Now the importer can handle files with multiple meshes in them.

SCsub

@@ -13,6 +13,7 @@ if os.path.isdir('../props'):
 module_env.add_source_files(env.modules_sources,"register_types.cpp")
 
 module_env.add_source_files(env.modules_sources,"mesh_data_resource.cpp")
+module_env.add_source_files(env.modules_sources,"mesh_data_resource_collection.cpp")
 
 module_env.add_source_files(env.modules_sources,"plugin/mdr_import_plugin_base.cpp")
 

mesh_data_resource.h

@@ -29,7 +29,6 @@ SOFTWARE.
 #include "scene/resources/shape.h"
 
 class MeshDataResource : public Resource {
-
 	GDCLASS(MeshDataResource, Resource);
 	RES_BASE_EXTENSION("mdres");
 

mesh_data_resource_collection.cpp

@@ -0,0 +1,65 @@
+/*
+Copyright (c) 2019-2020 Péter Magyar
+
+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.
+*/
+
+#include "mesh_data_resource_collection.h"
+
+#include "core/version.h"
+
+void MeshDataResourceCollection::add_mdr(Ref<MeshDataResource> mdr) {
+	_mdrs.push_back(mdr);
+}
+
+Vector<Variant> MeshDataResourceCollection::get_mdrs() {
+	Vector<Variant> r;
+	for (int i = 0; i < _mdrs.size(); i++) {
+#if VERSION_MAJOR < 4
+		r.push_back(_mdrs[i].get_ref_ptr());
+#else
+		r.push_back(_mdrs[i]);
+#endif
+	}
+	return r;
+}
+void MeshDataResourceCollection::set_mdrs(const Vector<Variant> &p_arrays) {
+	_mdrs.clear();
+
+	for (int i = 0; i < p_arrays.size(); ++i) {
+		Ref<MeshDataResource> e = Ref<MeshDataResource>(p_arrays[i]);
+
+		_mdrs.push_back(e);
+	}
+}
+
+MeshDataResourceCollection::MeshDataResourceCollection() {
+}
+
+MeshDataResourceCollection::~MeshDataResourceCollection() {
+	_mdrs.clear();
+}
+
+void MeshDataResourceCollection::_bind_methods() {
+	ClassDB::bind_method(D_METHOD("add_mdr", "mdr"), &MeshDataResourceCollection::add_mdr);
+
+	ClassDB::bind_method(D_METHOD("get_mdrs"), &MeshDataResourceCollection::get_mdrs);
+	ClassDB::bind_method(D_METHOD("set_mdrs", "array"), &MeshDataResourceCollection::set_mdrs);
+	ADD_PROPERTY(PropertyInfo(Variant::ARRAY, "mdrs"), "set_mdrs", "get_mdrs");
+}

mesh_data_resource_collection.h

@@ -0,0 +1,51 @@
+/*
+Copyright (c) 2019-2020 Péter Magyar
+
+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 MESH_DATA_REOURCE_COLLECTION_H
+#define MESH_DATA_REOURCE_COLLECTION_H
+
+#include "core/resource.h"
+
+#include "core/vector.h"
+
+#include "mesh_data_resource.h"
+
+class MeshDataResourceCollection : public Resource {
+	GDCLASS(MeshDataResourceCollection, Resource);
+
+public:
+	void add_mdr(Ref<MeshDataResource> mdr);
+
+	Vector<Variant> get_mdrs();
+	void set_mdrs(const Vector<Variant> &p_arrays);
+
+	MeshDataResourceCollection();
+	~MeshDataResourceCollection();
+
+protected:
+	static void _bind_methods();
+
+private:
+	Vector<Ref<MeshDataResource> > _mdrs;
+};
+
+#endif

plugin/mdr_import_plugin_base.cpp

@@ -30,7 +30,10 @@ SOFTWARE.
 #include "scene/resources/shape.h"
 #include "scene/resources/sphere_shape.h"
 
