io_export_psx_tmesh.py

# bpy. app. debug = True 
 
bl_info = {
    "name":         "PSX TMesh exporter",
    "author":       "Schnappy, TheDukeOfZill",
    "blender":      (2,7,9),
    "version":      (0,0,4),
    "location":     "File > Import-Export",
    "description":  "Export psx data format",
    "category":     "Import-Export"
}

import os

import bpy

import bmesh

import unicodedata

import subprocess

from math import radians, degrees, floor, cos, sin, sqrt, ceil

from mathutils import Vector

from collections import defaultdict

from bpy.props import (CollectionProperty,
                       StringProperty,
                       BoolProperty,
                       EnumProperty,
                       FloatProperty,
                       IntProperty
                       )

from bpy_extras.io_utils import (ExportHelper,
                                 axis_conversion)

from bpy_extras.object_utils import world_to_camera_view

from re import sub

class ExportMyFormat(bpy.types.Operator, ExportHelper):

    bl_idname       = "export_psx.c";

    bl_label        = "PSX compatible scene exporter";

    bl_options      = {'PRESET'};

    filename_ext    = ".c";
    
    exp_Triangulate = BoolProperty(

        name="Triangulate meshes ( Destructive ! )",

        description="Triangulate meshes (destructive ! Do not use your original file)",

        default=False,
    )
    
    exp_Scale = FloatProperty(

        name="Scale",

        description="Scale of exported mesh.",

        min=1, max=1000,

        default=65,

        )
        
    
    exp_Precalc = BoolProperty(

        name="Use precalculated BGs",

        description="Render backgrounds and converts them to TIMs",

        default=False,
    )
    
    # ~ exp_ShowPortals = BoolProperty(
    
        # ~ name="Render Portals in precalculated BGs",
        
        # ~ description="Useful for debugging",
        
        # ~ default=False,    
    # ~ )
    
    exp_useIMforTIM = BoolProperty(
    
        name = "Use ImageMagick",
    
        description = "Use installed Image Magick's convert tool to convert PNGs to 8/4bpp",
    
        default = False
    )
    
    exp_TIMbpp = BoolProperty(
    
        name = "Use 4bpp TIMs",
    
        description = "Converts rendered backgrounds to 4bpp TIMs instead of the default 8bpp",
    
        default = False
    )
    
    exp_LvlNbr = IntProperty(

        name="Level number",

        description="That number is used in the symbols name.",

        min=1, max=10,

        default=0,

        )
    
    exp_expMode = BoolProperty(

        name="Use blend file directory for export",

        description="Files will be exported in the same folder as the blend file.",

        default=False,

        )
        
    exp_CustomTexFolder = StringProperty(
    
        name = "Textures Dir",
    
        description = "By default, the script looks for / saves textures in the ./TEX folder. You can tell it to use a different folder.",
        
        default="TEX"
    
        )
    
    
    def execute(self, context):
        
    ### Globals declaration
    
        global nextTpage, freeTpage
        
        global nextClutSlot, freeClutSlot
        
        global tpageY
        
        global TIMbpp
        
        global timFolder
        
    ### Functions

        def triangulate_object(obj): 
            
            # Triangulate an object's mesh
            # Source : https://blender.stackexchange.com/questions/45698/triangulate-mesh-in-python/45722#45722
            
            me = obj.data
            
            # Get a BMesh representation
            
            bm = bmesh.new()
            
            bm.from_mesh(me)
            
            bmesh.ops.triangulate(bm, faces=bm.faces[:], quad_method=0, ngon_method=0)
            
            # Finish up, write the bmesh back to the mesh
            
            bm.to_mesh(me)
            
            bm.free()
        
        def CleanName(strName):
            
            # Removes specials characters, dots ans space from string
            
            name = strName.replace(' ','_')
            
            name = name.replace('.','_')
            
            name = unicodedata.normalize('NFKD',name).encode('ASCII', 'ignore').decode()
            
            return name

        def isInFrame(scene, cam, target):
            
            # Checks if an object is in view frame
            
            position = world_to_camera_view(scene, cam, target.location)
            
            if (
                
                 (position.x < 0 or position.x > 1 ) or
                
                 (position.y < 0 or position.y > 1 ) or
                
                 (position.z < 0 )
                
               ) :
                   
                return False
                
            else:
                
                return True

        def isInPlane(plane, obj):
                
            # Checks  if 'obj' has its coordinates contained between the plane's coordinate.
            # Obj is a dict
            # If 'obj' is contained, returns 1.
            # If 'obj' is partly contained, returns which side (S == 2, W == 4, N == 8, E == 6) it's overlapping.
            # If 'obj' is not contained in 'plane', returns 0.
            
            if (   
                 (plane.get('x1') <= obj.get('x1') and plane.get('x2') >= obj.get('x2') ) and
                 (plane.get('y1') <= obj.get('y1') and plane.get('y2') >= obj.get('y2') ) 
               ):
                
                return 1
                
            # Overlap on the West side of the plane
            if ( 
                 ( plane.get('x1') >= obj.get('x1') and plane.get('x1') <= obj.get('x2') ) and 
                 ( plane.get('y1') <= obj.get('y2') and plane.get('y2') >= obj.get('y1') ) 
               ):
                
                return 4
            
            # Overlap on the East side of the plane
            if ( 
                 ( plane.get('x2') <= obj.get('x2') and plane.get('x2') >= obj.get('x1') ) and 
                 ( plane.get('y1') <= obj.get('y2') and plane.get('y2') >= obj.get('y1') ) 
               ):
                
                return 6
                
            # Overlap on the North side of the plane
            if ( 
                 ( plane.get('y2') <= obj.get('y2') and plane.get('y2') >= obj.get('y1') ) and 
                 ( plane.get('x1') <= obj.get('x1') and plane.get('x2') >= obj.get('x2') )  
               ): 

                return 8
            
            # Overlap on the South side of the plane
            if ( 
                 ( plane.get('y1') >= obj.get('y1') and plane.get('y1') <= obj.get('y2') ) and 
                 ( plane.get('x1') <= obj.get('x1') and plane.get('x2') >= obj.get('x2') )
               ):
                
                return 2

            else:
                
                return 0
            
        def getSepLine(plane, side):
            
            # Construct the line used for BSP generation from 'plane' 's coordinates, on specified side (S, W, N, E)
            # Returns an array of 3 values
            
            if side == 'N':
                
                return [ LvlPlanes[plane]['x1'], LvlPlanes[plane]['y2'], LvlPlanes[plane]['x2'], LvlPlanes[plane]['y2'] ]
            
            if side == 'S':
                
                return [ LvlPlanes[plane]['x1'], LvlPlanes[plane]['y1'], LvlPlanes[plane]['x2'], LvlPlanes[plane]['y1'] ]
                        
            if side == 'W':
                
                return [ LvlPlanes[plane]['x1'], LvlPlanes[plane]['y1'], LvlPlanes[plane]['x1'], LvlPlanes[plane]['y2'] ]
                
            if side == 'E':
                
                return [ LvlPlanes[plane]['x2'], LvlPlanes[plane]['y1'], LvlPlanes[plane]['x2'], LvlPlanes[plane]['y2'] ]

        def checkLine(lineX1, lineY1 ,lineX2 ,lineY2, objX1, objY1, objX2, objY2):

            # Returns wether object spanning from objXY1 to objXY2 is Back, Front, Same or Intersecting the line 
            # defined by points (lineXY1, lineXY2)
                
            val1 = ( objX1 - lineX1 ) * ( lineY2-lineY1 ) - ( objY1 - lineY1 ) * ( lineX2 - lineX1 )
            
            # Rounding to avoid false positives
            
            val1 = round(val1, 4)
            
            val2 = ( objX2 - lineX1 ) * ( lineY2-lineY1 ) - ( objY2 - lineY1 ) * ( lineX2 - lineX1 )
            
            val2 = round(val2, 4)
            
            if ( (val1 > 0) and (val2 > 0) ):
                
                return "front"
                
            elif ( (val1 < 0) and (val2 < 0) ):
                
                return "back"
                
            elif ( (val1 == 0) and (val2 == 0) ):
                
                return "connected"
                
            elif ( 
                    ( (val1>0) and (val2==0) ) or 
                    ( (val1==0) and (val2>0) ) 
                 ):
                
                return "front"
                
            elif ( 
                    ( (val1<0) and (val2==0) ) or 
                    ( (val1==0) and (val2<0) ) 
                 ):
                
                return "back"
                
            elif ( 
                   ( (val1<0) and (val2>0) ) or
                   ( (val1>0) and (val2<0) ) 
                 ):
                
                return "intersect"

        def objVertLtoW(target):
            
            # Converts an object's vertices coordinates from local to global
            
            worldPos = []
            
            mw = target.matrix_world
            
            mesh = bpy.data.meshes[ target.name ]
            
            for vertex in mesh.vertices:
                
                worldPos.append( mw * vertex.co * scale )
                
            return worldPos

        def objVertWtoS(scene, cam, target, toScale = 1):
            
            # Converts an object's vertices coordinates from local to screen coordinates

            screenPos = []

            # Get objects world matrix
            
            mw = target.matrix_world
            
            # Get object's mesh
            
            mesh = bpy.data.meshes[ target.name ]
            
            # For each vertex in mesh, get screen coordinates
            
            for vertex in mesh.vertices:
                
                # Get meshes world coordinates 
                
                screenPos.append( world_to_camera_view( scene, cam, ( mw * vertex.co ) ) )
            
            if toScale:
            
                # Get current scene rsolution
            
                resX = scene.render.resolution_x
            
                resY = scene.render.resolution_y
            
                # Scale values
            
                for vector in screenPos:
                    
                    # ~ vector.x = int( resX * vector.x ) < 0 ? 0 : int( resX * vector.x ) > 320 ? 320 : int( resX * vector.x )
                    
                    vector.x = max ( 0, min ( resX, int( resX * vector.x ) ) )
            
                    vector.y = resY - max ( 0, min ( resY, int( resY * vector.y ) ) )
                    
                    vector.z = int( vector.z )
                                
            return screenPos
        
        def convertBGtoTIM( filePathWithExt, colors = 256, bpp = 8, timX = 640, timY = 0, clutX = 0, clutY = 480, transparency = 'alpha'):
            
            global timFolder
            
            # By default, converts a RGB to 8bpp, 256 colors indexed PNG, then to a 8bpp TIM image
            
            filePathWithoutExt = filePathWithExt[ : filePathWithExt.rfind('.') ]
            
            fileBaseName = os.path.basename(filePathWithoutExt)
            
            # For windows users, add '.exe' to the command
            
            exe = ""
            
            if os.name == 'nt':
                
                exe = ".exe"
            
