public BrushModel(Map map, ResourceManager resourceManager)
{
this.map = map;
this.resourceManager = resourceManager;
var rootNode = map.Lumps.GetNodes()[0];
Read(rootNode);
var meshParts = new MeshPart[indicesByTexture.Count];
var modelMaterials = new SourceMaterial[indicesByTexture.Count];
var i = 0;
foreach (var(materialName, indices) in indicesByTexture)
{
var indexPositions = new Dictionary <uint, uint>();
if (indices.Count % 3 != 0)
{
throw new Exception("Broken triangles");
}
meshParts[i] = new MeshPart {
Indices = indices.ToArray()
};
modelMaterials[i] = resourceManager.Get <SourceMaterial>(materialName);
i++;
}
Mesh = new Mesh
{
Vertices = vertices.ToArray(),
Parts = meshParts
};
Materials = modelMaterials;
}
public T Get <T>(string name) where T : Resource
{
if (name == null)
{
return(null);
}
//Sanitize resource string
name = name.Replace('\\', '/').Trim().ToLower();
if (!fileTypes.ContainsKey(typeof(T)))
{
throw new ArgumentException("Unsupported resource type");
}
var nameWithType = name.ToLower();
var path = paths[typeof(T)];
var fileType = fileTypes[typeof(T)];
if (!nameWithType.StartsWith(path, StringComparison.Ordinal))
{
nameWithType = path + nameWithType;
}
if (!nameWithType.EndsWith(fileType, StringComparison.Ordinal))
{
nameWithType = nameWithType + fileType;
}
if (!resources.TryGetValue(nameWithType, out Resource resource))
{
var data = ReadResourceFromDisk(nameWithType);
if (data != null)
{
using (var reader = new BinaryReader(new MemoryStream(data)))
{
resource = (T)Activator.CreateInstance(typeof(T), reader, data.Length);
}
}
else
{
if (typeof(T) == typeof(SourceMaterial))
{
//Material not found => try to load texture and create simple material
var texture = Get <SourceTexture>(name);
if (texture == null)
{
return(null);
}
resource = new SourceMaterial(name);
}
else if (typeof(T) == typeof(SourceMeshStrip))
{
return(Get <T>(name + ".dx90"));
}
else
{
return(null);
}
}
resources[nameWithType] = resource;
}
if (!(resource is T))
{
return(null);
}
return((T)resource);
}
#pragma warning disable RECS0018 // Comparison of floating point numbers with equality operator
private void Read(Leaf leaf)
{
var bspVertices = map.Lumps.GetVertices();
var leafFaces = map.Lumps.GetLeafFaces();
var faces = map.Lumps.GetFaces();
var edges = map.Lumps.GetEdges();
var surfEdges = map.Lumps.GetSurfaceEdges();
var dispInfos = map.Lumps.GetDisplacementInfos();
for (var leafFaceIndex = leaf.FirstLeafFace; leafFaceIndex < leaf.FirstLeafFace + leaf.LeafFacesCount; leafFaceIndex++)
{
var faceIndex = leafFaces[leafFaceIndex];
var face = faces[faceIndex];
var texInfo = map.Lumps.GetTextureInfo()[face.TextureInfo];
var texData = map.Lumps.GetTextureData()[texInfo.TextureData];
var textureOffset = map.Lumps.GetTextureDataStringTable()[texData.NameStringTableId];
var textureName = map.Lumps.GetTextureDataString()[textureOffset];
uint rootVertex = 0;
SourceMaterial material = resourceManager.Get <SourceMaterial>(textureName);
SourceTexture texture = resourceManager.Get <SourceTexture>(material?.BaseTextureName);
float texWidth = texData.Width;
float texHeight = texData.Height;
if (texture != null)
{
if (texture.Header.Width != texData.Width || texture.Header.Height != texData.Height)
{
texWidth = texture.Header.Width;
texHeight = texture.Header.Height;
}
}
var faceVertices = new Dictionary <uint, uint>(); //Just to make sure that there's no duplicates
for (var surfEdgeIndex = face.FirstEdge; surfEdgeIndex < face.FirstEdge + face.EdgesCount; surfEdgeIndex++)
{
var edgeIndex = surfEdges[surfEdgeIndex];
var edge = edges[Math.Abs(edgeIndex)];
//Push the two vertices of the first edge
if (surfEdgeIndex == face.FirstEdge)
{
if (!faceVertices.ContainsKey(edge.VertexIndex[edgeIndex > 0 ? 0 : 1]))
{
rootVertex = edge.VertexIndex[edgeIndex > 0 ? 0 : 1];
var position = bspVertices[rootVertex];
var vertex = new Vertex
{
Position = position,
TextureCoord = CalculateUV(position, texInfo.TextureVecsS, texInfo.TextureVecsT, texWidth, texHeight)
};
faceVertices.Add(rootVertex, (uint)vertices.Count);
vertices.Add(vertex);
}
continue;
}
//Edge must not be connected to the root vertex
if (edge.VertexIndex[0] == rootVertex || edge.VertexIndex[1] == rootVertex)
{
continue;
}
//Edge is on opposite side of the first edge => push the
for (var i = 0; i < 2; i++)
{
if (!faceVertices.ContainsKey(edge.VertexIndex[i]))
{
var position = bspVertices[edge.VertexIndex[i]];
var vertex = new Vertex
{
Position = position,
TextureCoord = CalculateUV(position, texInfo.TextureVecsS, texInfo.TextureVecsT, texWidth, texHeight)
};
faceVertices.Add(edge.VertexIndex[i], (uint)vertices.Count);
vertices.Add(vertex);
}
}
var indices = GetIndices(textureName);
indices.Add(faceVertices[rootVertex]);
if (edgeIndex < 0)
{
indices.Add(faceVertices[edge.VertexIndex[1]]);
indices.Add(faceVertices[edge.VertexIndex[0]]);
}
else
{
indices.Add(faceVertices[edge.VertexIndex[0]]);
indices.Add(faceVertices[edge.VertexIndex[1]]);
}
}
if (face.DisplacementInfo != -1)
{
var dispInfo = dispInfos[face.DisplacementInfo];
Read(dispInfo, texInfo);
}
}
}
