#!BPY
'''
Name: 'Nigels Mesh Export Script'
Blender: 244
Group: 'Export'
Tooltip: 'Export scene mesh data as a Lua file.'
'''

from Blender import Window, sys, Draw
import bpy
import math

def my_object_util(sce):

	# Remove these when writing your own tool
	print 'Blend object count', len(bpy.data.objects)
	print 'Scene object count', len(sce.objects)
	
	# context means its selected, in the view layer and not hidden.
	print 'Scene context count', len(sce.objects.context)
	
	# Store the current context
	context = list(sce.objects.context)
	
	f = open( '/home/nigel/Blender/meshes.lua', 'w' )
	
	f.write( 'meshes = {}\n' )
		
	for mesh in [ x for x in context if x.type == 'Mesh' ]:
		f.write( 'mesh = {}\n' )
		f.write( 'mesh.name = \'' + mesh.name + '\'\n' )
		f.write( 'mesh.filename = \'' + mesh.getData( name_only=True ) + '.mesh\'\n' )
		f.write( 'mesh.loc = { ' + str(mesh.LocX) + ', ' + str(mesh.LocZ) + ', ' + str(-mesh.LocY) + ' }\n' )
		q = mesh.getMatrix().toQuat()
		f.write( 'mesh.rot = { ' + str(q.w) + ', ' + str(q.x) + ', ' + str(q.z) + ', ' + str(-q.y) + ' }\n' )
		f.write( 'mesh.scale = { ' + str(mesh.SizeX) + ', ' + str(mesh.SizeZ) + ', ' + str(mesh.SizeY) + ' }\n' )
		f.write( 'meshes[mesh.name] = mesh\n' )
		print mesh.getMatrix().translationPart(), q
		
	f.close()

def main():
	
	# Gets the current scene, there can be many scenes in 1 blend file.
	sce = bpy.data.scenes.active
	
	Window.WaitCursor(1)
	t = sys.time()
	
	# Run the object editing function
	my_object_util(sce)
	
	# Timing the script is a good way to be aware on any speed hits when scripting
	print 'Script finished in %.2f seconds' % (sys.time()-t)
	Window.WaitCursor(0)
	Draw.PupMenu( "Export%t | Finished" )
	
	
# This lets you can import the script without running it
if __name__ == '__main__':
	main()