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Add support for importing and exporting .blend files
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Lets you drag or place .blend files in the project folder and it will import the files.

An editor setting sets the location of the blender binary. A empty setting means the feature is disabled.

Checks for Blender 3.0's gltf2 keep texture option.
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@fire
fire committed Nov 12, 2021
1 parent 7d2900e commit 5156331
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10 changes: 10 additions & 0 deletions modules/gltf_blend/SCsub
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#!/usr/bin/env python

Import("env")
Import("env_modules")

env_blend = env_modules.Clone()
env_blend.Prepend(CPPPATH=["."])

# Godot's own source files
env_blend.add_source_files(env.modules_sources, "*.cpp")
17 changes: 17 additions & 0 deletions modules/gltf_blend/config.py
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def can_build(env, platform):
return not env["disable_3d"]


def configure(env):
pass


def get_doc_classes():
return [
"EditorSceneFormatImporterBlend",
"SceneExporterBlendPlugin",
]


def get_doc_path():
return "doc_classes"
9 changes: 9 additions & 0 deletions modules/gltf_blend/doc_classes/EditorSceneFormatImporterBlend.xml
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<?xml version="1.0" encoding="UTF-8" ?>
<class name="EditorSceneFormatImporterBlend" inherits="EditorSceneFormatImporter" version="4.0">
<brief_description>
</brief_description>
<description>
</description>
<tutorials>
</tutorials>
</class>
124 changes: 124 additions & 0 deletions modules/gltf_blend/editor_scene_exporter_blend_plugin.cpp
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/*************************************************************************/
/* editor_scene_exporter_blend_plugin.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/

#if TOOLS_ENABLED
#include "editor_scene_exporter_blend_plugin.h"
#include "core/config/project_settings.h"
#include "core/core_bind.h"
#include "core/error/error_list.h"
#include "core/object/object.h"
#include "core/templates/vector.h"
#include "editor/editor_file_system.h"
#include "editor/editor_node.h"
#include "modules/gltf/gltf_document.h"
#include "modules/gltf/gltf_state.h"
#include "scene/3d/mesh_instance_3d.h"
#include "scene/gui/check_box.h"
#include "scene/main/node.h"

String SceneExporterBlendPlugin::get_name() const {
return "ConvertBlend";
}

bool SceneExporterBlendPlugin::has_main_screen() const {
return false;
}

SceneExporterBlendPlugin::SceneExporterBlendPlugin(EditorNode *p_node) {
editor = p_node;
file_export_lib = memnew(EditorFileDialog);
editor->get_gui_base()->add_child(file_export_lib);
file_export_lib->connect("file_selected", callable_mp(this, &SceneExporterBlendPlugin::_blend_dialog_action));
file_export_lib->set_title(TTR("Export Library"));
file_export_lib->set_file_mode(EditorFileDialog::FILE_MODE_SAVE_FILE);
file_export_lib->set_access(EditorFileDialog::ACCESS_FILESYSTEM);
file_export_lib->clear_filters();
file_export_lib->add_filter("*.blend");
file_export_lib->set_title(TTR("Export Mesh Blend"));
String gltf_scene_name = TTR("Export Blend...");
add_tool_menu_item(gltf_scene_name, callable_mp(this, &SceneExporterBlendPlugin::convert_scene_to_blend));
}

