/// <summary>
/// compares to faces
/// </summary>
/// <param name="obj">to compare with</param>
/// <returns></returns>
public int CompareTo(Object obj)
{
QuakeFace other = (QuakeFace)obj;
if (other.LightmapID == LightmapID)
{
return(TextureID - other.TextureID);
}
else
{
return(LightmapID - other.LightmapID);
}
}
/// <summary>
/// loads a quake3 level from a stream
/// </summary>
/// <param name="stream">stream to load from</param>
/// <returns>level as a mesh</returns>
public Mesh Load(Stream stream)
{
Mesh mesh = new Mesh();
this.stream = stream;
// get header and check if it is ok
QuakeHeader header = (QuakeHeader)RawSerializer.Deserialize(stream, typeof(QuakeHeader));
if (header.ID != 1347633737 || header.Version != 0x2e)
{
return(null);
}
// get locations of lumps
locations = RawSerializer.DeserializeArray(stream, typeof(LumpLocation), (int)QuakeLumps.LumpNumber);
// get lumps
IList quakeVertices = LoadLump(QuakeLumps.Vertices, typeof(QuakeVertex));
IList quakeFaces = LoadLump(QuakeLumps.Faces, typeof(QuakeFace));
IList quakeTextures = LoadLump(QuakeLumps.Textures, typeof(QuakeTexture));
IList quakeLightMaps = LoadLump(QuakeLumps.Lightmaps, typeof(QuakeLightMap));
// Load all texture images and put into array
IList textures = LoadTextures(quakeTextures);
// Load lightMaps, create texture and put into array
IList lightMaps = LoadLightMaps(quakeLightMaps);
// create list from vertices
VertexUnit vertexUnit = new VertexUnit(VertexFormat.PositionTexture2, quakeVertices.Count);
PositionStream pos = (PositionStream)vertexUnit[typeof(PositionStream)];
TextureStream texStream = (TextureStream)vertexUnit[typeof(TextureStream)];
TextureStream light = (TextureStream)vertexUnit[typeof(TextureStream), 1];
int i = 0;
foreach (QuakeVertex v in quakeVertices)
{
pos[i] = new Math.Vector3(v.Position[0], v.Position[2], -v.Position[1]);
texStream[i] = new Math.Vector2(v.TextureCoord[0], v.TextureCoord[1]);
light[i] = new Math.Vector2(v.LightmapCoord[0], v.LightmapCoord[1]);
i++;
}
// presort faces
Array.Sort(((Array)quakeFaces));
// create mesh
int oldLightMap = ((QuakeFace)quakeFaces[0]).LightmapID;
int oldTexture = ((QuakeFace)quakeFaces[0]).TextureID;
ArrayList indices = new ArrayList();
for (i = 0; i < quakeFaces.Count; ++i)
{
QuakeFace qf = (QuakeFace)quakeFaces[i];
if (qf.Type == 1)
{
if (qf.TextureID != oldTexture || qf.LightmapID != oldLightMap)
{
mesh.SubSets.Add(new SubSet(vertexUnit, IndexStream.Create(indices, vertexUnit.Size)));
Textures texs = new Textures("color", (ITexture)textures[oldTexture]);
if (oldLightMap == -1)
{
texs["lightMap"] = null;
}
else
{
texs["lightMap"] = (ITexture)lightMaps[oldLightMap];
}
mesh.Textures.Add(texs);
indices.Clear();
}
// add indices => convert from fan to list
for (int j = 2; j < qf.NumOfVerts; j++)
{
indices.Add(qf.VertexIndex);
indices.Add(qf.VertexIndex + j - 1);
indices.Add(qf.VertexIndex + j);
}
oldTexture = qf.TextureID;
oldLightMap = qf.LightmapID;
}
}
return(mesh);
}