            # 8bpp TIM needs < 256 colors
            
            if bpp == 8:
                
                # Clamp number of colors to 256
                
                colors = min( 256, colors )
            
            elif bpp == 4:
            
            # 4bpp TIM needs < 16 colors
            
                # Clamp number of colors to 16
                
                colors = min( 16, colors )
            
            if transparency == "alpha":
                
                transpMethod = "-usealpha"
            
            elif transparency == "black":
            
                transpMethod = "-b"
            
            elif transparency == "nonblack":
            
                transpMethod = "-t"
                
            # Quantization of colors with pngquant ( https://pngquant.org/ )
            
            subprocess.call( [ "pngquant" + exe, str( colors ), filePathWithExt, "-o", filePathWithExt, "--force" ] )

            # Image magick's convert can be used alternatively ( https://imagemagick.org/ )

            if self.exp_useIMforTIM :

                # ImageMagick alternative
                
                subprocess.call( [ "convert" + exe, filePathWithExt, "-colors", str( colors ), filePathWithExt ] )
            
            # Convert to tim with img2tim ( https://github.com/Lameguy64/img2tim )
            
            subprocess.call( [ "img2tim" + exe, transpMethod, "-bpp", str( bpp ), "-org", str( timX ), str( timY ), "-plt" , str( clutX ), str( clutY ),"-o", timFolder + os.sep + fileBaseName + ".tim", filePathWithExt ] )

        def VramIsFull( size ):
            
            # Returns True if not enough space in Vram for image
            
            # Transpose bpp to bitshift value

            global nextTpage, freeTpage
            
            global nextClutSlot, freeClutSlot
            
            global tpageY

            if TIMbpp == 8:
                
                shift = 1
            
            elif TIMbpp == 4:
                
                shift = 2
            
            else:
                
                shift = 0

            # Get image width in vram

            if not size:

                imageWidth = size[0] >> shift
            
            else:
                
                imageWidth = size >> shift
                
            # Divide by cell width ( 64 pixels )
            
            imageWidthInTPage = ceil( imageWidth / 64 ) 
            
            if ( tpageY == 0 and
                
                nextTpage + ( imageWidthInTPage * 64 ) < 1024 and 
               
                freeTpage - imageWidthInTPage > 0
               
               ) :
                   
                return False
                
            
            elif ( tpageY == 256 and
                
                nextTpage + ( imageWidthInTPage * 64 ) < 960 and 
               
                freeTpage - imageWidthInTPage > 1
               
               ) :
                   
                return False
            
            else:
                
                return True

        def setNextTimPos( image ):
            
            # Sets nextTpage, freeTpage, tpageY, nextClutSlot, freeClutSlot to next free space in Vram
            
            # Transpose bpp to bitshift value

            global nextTpage, freeTpage
            
            global nextClutSlot, freeClutSlot
            
            global tpageY

            if TIMbpp == 8:
                
                shift = 1
            
            elif TIMbpp == 4:
                
                shift = 2
            
            else:
                
                shift = 0

            # Get image width in vram

            imageWidth = image.size[0] >> shift
            
            # Divide by cell width ( 64 pixels )
            
            imageWidthInTPage = ceil( imageWidth / 64 ) 
            
            if ( tpageY == 0 and
                
                nextTpage + ( imageWidthInTPage * 64 ) < 1024 and 
               
                freeTpage - imageWidthInTPage > 0
               
               ) :
                   
                nextTpage += imageWidthInTPage * 64
            
                freeTpage -= imageWidthInTPage
                
                nextClutSlot += 1
            
                freeClutSlot -= 1
                
            
            elif ( tpageY == 256 and
                
                nextTpage + ( imageWidthInTPage * 64 ) < 960 and 
               
                freeTpage - imageWidthInTPage > 1
               
               ) :
                   
                nextTpage += imageWidthInTPage * 64
            
                freeTpage -= imageWidthInTPage
                
                nextClutSlot += 1
            
                freeClutSlot -= 1
            
            else:
                
                tpageY = 256
                
                nextTpage = 320
                
                nextClutSlot += 1
            
                freeClutSlot -= 1
        
        def linearToRGB(component):
            # Convert linear Color in range 0.0-1.0 to range 0-255
            # https://www.color.org/bgsrgb.pdf
            a = 0.055
            if component <= 0.0031308:
                linear = component * 12.92
            else:
                linear = ( 1 + a ) * pow( component, 1 / 2.4 ) - a
            return linear
        
        # Set rendering resolution to 320x240
    
        bpy.context.scene.render.resolution_x = 320
        
        bpy.context.scene.render.resolution_y = 240
        
    ### VRam Layout
        
        nextTpage = 320
        
        nextClutSlot = 480
        
        freeTpage = 21
        
        freeClutSlot = 32
        
        tpageY    = 0
        
        # Set TIMs default bpp value
        
        TIMbpp = 8
        
        TIMshift = 1
        
        if self.exp_TIMbpp:
            
            TIMbpp = 4
        
            TIMshift = 2
        
        # Leave edit mode to avoid errors

        bpy.ops.object.mode_set(mode='OBJECT')

        # If set, triangulate objects of type mesh 

        if self.exp_Triangulate:

            for o in range(len(bpy.data.objects)):

                if bpy.data.objects[o].type == 'MESH':

                    triangulate_object(bpy.data.objects[o])
                    
        # Set Scale 
        
        scale = self.exp_Scale
        
        # Get working directory path
        
        # ~ workFolder = os.path.dirname(bpy.path.abspath(bpy.data.filepath))
        
        # ~ if workFolder == "":
            
            # ~ workFolder = os.getcwd()
        
        # Get export directory path
        
        filepath = self.filepath
        
        if self.exp_expMode:
            
            filepath = bpy.data.filepath
            
        expFolder = os.path.dirname(bpy.path.abspath(filepath))
        
        # If the file wasn't saved before, expFolder will be empty. Default to current directory in that case
        
        if expFolder == "":
            
            expFolder = os.getcwd()
            
        # Get texture folder, default to ./TEX
        
        textureFolder = os.path.join( expFolder, "TEX")
        
        if self.exp_CustomTexFolder != "TEX":
            
            textureFolder = os.path.join( expFolder, self.exp_CustomTexFolder)
        
        timFolder = os.path.join( expFolder, "TIM")
        
        # If the TIM folder doesn't exist, create it
        
        if not os.path.exists(timFolder):
                
                os.mkdir(timFolder)
        
    ### Export pre-calculated backgrounds and construct a list of visible objects for each camera angle
        
        camAngles = []
        
        defaultCam = 'NULL'

        # List of Rigid/Static bodies to ray a cast upon

        rayTargets = []

        # If using precalculated BG, render and export them to ./TIM/
        
        if self.exp_Precalc:

            # Get BGs TIM size depending on mode
            
            timSize = bpy.context.scene.render.resolution_x >> TIMshift
            
            timSizeInCell = ceil( timSize / 64 )
            
            # Create folder if it doesn't exist
            
            # ~ os.makedirs(timFolder, exist_ok = 1)
            
            # Set file format config
            
            bpy.context.scene.render.image_settings.file_format = 'PNG'
            
            # ~ bpy.context.scene.render.image_settings.quality = 100
            
            # ~ bpy.context.scene.render.image_settings.compression = 0
            
            bpy.context.scene.render.image_settings.color_depth = '8'
            
            bpy.context.scene.render.image_settings.color_mode = 'RGB'
            
            # Get active cam
            
            scene = bpy.context.scene
            
            cam = scene.camera
            
            # Find default cam, and cameras in camPath
            
            for o in bpy.data.objects:

                if o.type == 'CAMERA' and o.data.get('isDefault'):

                    defaultCam = o.name
                    
                if o.type == 'CAMERA' and o.name.startswith("camPath"):
                    
                    filepath = textureFolder + os.sep
                    
                    filename = "bg_" + CleanName(o.name)
                    
                    fileext = "." + str(bpy.context.scene.render.image_settings.file_format).lower()
                    
                    # Set camera as active

                    bpy.context.scene.camera = o
                    
                    # Render and save image
                    
                    bpy.ops.render.render()
                    
                    bpy.data.images["Render Result"].save_render( filepath + filename + fileext )
                    
                    # Convert PNG to TIM
                    
                    if not VramIsFull( bpy.context.scene.render.resolution_x ):
                    
                        convertBGtoTIM( filepath + filename + fileext , bpp = TIMbpp, timX = nextTpage, timY = tpageY, clutY = nextClutSlot, transparency = "nonblack" )
                    
                    else:
                
                        tpageY = 256
                
                        nextTpage = 320
                        
                        if not VramIsFull( bpy.context.scene.render.resolution_x ):
                        
                            convertBGtoTIM( filepath + filename + fileext , bpp = TIMbpp, timX = nextTpage, timY = tpageY, clutY = nextClutSlot, transparency = "nonblack" )
                        
                    # Add camera object to camAngles
                    
                    camAngles.append(o)
        
            # Notify layout change to vars
            
            nextTpage += timSizeInCell * 64
            
            freeTpage -= timSizeInCell
            
            nextClutSlot += 1
            
            freeClutSlot -= 1
            
### Start writing output files

        # Stolen from Lameguy64 : https://github.com/Lameguy64/Blender-RSD-Plugin/blob/b3b6fd4475aed4ca38587ca83d34000f60b68a47/io_export_rsd.py#L68

        filepath = self.filepath
        
        filepath = filepath.replace(self.filename_ext, "")  # Quick fix to get around the aforementioned 'bugfix'
        
        # TODO : add option to export scenes as levels
        
        # ~ if self.exp_UseScenesAsLevels:
            
            # ~ fileName = cleanName(bpy.data.scenes[0].name)
            
        # ~ else:

        # We're writing a few files:
        #  - custom_types.h contains the 'engine' 's specific struct definitions
        #  - level.h        contains the forward declaration of the level's variables
        #  - level.c        contains the initialization and data of those variables
        
        # 'custom_types.h' goes in export folder
        
        custom_types_h = expFolder + os.sep + 'custom_types.h'

        # If export mode is set to Use blender file name
        
        # ~ if self.exp_expMode:
        
            # ~ fileName = bpy.path.basename(filepath)
            
            # ~ filepath = self.filepath
        
            # ~ folder = os.path.dirname(bpy.path.abspath(filepath))
                        
            # ~ levels_folder = folder + os.sep
        
        # ~ else:
        
        lvlNbr = self.exp_LvlNbr
        
        fileName  = 'level' + str( lvlNbr )
    