void SceneExporterBlendPlugin::_blend_dialog_action(String p_file) {
Node *root = editor->get_tree()->get_edited_scene_root();
if (!root) {
editor->show_accept(TTR("This operation can't be done without a scene."), TTR("OK"));
return;
}
List<String> deps;
Ref<GLTFDocument> doc;
doc.instantiate();
String blend_to_scene_setting = "import bpy, os, sys;bpy.context.scene.render.fps=30.0;bpy.ops.import_scene.gltf(filepath='GODOT_SOURCE', bone_heuristic='BLENDER');bpy.ops.wm.save_mainfile(filepath='GODOT_SINK');";
String script = blend_to_scene_setting;
String source = "res://.godot/imported/" + p_file.get_file().get_basename().camelcase_to_underscore() + "-" + p_file.md5_text() + ".glb";
int32_t flags = EditorSceneFormatImporter::IMPORT_GENERATE_TANGENT_ARRAYS | EditorSceneFormatImporter::IMPORT_USE_NAMED_SKIN_BINDS;
Error err = doc->save_scene(root, source, source, flags, 30.0f, Ref<GLTFState>());
if (err != OK) {
ERR_PRINT(vformat("Blend save gltf scene error %s.", itos(err)));
}
String source_global = ProjectSettings::get_singleton()->globalize_path(source);
source_global = source_global.c_escape();
script = script.replace("GODOT_SOURCE", source_global);
String sink = ProjectSettings::get_singleton()->globalize_path(p_file);
String sink_global = ProjectSettings::get_singleton()->globalize_path(sink);
sink_global = sink_global.c_escape();
script = script.replace("GODOT_SINK", sink_global);
Array standard_out;
Vector<String> args;
args.push_back("--background");
args.push_back("--python-expr");
print_line(script);
args.push_back(script);
String addon_path = EditorSettings::get_singleton()->get_setting("filesystem/blend/blender_path");
int32_t ret = core_bind::OS::get_singleton()->execute(addon_path, args, standard_out, true);
for (int32_t line_i = 0; line_i < standard_out.size(); line_i++) {
print_line(standard_out[line_i]);
}
if (ret != OK) {
print_error("Blender returned " + itos(ret));
return;
}
}

void SceneExporterBlendPlugin::convert_scene_to_blend() {
Node *root = editor->get_tree()->get_edited_scene_root();
if (!root) {
editor->show_accept(TTR("This operation can't be done without a scene."), TTR("OK"));
return;
}
String filename = String(root->get_scene_file_path().get_file().get_basename());
if (filename.is_empty()) {
filename = root->get_name();
}
file_export_lib->set_current_file(filename + String(".blend"));
file_export_lib->popup_centered_ratio();
}

#endif // TOOLS_ENABLED
52 changes: 52 additions & 0 deletions modules/gltf_blend/editor_scene_exporter_blend_plugin.h
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/*************************************************************************/
/* editor_scene_exporter_blend_plugin.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/

#ifndef EDITOR_SCENE_EXPORTER_BLEND_PLUGIN_H
#define EDITOR_SCENE_EXPORTER_BLEND_PLUGIN_H

#if TOOLS_ENABLED
#include "editor/editor_plugin.h"

#include "editor_scene_importer_blend.h"

class SceneExporterBlendPlugin : public EditorPlugin {
GDCLASS(SceneExporterBlendPlugin, EditorPlugin);
EditorNode *editor = nullptr;
EditorFileDialog *file_export_lib = nullptr;
void _blend_dialog_action(String p_file);
void convert_scene_to_blend();

public:
virtual String get_name() const override;
bool has_main_screen() const override;
SceneExporterBlendPlugin(class EditorNode *p_node);
};
#endif // TOOLS_ENABLED
#endif // EDITOR_SCENE_EXPORTER_BLEND_PLUGIN_H
116 changes: 116 additions & 0 deletions modules/gltf_blend/editor_scene_importer_blend.cpp
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/*************************************************************************/
/* editor_scene_importer_blend.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/

#if TOOLS_ENABLED
#include "editor_scene_importer_blend.h"

#include "core/core_bind.h"
#include "core/object/ref_counted.h"
#include "modules/gltf/editor_scene_importer_gltf.h"
#include "scene/3d/node_3d.h"
#include "scene/animation/animation_player.h"
#include "scene/resources/animation.h"

uint32_t EditorSceneFormatImporterBlend::get_import_flags() const {
return ImportFlags::IMPORT_SCENE;
}

void EditorSceneFormatImporterBlend::get_extensions(List<String> *r_extensions) const {
r_extensions->push_back("blend");
}

