Fusion/UE5_blender_script.py

import bpy
import os
import xml.etree.ElementTree as ET

def custom_print(*args):
    message = ' '.join(map(str, args))
    for window in bpy.context.window_manager.windows:
        screen = window.screen
        for area in screen.areas:
            if area.type == 'CONSOLE':
                override = {'window': window, 'screen': screen, 'area': area}
                bpy.ops.console.scrollback_append(override, text=message, type="OUTPUT")

for material in bpy.data.materials:
    bpy.data.materials.remove(material, do_unlink=True)
                
for mesh in bpy.data.meshes:
    bpy.data.meshes.remove(mesh, do_unlink=True)

for image in bpy.data.images:
    bpy.data.images.remove(image, do_unlink=True)

# Set the input and output directories
wherethefilesare = 'output' # Set where the files are located from PD2ModelParser.exe
wheretosave = 'done' # Where you want to save the fixed files.
wherethetexturesare = 'textures' # Set where all the files are located

# Get the parent directory of the python file
dir_path = os.path.dirname(os.path.realpath(__file__))
parent_dir = os.path.abspath(os.path.join(dir_path, os.pardir))

# Make valid folder paths using os.path.join
input_directory = os.path.join(parent_dir, wherethefilesare)
output_directory = os.path.join(parent_dir, wheretosave)
texture_directory = os.path.join(parent_dir, wherethetexturesare)

custom_print("Input Directory:", input_directory)
custom_print("Output Directory:", output_directory)
custom_print("Texture Directory:", texture_directory)

def get_object_filepath(file_path):
    # Replace the extension with .object
    object_file_path = os.path.splitext(file_path)[0] + '.object'
    return object_file_path

def set_diffuse_texture_as_base_color(material, texture_path):
    # Create an image texture node
    texture_node = material.node_tree.nodes.new(type='ShaderNodeTexImage')
    texture_node.image = bpy.data.images.load(texture_path)

    # Get the principled BSDF shader node
    principled_bsdf = material.node_tree.nodes.get("Principled BSDF")

    # Connect the texture node to the base color input of the principled BSDF shader node
    material.node_tree.links.new(principled_bsdf.inputs["Base Color"], texture_node.outputs["Color"])

def process_xml_file(file_path):
    try:
        # Open the file and read its contents
        with open(file_path, 'r') as file:
            file_contents = file.read()

        # Parse the XML string
        root = ET.fromstring(file_contents)

        # Find the value of the 'materials' attribute
        materials_value = root.find('.//diesel').get('materials')

        # custom_print the result
        custom_print(f"The value of 'materials' is: {materials_value}")

        # return the materials_value
        return materials_value

    except Exception as e:
        custom_print(f"Error processing XML file: {e}")
        return None

def get_diffuse_texture_name(xml_file_path, material_name):
    """
    Extracts the name of the texture in <diffuse_texture> for a given material name in an XML file.

    Parameters:
    - xml_file_path (str): The path to the XML file.
    - material_name (str): The name of the material to search for.

    Returns:
    - str: The name of the texture if the material is found, else None.
    """
    try:
        # Parse the XML file
        tree = ET.parse(xml_file_path)
        root = tree.getroot()

        # Find the material with the specified name
        target_material = root.find(f".//material[@name='{material_name}']")

        if target_material is not None:
            # Find the 'diffuse_texture' element within the material
            diffuse_texture_element = target_material.find("diffuse_texture")

            if diffuse_texture_element is not None:
                # Get the value of the 'file' attribute in <diffuse_texture> and extract the texture name
                diffuse_texture_path = diffuse_texture_element.get("file")
                texture_name = diffuse_texture_path.split("/")[-1]  # Extracting the texture name from the file path
                return f"{texture_name}.dds"
            else:
                custom_print(f"Diffuse texture not found for material '{material_name}' in the XML file.")
                return None
        else:
            custom_print(f"Material '{material_name}' not found in the XML file.")
            return None
    except FileNotFoundError:
        custom_print(f"File not found: {xml_file_path}")
        return None
    except Exception as e:
        custom_print(f"Error while processing {xml_file_path}: {e}")
        return None

# Main function to process the object
def process_gltf(file_path):
    # Get the filename without extension
    file_name = os.path.splitext(os.path.basename(file_path))[0]

    # Clear existing mesh objects in the scene
    bpy.ops.object.select_all(action='SELECT')
    bpy.ops.object.delete()

    # Import the GLTF file
    bpy.ops.import_scene.gltf(filepath=file_path)

    # Deselect all objects
    bpy.ops.object.select_all(action='DESELECT')

    # Find the mesh with the highest poly count
    max_poly_count = 0
    object_with_max_poly_count = None

    for obj in bpy.context.scene.objects:
        if obj.type == 'MESH' and len(obj.data.polygons) > max_poly_count:
            max_poly_count = len(obj.data.polygons)
            object_with_max_poly_count = obj