        # Levels files go in ./levels/
        
        # If ./levels does not exist, create it
        
        if not os.path.exists( expFolder + os.sep + 'levels'):
            
            os.mkdir( expFolder + os.sep + 'levels')
        
        levels_folder = expFolder + os.sep + 'levels' + os.sep
    
        # TODO : dynamic filenaming
        
        level_h = levels_folder + fileName + '.h'
        
        level_c = levels_folder + fileName + '.c'

### Custom types Header (custom_types.h)
        
        # Open file
        
        h = open(os.path.normpath(custom_types_h),"w+")
        
    ## Add C structures definitions
        
        h.write(
            
                "#pragma once\n" + 
                
                "#include <sys/types.h>\n" + 
                
                "#include <libgte.h>\n" + 
                
                "#include <libgpu.h>\n\n" 
        
                )
        
        # Partial declaration of structures to avoid inter-dependencies issues
        
        h.write("struct BODY;\n" +
                "struct VANIM;\n" +
                "struct PRIM;\n" +
                "struct MESH;\n" +
                "struct CAMPOS;\n" +
                "struct CAMPATH;\n" +
                "struct CAMANGLE;\n" +
                "struct SIBLINGS;\n" +
                "struct CHILDREN;\n" +
                "struct NODE;\n" +
                "struct QUAD;\n" +
                "\n")
        
        # BODY
        
        h.write("typedef struct BODY {\n" +
                "\tVECTOR  gForce;\n" +
                "\tVECTOR  position;\n" +
                "\tSVECTOR velocity;\n" +
                "\tint     mass;\n" +
                "\tint     invMass;\n" +
                "\tVECTOR  min; \n" +
                "\tVECTOR  max; \n" +
                "\tint     restitution; \n" +
                # ~ "\tstruct NODE * curNode; \n" +
                "\t} BODY;\n\n")
        
        # VANIM
        
        h.write("typedef struct VANIM { \n" +
                "\tint nframes;    // number of frames e.g   20\n" +
                "\tint nvert;      // number of vertices e.g 21\n" +
                "\tint cursor;     // anim cursor\n" +
                "\tint lerpCursor; // anim cursor\n" +
                "\tint dir;        // playback direction (1 or -1)\n" +
                "\tint interpolate; // use lerp to interpolate keyframes\n" +
                "\tSVECTOR data[]; // vertex pos as SVECTORs e.g 20 * 21 SVECTORS\n" +
                # ~ "\tSVECTOR normals[]; // vertex pos as SVECTORs e.g 20 * 21 SVECTORS\n" +
                "\t} VANIM;\n\n")
                
        # PRIM
        
        h.write("typedef struct PRIM {\n" +
                "\tVECTOR order;\n" +
                "\tint    code; // Same as POL3/POL4 codes : Code (F3 = 1, FT3 = 2, G3 = 3,\n// GT3 = 4) Code (F4 = 5, FT4 = 6, G4 = 7, GT4 = 8)\n" +
                "\t} PRIM;\n\n")
        
        # MESH
        
        h.write("typedef struct MESH {  \n"+
                "\tTMESH   *    tmesh;\n" +
                "\tPRIM    *    index;\n" +
                "\tTIM_IMAGE *  tim;  \n" + 
                "\tunsigned long * tim_data;\n"+
                "\tMATRIX      mat;\n" + 
                "\tVECTOR      pos;\n" + 
                "\tSVECTOR     rot;\n" +
                "\tshort       isRigidBody;\n" +
                "\tshort       isStaticBody;\n" +
                "\tshort       isRound;\n" +
                "\tshort       isPrism;\n" +
                "\tshort       isAnim;\n" +
                "\tshort       isActor;\n" +
                "\tshort       isLevel;\n" +
                "\tshort       isBG;\n" +
                "\tshort       isSprite;\n" +
                "\tlong        p;\n" + 
                "\tlong        OTz;\n" + 
                "\tBODY     *  body;\n" + 
                "\tVANIM    *  anim;\n" + 
                "\tstruct NODE   *    node;\n" + 
                "\tVECTOR      pos2D;\n" + 
                "\t} MESH;\n\n")
        
        #QUAD
        
        h.write("typedef struct QUAD {\n" +
                "\tVECTOR       v0, v1;\n" +
                "\tVECTOR       v2, v3;\n" +
                "\t} QUAD;\n\n")
        
        # CAMPOS
        
        h.write("typedef struct CAMPOS {\n" +
                "\tVECTOR  pos;\n" +
                "\tSVECTOR rot;\n" + 
                "\t} CAMPOS;\n\n" +
                "\n// Blender cam ~= PSX cam with these settings : \n" +
                "// NTSC - 320x240, PAL 320x256, pixel ratio 1:1,\n" +
                "// cam focal length : perspective 90° ( 16 mm ))\n" + 
                "// With a FOV of 1/2, camera focal length is ~= 16 mm / 90°\n" + 
                "// Lower values mean wider angle\n\n")
        
        # CAMANGLE
        
        h.write("typedef struct CAMANGLE {\n" +
                "\tCAMPOS    * campos;\n" +
                "\tTIM_IMAGE * BGtim;\n" +
                "\tunsigned long * tim_data;\n" +
                "\tQUAD  bw, fw;\n" +
                "\tint index;\n" +
                "\tMESH * objects[];\n" +
                "\t} CAMANGLE;\n\n")
                
        # CAMPATH
        
        h.write("typedef struct CAMPATH {\n" +
                "\tshort len, cursor, pos;\n" +
                "\tVECTOR points[];\n" +
                "\t} CAMPATH;\n\n")

        # SIBLINGS
        
        h.write("typedef struct SIBLINGS {\n" +
                "\tint index;\n" +
                "\tstruct NODE * list[];\n" +
                "\t} SIBLINGS ;\n\n")
    
        # CHILDREN

        h.write("typedef struct CHILDREN {\n" +
                "\tint index;\n" +
                "\tMESH * list[];\n" + 
                "\t} CHILDREN ;\n\n")
        
        # NODE

        h.write("typedef struct NODE {\n" +
                "\tMESH * plane;\n" +
                "\tSIBLINGS * siblings;\n" + 
                "\tCHILDREN * objects;\n" + 
                "\tCHILDREN * rigidbodies;\n" + 
                "\t} NODE;\n\n")

        # LEVEL
        
        h.write("typedef struct LEVEL {\n" + 
                "\tCVECTOR * BGc;\n" + 
                "\tVECTOR * BKc;\n" + 
                "\tMATRIX * cmat;\n" + 
                "\tMATRIX * lgtmat;\n" +
                "\tMESH   ** meshes;\n" +
                "\tint * meshes_length;\n" +
                "\tMESH * actorPtr;\n" +
                "\tMESH * levelPtr;\n" +
                "\tMESH * propPtr;\n" +
                "\tCAMANGLE * camPtr;\n" +
                "\tCAMPATH * camPath;\n" +
                "\tCAMANGLE ** camAngles;\n" +
                "\tNODE * curNode;\n" +
                "\tMESH * meshPlan; // This one is temporary\n" +
                "\t} LEVEL;\n")

        h.close()

## Level Data (level.c)

        # Store every variable name in a list so that we can populate the level.h file later
        
        level_symbols = []

        level_symbols.append("LEVEL " + fileName)

        f = open(os.path.normpath(level_c),"w+")

        f.write(
        
                '#include "' + fileName + '.h"\n\n' +
                
                "NODE_DECLARATION\n"
                
                )
                
    ## Horizon & Ambient color
    
        # Get world horizon colors
        BGr = str( round( linearToRGB( bpy.data.worlds[0].horizon_color.r )  * 255 ) )
        BGg = str( round( linearToRGB( bpy.data.worlds[0].horizon_color.g )  * 255) )
        BGb = str( round( linearToRGB( bpy.data.worlds[0].horizon_color.b )  * 255 ) )
        
        f.write(
                "CVECTOR " + fileName + "_BGc = { " + BGr + ", " + BGg + ", " + BGb + ", 0 };\n\n"
                )
        level_symbols.append( "CVECTOR " + fileName + "_BGc" )
        
        # Get ambient color
        BKr = str( round( linearToRGB( bpy.data.worlds[0].ambient_color.r )  * 255 ) )
        BKg = str( round( linearToRGB( bpy.data.worlds[0].ambient_color.g )  * 255) )
        BKb = str( round( linearToRGB( bpy.data.worlds[0].ambient_color.b )  * 255 ) )
        
        f.write(
                "VECTOR " + fileName + "_BKc = { " + BKr + ", " + BKg + ", " + BKb + ", 0 };\n\n"
                )
        level_symbols.append( "VECTOR " + fileName + "_BKc" )
        
    ## Camera setup

        # List of points defining the camera path

        camPathPoints = []

        # Define first mesh. Will be used as default if no properties are found in meshes
        
        first_mesh = CleanName( bpy.data.meshes[ 0 ].name )

        # Set camera position and rotation in the scene
        
        for o in range( len( bpy.data.objects ) ):
            
            # Add objects of type MESH with a Rigidbody or StaticBody flag set to a list
            
            if bpy.data.objects[ o ].type == 'MESH':
                
                if ( 
                    
                    bpy.data.objects[ o ].data.get('isRigidBody') or 
                    
                    bpy.data.objects[ o ].data.get('isStaticBody')
                    
                    #or bpy.data.objects[o].data.get('isPortal')
                    
                   ):
    
                    rayTargets.append(bpy.data.objects[o])
            
            # Set object of type CAMERA with isDefault flag as default camera
    
            if bpy.data.objects[o].type == 'CAMERA' and bpy.data.objects[o].data.get('isDefault'):
    
                defaultCam = bpy.data.objects[o].name
            
            # Declare each blender camera as a CAMPOS
    
            if bpy.data.objects[o].type == 'CAMERA':
    
                f.write("CAMPOS " + fileName + "_camPos_" + CleanName( bpy.data.objects[ o ].name ) + " = {\n" +
    
                            "\t{ " + str( round( -bpy.data.objects[o].location.x * scale ) ) +
                              
                               "," + str( round(  bpy.data.objects[o].location.z * scale ) ) + 
                              
                               "," + str( round( -bpy.data.objects[o].location.y * scale ) ) + " },\n" +
    
                            "\t{ " + str( round( -( degrees( bpy.data.objects[ o ].rotation_euler.x ) -90 ) / 360 * 4096 ) ) +
                            
                               "," + str( round(    degrees( bpy.data.objects[ o ].rotation_euler.z )       / 360 * 4096 ) ) + 
                               
                               "," + str( round( -( degrees( bpy.data.objects[ o ].rotation_euler.y )     ) / 360 * 4096 ) ) + 
                               