Node *EditorSceneFormatImporterBlend::import_scene(const String &p_path,
uint32_t p_flags, int p_bake_fps,
List<String> *r_missing_deps,
Error *r_err) {
// TODO: fire 2021-11-11 Handle OCTAHEDRAL_COMPRESSION
String addon_path = EditorSettings::get_singleton()->get_setting("filesystem/blend/blender_path");
String scene_to_blend_setting = "import bpy, os, sys;"
"bpy.ops.wm.open_mainfile(filepath='GODOT_SOURCE');"
"bpy.ops.export_scene.gltf("
"filepath='GODOT_SINK',"
"export_format='GLTF_SEPARATE',"
"export_keep_originals=True,"
"export_texture_dir='GODOT_TEXTURE_DIR',"
"export_colors=True,"
"export_all_influences=True,"
"export_extras=True,"
"export_cameras=True,"
"export_lights=True) if bpy.app.version >= (3, 0, 0) else "
"bpy.ops.export_scene.gltf("
"filepath='GODOT_SINK',"
"export_format='GLTF_SEPARATE',"
"export_texture_dir='GODOT_TEXTURE_DIR',"
"export_colors=True,"
"export_all_influences=True,"
"export_extras=True,"
"export_cameras=True,"
"export_lights=True);";
String script = scene_to_blend_setting;
String source = ProjectSettings::get_singleton()->globalize_path(p_path);
String source_global = ProjectSettings::get_singleton()->globalize_path(source);
source_global = source_global.c_escape();
core_bind::Directory dir;
String texture_global = "res://.godot/imported/" + p_path.get_file().get_basename() + "-" + p_path.md5_text() + "_textures";
texture_global = ProjectSettings::get_singleton()->globalize_path(texture_global);
dir.make_dir(texture_global);
texture_global = texture_global.c_escape();
script = script.replace("GODOT_TEXTURE_DIR", texture_global);
script = script.replace("GODOT_SOURCE", source_global);
String sink = "res://.godot/imported/" + p_path.get_file().get_basename() + "-" + p_path.md5_text() + ".gltf";
String sink_global = ProjectSettings::get_singleton()->globalize_path(sink);
sink_global = sink_global.c_escape();
script = script.replace("GODOT_SINK", sink_global);
Vector<String> args;
args.push_back("--background");
args.push_back("--python-expr");
args.push_back(script);
print_line(script);
Array standard_out;
int32_t ret = core_bind::OS::get_singleton()->execute(addon_path, args, standard_out, true);
for (int32_t line_i = 0; line_i < standard_out.size(); line_i++) {
print_line(standard_out[line_i]);
}
if (ret != OK) {
print_error("Blender returned " + itos(ret));
return nullptr;
}
Ref<EditorSceneFormatImporterGLTF> gltf_importer;
gltf_importer.instantiate();
return gltf_importer->call("import_scene_from_other_importer", sink_global, p_flags, p_bake_fps);
}

Ref<Animation> EditorSceneFormatImporterBlend::import_animation(const String &p_path,
uint32_t p_flags,
int p_bake_fps) {
return Ref<Animation>();
}

#endif // TOOLS_ENABLED
53 changes: 53 additions & 0 deletions modules/gltf_blend/editor_scene_importer_blend.h
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/*************************************************************************/
/* editor_scene_importer_blend.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/

#ifndef EDITOR_SCENE_IMPORTER_BLEND_H
#define EDITOR_SCENE_IMPORTER_BLEND_H
#ifdef TOOLS_ENABLED

#include "editor/editor_settings.h"
#include "editor/import/resource_importer_scene.h"
#include "scene/main/node.h"
#include "scene/resources/packed_scene.h"

class Animation;

class EditorSceneFormatImporterBlend : public EditorSceneFormatImporter {
GDCLASS(EditorSceneFormatImporterBlend, EditorSceneFormatImporter);

public:
virtual uint32_t get_import_flags() const override;
virtual void get_extensions(List<String> *r_extensions) const override;
virtual Node *import_scene(const String &p_path, uint32_t p_flags, int p_bake_fps, List<String> *r_missing_deps, Error *r_err = nullptr) override;
virtual Ref<Animation> import_animation(const String &p_path,
uint32_t p_flags, int p_bake_fps) override;
};
#endif // TOOLS_ENABLED
#endif // EDITOR_SCENE_IMPORTER_BLEND_H

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