__init__.py

""" Part of the YABEE
"""

import bpy
from bpy_extras.io_utils import ExportHelper
from bpy.props import *
from .yabee_libs import egg_writer

bl_info = {
    "name": "PRPEE Panda3D EGG format",
    "author": "Andrey (Ninth) Arbuzov - Galym Kerimbekov",
    "blender": (3, 0, 0),
    "location": "File > Import-Export",
    "description": "Egg Exporter for Blender 2.8 and Panda3D with RenderPipeline",
    "warning": "May contain bugs. Make backup of your file before use.",
    "wiki_url": "https://github.com/kergalym/PRPEE",
    "tracker_url": "https://github.com/kergalym/PRPEE",
    "category": "Import-Export"}


# --------------- Properties --------------------


class EGGBakeProperty(bpy.types.PropertyGroup):
    """ Texture baker settings """
    res_x: IntProperty(name="Res. X", default=512)
    res_y: IntProperty(name="Res. Y", default=512)
    export: BoolProperty(default=False)

    def draw(self, row, name):
        row.prop(self, "res_x")
        row.prop(self, "res_y")
        row.prop(self, "export")
        row.label(text=name)


class EGGAnimationProperty(bpy.types.PropertyGroup):
    """ One animation record """
    name: StringProperty(name="Name", default="Unknown")
    from_frame: IntProperty(name="From", default=1)
    to_frame: IntProperty(name="To", default=2)
    fps: IntProperty(name="FPS", default=24)

    def __get_idx(self):
        return list(bpy.context.scene.yabee_settings.opt_anim_list.anim_collection).index(self)

    index = property(__get_idx)


class EGGAnimList(bpy.types.PropertyGroup):
    """ Animations list settings """
    active_index: IntProperty()
    anim_collection: CollectionProperty(type=EGGAnimationProperty)

    def get_anim_dict(self):
        d = {}
        for anim in self.anim_collection:
            d[anim.name] = (anim.from_frame, anim.to_frame, anim.fps)
        return d


class YABEEProperty(bpy.types.PropertyGroup):
    """ Main YABEE class for store settings """
    opt_tbs_proc: EnumProperty(
        name="TBS generation",
        description="Export all textures as MODULATE or bake texture layers",
        items=(('PANDA', "Panda", "Use egg-trans to calculate TBS (Need installed Panda3D)."),
               ('BLENDER', "Blender", "Use Blender to calculate TBS"),
               ('NO', "No", "Do not generate TBS.")),
        default='BLENDER',
    )

    opt_export_uv_as_texture: BoolProperty(
        name="UV as texture",
        description="export uv image as texture",
        default=False,
    )

    opt_copy_tex_files: BoolProperty(
        name="Copy texture files",
        description="Copy texture files together with EGG",
        default=True,
    )

    opt_anims_from_actions: BoolProperty(
        name="All actions as animations",
        description="Export an animation for every Action",
        default=False,
    )

    opt_separate_anim_files: BoolProperty(
        name="Separate animation files",
        description="Write an animation data into the separate files",
        default=True,
    )

    opt_anim_only: BoolProperty(
        name="Animation only",
        description="Write only animation data",
        default=False,
    )

    opt_tex_path: StringProperty(
        name="Tex. path",
        description="Path for the copied textures. Relative to the main EGG file dir",
        default='./tex',
    )

    opt_autoselect: BoolProperty(
        name="Automatic selection",
        description="Automatically select all objects in the scene",
        default=True,
    )

    opt_apply_object_transform: BoolProperty(
        name="Apply object transform",
        description="Apply object transform as default",
        default=False,
    )

    opt_merge_actor: BoolProperty(
        name="Merge actor",
        description="Merge meshes, armatured by single Armature",
        default=False,
    )

    opt_apply_modifiers: BoolProperty(
        name="Apply modifiers",
        description="Apply modifiers on exported objects (except Armature)",
        default=True,
    )