                               " }\n" +
    
                        "};\n\n")
                
                level_symbols.append( "CAMPOS " + fileName + "_camPos_" + CleanName( bpy.data.objects[ o ].name ) )
                
        # Find camera path points and append them to camPathPoints[]
        
            if bpy.data.objects[o].type == 'CAMERA' :
    
                if ( bpy.data.objects[ o ].name.startswith( "camPath" ) 
                
                     and not bpy.data.objects[ o ].data.get( 'exclude' )
                   
                   ) :
    
                    camPathPoints.append(bpy.data.objects[o].name)

        # Write the CAMPATH structure
        
        if camPathPoints:
            
            # Populate with points found above
            
            # ~ camPathPoints = list(reversed(camPathPoints))
            
            for point in range(len(camPathPoints)):
    
                if point == 0:
    
                    f.write("CAMPATH " + fileName + "_camPath = {\n" +
    
                            "\t" + str( len( camPathPoints ) ) + ",\n" +
    
                            "\t0,\n" +
    
                            "\t0,\n" +
    
                            "\t{\n")
                            
                    level_symbols.append( "CAMPATH " + fileName + "_camPath" )
    
                f.write( "\t\t{ " + str( round( -bpy.data.objects[ camPathPoints[ point ] ].location.x * scale ) ) +
                
                              "," + str( round(  bpy.data.objects[ camPathPoints[ point ] ].location.z * scale ) ) + 
                            
                              "," + str( round( -bpy.data.objects[ camPathPoints[ point ] ].location.y * scale ) ) + 
                            
                             " }" )
    
                if point != len( camPathPoints ) - 1:
    
                    f.write(",\n")  
    
            f.write("\n\t}\n};\n\n")
        
        else:
            
            # If no camera path points are found, use default
            
            f.write("CAMPATH " + fileName + "_camPath = {\n" +
    
                            "\t0,\n" +
    
                            "\t0,\n" +
    
                            "\t0\n"  +
    
                            "};\n\n" )
                            
            level_symbols.append( "CAMPATH " + fileName + "_camPath" )
        
    ## Lighting setup 
    
        # Light sources will be similar to Blender's sunlamp
        # A maximum of 3 light sources will be used
        
        # LLM : Local Light Matrix   
          
        if len( bpy.data.lamps ) is not None:
            
            # ~ f.write( "static MATRIX lgtmat = {\n" +
                     # ~ "\t 4096, 4096, 4096,\n" +
                     # ~ "\t -4096, 4096, 4096,\n" +
                     # ~ "\t -4096, 4096, -4096\n" +
                     # ~ "};\n")
                     
            cnt = 0
       
            pad = 3 - len( bpy.data.lamps )
            
            f.write( "MATRIX " + fileName + "_lgtmat = {\n")
            
            for l in range(len(bpy.data.lamps)):

                # Lightsource energy
                
                energy   = int( bpy.data.lamps[ l ].energy * 4096 )
                
                # Get lightsource's world orientation
                
                lightdir = bpy.data.objects[ bpy.data.lamps[ l ].name ].matrix_world * Vector( ( 0, 0, -1, 0 ) )
                
                f.write( 
            
                    "\t" + str( int(  lightdir.x * energy ) ) + "," + 
            
                    "\t" + str( int( -lightdir.z * energy ) ) + "," +
            
                    "\t" + str( int(  lightdir.y * energy ) )  

                    )
            
                if l != len( bpy.data.lamps ) - 1:

                    f.write(",\n")
                
                # If less than 3 light sources exist in blender, fill the matrix with 0s.                
                
                if pad:
          
                    f.write(",\n")
          
                    while cnt < pad:
          
                        f.write("\t0,0,0")
          
                        if cnt != pad:
          
                            f.write(",\n")
          
                        cnt += 1
            
            f.write("\n\t};\n\n")
            
            level_symbols.append( "MATRIX " + fileName + "_lgtmat" )
            
            # LCM : Local Color Matrix
            
            f.write( "MATRIX " + fileName + "_cmat = {\n")
            
            LCM = []
        
            for l in bpy.data.lamps:
        
                LCM.append( str( int( l.color.r * 4096 ) if l.color.r else 0 ) )
        
                LCM.append( str( int( l.color.g * 4096 ) if l.color.g else 0 ) )
        
                LCM.append( str( int( l.color.b * 4096 ) if l.color.b else 0 ) )
            
            if len(LCM) < 9:
        
                while len(LCM) < 9:
        
                    LCM.append('0')

            # Write LC matrix

            f.write(
            
                "\t" + LCM[ 0 ] + "," + LCM[ 3 ] + "," + LCM[ 6 ] + ",\n" +
            
                "\t" + LCM[ 1 ] + "," + LCM[ 4 ] + "," + LCM[ 7 ] + ",\n" +
            
                "\t" + LCM[ 2 ] + "," + LCM[ 5 ] + "," + LCM[ 8 ] + "\n" )
            
            f.write("\t};\n\n")
            
            level_symbols.append( "MATRIX " + fileName + "_cmat" )
    
    ## Meshes 
    
        actorPtr = first_mesh
      
        levelPtr = first_mesh
      
        propPtr = first_mesh
      
        nodePtr = first_mesh
        
        timList = []
        
        for m in bpy.data.meshes:
 
            if not m.get('isPortal') :
                
                # Store vertices coordinates by axis to find max/min coordinates
                
                Xvals = []
               
                Yvals = []
               
                Zvals = []
     
                cleanName = CleanName(m.name)

                # Write vertices vectors
     
                f.write( "SVECTOR " + fileName + "_model" + cleanName + "_mesh[] = {\n" )
                
                level_symbols.append( "SVECTOR " + "model" + cleanName + "_mesh[]" )

                for i in range( len( m.vertices ) ):
                    
                    v = m.vertices[ i ].co
                    
                    # Append vertex coords to lists
                    
                    Xvals.append(  v.x )
             
                    Yvals.append(  v.y )
             
                    Zvals.append( -v.z )
                    
                    f.write("\t{ " + str( round(  v.x * scale ) ) +
                            
                               "," + str( round( -v.z * scale ) ) +
                              
                               "," + str( round(  v.y * scale ) ) + " }" )
                    
                    if i != len(m.vertices) - 1:
             
                        f.write(",")
             
                    f.write("\n")
             
                f.write("};\n\n")
                
                # Write normals vectors
     
                f.write("SVECTOR " + fileName + "_model"+cleanName+"_normal[] = {\n")
                
                level_symbols.append( "SVECTOR " + fileName + "_model"+cleanName+"_normal[]" )
                
                for i in range(len(m.vertices)):
                
                    poly = m.vertices[i]
                
                    f.write( "\t"+ str( round( -poly.normal.x * 4096 ) ) + 
                             
                             "," + str( round(  poly.normal.z * 4096 ) ) +
                             
                             "," + str( round( -poly.normal.y * 4096 ) ) + ", 0" )
                
                    if i != len(m.vertices) - 1:
                
                        f.write(",")
                
                    f.write("\n")
                
                f.write("};\n\n")
                
                # Write UV textures coordinates
                
                if len(m.uv_textures) != None:
     
                    for t in range(len(m.uv_textures)):
     
                        if m.uv_textures[t].data[0].image != None:
     
                            f.write("SVECTOR " + fileName + "_model"+cleanName+"_uv[] = {\n")
                            
                            level_symbols.append( "SVECTOR " + fileName + "_model" + cleanName + "_uv[]" )
     
                            texture_image = m.uv_textures[t].data[0].image
     
                            tex_width = texture_image.size[0]
     
                            tex_height = texture_image.size[1]
     
                            uv_layer = m.uv_layers[0].data
     
                            for i in range(len(uv_layer)):
     
                                u = uv_layer[i].uv
     
                                ux = u.x * tex_width
     
                                uy = u.y * tex_height
     
                                # Clamp values to 0-255 to avoid tpage overflow
     
                                f.write("\t" + str( max( 0, min( round( ux ) , 255 ) ) ) + 
                                        
                                         "," + str( max( 0, min( round( tex_height - uy ) , 255 ) ) ) +
                                         
                                         ", 0, 0" ) 
     
                                if i != len(uv_layer) - 1:
     
                                    f.write(",")
     
                                f.write("\n")
     
                            f.write("};\n\n")
                            
                            # Save UV texture to a file in ./TIM
                            
                            # It will have to be converted to a tim file

                            if texture_image.filepath == '':

                                # ~ os.makedirs(dirpath, exist_ok = 1)

                                texture_image.filepath_raw = textureFolder + os.sep + CleanName(texture_image.name) + "." + texture_image.file_format

                            texture_image.save()
                            
                            
                # Write vertex colors vectors
     
                f.write("CVECTOR " + fileName + "_model" + cleanName + "_color[] = {\n" )
                
                level_symbols.append( "CVECTOR " + fileName + "_model" + cleanName + "_color[]" )
                 
                # If vertex colors exist, use them
                
                if len(m.vertex_colors) != 0:           
                
                    colors = m.vertex_colors[0].data
                
                    for i in range(len(colors)):
                
                        f.write("\t" + str( int( colors[ i ].color.r * 255 ) ) + "," +
                                      
                                       str( int( colors[ i ].color.g * 255 ) ) + "," +
                                       
                                       str( int( colors[ i ].color.b * 255 ) ) + ", 0" )
                
                        if i != len(colors) - 1:
                
                            f.write(",")
                
                        f.write("\n")
                
                # If no vertex colors, default to 2 whites, 1 grey
                
                else:                                  
                
                    for i in range(len(m.polygons) * 3):
                
                        if i % 3 == 0:
                
                            f.write("\t80, 80, 80, 0" )
                                            
                        else:
                
                            f.write("\t128, 128, 128, 0" )
                
                        if i != (len(m.polygons) * 3) - 1:
                
                            f.write(",")
                
                        f.write("\n")
                
                f.write("};\n\n")
                
                # Write polygons index + type
                
                f.write( "PRIM " + fileName + "_model" + cleanName + "_index[] = {\n" )
                
                level_symbols.append( "PRIM " + fileName + "_model" + cleanName + "_index[]" )
                
                for i in range(len(m.polygons)):
                
                    poly = m.polygons[i]
                
                    f.write( "\t" + str( poly.vertices[ 0 ] ) + "," + str( poly.vertices[ 1 ] ) + "," + str( poly.vertices[ 2 ] ) )
                    
                    if len(poly.vertices) > 3:
                
                        f.write("," + str(poly.vertices[3]) + ",8")
                
                    else:
                
                        f.write(",0,4")
                    
                    if i != len(m.polygons) - 1:
                
                        f.write(",")
                
                    f.write("\n")
                
                f.write("};\n\n")
                
