import struct

from collections import OrderedDict

from gameobjects.matrix44 import *
from gameobjects.vector3 import *


class Node:
	pass

nodes = OrderedDict()

BaseNode = Node()
BaseNode.mtx = Matrix44()
BaseNode.brres_key = '3D00'
BaseNode.model_name = 'WorldBase'
BaseNode.lm_type = 0
nodes['Base'] = BaseNode



# todo: string table optimisation

header = struct.pack('>4sI', b'MScn', len(nodes))
entrydata = b''
stringtable = b''
stringoffsets = {}
currentoffset = 8 + (0x40 * len(nodes))

for key,node in nodes.items():
	#nodekey, brreskey, lmtype, nameoffset, matrix
	enc_name = node.model_name.encode('Shift-JIS')
	if enc_name not in stringoffsets:
		stringoffsets[enc_name] = currentoffset
		stringtable += enc_name + b'\0'
		currentoffset += len(enc_name) + 1

	nameoffs = stringoffsets[enc_name]


	entrydata += struct.pack('>4s4sII', key.encode('Shift-JIS'), node.brres_key.encode('Shift-JIS'), node.lm_type, stringoffsets[enc_name])
	for f in list(node.mtx.transposed_components())[0:12]:
		entrydata += struct.pack('>f', f)


open('scenedata.bin', 'wb').write(header + entrydata + stringtable)