    opt_apply_collide_tag: BoolProperty(
        name="Apply Collide tag",
        description="Add Collide tag on exported objects",
        default=False,
    )

    opt_rp_compat: BoolProperty(
        name="RP compat",
        description="Enable compatibility with RenderPipeline",
        default=False,
    )

    opt_pview: BoolProperty(
        name="Pview",
        description="Run pview after exporting",
        default=False,
    )

    opt_use_loop_normals: BoolProperty(
        name="Use custom vertex normals",
        description="Use loop normals created by applying 'Normal Edit' Modifier as vertex normals.",
        default=False,
    )

    opt_force_export_vertex_colors: BoolProperty(
        name="Force export vertex colors",
        description="when False, writes only vertex color if polygon material is using it ",
        default=False,
    )

    opt_anim_list: PointerProperty(type=EGGAnimList)

    first_run: BoolProperty(default=True)

    def draw(self, layout):
        row = layout.row()
        row.operator("export.yabee_reset_defaults", icon="FILE_REFRESH", text="Reset to defaults")
        row.operator("export.yabee_help", icon="URL", text="Help")

        layout.row().label(text='Animation:')
        layout.row().prop(self, 'opt_anims_from_actions')
        if not self.opt_anims_from_actions:
            row = layout.row()
            row.template_list("UI_UL_list", "anim_collection",
                              self.opt_anim_list,
                              "anim_collection",
                              self.opt_anim_list,
                              "active_index",
                              rows=2)
            col = row.column(align=True)
            col.operator("export.egg_anim_add", icon='ZOOM_IN', text="")
            col.operator("export.egg_anim_remove", icon='ZOOM_OUT', text="")
            sett = self.opt_anim_list
            if len(sett.anim_collection):
                p = sett.anim_collection[sett.active_index]
                layout.row().prop(p, 'name')
                row = layout.row(align=True)
                row.prop(p, 'from_frame')
                row.prop(p, 'to_frame')
                row.prop(p, 'fps')

        layout.separator()

        layout.row().label(text='Options:')
        layout.row().prop(self, 'opt_anim_only')
        layout.row().prop(self, 'opt_separate_anim_files')
        if not self.opt_anim_only:
            layout.row().prop(self, 'opt_tbs_proc')

            if self.opt_copy_tex_files:
                box = layout.box()
                box.row().prop(self, 'opt_tex_path')
            else:
                layout.row().prop(self, 'opt_copy_tex_files')
            layout.row().prop(self, 'opt_autoselect')
            layout.row().prop(self, 'opt_apply_object_transform')
            layout.row().prop(self, 'opt_merge_actor')
            layout.row().prop(self, 'opt_apply_modifiers')
            layout.row().prop(self, 'opt_apply_collide_tag')
            layout.row().prop(self, 'opt_rp_compat')
            layout.row().prop(self, 'opt_pview')
            layout.row().prop(self, 'opt_use_loop_normals')
            layout.row().prop(self, 'opt_force_export_vertex_colors')

    def check_warns(self, context):
        warns = []
        if len(context.selected_objects) == 0:
            warns.append('Nothing to export. Please, select "Mesh" and \n' + \
                         '"Armature" or "Curve" objects.')
        for name, param in self.opt_anim_list.get_anim_dict().items():
            if param[0] == param[1]:
                warns.append(('Animation "%s" has same "from" and "to" frames\n' + \
                              'Keep in mind that "To frame" value is exclusive.\n' + \
                              'It means that in this case your animation contains\n' + \
                              'zero of frames. YABEE will automatically add one frame\n' + \
                              'to the "to" value of "%s" animation.') % (name, name))

        return warns

    def reset_defaults(self):
        self.opt_tbs_proc = 'NO'
        self.opt_export_uv_as_texture = False
        self.opt_copy_tex_files = True
        self.opt_separate_anim_files = True
        self.opt_anim_only = False
        self.opt_tex_path = './tex'
        self.opt_autoselect = False
        self.opt_apply_object_transform = False
        self.opt_merge_actor = False
        self.opt_apply_modifiers = True
        self.opt_apply_collide_tag = False
        self.opt_rp_compat = False
        self.opt_pview = False
        self.opt_use_loop_normals = False
        self.opt_force_export_vertex_colors = False

        while self.opt_anim_list.anim_collection[:]:
            bpy.ops.export.egg_anim_remove('INVOKE_DEFAULT')
        self.first_run = False