                # Get object's custom properties
                
                # Set defaults values
                
                chkProp = {
           
                    'isAnim':0,
           
                    'isRigidBody':0,
           
                    'isStaticBody':0,
                    
                    'isRound':0,
           
                    'isPrism':0,
           
                    'isActor':0,
           
                    'isLevel':0,
           
                    'isBG':0,
           
                    'isSprite':0,
           
                    'mass': 1,
           
                    'restitution': 0,
           
                    'lerp': 0
           
                }
                
                # Get real values from object
                
                for prop in chkProp:
            
                    if m.get(prop) is not None:
            
                        chkProp[prop] = m[prop]
                
                # put isBG back to 0 if using precalculated BGs
                
                if not self.exp_Precalc:
            
                    chkProp['isBG'] = 0;
                
                if m.get('isActor'):
            
                    actorPtr = m.name
                
                if m.get('isLevel'):
            
                    levelPtr = cleanName
                
                if m.get('isProp'):
            
                    propPtr = cleanName

        ## Vertex animation
                    
                # write vertex anim if isAnim != 0 
                # Source : https://stackoverflow.com/questions/9138637/vertex-animation-exporter-for-blender
                
                if m.get("isAnim") is not None and m["isAnim"] != 0:
                    
                    # Write vertex pos
                    
                    o = bpy.data.objects[m.name]

                    # If an action exists with the same name as the object, use that
                    
                    if m.name in bpy.data.actions:
                    
                        frame_start = int(bpy.data.actions[m.name].frame_range[0])
                    
                        frame_end = int(bpy.data.actions[m.name].frame_range[1])
                    
                    else:
                        
                        # Use scene's Start/End frames
                        
                        frame_start = int( bpy.context.scene.frame_start )
                    
                        frame_end = int( bpy.context.scene.frame_end )
                    
                    nFrame = frame_end - frame_start
                    
                    c = 0;
                    
                    tmp_meshes = []
                    
                    for i in range(frame_start, frame_end):
                        
                        bpy.context.scene.frame_set(i)
                        
                        bpy.context.scene.update()

                        nm = o.to_mesh(bpy.context.scene, True, 'PREVIEW')
                                            
                        if i == frame_start :
                        
                            f.write("VANIM " + fileName + "_model"+cleanName+"_anim = {\n" +
                            
                                    "\t" + str(nFrame) + ",\n" +
                            
                                    "\t" + str(len(nm.vertices)) + ",\n" + 
                            
                                    "\t0,\n" + 
                            
                                    "\t0,\n" + 
                            
                                    "\t1,\n" + 
                            
                                    "\t" + str(chkProp['lerp']) + ",\n" + 
                            
                                    "\t{\n"
                            
                                    )
                            
                            level_symbols.append( "VANIM " + fileName + "_model"+cleanName+"_anim" )
                            
                        for v in range(len(nm.vertices)):
                        
                            if v == 0:

                                f.write("\t\t//Frame %d\n" % i)

                            f.write("\t\t{ " + str(round(nm.vertices[v].co.x*scale)) + "," + str(round(-nm.vertices[v].co.z*scale)) + "," + str(round(nm.vertices[v].co.y*scale)) + " }")

                            if c != len(nm.vertices) * (nFrame) * 3 - 3:

                                f.write(",\n")

                            if v == len(nm.vertices) - 1:

                                f.write("\n")

                            c += 3;

                        tmp_meshes.append(nm)

                    f.write("\n\t}\n};\n")

                    # Remove meshe's working copies
                    
                    for nm in tmp_meshes:

                        bpy.data.meshes.remove(nm)
                    
                # bpy.data.objects[bpy.data.meshes[0].name].active_shape_key.value : access shape_key
                
        ## Mesh world transform setup
                
                # Write object matrix, rot and pos vectors
                
                f.write(
                
                        # ~ "MATRIX " + fileName + "_model"+cleanName+"_matrix = {0};\n" +
                       
                        # ~ "VECTOR " + fileName + "_model"+cleanName+"_pos    = {"+ str(round(bpy.data.objects[m.name].location.x * scale)) + "," + str(round(-bpy.data.objects[m.name].location.z * scale)) + "," + str(round(bpy.data.objects[m.name].location.y * scale)) + ", 0};\n" +
                       
                        # ~ "SVECTOR " + fileName + "_model"+cleanName+"_rot   = {"+ str(round(degrees(bpy.data.objects[m.name].rotation_euler.x)/360 * 4096)) + "," + str(round(degrees(-bpy.data.objects[m.name].rotation_euler.z)/360 * 4096)) + "," + str(round(degrees(bpy.data.objects[m.name].rotation_euler.y)/360 * 4096)) + "};\n" +
                       
                        # ~ "short " + fileName + "_model"+cleanName+"_isRigidBody = " + str(int(chkProp['isRigidBody'])) + ";\n" +
                       
                        # ~ "short " + fileName + "_model"+cleanName+"_isStaticBody = " + str(int(chkProp['isStaticBody'])) + ";\n" +
                       
                        # ~ "short " + fileName + "_model"+cleanName+"_isPrism = " + str(int(chkProp['isPrism'])) + ";\n" +
                       
                        # ~ "short " + fileName + "_model"+cleanName+"_isAnim = " + str(int(chkProp['isAnim'])) + ";\n" +
                       
                        # ~ "short " + fileName + "_model"+cleanName+"_isActor = " + str(int(chkProp['isActor'])) + ";\n" +
                       
                        # ~ "short " + fileName + "_model"+cleanName+"_isLevel = " + str(int(chkProp['isLevel'])) + ";\n" +
                       
                        # ~ "short " + fileName + "_model"+cleanName+"_isBG = " + str(int(chkProp['isBG'])) + ";\n" +
                       
                        # ~ "short " + fileName + "_model"+cleanName+"_isSprite = " + str(int(chkProp['isSprite'])) + ";\n" +
                       
                        # ~ "long " + fileName + "_model"+cleanName+"_p = 0;\n" +
                       
                        # ~ "long " + fileName + "_model"+cleanName+"_OTz = 0;\n" +
                       
                        "BODY " + fileName + "_model"+cleanName+"_body = {\n" +
                       
                        "\t{0, 0, 0, 0},\n" +
                       
                        "\t" + str(round(bpy.data.objects[m.name].location.x * scale)) + "," + str(round(-bpy.data.objects[m.name].location.z * scale)) + "," + str(round(bpy.data.objects[m.name].location.y * scale)) + ", 0,\n" +
                       
                        "\t"+ str(round(degrees(bpy.data.objects[m.name].rotation_euler.x)/360 * 4096)) + "," + str(round(degrees(-bpy.data.objects[m.name].rotation_euler.z)/360 * 4096)) + "," + str(round(degrees(bpy.data.objects[m.name].rotation_euler.y)/360 * 4096)) + ", 0,\n" +
                       
                        "\t" + str(int(chkProp['mass'])) + ",\n" +
                       
                        "\tONE/" + str(int(chkProp['mass'])) + ",\n" +
                       
                        # write min and max values of AABBs on each axis
                       
                        "\t" + str(round(min(Xvals) * scale)) + "," + str(round(min(Zvals) * scale)) + "," + str(round(min(Yvals) * scale)) + ", 0,\n" +
                       
                        "\t" + str(round(max(Xvals) * scale)) + "," + str(round(max(Zvals) * scale)) + "," + str(round(max(Yvals) * scale)) + ", 0,\n" +
                       
                        "\t" + str(int(chkProp['restitution'])) + ",\n" + 
                       
                        # ~ "\tNULL\n" + 
                       
                        "\t};\n\n")
                       
                level_symbols.append( "BODY  " + fileName + "_model"+cleanName+"_body" )
                
                # Write TMESH struct
                
                f.write( "TMESH " + fileName + "_model" + cleanName + " = {\n" )
                
                f.write( "\t" + fileName + "_model" + cleanName + "_mesh,\n" )
                
                f.write( "\t" + fileName + "_model" + cleanName + "_normal,\n" )

                level_symbols.append( "TMESH " + fileName + "_model" + cleanName )
                
                # ~ level_symbols.append( "model" + cleanName + "_mesh"  )
                
                # ~ level_symbols.append( "model" + cleanName + "_normal" )
                
                if len(m.uv_textures) != 0:
                
                    for t in range(len(m.uv_textures)):
                
                        if m.uv_textures[0].data[0].image != None:
                
                            f.write("\t" + fileName + "_model"+cleanName+"_uv,\n")
                
                            # ~ level_symbols.append( "model" + cleanName + "_uv" )
                
                        else:
                
                            f.write("\t0,\n")
                else:
                
                    f.write("\t0,\n")
                
                f.write( "\t" + fileName + "_model" + cleanName + "_color, \n" )
                
                # ~ level_symbols.append( "model" + cleanName + "_color" )
                
                # According to libgte.h, TMESH.len should be # of vertices. Meh...
                
                f.write( "\t" + str( len ( m.polygons ) ) + "\n" )
                
                f.write( "};\n\n" )
                
                # Write texture binary name and declare TIM_IMAGE
                # By default, loads the file from the ./TIM folder
                
                if len(m.uv_textures) != None:

                    for t in range(len(m.uv_textures)): 

                        if m.uv_textures[0].data[0].image != None:
                            
                            tex_name = texture_image.name

                            prefix   = str.partition(tex_name, ".")[0].replace('-','_')

                            prefix   = CleanName(prefix)

                            # Add Tex name to list if it's not in there already

                            if prefix in timList:

                                break

                            else:
                                
                                # Convert PNG to TIM
                    
                                # If filename contains a dot, remove extension
                    
                                if tex_name.find('.') != -1:
                                    
                                    tex_name = tex_name[ : tex_name.rfind( '.' ) ]

                                filePathWithExt = textureFolder + os.sep + CleanName( tex_name ) + "." + texture_image.file_format.lower()
                                
                                if not VramIsFull( bpy.context.scene.render.resolution_x ):
                    
                                    convertBGtoTIM( filePathWithExt, bpp = TIMbpp, timX = nextTpage, timY = tpageY, clutY = nextClutSlot )
                    
                                    setNextTimPos( texture_image )
                                
                                elif VramIsFull( bpy.context.scene.render.resolution_x ) and tpageY == 0:
                            
                                    tpageY = 256
                            
                                    nextTpage = 320
                                    
                                    if not VramIsFull( bpy.context.scene.render.resolution_x ):
                                
                                        convertBGtoTIM( filePathWithExt, bpp = TIMbpp, timX = nextTpage, timY = tpageY, clutY = nextClutSlot )
                                
                                        setNextTimPos( texture_image )
                                    
                                    else:
                                        
                                        self.report({'ERROR'}, "Not enough space in VRam !")
                                    
                                else:
                                    
                                    self.report({'ERROR'}, "Not enough space in VRam !")
                                
