Added Jeija's 3D code, with a few edits from me

src/content_cao.cpp

@@ -1369,7 +1369,21 @@ public:
 				u8 li = m_last_light;
 				setMeshColor(m_meshnode->getMesh(), video::SColor(255,li,li,li));
 			}
-		} else {
+		}
+		else if(m_prop.visual == "file")
+		{
+			scene::IMesh *mesh = createMeshFromFile(m_prop.meshfile, v3f(BS,BS,BS), smgr);
+			m_meshnode = smgr->addMeshSceneNode(mesh, NULL);
+			mesh->drop();
+
+			m_meshnode->setScale(v3f(m_prop.visual_size.X,
+				m_prop.visual_size.Y,
+				m_prop.visual_size.X));
+			u8 li = m_last_light;
+			setMeshColor(m_meshnode->getMesh(), video::SColor(255,li,li,li));
+		}
+		else
+		{
 			infostream<<"GenericCAO::addToScene(): \""<<m_prop.visual
 					<<"\" not supported"<<std::endl;
 		}

src/mesh.cpp

@@ -92,6 +92,13 @@ scene::IAnimatedMesh* createCubeMesh(v3f scale)
 	return anim_mesh;
 }
 
+scene::IAnimatedMesh* createMeshFromFile(std::string filename, v3f scale, scene::ISceneManager* smgr)
+{
+	scene::SAnimatedMesh *anim_mesh = new scene::SAnimatedMesh(smgr->getMesh(filename.c_str()));
+	scaleMesh(anim_mesh, scale);  // also recalculates bounding box
+	return anim_mesh;
+}
+
 static scene::IAnimatedMesh* extrudeARGB(u32 twidth, u32 theight, u8 *data)
 {
 	const s32 argb_wstep = 4 * twidth;

src/mesh.h

@@ -32,6 +32,11 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 */
 scene::IAnimatedMesh* createCubeMesh(v3f scale);
 
+/*
+	Create a mesh from a file.
+*/
+scene::IAnimatedMesh* createMeshFromFile(std::string filename, v3f scale, scene::ISceneManager* smgr);
+
 /*
 	Create a new extruded mesh from a texture.
 	Maximum bounding box is (+-scale.X/2, +-scale.Y/2, +-scale.Z).

src/object_properties.cpp

@@ -34,7 +34,8 @@ ObjectProperties::ObjectProperties():
 	initial_sprite_basepos(0,0),
 	is_visible(true),
 	makes_footstep_sound(false),
-	automatic_rotate(0)
+	automatic_rotate(0),
+	meshfile()
 {
 	textures.push_back("unknown_object.png");
 	textures_3d.push_back("unknown_object.png");
@@ -48,6 +49,7 @@ std::string ObjectProperties::dump()
 	os<<", weight="<<weight;
 	os<<", collisionbox="<<PP(collisionbox.MinEdge)<<","<<PP(collisionbox.MaxEdge);
 	os<<", visual="<<visual;
+	os<<", meshfile="<<meshfile;
 	os<<", visual_size="<<PP2(visual_size);
 	os<<", textures=[";
 	for(u32 i=0; i<textures.size(); i++){
@@ -74,6 +76,7 @@ void ObjectProperties::serialize(std::ostream &os) const
 	writeV3F1000(os, collisionbox.MinEdge);
 	writeV3F1000(os, collisionbox.MaxEdge);
 	os<<serializeString(visual);
+	os<<serializeString(meshfile);
 	writeV2F1000(os, visual_size);
 	writeU16(os, textures.size());
 	for(u32 i=0; i<textures.size(); i++){
@@ -101,6 +104,7 @@ void ObjectProperties::deSerialize(std::istream &is)
 	collisionbox.MinEdge = readV3F1000(is);
 	collisionbox.MaxEdge = readV3F1000(is);
 	visual = deSerializeString(is);
+	meshfile = deSerializeString(is);
 	visual_size = readV2F1000(is);
 	textures.clear();
 	u32 texture_count = readU16(is);

src/object_properties.h

@@ -40,6 +40,7 @@ struct ObjectProperties
 	bool is_visible;
 	bool makes_footstep_sound;
 	float automatic_rotate;
+	std::string meshfile;
 
 	ObjectProperties();
 	std::string dump();

src/scriptapi.cpp

@@ -924,6 +924,7 @@ static void read_object_properties(lua_State *L, int index,
 	getboolfield(L, -1, "is_visible", prop->is_visible);
 	getboolfield(L, -1, "makes_footstep_sound", prop->makes_footstep_sound);
 	getfloatfield(L, -1, "automatic_rotate", prop->automatic_rotate);
+	getstringfield(L, -1, "meshfile", prop->meshfile);
 }
 
 /*

src/server.cpp

@@ -4094,6 +4094,7 @@ void Server::fillMediaCache()
 		paths.push_back(mod.path + DIR_DELIM + "textures");
 		paths.push_back(mod.path + DIR_DELIM + "sounds");
 		paths.push_back(mod.path + DIR_DELIM + "media");
+		paths.push_back(mod.path + DIR_DELIM + "meshes");
 	}
 	
 	// Collect media file information from paths into cache