# ------------------ Operators ----------------------------------
class YABEEHelp(bpy.types.Operator):
    bl_idname = "export.yabee_help"
    bl_label = "YABEE Help."

    def execute(self, context):
        bpy.ops.wm.url_open("INVOKE_DEFAULT", url="http://www.panda3d.org/forums/viewtopic.php?t=11441")
        return {"FINISHED"}


class WarnDialog(bpy.types.Operator):
    """ Warning messages operator """
    bl_idname = "export.yabee_warnings"
    bl_label = "YABEE Warnings."

    def draw(self, context):
        warns = context.scene.yabee_settings.check_warns(context)
        for warn in warns:
            for n, line in enumerate(warn.splitlines()):
                if n == 0:
                    self.layout.row().label(text=line, icon="ERROR")
                else:
                    self.layout.row().label(text='    ' + line, icon="NONE")

    def execute(self, context):
        # print("Dialog Runs")
        return {'FINISHED'}

    def invoke(self, context, event):
        wm = context.window_manager
        return wm.invoke_props_dialog(self)


class ResetDefault(bpy.types.Operator):
    ''' Reset YABEE settings to default operator '''
    bl_idname = "export.yabee_reset_defaults"
    bl_label = "YABEE reset default settings"

    def execute(self, context):
        context.scene.yabee_settings.reset_defaults()
        return {'FINISHED'}


class AddAnim(bpy.types.Operator):
    """ Add animation record operator """
    bl_idname = "export.egg_anim_add"
    bl_label = "Add EGG animation"

    def execute(self, context):
        prop = context.scene.yabee_settings.opt_anim_list.anim_collection.add()
        prop.name = 'Anim' + str(prop.index)
        return {'FINISHED'}


class RemoveAnim(bpy.types.Operator):
    ''' Remove active animation record operator '''
    bl_idname = "export.egg_anim_remove"
    bl_label = "Remove EGG animation"

    def execute(self, context):
        sett = context.scene.yabee_settings.opt_anim_list
        sett.anim_collection.remove(sett.active_index)
        if len(sett.anim_collection):
            if sett.active_index not in [p.index for p in sett.anim_collection]:
                sett.active_index = sett.anim_collection[-1].index
        return {'FINISHED'}


class ExportPanda3DEGG(bpy.types.Operator, ExportHelper):
    """ Export selected to the Panda3D EGG format """
    bl_idname = "export.panda3d_egg"
    bl_label = "Export to Panda3D EGG"

    # ExportHelper mixin class uses this
    filename_ext = ".egg"

    filter_glob: StringProperty(
        default="*.egg",
        options={'HIDDEN'},
    )

    filepath: bpy.props.StringProperty(subtype="FILE_PATH")

