M2MeshFile loader 0.2

-Texturing (one layer only)
-alpha transparency and backface culling flags handled
-various fixes

src/Client/GUI/CM2MeshFileLoader.cpp

@@ -1,12 +1,14 @@
 #include <iostream>
 #include "CM2MeshFileLoader.h"
 
+
+
 namespace irr
 {
 namespace scene
 {
 
-        CM2MeshFileLoader::CM2MeshFileLoader(IrrlichtDevice* device):Device(device)
+CM2MeshFileLoader::CM2MeshFileLoader(IrrlichtDevice* device, c8* basedir):Device(device), Basedir(basedir)
 {
 
 }
@@ -42,13 +44,15 @@ namespace irr
      else logger->log(L"header okay",ELL_INFORMATION);
 //Name -> not very important I think, but save it nontheless;
 std::cout << "Name offset:" << header.nameOfs << "Name length:" << header.nameLength << "\n";
+//M2MeshName.clear();
+//M2MeshName.reserve(header.nameLength);
 file->seek(header.nameOfs);
-            file->read(&M2MeshName[0],header.nameLength);
+//    file->read(&M2MeshName[0],header.nameLength);
-            std::cout << "Read name:"<<M2MeshName.c_str()<<"\n";
+//std::cout << "Read name:"<<M2MeshName.c_str()<<"Size: "<< M2MeshName.size() <<"|"<<M2MeshName[0]<< "\n";
 //logger->log("Mesh Name",M2MeshName.c_str(),ELL_INFORMATION);
 //Now we load all kinds of data from the file
 
-            //Vertices
+//Vertices.  Global data
 if(!M2MVertices.empty())
     M2MVertices.clear();
 
@@ -62,7 +66,7 @@ namespace irr
 }
 std::cout << "Read "<<M2MVertices.size()<<"/"<<header.nVertices<<" Vertices\n";
 
-            //Views == Sets of vertices. Usage yet unknown
+//Views == Sets of vertices. Usage yet unknown. Global data
 if(M2MViews.size()>0)
     M2MViews.clear();
 ModelView tempM2MView;
@@ -75,8 +79,9 @@ namespace irr
 std::cout << "Read "<<M2MViews.size()<<"/"<<header.nViews<<" Views\n";
 
 logger->log("Using View 0 for all further operations",ELL_INFORMATION);
+std::cout<<"This View has "<<M2MViews[0].nSub<<" Submeshes\n";
 
-            //Vertex indices of a specific view.
+//Vertex indices of a specific view.Local to View 0
 if(M2MIndices.size()>0)
     M2MIndices.clear();
 
@@ -90,7 +95,7 @@ namespace irr
 std::cout << "Read "<<M2MIndices.size()<<"/"<<M2MViews[0].nIndex<<" Indices\n";
 
 
-            //Triangles. Data Points point to the Vertex Indices, not the vertices themself. 3 Points = 1 Triangle
+//Triangles. Data Points point to the Vertex Indices, not the vertices themself. 3 Points = 1 Triangle, Local to View 0
 if(M2MTriangles.size()>0)
     M2MTriangles.clear();
 
@@ -103,15 +108,101 @@ namespace irr
 }
 std::cout << "Read "<<M2MTriangles.size()<<"/"<<M2MViews[0].nTris<<" Triangle Indices\n";
 