                                # ~ print( str(freeTpage) + " : " + str(nextTpage) + " : " + str(nextClutSlot) + " : " + str(freeClutSlot) )
                                
                                # Write corresponding TIM declaration
                                
                                f.write("extern unsigned long " + "_binary_TIM_" + prefix + "_tim_start[];\n")

                                f.write("extern unsigned long " + "_binary_TIM_" + prefix + "_tim_end[];\n")

                                f.write("extern unsigned long " + "_binary_TIM_" + prefix + "_tim_length;\n\n")

                                f.write("TIM_IMAGE " + fileName + "_tim_" + prefix + ";\n\n")
                                
                                level_symbols.append( "unsigned long " + "_binary_TIM_" + prefix + "_tim_start[]" )
                                
                                level_symbols.append( "unsigned long " + "_binary_TIM_" + prefix + "_tim_end[]" )
                                
                                level_symbols.append( "unsigned long " + "_binary_TIM_" + prefix + "_tim_length" )
                                
                                level_symbols.append( "TIM_IMAGE " + fileName + "_tim_" + prefix )
                                
                                timList.append(prefix)

                # ~ f.write("NODE_DECLARATION\n")

                f.write( "MESH " + fileName + "_mesh" + cleanName + " = {\n" )
                
                f.write("\t&" + fileName + "_model"+ cleanName +",\n")
                
                f.write("\t" + fileName + "_model" + cleanName + "_index,\n")
                
                if len(m.uv_textures) != 0:
                
                    for t in range(len(m.uv_textures)):
                
                        if m.uv_textures[0].data[0].image != None:
                
                            tex_name = texture_image.name

                            prefix   = str.partition(tex_name, ".")[0].replace('-','_')

                            prefix   = CleanName(prefix)
                            
                            f.write("\t&" + fileName + "_tim_"+ prefix + ",\n")
                       
                            f.write("\t_binary_TIM_" + prefix + "_tim_start,\n")
                       
                        else:
                       
                            f.write("\t0,\n" +
                       
                                    "\t0,\n")     
                else:
                    
                    f.write("\t0,\n" +
                    
                            "\t0,\n")     
                    
                f.write(
                        
                        "\t{0},\n" +
                       
                        "\t{" + str(round(bpy.data.objects[m.name].location.x * scale)) + "," 
                        
                              + str(round(-bpy.data.objects[m.name].location.z * scale)) + ","
                        
                              + str(round(bpy.data.objects[m.name].location.y * scale)) + ", 0},\n" +
                       
                        "\t{"+ str(round(degrees(bpy.data.objects[m.name].rotation_euler.x)/360 * 4096)) + ","
                        
                             + str(round(degrees(-bpy.data.objects[m.name].rotation_euler.z)/360 * 4096)) + "," 
                        
                             + str(round(degrees(bpy.data.objects[m.name].rotation_euler.y)/360 * 4096)) + "},\n" +
                       
                        "\t" + str( int( chkProp[ 'isRigidBody' ] ) ) + ", // isRigidBody\n" +
                       
                        "\t" + str(int(chkProp['isStaticBody'])) + ", // isStaticBody\n" +
                        
                        "\t" + str(int(chkProp['isRound'])) + ", // isRound \n" +
                       
                        "\t" + str(int(chkProp['isPrism'])) + ", // isPrism\n" +
                       
                        "\t" + str(int(chkProp['isAnim'])) + ", // isAnim\n" +
                       
                        "\t" + str(int(chkProp['isActor'])) + ", // isActor\n" +
                       
                        "\t" + str(int(chkProp['isLevel'])) + ", // isLevel\n" +
                       
                        "\t" + str(int(chkProp['isBG'])) + ", // isBG\n" +
                       
                        "\t" + str(int(chkProp['isSprite'])) + ",// isSprite\n" +
                       
                        "\t0,\n" +
                       
                        "\t0,\n" + 
                        
                        "\t&" + fileName + "_model"+cleanName+"_body,\n"
                        
                        )
                        
                if m.get("isAnim") is not None and m["isAnim"] != 0:
                        
                        f.write("\t&" + fileName + "_model"+cleanName+"_anim,\n")
                else:
                        
                        f.write("\t0,\n")
                        
                        
                f.write(
                        
                        "\t" + "subs_" + m.name + ",\n" +
                        
                        "\t0" +
                        
                        "\n};\n\n"
                        )
                                
                level_symbols.append( "MESH " + fileName + "_mesh" + cleanName )
                
        # Remove portals from mesh list as we don't want them to be exported
        
        meshList = list(bpy.data.meshes)
        
        portalList = []
        
        for mesh in meshList:
            
            if mesh.get('isPortal'):
                
                meshList = [i for i in meshList if i != mesh]
            
                # Nasty way of removing all occurrences of the mesh
                # ~ try:
                    # ~ while True:
                        # ~ meshList.remove(mesh)
                # ~ except ValueError:
                    # ~ pass
                
                portalList.append( bpy.data.objects[mesh.name] )
        
        f.write("MESH * " + fileName + "_meshes[" + str( len(meshList ) ) + "] = {\n")

        for k in range(len(meshList)):

            cleanName = CleanName(meshList[k].name)

            f.write("\t&" + fileName + "_mesh" + cleanName)

            if k != len(meshList) - 1:

                f.write(",\n")

        f.write("\n}; \n\n")
        
        f.write("int " + fileName + "_meshes_length = " + str( len( meshList ) ) + ";\n\n")
        
        level_symbols.append( "MESH * " + fileName + "_meshes[" + str(len(meshList)) + "]")
        
        level_symbols.append( "int " + fileName + "_meshes_length" )

        # If camAngles is empty, use default camera, and do not include pre-calculated backgrounds

        if not camAngles:

            f.write("CAMANGLE " + fileName + "_camAngle_" + CleanName(defaultCam) + " = {\n" +
                   
                    "\t&" + fileName + "_camPos_" + CleanName(defaultCam) + ",\n" +
                   
                    "\t0,\n\t 0,\n\t { 0 },\n\t { 0 },\n\t 0,\n\t 0\n" + 
                   
                    "};\n\n")
            
            level_symbols.append( "CAMANGLE " + fileName + "_camAngle_" + CleanName(defaultCam) )
        
        # If camAngles is populated, use backgrounds and camera angles
        
        for camera in camAngles:
        
            # Get current scene 
            
            scene = bpy.context.scene
            
            # List of portals
            
            visiblePortal = []
            
            for portal in portalList:
                
                if isInFrame(scene, camera, portal):
                    
                    # Get normalized direction vector between camera and portal
                    
                    dirToTarget = portal.location - camera.location
                    
                    dirToTarget.normalize() 
                    
                    # Cast a ray from camera to body to determine visibility
                    
                    result, location, normal, index, hitObject, matrix = scene.ray_cast( camera.location, dirToTarget )
                    
                    # If hitObject is portal, nothing is obstructing it's visibility
                    
                    if hitObject is not None:
                        
                        if hitObject in portalList:
                            
                            if hitObject == portal:
                                
                                visiblePortal.append(hitObject)
                                
            # If more than one portal is visible, only keep the two closest ones
            
            if len( visiblePortal ) > 2:
                
                # Store the tested portals distance to camera
                
                testDict = {}
                
                for tested in visiblePortal:
            
                    # Get distance between cam and tested portal
            
                    distToTested = sqrt( ( tested.location - camera.location ) * ( tested.location - camera.location ) )

                    # Store distance
            
                    testDict[distToTested] = tested
                
                # If dictionary has more than 2 portals, remove the farthest ones
                
                while len( testDict ) > 2:
                    
                    del testDict[max(testDict)]

                # Reset visible portal

                visiblePortal.clear()
                    
                # Get the portals stored in the dict and store them in the list
                
                for Dportal in testDict:
                
                    visiblePortal.append(testDict[Dportal])
                
                # Revert to find original order back
                
                visiblePortal.reverse()
                
            # List of target found visible
            
            visibleTarget = []
            
            for target in rayTargets:
                
                # Chech object is in view frame
                
                if isInFrame(scene, camera, target):
                    
                    # Get normalized direction vector between camera and object
                    
                    dirToTarget = target.location - camera.location
                    
                    dirToTarget.normalize() 
                     
                    # Cast ray from camera to object
                    # Unpack results into several variables. 
                    # We're only interested in 'hitObject' though
                    
                    result, hitLocation, normal, index, hitObject, matrix = scene.ray_cast( camera.location, dirToTarget )
                    
                    # If hitObject is the same as target, nothing is obstructing it's visibility
                    
                    if hitObject is not None:
                        
                        # If hit object is a portal, cast a new ray from hit location to target
                        
                        if hitObject.data.get('isPortal'):
                        
                            # Find out if we're left or right of portal
                            
                            # Get vertices world coordinates
                            
                            v0 = hitObject.matrix_world * hitObject.data.vertices[0].co
                            
                            v1 = hitObject.matrix_world * hitObject.data.vertices[1].co
                            
                            # Check side : 
                            #               'back' : portal in on the right of the cam, cam is on left of portal
                            #               'front' : portal in on the left of the cam, cam is on right of portal 
                            
                            side = checkLine(v0.x, v0.y, v1.x, v1.y , camera.location.x, camera.location.y, camera.location.x, camera.location.y )
                            
                            if side == 'front':
                                
                                # we're on the right of the portal, origin.x must be > hitLocation.x 
                                
                                offset = [ 1.001, 0.999, 0.999 ]
                            
                            else :
                                
                                # we're on the left of the portal, origin.x must be < hitLocation.x
                                
                                offset = [ 0.999, 1.001, 1.001 ]
                            
                            # Add offset to hitLocation, so that the new ray won't hit the same portal
                            
                            origin = Vector( ( hitLocation.x * offset[0], hitLocation.y * offset[1], hitLocation.z * offset[2]  ) )
                            
                            result, hitLocationPort, normal, index, hitObjectPort, matrix = scene.ray_cast( origin , dirToTarget )
                            
                            if hitObjectPort is not None:
                                
                                if hitObjectPort in rayTargets:

                                    visibleTarget.append(target)
                        
                        # If hitObject is not a portal, just add it
                        
                        elif hitObject in rayTargets:
                                
                            visibleTarget.append(target)
                        
            if bpy.data.objects[ actorPtr ] not in visibleTarget:
                
                visibleTarget.append( bpy.data.objects[ actorPtr ] )
            
            # If visiblePortal length is under 2, this means there's only one portal
            
            # Empty strings to be populated depending on portal position (left/right of screen)
            
            before = ''
            
            after  = ''
            
            if len( visiblePortal ) < 2 :
                
