ExportAsFbxUponSave.py

#This script is meant to replace the save function (ctrl + s) in Blender
#Open up the add-ons tab within Blender prefs and import this script.
#Any updates to this add-on will require it to be uninstalled and installed again.
#Make sure to un-map regular saving. Right-click save in the file menu and remove the mapping.
#It will export an FBX that will have optimal settings for Unity, in the same folder as the .blend file.

#todo list:
#This crashes when you save a file for the first time, since there's no save path to save to... need to change this!!!
#Make SURE these settings are optimal.
#Option to convert periods to underscores in transform names, for more compatibility with old .blend files and Unity animations/avatar definitions.
#Maybe an option to export multiple objects as different fbx files, but I never used a workflow like this in Unity, I would just grab the generated meshes.
#Get this command to appear in the file menu, under Save and Save As.
#It only works in object mode...


bl_info = {
    "name": "Auto FBX Export",
    "blender": (2, 80, 0),
    "category": "Object",
}

import bpy
import os
import shutil

class SaveExportFBX(bpy.types.Operator):
    bl_idname = "object.save_and_export_fbx"
    bl_label = "Save and Export FBX"
    bl_options = {'REGISTER'}

    def execute(self, context):
        #This gets excecuted vvv

        #Do a normal save
        bpy.ops.wm.save_mainfile()

        #Get filepath
        filepath = bpy.data.filepath
        directory = os.path.dirname(filepath)
        fileName = bpy.path.basename(bpy.context.blend_data.filepath)
        fileName = os.path.splitext(fileName)[0]
        fullPath = os.path.join(directory, fileName + ".fbx")

        #Export as FBX to this path with settings.
        #Reference to these settings: https://docs.blender.org/api/current/bpy.ops.export_scene.html?highlight=fbx#bpy.ops.export_scene.fbx
        bpy.ops.export_scene.fbx(
                filepath=fullPath,
                check_existing=False,
                filter_glob="*.fbx",
                use_selection=False,
                use_active_collection=False,
                global_scale=1.0,
                apply_unit_scale=True,
                apply_scale_options='FBX_SCALE_UNITS',
                bake_space_transform=False,
                object_types={'ARMATURE', 'MESH'},
                use_mesh_modifiers=False,
                use_mesh_modifiers_render=False,
                mesh_smooth_type='OFF',
                use_subsurf=True,
                use_mesh_edges=False,
                use_tspace=True,
                use_custom_props=False,
                add_leaf_bones=False,
                primary_bone_axis='Y',
                secondary_bone_axis='X',
                use_armature_deform_only=False,
                armature_nodetype='NULL',
                bake_anim=True,
                bake_anim_use_all_bones=True,
                bake_anim_use_nla_strips=False,
                bake_anim_use_all_actions=True,
                bake_anim_force_startend_keying=False,
                bake_anim_step=1.0,
                bake_anim_simplify_factor=1.0,
                path_mode='AUTO',
                embed_textures=False,
                batch_mode='OFF',
                use_batch_own_dir=True,
                use_metadata=True,
                axis_forward='Z',
                axis_up='Y')

        print("done")
        #put a message in blender so you know when the FBX is done.
        #Is it possible to get this in green isntead of blue?
        self.report({'INFO'}, "Exported FBX Automatically!")
        return {'FINISHED'}

#This is supposed to add it to a menu somewhere
def menu_func(self, context):
    self.layout.operator(SaveExportFBX.bl_idname)

# stores keymaps
addon_keymaps = []

def register():
    bpy.utils.register_class(SaveExportFBX)

    # handle the keymap
    wm = bpy.context.window_manager
    km = wm.keyconfigs.addon.keymaps.new(name='Object Mode', space_type='EMPTY')

    kmi = km.keymap_items.new(SaveExportFBX.bl_idname, 'S', 'PRESS', ctrl=True, shift=False)

    addon_keymaps.append((km, kmi))


def unregister():
    bpy.utils.unregister_class(SaveExportFBX)

    # handle the keymap
    for km, kmi in addon_keymaps:
        km.keymap_items.remove(kmi)
    addon_keymaps.clear()


if __name__ == "__main__":
    register()