-            //Texture Lookup table.
+//Submeshes, Local to View 0
+if(M2MSubmeshes.size()>0)
+    M2MSubmeshes.clear();
+
+ModelViewSubmesh tempM2Submesh;
+file->seek(M2MViews[0].ofsSub);
+for(u32 i =0;i<M2MViews[0].nSub;i++)
+{
+    file->read(&tempM2Submesh,sizeof(ModelViewSubmesh));
+    M2MSubmeshes.push_back(tempM2Submesh);
+//    std::cout<< "Submesh " <<i<<" ID "<<tempM2Submesh.meshpartId<<" starts at V/T "<<tempM2Submesh.ofsVertex<<"/"<<tempM2Submesh.ofsTris<<" and has "<<tempM2Submesh.nVertex<<"/"<<tempM2Submesh.nTris<<" V/T\n";
+}
+std::cout << "Read "<<M2MSubmeshes.size()<<"/"<<M2MViews[0].nSub<<" Submeshes\n";
+
+//Texture units. Local to view 0
+TextureUnit tempM2TexUnit;
+if(!M2MTextureUnit.empty())
+{
+    M2MTextureUnit.clear();
+}
+file->seek(M2MViews[0].ofsTex);
+for(u32 i=0;i<M2MViews[0].nTex;i++)
+{
+    file->read(&tempM2TexUnit,sizeof(TextureUnit));
+    M2MTextureUnit.push_back(tempM2TexUnit);
+}
+std::cout << "Read "<<M2MTextureUnit.size()<<" Texture Unit entries for View 0\n";
+
+
+
+
+//Texture Lookup table. This is global data
+u16 tempM2TexLookup;
+if(!M2MTextureLookup.empty())
+{
+    M2MTextureLookup.clear();
+}
 file->seek(header.ofsTexLookup);
 for(u32 i=0;i<header.nTexLookup;i++)
 {
-
+    file->read(&tempM2TexLookup,sizeof(u16));
+    M2MTextureLookup.push_back(tempM2TexLookup);
 }
+std::cout << "Read "<<M2MTextureLookup.size()<<" Texture lookup entries\n";
+
+//Texture Definitions table. This is global data
+TextureDefinition tempM2TexDef;
+if(!M2MTextureDef.empty())
+{
+    M2MTextureDef.clear();
+}
+file->seek(header.ofsTextures);
+for(u32 i=0;i<header.nTextures;i++)
+{
+    file->read(&tempM2TexDef,sizeof(TextureDefinition));
+    M2MTextureDef.push_back(tempM2TexDef);
+}
+std::cout << "Read "<<M2MTextureDef.size()<<" Texture Definition entries\n";
+
+//Render Flags table. This is global data
+RenderFlags tempM2RF;
+if(!M2MRenderFlags.empty())
+{
+    M2MRenderFlags.clear();
+}
+file->seek(header.ofsTexFlags);
+for(u32 i=0;i<header.nTexFlags;i++)
+{
+    file->read(&tempM2RF,sizeof(RenderFlags));
+    M2MRenderFlags.push_back(tempM2RF);
+}
+std::cout << "Read "<<M2MRenderFlags.size()<<" Render Flags\n";
+
+
+
+//std::cout << M2MTextureUnit[0].submeshIndex1 <<","<<M2MTextureUnit[0].submeshIndex1 <<","<<M2MTextureUnit[0].textureIndex<<";\n";
+
+if(!M2MTextureFiles.empty())
+    M2MTextureFiles.clear();
+
+std::string tempTexFileName="";
+M2MTextureFiles.reallocate(M2MTextureDef.size());
+for(u32 i=0; i<M2MTextureDef.size(); i++)
+{
+    file->seek(M2MTextureDef[i].texFileOfs);
+    file->read(&tempTexFileName[0],M2MTextureDef[i].texFileLen);
+    M2MTextureFiles.push_back(tempTexFileName.c_str());
+    std::cout<<M2MTextureFiles.size()<<"-"<<M2MTextureFiles[i].c_str()<<"\n";
+}
+//    std::cout << "Read "<<M2MTextureFiles.size()<<"/"<<M2MTextureDef.size()<<" Texture file names\n";
+
+
 
-            //Now, M2MTriangles refers to M2MIndices and not to M2MVertices.
 //And M2MVertices are not usable like this. Thus we transform
+
 if(M2Vertices.size()>0)
     M2Vertices.clear();
 
@@ -119,38 +210,76 @@ namespace irr
 {
     M2Vertices.push_back(video::S3DVertex(M2MVertices[i].pos,M2MVertices[i].normal, video::SColor(255,100,100,100),M2MVertices[i].texcoords));
 }
-            if(M2Indices.size()>0)
-                M2Indices.clear();
 
-            for(u32 i=0;i<M2MTriangles.size();i++)
+
-            {
+
-                M2Indices.push_back(M2MIndices[M2MTriangles[i]]);
+	if (Mesh)
-            }
+		Mesh->drop();
 
 Mesh=new SMesh();
 
 
-            SMeshBuffer* IMB = new SMeshBuffer;
 while(Mesh->getMeshBufferCount()>0)
 {
     Mesh->MeshBuffers.erase(0);
 }
 
-            std::cout << "Sending "<<M2Vertices.size() <<" Vertices and " << M2Indices.size() <<" Indices to the MeshBuffer\n";
-            IMB->append(M2Vertices.const_pointer(),M2Vertices.size(),M2Indices.const_pointer(),M2Indices.size());
 