    # Select the parent (root) object of the object with the highest poly count
    if object_with_max_poly_count:
        root_object = object_with_max_poly_count.parent
        if root_object:
            root_object.select_set(True)

            # Set the 3D cursor as the pivot point for the transformation
            bpy.context.scene.tool_settings.transform_pivot_point = 'CURSOR'

            # Set the location of the selected object to the 3D cursor
            root_object.location = bpy.context.scene.cursor.location

            # Set the transform rotation mode to XYZ Euler
            root_object.rotation_mode = 'XYZ'

            # Add the specified rotation to the object
            root_object.rotation_euler[0] = -1.5708  # X-axis rotation, -90 degrees in radians
            root_object.rotation_euler[1] = 0  # Y-axis rotation, 0 degrees in radians
            root_object.rotation_euler[2] = 0  # Z-axis rotation, 0 degrees in radians

            # Select all objects in the scene
            bpy.ops.object.select_all(action='SELECT')

            # Apply all transforms to the selected objects
            bpy.ops.object.transform_apply(location=True, rotation=True, scale=True)

            # Select meshes that start with the name "g_"
            bpy.ops.object.select_all(action='DESELECT')
            for obj in bpy.context.scene.objects:
                if obj.type == 'MESH' and obj.name.startswith("g_"):
                    obj.select_set(True)

            # Invert the selection and delete the unselected objects
            bpy.ops.object.select_all(action='INVERT')
            bpy.ops.object.delete()

            # Join remaining objects together
            bpy.ops.object.select_all(action='DESELECT')
            #Mesh objects
            MSH_OBJS = [m for m in bpy.context.scene.objects if m.type == 'MESH']

            # Check if there are any objects in the list
            if MSH_OBJS:
                for OBJS in MSH_OBJS:
                    # Select all mesh objects
                    OBJS.select_set(state=True)

                    # Makes one active
                    bpy.context.view_layer.objects.active = OBJS

                # Joins objects
                bpy.ops.object.join()

                # Rename the object to the filename
                bpy.ops.object.select_all(action='DESELECT')
                bpy.ops.object.select_by_type(type='MESH')
                bpy.context.selected_objects[0].name = file_name

                # Get mat config
                object_file_path = get_object_filepath(file_path)
                material_config = process_xml_file(object_file_path)

                # Loop each material slot get the name
                for material_slot in bpy.context.selected_objects[0].material_slots:
                    # Get the material in the current slot
                    material = material_slot.material

                    # Get the material name
                    material_name = material.name

                    # Initialize the variable with a default value
                    diffuse_texture_name = None

                    # Get the diffuse texture name using get_diffuse_texture_name()
                     # Makes this not hardcoded
                    if material_config is not None:
                        get_material_config_path = material_config.replace("units/", f"{input_directory}/") + ".material_config"
                        diffuse_texture_name = get_diffuse_texture_name(get_material_config_path, material_name)
                    else:
                        custom_print("Material config is None. Handle this case accordingly.")
    
                    # CRASHES WHEN IT CANT FIND THE FILES TO LAZY TO FIX IT JUST HAVE THE FILES
                    # Check if the texture exists
                    if diffuse_texture_name:
                        # Construct the full path to the texture
                        texture_path = os.path.join(texture_directory, diffuse_texture_name)

                        # Check if the texture file exists before trying to load it
                        if os.path.exists(texture_path):
                            # Set the diffuse texture as the base color
                            set_diffuse_texture_as_base_color(material, texture_path)
                        else:
                            custom_print(f"Texture not found for material {material_name}: {texture_path}")
                    else:
                        custom_print(f"No diffuse texture found for material {material_name}")


                # Ensure the output directory exists
                output_path = os.path.join(output_directory, os.path.relpath(file_path, start=input_directory))
                os.makedirs(os.path.dirname(output_path), exist_ok=True)

                # Select all objects in the scene
                bpy.ops.object.select_all(action='SELECT')
                # Export as .gltf to the output directory
                bpy.ops.export_scene.gltf(filepath=output_path, export_format='GLTF_EMBEDDED', use_selection=True)

                # Remove materials and meshes
                for material in bpy.data.materials:
                    bpy.data.materials.remove(material, do_unlink=True)

                for mesh in bpy.data.meshes:
                    bpy.data.meshes.remove(mesh, do_unlink=True)
                
                for image in bpy.data.images:
                    bpy.data.images.remove(image, do_unlink=True)

            else:
                custom_print("No objects selected.")
            
            for material in bpy.data.materials:
                bpy.data.materials.remove(material, do_unlink=True)
                
            for mesh in bpy.data.meshes:
                bpy.data.meshes.remove(mesh, do_unlink=True)

            for image in bpy.data.images:
                bpy.data.images.remove(image, do_unlink=True)


# Recursive function to process all .gltf files in a directory
def process_directory(directory):
    for root, dirs, files in os.walk(directory):
        for file in files:
            if file.lower().endswith('.gltf'):
                file_path = os.path.join(root, file)
                process_gltf(file_path)

# Start processing from the input directory
process_directory(input_directory)