+const String MDRImportPluginBase::BINDING_MDR_IMPORT_TYPE = "Single,Single Merged,Multiple";
+
 void MDRImportPluginBase::get_import_options(List<ImportOption> *r_options, int p_preset) const {
+	r_options->push_back(ImportOption(PropertyInfo(Variant::INT, "import_type", PROPERTY_HINT_ENUM, BINDING_MDR_IMPORT_TYPE), MDRImportPluginBase::MDR_IMPORT_TIME_SINGLE));
 	r_options->push_back(ImportOption(PropertyInfo(Variant::INT, "collider_type", PROPERTY_HINT_ENUM, MeshDataResource::BINDING_STRING_COLLIDER_TYPE), MeshDataResource::COLLIDER_TYPE_NONE));
 
 	r_options->push_back(ImportOption(PropertyInfo(Variant::VECTOR3, "offset"), Vector3(0, 0, 0)));
@@ -44,6 +47,29 @@ bool MDRImportPluginBase::get_option_visibility(const String &p_option, const Ma
 	return true;
 }
 
+Error MDRImportPluginBase::process_node(Node *n, const String &p_source_file, const String &p_save_path, const Map<StringName, Variant> &p_options, List<String> *r_platform_variants, List<String> *r_gen_files, Variant *r_metadata) {
+	MDRImportPluginBase::MDRImportType type = static_cast<MDRImportPluginBase::MDRImportType>(static_cast<int>(p_options["import_type"]));
+
+	switch (type) {
+		case MDR_IMPORT_TIME_SINGLE: {
+			return process_node_single(n, p_source_file, p_save_path, p_options, r_platform_variants, r_gen_files, r_metadata);
+		}
+		case MDR_IMPORT_TIME_SINGLE_MERGED: {
+			ERR_FAIL_V_MSG(Error::ERR_UNAVAILABLE, "import type Single Merged is not yet implemented! " + p_source_file);
+		}
+		case MDR_IMPORT_TIME_MULTIPLE: {
+			Ref<MeshDataResourceCollection> coll;
+			coll.instance();
+
+			process_node_multi(n, p_source_file, p_save_path, p_options, r_platform_variants, r_gen_files, r_metadata, coll);
+
+			return ResourceSaver::save(p_save_path + "." + get_save_extension(), coll);
+		}
+	}
+
+	return Error::ERR_PARSE_ERROR;
+}
+
 int MDRImportPluginBase::get_mesh_count(Node *n) {
 	int count = 0;
 
@@ -79,12 +105,16 @@ Error MDRImportPluginBase::process_node_single(Node *n, const String &p_source_f
 
 			return ResourceSaver::save(p_save_path + "." + get_save_extension(), mdr);
 		}
+
+		if (process_node_single(c, p_source_file, p_save_path, p_options, r_platform_variants, r_gen_files, r_metadata) == Error::OK) {
+			return Error::OK;
+		}
 	}
 
 	return Error::ERR_PARSE_ERROR;
 }
 
-Error MDRImportPluginBase::process_node_multi(Node *n, const String &p_source_file, const String &p_save_path, const Map<StringName, Variant> &p_options, List<String> *r_platform_variants, List<String> *r_gen_files, Variant *r_metadata) {
+Error MDRImportPluginBase::process_node_multi(Node *n, const String &p_source_file, const String &p_save_path, const Map<StringName, Variant> &p_options, List<String> *r_platform_variants, List<String> *r_gen_files, Variant *r_metadata, Ref<MeshDataResourceCollection> coll) {
 	MeshDataResource::ColliderType collider_type = static_cast<MeshDataResource::ColliderType>(static_cast<int>(p_options["collider_type"]));
 
 	Vector3 scale = p_options["scale"];
@@ -103,14 +133,20 @@ Error MDRImportPluginBase::process_node_multi(Node *n, const String &p_source_fi
 
 			node_name = node_name.to_lower();
 
