/// <summary>
/// Loads Terrain from File
/// </summary>
/// <param name="path">The path.</param>
/// <returns></returns>
/// <exception cref="ArgumentException">Path given is not valid</exception>
/// <exception cref="EndOfDataException">Unexpected end of Data</exception>
/// <exception cref="FileNotFoundException">File could not be found</exception>
/// <exception cref="InsufficientPermissionsException">Insufficient Permissions</exception>
/// <exception cref="IOException">Read / Write Error</exception>
public static TER LoadFromFile(string path)
{
ChunkStream stream = null;
try {
stream = new ChunkStream(path, FileMode.Open, FileAccess.Read);
} catch (ArgumentException ex) {
Log.Add("Path given is not valid!", LogType.Error);
throw new ArgumentException("Path given is not valid!", ex);
} catch (NotSupportedException ex) {
Log.Add("Path given is not valid!", LogType.Error);
throw new ArgumentException("Path given is not valid!", ex);
} catch (PathTooLongException ex) {
Log.Add("Path given is not valid!", LogType.Error);
throw new ArgumentException("Path given is not valid!", ex);
} catch (UnauthorizedAccessException ex) {
Log.Add("Insufficient Permissions!", LogType.Error);
throw new InsufficientPermissionsException("Insufficient Permissions!", ex);
} catch (SecurityException ex) {
Log.Add("Insufficient Permissions!", LogType.Error);
throw new InsufficientPermissionsException("Insufficient Permissions!", ex);
}
TER terrain = new TER();
if (!stream.ReadString(4).Equals("TERR"))
{
throw new InvalidChunkException("Not a valid Terrain File: " + path);
}
switch (stream.ReadInt32())
{
case 21:
terrain.Version = TerrainVersion.SWBF1;
break;
case 22:
terrain.Version = TerrainVersion.SWBF2;
break;
default:
Log.Add("Unknown Terrain Version found!", LogType.Warning);
terrain.Version = TerrainVersion.Unknown;
break;
}
//Terrain Extent (From Position, To Position);
terrain.Extent.FromX = stream.ReadInt16();
terrain.Extent.FromY = stream.ReadInt16();
terrain.Extent.ToX = stream.ReadInt16();
terrain.Extent.ToY = stream.ReadInt16();
//Int32, unknown purpose
stream.SkipBytes(4);
//16 floats follow, describing the Tile Range of each Texture Layer
for (int i = 0; i < terrain.Layers.Length; i++)
{
//tile range is stored as reciprocal (1/X), e.g. 0.03125 for actually 32
//to get the true tile size, we have ge the reciprocal again
// (1 / 32) = 0.03125 (1 / 0.03125) = 32
terrain.Layers[i].TileRange = 1 / stream.ReadFloat();
}
//16 bytes follow, describing mapping type for each layer
for (int i = 0; i < terrain.Layers.Length; i++)
{
terrain.Layers[i].MappingType = stream.ReadByte();
}
//unknown purpose of bytes
stream.SkipBytes(64);
terrain.HeightMultiplier = stream.ReadFloat();
terrain.GridScale = stream.ReadFloat();
//unknown int32
stream.SkipBytes(4);
//Full Map Size (e.g. 256 for a 256x256 Map)
terrain.GridSize = stream.ReadInt32();
//unknown int32
stream.SkipBytes(4);
//SWBF2 Versions have a byte exactly on this point. purpose unknown
if (terrain.Version == TerrainVersion.SWBF2)
{
stream.SkipBytes(1);
}
//16 Texture Layers follow (total length of 1024)
//char[32] Diffuse texture name.
//char[32] Detail texture name.
for (int i = 0; i < terrain.Layers.Length; i++)
{
terrain.Layers[i].DiffuseTexture = stream.ReadString(32).Trim();
terrain.Layers[i].DetailTexture = stream.ReadString(32).Trim();
}
//skip water layers
stream.SkipBytes(1088);
//unknown bytes
stream.SkipBytes(524);
//Terrain Height Data
Log.Add("Size: " + terrain.GridSize, LogType.Info);
terrain.RawHeights = new short[terrain.GridSize, terrain.GridSize];
for (int x = 0; x < terrain.GridSize; x++)
{
for (int y = 0; y < terrain.GridSize; y++)
{
terrain.RawHeights[x, y] = stream.ReadInt16();
}
}
stream.Close();
return(terrain);
}
