just prop data
/// and we can safely skip it.
continue;
}
var nodeType = (OTBNodeType)stream.ReadByte();
switch (currentMark)
{
case OTBMarkupByte.Start:
treeBuilder.AddNodeBegin(
start: stream.Position,
type: nodeType);
break;
case OTBMarkupByte.End:
treeBuilder.AddNodeEnd(stream.Position);
break;
case OTBMarkupByte.Escape:
stream.Skip();
break;
default:
throw new InvalidOperationException();
}
}
return(treeBuilder.BuildTree());
}
private static void LoadItemsFromOTB(string path)
{
var data = FileManager.ReadFileToByteArray(path);
var tree = new OTBTreeBuilder(data).BuildTree();
// SKIP to nodes
_items = new List <IBaseItemPrototype>(30000);
foreach (var itemNode in tree.Children)
{
var itemStream = new ReadOnlyMemoryStream(itemNode.Data.Span);
var flags = itemStream.ReadUInt32();
ushort serverId = 0;
ushort clientId = 0;
ushort wareId = 0;
ushort speed = 0;
byte lightLevel = 0;
byte lightColor = 0;
byte topOrder = 0;
var toSkip = 0;
bool escaped = false;
while (!itemStream.IsOver)
{
var attr = itemStream.ReadByte();
var isEscape = (OTBMarkupByte)attr == OTBMarkupByte.Escape;
if (toSkip > 0)
{
if (isEscape)
{
if (escaped)
{
toSkip++;
escaped = false;
}
else
{
toSkip--;
escaped = true;
}
}
else
{
toSkip--;
}
if (toSkip == 0)
{
break;
}
continue;
}
var dataSize = itemStream.ReadUInt16();
switch (attr)
{
case 0x10: // ServerID 0x10 = 16
serverId = itemStream.ReadUInt16();
break;
case 0x11: // ClientID 0x11 = 17
clientId = itemStream.ReadUInt16();
break;
case 0x14: // Speed 0x14 = 20
speed = itemStream.ReadUInt16();
break;
case 0x2A: // LightBlock 0x2A = 42
lightLevel = (byte)itemStream.ReadUInt16();
lightColor = (byte)itemStream.ReadUInt16();
break;
case 0x2B: // TopOrder 0x2B = 43
topOrder = itemStream.ReadByte();
break;
case 0x2D: // WareID 0x2D = 45
wareId = (byte)itemStream.ReadUInt16();
break;
default:
toSkip = dataSize;
break;
}
}
var blockSolid = HasFlag(flags, 1 << 0);
var blockProjectile = HasFlag(flags, 1 << 1);
var blockPathFind = HasFlag(flags, 1 << 2);
//var hasElevation = HasFlag(flags, 1 << 3); // Irrelevant
var isUsable = HasFlag(flags, 1 << 4);
var isPickupable = HasFlag(flags, 1 << 5);
var isMoveable = HasFlag(flags, 1 << 6);
//var isStackable = HasFlag(flags, 1 << 7);
var alwaysOnTop = HasFlag(flags, 1 << 13); // Maybe irrelevant
var isReadable = HasFlag(flags, 1 << 14);
var isRotatable = HasFlag(flags, 1 << 15);
var isHangable = HasFlag(flags, 1 << 16);
var isVertical = HasFlag(flags, 1 << 17);
var isHorizontal = HasFlag(flags, 1 << 18);
var allowDistRead = HasFlag(flags, 1 << 20);
var lookTrough = HasFlag(flags, 1 << 21);
var isAnimation = HasFlag(flags, 1 << 22); // Maybe irrelevant too?
IBaseItemPrototype item = null;
if (!isPickupable) // A world item
{
item = new WorldItemPrototype(serverId, clientId, isUsable,
isMoveable, blockSolid, lookTrough, blockPathFind, blockProjectile);
}
else // An item
{
item = new ItemPrototype(serverId, clientId, isUsable);
}
if (item != null)
{
_items.Add(item);
}
}
_items.TrimExcess();
}
