IColladaMeshWriter::writeScene got an additional flag to decide if root should be written.

Default stays as it was - a roots is written when it's not the SceneManager root.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@5691 dfc29bdd-3216-0410-991c-e03cc46cb475

changes.txt

@@ -1,5 +1,6 @@
 --------------------------
 Changes in 1.9 (not yet released)
+- IColladaMeshWriter::writeScene got an additional flag to decide if root should be written.
 - _IRR_MATERIAL_MAX_TEXTURES_ now set to 8 by default. So we can use now 8 textures per material without recompiling the engine. 
   Additionally there's a new global variable irr::video::MATERIAL_MAX_TEXTURES_USED which can be set to lower numbers to avoid most of the costs coming with this for people not needing more textures.
   But using more textures via _IRR_MATERIAL_MAX_TEXTURES_ also has become less calculation intensive than it was in the past, so in release builds the difference is hardly noticeable.

include/IColladaMeshWriter.h

@@ -224,7 +224,8 @@ namespace scene
 		}
 
 		//! writes a scene starting with the given node
-		virtual bool writeScene(io::IWriteFile* file, scene::ISceneNode* root) = 0;
+		//\param writeRoot: 0 = no, 1=yes unless root is scenemanager, 2=yes
+		virtual bool writeScene(io::IWriteFile* file, scene::ISceneNode* root, int writeRoot=1) = 0;
 
 
 		//! Set if texture information should be written

source/Irrlicht/CColladaMeshWriter.cpp

@@ -275,7 +275,7 @@ EMESH_WRITER_TYPE CColladaMeshWriter::getType() const
 }
 
 //! writes a scene starting with the given node
-bool CColladaMeshWriter::writeScene(io::IWriteFile* file, scene::ISceneNode* root)
+bool CColladaMeshWriter::writeScene(io::IWriteFile* file, scene::ISceneNode* root, int writeRoot)
 {
 	if (!file || !root)
 		return false;
@@ -365,7 +365,7 @@ bool CColladaMeshWriter::writeScene(io::IWriteFile* file, scene::ISceneNode* roo
 		Writer->writeLineBreak();
 
 		// Write the scenegraph.
-		if ( root->getType() != ESNT_SCENE_MANAGER )
+		if ( writeRoot == 2 || (writeRoot == 1 && root->getType() != ESNT_SCENE_MANAGER) )
 		{
 			// TODO: Not certain if we should really write the root or if we should just always only write the children.
 			// For now writing root to keep backward compatibility for this case, but if anyone needs to _not_ write

source/Irrlicht/CColladaMeshWriter.h

@@ -88,7 +88,7 @@ public:
 	virtual EMESH_WRITER_TYPE getType() const _IRR_OVERRIDE_;
 
 	//! writes a scene starting with the given node
-	virtual bool writeScene(io::IWriteFile* file, scene::ISceneNode* root) _IRR_OVERRIDE_;
+	virtual bool writeScene(io::IWriteFile* file, scene::ISceneNode* root, int writeRoot) _IRR_OVERRIDE_;
 
 	//! writes a mesh
 	virtual bool writeMesh(io::IWriteFile* file, scene::IMesh* mesh, s32 flags=EMWF_NONE) _IRR_OVERRIDE_;