/// <summary>
/// Imports the specified Unreal Text file.
/// </summary>
/// <param name="path">The file path.</param>
/// <returns>A <see cref="T3dMap"/> containing the imported map data.</returns>
public T3dMap Import(string path)
{
// create a new map.
T3dMap map = new T3dMap();
// open the file for reading. we use streams for additional performance.
// it's faster than File.ReadAllLines() as that requires two iterations.
using (FileStream stream = new FileStream(path, FileMode.Open))
using (StreamReader reader = new StreamReader(stream))
{
// read all the lines from the file.
bool inActor = false; T3dActor actor = null;
bool inBrush = false; T3dBrush brush = null;
bool inPolygon = false; T3dPolygon polygon = null;
string line;
while (!reader.EndOfStream)
{
line = reader.ReadLine().Trim();
// if we currently parsing an actor:
if (inActor)
{
if (!inBrush)
{
// if we done parsing the actor:
if (line == "End Actor")
{
inActor = false;
continue;
}
// try parsing an actor property.
string key;
object value;
if (TryParseProperty(line, out key, out value))
{
actor.Properties.Add(key, value);
}
// make sure we detect brush declarations:
if (line.StartsWith("Begin Brush"))
{
// read the properties of the brush.
var properties = ParseKeyValuePairs(line);
if (properties.ContainsKey("Name"))
{
// this is a valid brush model that can be parsed further.
inBrush = true;
// create a new brush model and add it to the map.
brush = new T3dBrush(properties["Name"]);
map.BrushModels.Add(brush);
continue;
}
}
}
// we are currently parsing a brush:
else
{
// if we done parsing the brush:
if (line == "End Brush")
{
inBrush = false;
continue;
}
if (!inPolygon)
{
// make sure we detect brush polygon declarations:
if (line.StartsWith("Begin Polygon"))
{
inPolygon = true;
// create a new brush polygon and add it to the brush.
polygon = new T3dPolygon();
brush.Polygons.Add(polygon);
// read the properties of the brush polygon.
var properties = ParseKeyValuePairs(line);
if (properties.ContainsKey("Item"))
{
polygon.Item = properties["Item"];
}
if (properties.ContainsKey("Texture"))
{
polygon.Texture = properties["Texture"];
}
if (properties.ContainsKey("Flags"))
{
polygon.Flags = (T3dPolygonFlags)Int32.Parse(properties["Flags"]);
}
}
}
// we are currently parsing a brush polygon:
else
{
// if we done parsing the brush polygon:
if (line == "End Polygon")
{
inPolygon = false;
continue;
}
if (line.StartsWith("Origin"))
{
polygon.Origin = ParsePolygonVector(line);
}
if (line.StartsWith("Normal"))
{
polygon.Normal = ParsePolygonVector(line);
}
if (line.StartsWith("TextureU"))
{
polygon.TextureU = ParsePolygonVector(line);
}
if (line.StartsWith("TextureV"))
{
polygon.TextureV = ParsePolygonVector(line);
}
if (line.StartsWith("Pan"))
{
int u, v;
ParsePolygonUV(line, out u, out v);
polygon.PanU = u;
polygon.PanV = v;
}
if (line.StartsWith("Vertex"))
{
polygon.Vertices.Add(ParsePolygonVector(line));
}
}
}
}
// if we are looking for another begin declaration:
else
{
// if we are going to parse an actor:
if (line.StartsWith("Begin Actor"))
{
// read the properties of the actor.
var properties = ParseKeyValuePairs(line);
if (properties.ContainsKey("Class") && properties.ContainsKey("Name"))
{
// this is a valid actor that can be parsed further.
inActor = true;
// create a new actor and add it to the map.
actor = new T3dActor(map, properties["Class"], properties["Name"]);
map.Actors.Add(actor);
continue;
}
}
}
}
}
// return the map data.
return(map);
}
/// <summary>
/// Initializes a new instance of the <see cref="T3dActor"/> class.
/// </summary>
/// <param name="class">The class of the actor.</param>
/// <param name="name">The name of the actor.</param>
public T3dActor(T3dMap map, string @class, string name)
{
m_T3dMap = map;
Class = @class;
Name = name;
}