-			Error err = ResourceSaver::save(p_save_path + "_" + node_name + "." + get_save_extension(), mdr);
+			String filename = p_source_file.get_basename() + "_" + node_name + "." + get_save_extension();
+
+			Error err = ResourceSaver::save(filename, mdr);
+
+			Ref<MeshDataResource> mdrl = ResourceLoader::load(filename);
+
+			coll->add_mdr(mdrl);
 
 			if (err != Error::OK) {
 				return err;
 			}
 		}
 
-		process_node_multi(c, p_source_file, p_save_path, p_options, r_platform_variants, r_gen_files, r_metadata);
+		process_node_multi(c, p_source_file, p_save_path, p_options, r_platform_variants, r_gen_files, r_metadata, coll);
 	}
 
 	return Error::OK;

plugin/mdr_import_plugin_base.h

@@ -23,6 +23,7 @@ SOFTWARE.
 #ifndef MDR_IMPORT_PLUGIN_BASE
 #define MDR_IMPORT_PLUGIN_BASE
 
+#include "../mesh_data_resource_collection.h"
 #include "core/array.h"
 #include "core/io/resource_saver.h"
 #include "core/math/basis.h"
@@ -48,16 +49,26 @@ SOFTWARE.
 #endif
 
 class MDRImportPluginBase : public EditorImportPlugin {
-
 	GDCLASS(MDRImportPluginBase, EditorImportPlugin);
 
+public:
+	static const String BINDING_MDR_IMPORT_TYPE;
+
+	enum MDRImportType {
+		MDR_IMPORT_TIME_SINGLE = 0,
+		MDR_IMPORT_TIME_SINGLE_MERGED,
+		MDR_IMPORT_TIME_MULTIPLE,
+	};
+
 public:
 	virtual void get_import_options(List<ImportOption> *r_options, int p_preset = 0) const;
 	virtual bool get_option_visibility(const String &p_option, const Map<StringName, Variant> &p_options) const;
 
+	Error process_node(Node *n, const String &p_source_file, const String &p_save_path, const Map<StringName, Variant> &p_options, List<String> *r_platform_variants, List<String> *r_gen_files = NULL, Variant *r_metadata = NULL);
+
 	int get_mesh_count(Node *n);
-	Error process_node_single(Node *n, const String &p_source_file, const String &p_save_path, const Map<StringName, Variant> &p_options, List<String> *r_platform_variants, List<String> *r_gen_files = NULL, Variant *r_metadata = NULL);
-	Error process_node_multi(Node *n, const String &p_source_file, const String &p_save_path, const Map<StringName, Variant> &p_options, List<String> *r_platform_variants, List<String> *r_gen_files = NULL, Variant *r_metadata = NULL);
+	Error process_node_single(Node *n, const String &p_source_file, const String &p_save_path, const Map<StringName, Variant> &p_options, List<String> *r_platform_variants, List<String> *r_gen_files, Variant *r_metadata);
+	Error process_node_multi(Node *n, const String &p_source_file, const String &p_save_path, const Map<StringName, Variant> &p_options, List<String> *r_platform_variants, List<String> *r_gen_files, Variant *r_metadata, Ref<MeshDataResourceCollection> coll);
 	Ref<MeshDataResource> get_mesh(MeshInstance *mi, const Map<StringName, Variant> &p_options, MeshDataResource::ColliderType collider_type, Vector3 scale);
 
 	Array apply_transforms(Array &array, const Map<StringName, Variant> &p_options);

plugin_gltf/editor_import_gltf_mdr.cpp

@@ -70,7 +70,7 @@ Error EditorImportGLTFMdr::import(const String &p_source_file, const String &p_s
 
 	ERR_FAIL_COND_V(!n, Error::ERR_PARSE_ERROR);
 
-	Error err = process_node_single(n, p_source_file, p_save_path, p_options, r_platform_variants, r_gen_files, r_metadata);
+	Error err = process_node(n, p_source_file, p_save_path, p_options, r_platform_variants, r_gen_files, r_metadata);
 
 	n->queue_delete();
 	return err;

register_types.cpp

@@ -23,6 +23,7 @@ SOFTWARE.
 #include "register_types.h"
 
 #include "mesh_data_resource.h"
+#include "mesh_data_resource_collection.h"
 #include "nodes/mesh_data_instance.h"
 
 #ifdef TOOLS_ENABLED
@@ -40,6 +41,7 @@ SOFTWARE.
 
 void register_mesh_data_resource_types() {
 	ClassDB::register_class<MeshDataResource>();
+	ClassDB::register_class<MeshDataResourceCollection>();
 
 	ClassDB::register_class<MeshDataInstance>();