                # Find wich side of screen the portal is on. left side : portal == bw, right side : portal == fw
                
                screenCenterX = int( scene.render.resolution_x / 2 )
                
                screenY = int( scene.render.resolution_y )
                
                # Get vertices screen coordinates
                
                s = objVertWtoS(scene, camera, visiblePortal[0])
                
                # Check line
                
                side = checkLine( 
                                    screenCenterX, 0, screenCenterX, screenY,
                                
                                    s[1].x,
                                
                                    s[1].y,
                                
                                    s[3].x,
                                
                                    s[3].y 
                                )
                
                
                # If front == right of screen : fw
                
                if side == "front":
                    
                    before = "\t{\n\t\t{ 0, 0, 0, 0 },\n\t\t{ 0, 0, 0, 0 },\n\t\t{ 0, 0, 0, 0 },\n\t\t{ 0, 0, 0, 0 }\n\t},\n"

                # If back == left of screen : bw
                
                else :
                    
                    after = "\t{\n\t\t{ 0, 0, 0, 0 },\n\t\t{ 0, 0, 0, 0 },\n\t\t{ 0, 0, 0, 0 },\n\t\t{ 0, 0, 0, 0 }\n\t},\n"
            
            prefix = CleanName(camera.name)
            
            # Include Tim data 
            
            f.write("extern unsigned long "+"_binary_TIM_bg_" + prefix + "_tim_start[];\n")
            
            f.write("extern unsigned long "+"_binary_TIM_bg_" + prefix + "_tim_end[];\n")
            
            f.write("extern unsigned long "+"_binary_TIM_bg_" + prefix + "_tim_length;\n\n")
            
            # Write corresponding TIM_IMAGE struct 
            
            f.write("TIM_IMAGE tim_bg_" + prefix + ";\n\n")
            
            # Write corresponding CamAngle struct
            
            f.write("CAMANGLE " + fileName + "_camAngle_" + prefix + " = {\n" +
            
                    "\t&" + fileName + "_camPos_" + prefix + ",\n" +
            
                    "\t&tim_bg_" + prefix + ",\n" +
            
                    "\t_binary_TIM_bg_" + prefix + "_tim_start,\n" +
                    
                    "\t// Write quad NW, NE, SE, SW\n")
            
            f.write( before )
            
            # Feed to level_symbols
                        
            level_symbols.append( "unsigned long "+"_binary_TIM_bg_" + prefix + "_tim_start[]")
            
            level_symbols.append( "unsigned long "+"_binary_TIM_bg_" + prefix + "_tim_end[]")
            
            level_symbols.append( "unsigned long "+"_binary_TIM_bg_" + prefix + "_tim_length")
            
            level_symbols.append( "TIM_IMAGE tim_bg_" + prefix )
            
            level_symbols.append( "CAMANGLE " + fileName + "_camAngle_" + prefix )
            
            for portal in visiblePortal:
                
                w = objVertLtoW(portal)
                
                # ~ f.write("\t// " + str(portal) + "\n" )
                            
                # Write portal'vertices world coordinates NW, NE, SE, SW
                
                f.write("\t{\n\t\t" +
                            
                            "{ " + str( int (w[3].x ) ) + ", " + str( int (w[3].y ) ) + ", " + str( int (w[3].z ) ) + ", 0 },\n\t\t" +
                
                            "{ " + str( int (w[2].x ) ) + ", " + str( int (w[2].y ) ) + ", " + str( int (w[2].z ) ) + ", 0 },\n\t\t" +
                            
                            "{ " + str( int (w[0].x ) ) + ", " + str( int (w[0].y ) ) + ", " + str( int (w[0].z ) ) + ", 0 },\n\t\t" +
                            
                            "{ " + str( int (w[1].x ) ) + ", " + str( int (w[1].y ) ) + ", " + str( int (w[1].z ) ) + ", 0 }\n" +

                      "\t},\n" )

            f.write( after )

                # UNUSED : Screen coords
                      
                # ~ s = objVertWtoS( scene, camera, portal )
                
                # ~ f.write("\t{\n\t\t" + 
                            
                            # ~ "{ " + str( int (s[3].x ) ) + ", " + str( int (s[3].y ) ) + ", " + str( int (s[3].z ) ) + ", 0 },\n\t\t" +
                
                            # ~ "{ " + str( int (s[2].x ) ) + ", " + str( int (s[2].y ) ) + ", " + str( int (s[2].z ) ) + ", 0 },\n\t\t" +
                            
                            # ~ "{ " + str( int (s[0].x ) ) + ", " + str( int (s[0].y ) ) + ", " + str( int (s[0].z ) ) + ", 0 },\n\t\t" +
                            
                            # ~ "{ " + str( int (s[1].x ) ) + ", " + str( int (s[1].y ) ) + ", " + str( int (s[1].z ) ) + ", 0 }\n" +

                      # ~ "\t},\n" )
            
            f.write("\t" + str( len( visibleTarget ) ) + ",\n" +
            
                    "\t{\n")

            for target in range( len( visibleTarget ) ) :
                
                f.write( "\t\t&" + fileName + "_mesh" + CleanName(visibleTarget[target].name) )
                    
                if target < len(visibleTarget) - 1:
                    
                    f.write(",\n")
                    
            f.write("\n\t}\n" +
            
                    "};\n\n")
            
        # Write camera angles in an array for loops
        
        f.write("CAMANGLE * " + fileName + "_camAngles[" + str(len(camAngles)) + "] = {\n")
        
        for camera in camAngles:
        
            prefix = CleanName(camera.name)     
        
            f.write("\t&" + fileName + "_camAngle_" + prefix + ",\n")
        
        f.write("};\n\n")
        
        # Feed to level_symbols
        
        level_symbols.append( "CAMANGLE * " + fileName + "_camAngles[" + str(len(camAngles)) + "]" )
        
    ## Spatial Partitioning
    
        # Planes in the level - dict of strings 

        LvlPlanes = {}

        # Objects in the level  - dict of strings

        LvlObjects = {}

        # Link objects to their respective plane

        PlanesObjects = defaultdict(dict) 
        
        PlanesRigidBodies = defaultdict(dict) 
        
        # List of objects that can travel ( actor , moveable props...)
        
        Moveables = []

        # Store starting plane for moveables

        PropPlane = defaultdict(dict)

        # Store XY1, XY2 values

        Xvalues = []

        Yvalues = []

        # Find planes and objects bounding boxes
        
        # Planes first
        
        for o in bpy.data.objects:
        
            # Only loop through meshes
        
            if o.type == 'MESH' and not o.data.get('isPortal'):
        
                # Get Level planes coordinates
        
                if o.data.get('isLevel'):
                   
                    # World matrix is used to convert local to global coordinates
                    
                    mw = o.matrix_world
                   
                    for v in bpy.data.objects[o.name].data.vertices:
                   
                        # Convert local to global coords
                        
                        Xvalues.append( (mw * v.co).x )
                   
                        Yvalues.append( (mw * v.co).y )
                   
                    LvlPlanes[o.name] = {'x1' : min(Xvalues),
                                         
                                         'y1' : min(Yvalues),
                                         
                                         'x2' : max(Xvalues),
                                         
                                         'y2' : max(Yvalues)}
                                         
                    # Clear X/Y lists for next iteration
                    
                    Xvalues = []
                   
                    Yvalues = []
                
                # For each object not a plane, get its coordinates
                
                if not o.data.get('isLevel'):
                    
                    # World matrix is used to convert local to global coordinates
                    
                    mw = o.matrix_world

                    for v in bpy.data.objects[o.name].data.vertices:
                    
                        # Convert local to global coords
                    
                        Xvalues.append( (mw * v.co).x )
                    
                        Yvalues.append( (mw * v.co).y )
                    
                    LvlObjects[o.name] = {'x1' : min(Xvalues),
                    
                                          'y1' : min(Yvalues),
                    
                                          'x2' : max(Xvalues),
                    
                                          'y2' : max(Yvalues)}

                    # Clear X/Y lists for next iteration

                    Xvalues = []

                    Yvalues = []
                    
                    # Add objects that can travel to the 
                    
                    if o.data.get("isRigidBody"):
                        
                        Moveables.append(o)

        # Declare LvlPlanes nodes to avoid declaration dependency issues
            
        # ~ for k in LvlPlanes.keys():
            
            # ~ f.write("NODE node" + CleanName(k) + ";\n\n")

        # Sides of the plane to check

        checkSides = [ 
                       ['N','S'], 
                       
                       ['S','N'], 
                       
                       ['W','E'], 
                       
                       ['E','W'] 
                     
                     ]

        # Generate a dict : 
        
        # ~ { 
        # ~     'S' : [] 
        # ~     'N' : [] list of planes connected to this plane, and side they're on
        # ~     'W' : [] 
        # ~     'E' : []
        # ~     'objects' : [] list of objects on this plane
        # ~     ''
        # ~ }

        overlappingObject = []

        for p in LvlPlanes:
            
            # Find objects on plane
            
            for o in LvlObjects:
                
                # If object is overlapping between several planes
                
                if isInPlane(LvlPlanes[p], LvlObjects[o]) > 1:
                    
                    # Object not actor
                    
                    if o != actorPtr:
                        
                        # Object not in list
                        
                        if o not in overlappingObject:
                        
                            overlappingObject.append(o)
                            
                        else:
                            
                            overlappingObject.remove(o)
                            
                            # Add this object to the plane's list
                    
                            if 'objects' in PlanesObjects[p]:
                        
                                PlanesObjects[p]['objects'].append(o)
                        
                            else:
                        
                                PlanesObjects[p] = { 'objects' : [o] }
                    
                # If object is above plane
                
                if isInPlane(LvlPlanes[p], LvlObjects[o]) == 1:
                
                    # Add all objects but the actor
                    
                    if o != actorPtr:
                        
                        # Add this object to the plane's list
                    
                        if 'objects' in PlanesObjects[p]:
                    
                            PlanesObjects[p]['objects'].append(o)
                    
                        else:
                    
                            PlanesObjects[p] = { 'objects' : [o] }
            
                    else:
                    
                        # If actor is on this plane, use it as starting node
                        
                        levelPtr = p
                        
                        nodePtr = p
        
            
            # Add moveable objects in every plane
            
            for moveable in Moveables:
                
                # If moveable is not actor
                
                if moveable.data.get( 'isProp' ):
                
                    # If is in current plane, add it to the list
                    
                    if isInPlane( LvlPlanes[ p ], LvlObjects[ moveable.name ] ) :
                    
