#!BPY

""" 
Name: 'Resequence Object (.robj)...'
Blender: 249
Group: 'Export'
Tooltip: 'Export to Resequence Object File (.robj).'
"""

__author__ = ["Chris Hazard"]
__url__ = ("achrongame.com")
__version__ = "0.1"
__bpydoc__ = """\

Resequence Object Exporter

This script Exports a robj file.

"""

####################
#Copyright (c) 2007-2010, Hazardous Software Inc.
#All rights reserved.
#
#Redistribution and use in source and binary forms, with or without 
#modification, are permitted provided that the following conditions are 
#met: 
#
#* Redistributions of source code must retain the above copyright notice, 
#this list of conditions and the following disclaimer. 
#
#* Redistributions in binary form must reproduce the above copyright 
#notice, this list of conditions and the following disclaimer in the 
#documentation and/or other materials provided with the distribution. 
#
#* Neither the name of Hazardous Software Inc. nor the names of its 
#contributors may be used to endorse or promote products derived from 
#this software without specific prior written permission. 
#
#THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 
#IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 
#TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 
#PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
#HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
#SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 
#TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
#PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
#LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
#NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
#SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 


import struct
import Blender
from Blender import *
import BPyArmature
import BPyObject

def write_long(file, value):
    file.write(struct.pack("<l", value))

def write_float(file, value):
    file.write(struct.pack("<f", value))

def write_robj(filename):
    scene = Blender.Scene.GetCurrent()
    
    #grab just the meshes, see if only one mesh
    objs = [ob for ob in scene.objects if ob.type == 'Mesh']    
    if len(objs) == 1:
        obj = objs[0]
    else:
        #use selected object
        if len(scene.objects.selected) != 1:
            Blender.Draw.PupMenu('Must export exactly one object%t|Select only one object')
            return
        obj = scene.objects.selected[0]

    mesh = obj.getData()
    
    numfaces = len(mesh.faces)
    
    start_frame = Blender.Get('staframe')
    end_frame = Blender.Get('endframe')
    
    file = open(filename, "wb")
    write_long(file, numfaces)	
    write_long(file, start_frame)
    write_long(file, end_frame)

    if not mesh.hasFaceUV:
        Blender.Draw.PupMenu('Object must have UV coordinates%t|Apply a texture')
        return

    #write out unchanging UV coords
    for face in mesh.faces:
        if len(face.v) != 3:
            Blender.Draw.PupMenu('Object must consist of only triangles%t|Transform object to triangles')
            return

        for n in range(len(face.v)):
            #uv:
            #but, if using face vertecies, then face.uv[n][0], face.uv[n][1]
            # will be used... but since we're only using one texmap,
            # shouldn't use per-face vertecies in the first place
            write_float(file, face.uv[n][0])
            write_float(file, face.uv[n][1])

    #write out position and normal coords for each keyframe
    cur_mesh = Mesh.New()
    for frame in xrange(start_frame,end_frame+1):
        Blender.Set('curframe', frame)
        cur_mesh.getFromObject(obj.name)

        for face in cur_mesh.faces:
            for n in range(len(face.v)):
                #normals:
                if face.smooth:
                    write_float(file, face.v[n].no[0])
                    write_float(file, face.v[n].no[1])
                    write_float(file, face.v[n].no[2])
                else:
                    write_float(file, face.no[0])
                    write_float(file, face.no[1])
                    write_float(file, face.no[2])

        for face in cur_mesh.faces:
            for n in range(len(face.v)):
                #vertecies:
                write_float(file, face.v[n].co[0])
                write_float(file, face.v[n].co[1])
                write_float(file, face.v[n].co[2])

    file.close()
    print 'wrote robj file'

def main():
    cur_frame = Blender.Get('curframe')
    Blender.Window.FileSelector(write_robj, 'ROBJ Export', Blender.sys.makename(ext='.robj'))
    Blender.Set('curframe', cur_frame)

if __name__=='__main__':
    main()