Game Model Format

Made a revision of the chunk structure. I quickly realized I wanted to read the data into a generic hierarchy structure, without worrying about what any of the data actually meant. Then I can go through the structure and turn it into real model data. This is something the .b3d format does not allow.

Here's my GMF node reader. It returns a TGMFNode, and then you can read each node's data to see what is actually contained:

Type TGMFNode
	Field name:String
	Field size:Int
	Field data:TStream
	Field subnodes:TGMFNode[]
	
	Function Read:TGMFNode(stream:TStream,parent:TGMFNode=Null)
		Local node:TGMFNode
		Local subnodes:Int
		Local n
		Local bank:TBank
		If stream.Eof() Return
		node=New TGMFNode
		node.name=stream.ReadString(4)
		subnode_count=stream.ReadInt()
		Local subnodes_:TGMFNode[subnode_count]
		node.subnodes=subnodes_
		node.size=stream.ReadInt()
		bank=CreateBank(node.size)
		stream.readbytes bank.buf(),node.size
		node.data=CreateBankStream(bank)		
		For n=0 To subnode_count-1
			node.subnodes[n]=Read(stream,node)
		Next
		Return node
	EndFunction
	
	Method Write(stream:TStream)
		stream.WriteString name
		stream.WriteInt subnodes.length
		stream.WriteInt data.size()
		CopyStream data,stream,data.size()
	EndMethod
	
EndType

Function LoadGMF:TGMFNode(url:Object)
	Local stream:TStream
	Local root:TGMFNode
	stream=ReadStream(url)
	If Not stream Return
	root=TGMFNode.Read(stream)
	stream.close()
	Return root
EndFunction