                        PropPlane[moveable] = p
                        
                if 'rigidbodies' in PlanesRigidBodies[p]:
        
                    if moveable.name not in PlanesRigidBodies[p]['rigidbodies']:
                
                        PlanesRigidBodies[ p ][ 'rigidbodies' ].append(CleanName( moveable.name ) )
                else:
                    
                    PlanesRigidBodies[p] = { 'rigidbodies' : [ CleanName(moveable.name) ] }
        
            # Find surrounding planes
            
            for op in LvlPlanes:
                
                # Loop on other planes
                
                if op is not p:
                    
                    # Check each side
                    
                    for s in checkSides:
                    
                        # If connected ('connected') plane exists...
                    
                        if checkLine(
                    
                            getSepLine(p, s[0])[0],
                            
                            getSepLine(p, s[0])[1],
                            
                            getSepLine(p, s[0])[2],
                            
                            getSepLine(p, s[0])[3],
                            
                            getSepLine(op, s[1])[0],
                            
                            getSepLine(op, s[1])[1],
                            
                            getSepLine(op, s[1])[2],
                            
                            getSepLine(op, s[1])[3]
                    
                             ) == 'connected' and (
                            
                            isInPlane( LvlPlanes[p], LvlPlanes[op] ) 
                            
                            ):
                            
                            # ... add it to the list
                            
                            if 'siblings' not in PlanesObjects[p]:
                                
                                PlanesObjects[p]['siblings'] = {}
                            
                            # If more than one plane is connected on the same side of the plane, 
                            # add it to the corresponding list    
                            
                            if s[0] in PlanesObjects[p]['siblings']:
                            
                                PlanesObjects[p]['siblings'][s[0]].append(op)
                            
                            else:
                            
                                PlanesObjects[p]['siblings'][s[0]] = [op]
            
            pName = CleanName(p)
            
            # Write SIBLINGS structure
            
            nSiblings = 0
            
            if 'siblings' in PlanesObjects[p]:

                if 'S' in PlanesObjects[ p ][ 'siblings' ]: 
                
                    nSiblings += len( PlanesObjects[ p ][ 'siblings' ][ 'S' ] )
                
                if 'N' in PlanesObjects[ p ][ 'siblings' ]: 
                    
                    nSiblings += len( PlanesObjects[ p ][ 'siblings' ][ 'N' ] )
                    
                if 'E' in PlanesObjects[ p ][ 'siblings' ]: 
                    
                    nSiblings += len( PlanesObjects[ p ][ 'siblings' ][ 'E' ] )
                    
                if 'W' in PlanesObjects[ p ][ 'siblings' ]: 
                    
                    nSiblings += len( PlanesObjects[ p ][ 'siblings' ][ 'W' ] )
                
            f.write("SIBLINGS " + fileName + "_node" + pName + "_siblings = {\n" + 
            
                    "\t" + str(nSiblings) + ",\n" +
            
                    "\t{\n")
            
            if 'siblings' in PlanesObjects[p]:
            
                i = 0

                for side in PlanesObjects[p]['siblings']:
                
                    for sibling in PlanesObjects[p]['siblings'][side]:
                
                        f.write("\t\t&" + fileName + "_node" + CleanName(sibling) )
                        
                        if i < ( nSiblings - 1 ) :
                    
                            f.write(",")
                        
                        i += 1
                        
                        f.write("\n")
                
            else:
                f.write("\t\t0\n")
            
            f.write("\t}\n" +
            
                    "};\n\n")
            
            # Feed to level_symbols
        
            level_symbols.append( "SIBLINGS " + fileName + "_node" + pName + "_siblings" )
            
            # Write CHILDREN static objects structure
            
            f.write("CHILDREN " + fileName + "_node" + pName + "_objects = {\n")
            
            if 'objects' in PlanesObjects[p]:
            
                f.write("\t" + str(len(PlanesObjects[p]['objects'])) + ",\n" +
                        "\t{\n")
                
                i = 0
                
                for obj in PlanesObjects[p]['objects']:
                    
                    f.write( "\t\t&" + fileName + "_mesh" + CleanName(obj))
                    
                    if i < len(PlanesObjects[p]['objects']) - 1:
                    
                        f.write(",")
                    
                    i += 1
                    
                    f.write("\n")
                    
            else: 
                
                f.write("\t0,\n" + 
                        "\t{\n\t\t0\n")
            
            f.write("\t}\n" +
                    "};\n\n")
            
            # Feed to level_symbols
        
            level_symbols.append( "CHILDREN " + fileName + "_node" + pName + "_objects" )
            
            # Write CHILDREN rigidbodies structure
            
            f.write("CHILDREN " + fileName + "_node" + pName + "_rigidbodies = {\n")
            
            if 'rigidbodies' in PlanesRigidBodies[p]:
            
                f.write("\t" + str(len(PlanesRigidBodies[p]['rigidbodies'])) + ",\n" +
                        "\t{\n")
                
                i = 0
                
                for obj in PlanesRigidBodies[p]['rigidbodies']:
                    
                    f.write( "\t\t&" + fileName + "_mesh" + CleanName(obj))
                    
                    if i < len(PlanesRigidBodies[p]['rigidbodies']) - 1:
                    
                        f.write(",")
                    
                    i += 1
                    
                    f.write("\n")
                    
            else: 
                
                f.write("\t0,\n" + 
                        "\t{\n\t\t0\n")
            
            f.write("\t}\n" +
                    "};\n\n")
            
            # Feed to level_symbols
        
            level_symbols.append( "CHILDREN " + fileName + "_node" + pName + "_rigidbodies" )
            
            # Write NODE structure
                    
            f.write( "NODE " + fileName + "_node" + pName + " = {\n" +
            
                     "\t&" + fileName + "_mesh" + pName + ",\n" +
            
                     "\t&" + fileName + "_node" + pName + "_siblings,\n" +
            
                     "\t&" + fileName + "_node" + pName + "_objects,\n" +
            
                     "\t&" + fileName + "_node" + pName + "_rigidbodies\n" +
            
                     "};\n\n" )
            
            # Feed to level_symbols
        
            level_symbols.append( "NODE " + fileName + "_node" + pName )
        
        f.write("MESH * " + fileName + "_actorPtr = &" + fileName + "_mesh" + CleanName(actorPtr) + ";\n")
        
        f.write("MESH * " + fileName + "_levelPtr = &" + fileName + "_mesh" + CleanName(levelPtr) + ";\n")
        
        f.write("MESH * " + fileName + "_propPtr  = &" + fileName + "_mesh" + propPtr + ";\n\n")
        
        f.write("CAMANGLE * " + fileName + "_camPtr =  &" + fileName + "_camAngle_" + CleanName(defaultCam) + ";\n\n")

        f.write("NODE * " + fileName + "_curNode =  &" + fileName + "_node" + CleanName(nodePtr) + ";\n\n")

        # Feed to level_symbols
        
        level_symbols.append( "MESH * " + fileName + "_actorPtr" )

        level_symbols.append( "MESH * " + fileName + "_levelPtr" )

        level_symbols.append( "MESH * " + fileName + "_propPtr" )

        level_symbols.append( "CAMANGLE * " + fileName + "_camPtr" )

        level_symbols.append( "NODE * " + fileName + "_curNode" )

        # Write LEVEL struct
        
        f.write(
        
            "LEVEL " + fileName + " = {\n" +
    
            "\t&" + fileName + "_BGc,\n" +
            
            "\t&" + fileName + "_BKc,\n" +
            
            "\t&" + fileName + "_cmat,\n" +
            
            "\t&" + fileName + "_lgtmat,\n" +
            
            "\t(MESH **)&" + fileName + "_meshes,\n" +
            
            "\t&" + fileName + "_meshes_length,\n" +
            
            "\t&" + fileName + "_mesh" + CleanName(actorPtr)+ ",\n" +

            "\t&" + fileName + "_mesh" + CleanName(levelPtr)+ ",\n" +

            "\t&" + fileName + "_mesh" + propPtr + ",\n" +
                
            "\t&" + fileName + "_camAngle_" + CleanName(defaultCam) + ",\n" +
                
            "\t&" + fileName + "_camPath,\n" +
                
            "\t(CAMANGLE **)&" + fileName + "_camAngles,\n" +
                
            "\t&" + fileName + "_node" + CleanName(nodePtr) + ",\n" +
                
            # ~ "\t&" + fileName + "_meshPlan\n" +
            
            "};\n\n")

        # Set default camera back in Blender
        
        if defaultCam != 'NULL':
        
            bpy.context.scene.camera = bpy.data.objects[ defaultCam ]

        f.close()
        
        
        # Using a UGLY method here , sorry ! 
        # We're re-opening the file we just closed to substracts some values that were not available 
        # Fill in node in MESH structs

        # Get the file content

        f = open(os.path.normpath(level_c),"r")
        
        filedata = f.read()
        
        f.close()

        # Declare LvlPlanes nodes to avoid declaration dependency issues
        
        # Constuct and store the new string

        Node_declaration = ''

        

        for k in LvlPlanes.keys():
            
            Node_declaration += "NODE " + fileName + "_node" + CleanName(k) + ";\n\n"
            
            level_symbols.append( "NODE " + fileName + "_node" + CleanName(k) )
            
        # Do the substitution only once
        
        newdata = filedata.replace("NODE_DECLARATION\n", Node_declaration, 1)
        
        newdata = filedata.replace("NODE_DECLARATION\n", "")

        # Now substitute mesh name for corresponding plane's NODE

        for moveable in PropPlane:

            newdata = newdata.replace("subs_" + moveable.name, "&" + fileName + "_node" + PropPlane[moveable])

        # Subsitute mesh name with 0 in the other MESH structs
        
        newdata = sub("(?m)^\tsubs_.*$", "\t0,", newdata )
        
        # Open and write file
        
        f = open(os.path.normpath(level_c),"w")
        
        f.write( newdata )
        
        f.close()
        

## Level forward declarations (level.h)

        h = open(os.path.normpath(level_h),"w+")
        
        h.write( 
                
                '#pragma once\n\n' +
                
                '#include "../custom_types.h"\n\n'
                
                )
        
        for symbol in level_symbols:
            
            h.write( "extern " + symbol + ";\n\n")
        
        h.close()
        
        return {'FINISHED'};
 
def menu_func(self, context):
    
    self.layout.operator(ExportMyFormat.bl_idname, text="PSX Format(.c)");
 
def register():
    
    bpy.utils.register_module(__name__);
    
    bpy.types.INFO_MT_file_export.append(menu_func);
    
def unregister():
    
    bpy.utils.unregister_module(__name__);
    
    bpy.types.INFO_MT_file_export.remove(menu_func);
 
if __name__ == "__main__":
    
    register()