    def execute(self, context):
        import importlib
        importlib.reload(egg_writer)
        sett = context.scene.yabee_settings
        errors = egg_writer.write_out(self.filepath,
                                      sett.opt_anim_list.get_anim_dict(),
                                      sett.opt_anims_from_actions,
                                      sett.opt_export_uv_as_texture,
                                      sett.opt_separate_anim_files,
                                      sett.opt_anim_only,
                                      sett.opt_copy_tex_files,
                                      sett.opt_tex_path,
                                      sett.opt_tbs_proc,
                                      sett.opt_autoselect,
                                      sett.opt_apply_object_transform,
                                      sett.opt_merge_actor,
                                      sett.opt_apply_modifiers,
                                      sett.opt_apply_collide_tag,
                                      sett.opt_rp_compat,
                                      sett.opt_pview,
                                      sett.opt_use_loop_normals,
                                      sett.opt_force_export_vertex_colors)
        if not errors:
            return {'FINISHED'}
        else:
            rep_msg = ''
            if 'ERR_UNEXPECTED' in errors:
                rep_msg += 'Unexpected error during export! See console for traceback.\n'
            if 'ERR_MK_HIERARCHY' in errors:
                rep_msg += 'Error while creating hierarchy. Check parent objects and armatures.'
            if 'ERR_MK_OBJ' in errors:
                rep_msg += 'Unexpected error while creating object. See console for traceback.'
            self.report({'ERROR'}, rep_msg)
            return {'CANCELLED'}

    def invoke(self, context, evt):
        if context.scene.yabee_settings.first_run:
            context.scene.yabee_settings.reset_defaults()
        return ExportHelper.invoke(self, context, evt)

    def draw(self, context):
        warns = context.scene.yabee_settings.check_warns(context)
        if warns:
            self.layout.row().operator('export.yabee_warnings', icon='ERROR', text='Warning!')
        context.scene.yabee_settings.draw(self.layout)


def menu_func_export(self, context):
    self.layout.operator(ExportPanda3DEGG.bl_idname, text="Panda3D (.egg)")


classes = (
    EGGBakeProperty,
    EGGAnimationProperty,
    EGGAnimList,
    YABEEProperty,
    YABEEHelp,
    WarnDialog,
    ResetDefault,
    AddAnim,
    RemoveAnim,
    ExportPanda3DEGG
)


def register():
    for cls in classes:
        bpy.utils.register_class(cls)

    # Good or bad, but I'll store settings in the scene
    bpy.types.Scene.yabee_settings = PointerProperty(type=YABEEProperty)
    # Hack again. I use custom property to be able to get basic
    # object name in the copy of the scene.
    bpy.types.Object.yabee_name = StringProperty(name="YABEE_Name", default="Unknown")
    bpy.types.Mesh.yabee_name = StringProperty(name="YABEE_Name", default="Unknown")
    bpy.types.Material.yabee_name = StringProperty(name="YABEE_Name", default="Unknown")
    # Can't directly add property to MaterialTextureSlot ("this type doesn't support IDProperties"),
    # so this stores original names for each embedded texture slot
    # in a string like: "Texture\1Texture2\1..." (see NAME_SEPARATOR)
    bpy.types.Material.yabee_texture_slots = StringProperty(name="YABEE_Texture_Slots", default="Unknown")
    bpy.types.Texture.yabee_name = StringProperty(name="YABEE_Name", default="Unknown")
    bpy.types.Armature.yabee_name = StringProperty(name="YABEE_Name", default="Unknown")
    bpy.types.Curve.yabee_name = StringProperty(name="YABEE_Name", default="Unknown")
    # bpy.types.ShapeKey.yabee_name = StringProperty(name="YABEE_Name", default="Unknown")
    bpy.types.Key.yabee_name = StringProperty(name="YABEE_Name", default="Unknown")
    bpy.types.Image.yabee_name = StringProperty(name="YABEE_Name", default="Unknown")
    bpy.types.Bone.yabee_name = StringProperty(name="YABEE_Name", default="Unknown")
    bpy.types.PoseBone.yabee_name = StringProperty(name="YABEE_Name", default="Unknown")

    bpy.types.TOPBAR_MT_file_export.append(menu_func_export)
    # Add link for export function to use in another addon
    __builtins__['p3d_egg_export'] = egg_writer.write_out


def unregister():
    for cls in classes:
        bpy.utils.unregister_class(cls)

    bpy.types.TOPBAR_MT_file_import.remove(menu_func_export)
    del (__builtins__['p3d_egg_export'])


if __name__ == "__main__":
    register()