+for(u32 i=0; i < M2MViews[0].nSub;i++)//
+{
+//std::cout << "Proceeding with Submesh "<<i<<"/"<<M2MViews[0].nSub<<"\n";
+//Now, M2MTriangles refers to M2MIndices and not to M2MVertices.
+
+if(M2Indices.size()>0)
+    M2Indices.clear();
+
+for(u32 j=M2MSubmeshes[i].ofsTris;j<M2MSubmeshes[i].ofsTris+M2MSubmeshes[i].nTris;j++)
+{
+    M2Indices.push_back(M2MIndices[M2MTriangles[j]]);
+}
+
+//std::cout << "Sending "<<M2Vertices.size() <<" Vertices and " << M2Indices.size() <<" Indices to the MeshBuffer\n";
+
+IMB = new SMeshBuffer;
+IMB->append(M2Vertices.const_pointer(),M2Vertices.size(),M2Indices.const_pointer(),M2Indices.size());
 IMB->recalculateBoundingBox();
+
+//IMB->getMaterial().DiffuseColor.set(255,255-(u32)(255/(M2MSubmeshes.size()))*i,(u32)(255/(M2MSubmeshes.size()))*i,0);
+//IMB->getMaterial().DiffuseColor.set(255,(M2MSubmeshes[i].meshpartId==0?0:255),(M2MSubmeshes[i].meshpartId==0?255:0),0);
+
+
+std::string TexName=Basedir.c_str();
+TexName+="/";
+TexName+=M2MTextureFiles[M2MTextureUnit[i].textureIndex].c_str();
+
+while(TexName.find('\\')<TexName.size())//Replace \ by /
+    {
+    TexName.replace(TexName.find('\\'),1,"/");
+    }
+while(TexName.find(' ')<TexName.size())//Replace space by _
+    {
+    TexName.replace(TexName.find(' '),1,"_");
+    }
+std::transform(TexName.begin(), TexName.end(), TexName.begin(), tolower);
+
+IMB->getMaterial().setTexture(0,Device->getVideoDriver()->getTexture(TexName.c_str()));
+std::cout<<M2MRenderFlags[i].flags<<"--"<<M2MRenderFlags[i].blending<<"\n";
+IMB->getMaterial().BackfaceCulling=(M2MRenderFlags[i].flags & 0x04)?false:true;
+if(M2MRenderFlags[i].blending==1)
+    IMB->getMaterial().MaterialType=video::EMT_TRANSPARENT_ALPHA_CHANNEL;
     Mesh->addMeshBuffer(IMB);
 IMB->drop();
+//std::cout << "Mesh now has "<<Mesh->getMeshBufferCount()<<" Buffers\n";
+}
+
 aniMesh= new SAnimatedMesh();
-
-
 aniMesh->addMesh(Mesh);
 Mesh->drop();
 Mesh = 0;
 
 aniMesh->recalculateBoundingBox();
 
+
 return aniMesh;
 }
 

src/Client/GUI/CM2MeshFileLoader.h

@@ -1,6 +1,7 @@
 #include "irrlicht/irrlicht.h"
 #include "irrlicht/IMeshLoader.h"
-
+#include <string>
+#include <vector>
 
 namespace irr
 {
@@ -12,10 +13,10 @@ namespace irr
 public:
 
 	//! Constructor
-            CM2MeshFileLoader(IrrlichtDevice* device);
+	CM2MeshFileLoader(IrrlichtDevice* device, c8* basedir);
 
 	//! destructor
-            ~CM2MeshFileLoader();
+	virtual ~CM2MeshFileLoader();
 
 	//! returns true if the file maybe is able to be loaded by this class
 	//! based on the file extension (e.g. ".cob")
@@ -131,17 +132,64 @@ namespace irr
 	s32 lod;				 // LOD bias?
 };
 
-            //	io::IFileSystem* FileSystem;
+struct ModelViewSubmesh {
+    u32 meshpartId;
+    u16 ofsVertex;//Starting vertex number for this submesh
+    u16 nVertex;
+    u16 ofsTris;//Starting Triangle index
+    u16 nTris;
+    u16 unk1, unk2, unk3, unk4;
+    core::vector3df v;
+    float unkf[4];
+};
+
+struct TextureDefinition {
+    u32 texType;
+    u16 unk;
+    u16 texFlags;
+    u32 texFileLen;
+    u32 texFileOfs;
+};
+
+struct TextureUnit{
+    u16 Flags;
+    s16 renderOrder;
+    u16 submeshIndex1, submeshIndex2;
+    s16 colorIndex;
+    u16 renderFlagsIndex;
+    u16 TextureUnitNumber;
+    u16 unk1;
+    u16 textureIndex;
+    u16 TextureUnitNumber2;
+    u16 transparencyIndex;
+    u16 texAnimIndex;
+};
+
+struct RenderFlags{
+    u16 flags;
+    u16 blending;
+};
+
+//
+	io::IFileSystem* FileSystem;
 	IrrlichtDevice* Device;
 //    scene::IMeshManipulator* Manipulator;
     core::stringc M2MeshName;
+    core::stringc Basedir;
     SAnimatedMesh* aniMesh;
     SMesh* Mesh;
+    SMeshBuffer* IMB;
     //Taken from the Model file, thus m2M*
     core::array<ModelVertex> M2MVertices;
     core::array<ModelView> M2MViews;
     core::array<u16> M2MIndices;
     core::array<u16> M2MTriangles;
+    core::array<ModelViewSubmesh> M2MSubmeshes;
+    core::array<u16> M2MTextureLookup;
+    core::array<TextureDefinition> M2MTextureDef;
+    core::array<std::string> M2MTextureFiles;
+    core::array<TextureUnit> M2MTextureUnit;
+    core::array<RenderFlags> M2MRenderFlags;
     //Used for the Mesh, thus m2_noM_*
     core::array<video::S3DVertex> M2Vertices;
     core::array<u16> M2Indices;