/// <summary>
/// Builds all <see cref="Mesh"/> objects for the <see cref="Entity"/> in <paramref name="instance"/> instance,
/// combines them if necessary using <see cref="settings"/>.meshCombineOptions and adds the meshes to the
/// <see cref="GameObject"/> in <paramref name="instance"/>.
/// </summary>
/// <param name="instance">The <see cref="EntityInstance"/> to build <see cref="Mesh"/>es for.</param>
protected void BuildMesh(EntityInstance instance)
{
int modelNumber = instance.entity.modelNumber;
Model model = bsp.models[modelNumber];
Dictionary <string, List <Mesh> > textureMeshMap = new Dictionary <string, List <Mesh> >();
GameObject gameObject = instance.gameObject;
List <Face> faces = bsp.GetFacesInModel(model);
int i = 0;
for (i = 0; i < faces.Count; ++i)
{
Face face = faces[i];
if (face.numEdges <= 0 && face.numVertices <= 0)
{
continue;
}
int textureIndex = bsp.GetTextureIndex(face);
string textureName = "";
if (textureIndex >= 0)
{
LibBSP.Texture texture = bsp.textures[textureIndex];
textureName = texture.name;
if (!textureMeshMap.ContainsKey(textureName) || textureMeshMap[textureName] == null)
{
textureMeshMap[textureName] = new List <Mesh>();
}
textureMeshMap[textureName].Add(CreateFaceMesh(face, textureName));
}
}
if (modelNumber == 0)
{
if (bsp.lodTerrains != null)
{
foreach (LODTerrain lodTerrain in bsp.lodTerrains)
{
if (lodTerrain.texture >= 0)
{
LibBSP.Texture texture = bsp.textures[lodTerrain.texture];
string textureName = texture.name;
if (!textureMeshMap.ContainsKey(textureName) || textureMeshMap[textureName] == null)
{
textureMeshMap[textureName] = new List <Mesh>();
}
textureMeshMap[textureName].Add(CreateLoDTerrainMesh(lodTerrain, textureName));
}
}
}
}
if (settings.meshCombineOptions != MeshCombineOptions.None)
{
Mesh[] textureMeshes = new Mesh[textureMeshMap.Count];
Material[] materials = new Material[textureMeshes.Length];
i = 0;
foreach (KeyValuePair <string, List <Mesh> > pair in textureMeshMap)
{
textureMeshes[i] = MeshUtils.CombineAllMeshes(pair.Value.ToArray(), true, false);
if (materialDirectory.ContainsKey(pair.Key))
{
materials[i] = materialDirectory[pair.Key];
}
if (settings.meshCombineOptions == MeshCombineOptions.PerMaterial)
{
GameObject textureGameObject = new GameObject(pair.Key);
textureGameObject.transform.parent = gameObject.transform;
textureGameObject.transform.localPosition = Vector3.zero;
if (textureMeshes[i].normals.Length == 0 || textureMeshes[i].normals[0] == Vector3.zero)
{
textureMeshes[i].RecalculateNormals();
}
textureMeshes[i].AddMeshToGameObject(new Material[] { materials[i] }, textureGameObject);
#if UNITY_EDITOR
if (!IsRuntime && (settings.assetSavingOptions & AssetSavingOptions.Meshes) > 0)
{
string meshPath = Path.Combine(Path.Combine(Path.Combine("Assets", settings.meshPath), bsp.MapNameNoExtension), "mesh_" + textureMeshes[i].GetHashCode() + ".asset").Replace('\\', '/');
Directory.CreateDirectory(Path.GetDirectoryName(meshPath));
AssetDatabase.CreateAsset(textureMeshes[i], meshPath);
}
#endif
}
++i;
}
if (settings.meshCombineOptions != MeshCombineOptions.PerMaterial)
{
Mesh mesh = MeshUtils.CombineAllMeshes(textureMeshes, false, false);
mesh.TransformVertices(gameObject.transform.localToWorldMatrix);
if (mesh.normals.Length == 0 || mesh.normals[0] == Vector3.zero)
{
mesh.RecalculateNormals();
}
mesh.AddMeshToGameObject(materials, gameObject);
#if UNITY_EDITOR
if (!IsRuntime && (settings.assetSavingOptions & AssetSavingOptions.Meshes) > 0)
{
string meshPath = Path.Combine(Path.Combine(Path.Combine("Assets", settings.meshPath), bsp.MapNameNoExtension), "mesh_" + mesh.GetHashCode() + ".asset").Replace('\\', '/');
Directory.CreateDirectory(Path.GetDirectoryName(meshPath));
AssetDatabase.CreateAsset(mesh, meshPath);
}
#endif
}
}
else
{
i = 0;
foreach (KeyValuePair <string, List <Mesh> > pair in textureMeshMap)
{
GameObject textureGameObject = new GameObject(pair.Key);
textureGameObject.transform.parent = gameObject.transform;
textureGameObject.transform.localPosition = Vector3.zero;
Material material = materialDirectory[pair.Key];
foreach (Mesh mesh in pair.Value)
{
GameObject faceGameObject = new GameObject("Face");
faceGameObject.transform.parent = textureGameObject.transform;
faceGameObject.transform.localPosition = Vector3.zero;
if (mesh.normals.Length == 0 || mesh.normals[0] == Vector3.zero)
{
mesh.RecalculateNormals();
}
mesh.AddMeshToGameObject(new Material[] { material }, faceGameObject);
#if UNITY_EDITOR
if (!IsRuntime && (settings.assetSavingOptions & AssetSavingOptions.Meshes) > 0)
{
string meshPath = Path.Combine(Path.Combine(Path.Combine("Assets", settings.meshPath), bsp.MapNameNoExtension), "mesh_" + mesh.GetHashCode() + ".asset").Replace('\\', '/');
Directory.CreateDirectory(Path.GetDirectoryName(meshPath));
AssetDatabase.CreateAsset(mesh, meshPath);
}
#endif
}
++i;
}
}
}