0a57f964a3
Implemented by request of @neikeq to advance in the GDExtension version of Mono. * If a Resource type is missing upon load, it will be remembered together with its data (Unless manually overriden). * If a Node type is missing upon load, it will be also be remembered together with its data (unless deleted). This feature makes working with GDExtension much easier, as it ensures that missing types no longer cause data loss.
234 lines
11 KiB
C++
234 lines
11 KiB
C++
/*************************************************************************/
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/* resource_loader.h */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#ifndef RESOURCE_LOADER_H
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#define RESOURCE_LOADER_H
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#include "core/io/resource.h"
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#include "core/object/gdvirtual.gen.inc"
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#include "core/object/script_language.h"
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#include "core/os/semaphore.h"
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#include "core/os/thread.h"
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class ResourceFormatLoader : public RefCounted {
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GDCLASS(ResourceFormatLoader, RefCounted);
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public:
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enum CacheMode {
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CACHE_MODE_IGNORE, // Resource and subresources do not use path cache, no path is set into resource.
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CACHE_MODE_REUSE, // Resource and subresources use patch cache, reuse existing loaded resources instead of loading from disk when available.
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CACHE_MODE_REPLACE, // Resource and subresource use path cache, but replace existing loaded resources when available with information from disk.
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};
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protected:
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static void _bind_methods();
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GDVIRTUAL0RC(Vector<String>, _get_recognized_extensions)
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GDVIRTUAL1RC(bool, _handles_type, StringName)
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GDVIRTUAL1RC(String, _get_resource_type, String)
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GDVIRTUAL1RC(ResourceUID::ID, _get_resource_uid, String)
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GDVIRTUAL2RC(Vector<String>, _get_dependencies, String, bool)
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GDVIRTUAL2RC(int64_t, _rename_dependencies, String, Dictionary)
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GDVIRTUAL1RC(bool, _exists, String)
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GDVIRTUAL4RC(Variant, _load, String, String, bool, int)
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public:
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virtual Ref<Resource> load(const String &p_path, const String &p_original_path = "", Error *r_error = nullptr, bool p_use_sub_threads = false, float *r_progress = nullptr, CacheMode p_cache_mode = CACHE_MODE_REUSE);
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virtual bool exists(const String &p_path) const;
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virtual void get_recognized_extensions(List<String> *p_extensions) const;
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virtual void get_recognized_extensions_for_type(const String &p_type, List<String> *p_extensions) const;
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virtual bool recognize_path(const String &p_path, const String &p_for_type = String()) const;
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virtual bool handles_type(const String &p_type) const;
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virtual String get_resource_type(const String &p_path) const;
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virtual ResourceUID::ID get_resource_uid(const String &p_path) const;
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virtual void get_dependencies(const String &p_path, List<String> *p_dependencies, bool p_add_types = false);
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virtual Error rename_dependencies(const String &p_path, const Map<String, String> &p_map);
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virtual bool is_import_valid(const String &p_path) const { return true; }
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virtual bool is_imported(const String &p_path) const { return false; }
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virtual int get_import_order(const String &p_path) const { return 0; }
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virtual String get_import_group_file(const String &p_path) const { return ""; } //no group
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virtual ~ResourceFormatLoader() {}
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};
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VARIANT_ENUM_CAST(ResourceFormatLoader::CacheMode)
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typedef void (*ResourceLoadErrorNotify)(void *p_ud, const String &p_text);
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typedef void (*DependencyErrorNotify)(void *p_ud, const String &p_loading, const String &p_which, const String &p_type);
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typedef Error (*ResourceLoaderImport)(const String &p_path);
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typedef void (*ResourceLoadedCallback)(Ref<Resource> p_resource, const String &p_path);
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class ResourceLoader {
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enum {
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MAX_LOADERS = 64
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};
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public:
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enum ThreadLoadStatus {
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THREAD_LOAD_INVALID_RESOURCE,
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THREAD_LOAD_IN_PROGRESS,
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THREAD_LOAD_FAILED,
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THREAD_LOAD_LOADED
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};
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private:
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static Ref<ResourceFormatLoader> loader[MAX_LOADERS];
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static int loader_count;
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static bool timestamp_on_load;
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static void *err_notify_ud;
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static ResourceLoadErrorNotify err_notify;
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static void *dep_err_notify_ud;
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static DependencyErrorNotify dep_err_notify;
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static bool abort_on_missing_resource;
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static bool create_missing_resources_if_class_unavailable;
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static HashMap<String, Vector<String>> translation_remaps;
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static HashMap<String, String> path_remaps;
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static String _path_remap(const String &p_path, bool *r_translation_remapped = nullptr);
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friend class Resource;
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static SelfList<Resource>::List remapped_list;
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friend class ResourceFormatImporter;
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friend class ResourceInteractiveLoader;
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// Internal load function.
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static Ref<Resource> _load(const String &p_path, const String &p_original_path, const String &p_type_hint, ResourceFormatLoader::CacheMode p_cache_mode, Error *r_error, bool p_use_sub_threads, float *r_progress);
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static ResourceLoadedCallback _loaded_callback;
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static Ref<ResourceFormatLoader> _find_custom_resource_format_loader(String path);
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struct ThreadLoadTask {
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Thread *thread = nullptr;
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Thread::ID loader_id = 0;
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Semaphore *semaphore = nullptr;
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String local_path;
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String remapped_path;
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String type_hint;
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float progress = 0.0;
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ThreadLoadStatus status = THREAD_LOAD_IN_PROGRESS;
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ResourceFormatLoader::CacheMode cache_mode = ResourceFormatLoader::CACHE_MODE_REUSE;
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Error error = OK;
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Ref<Resource> resource;
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bool xl_remapped = false;
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bool use_sub_threads = false;
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bool start_next = true;
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int requests = 0;
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int poll_requests = 0;
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Set<String> sub_tasks;
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};
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static void _thread_load_function(void *p_userdata);
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static Mutex *thread_load_mutex;
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static HashMap<String, ThreadLoadTask> thread_load_tasks;
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static Semaphore *thread_load_semaphore;
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static int thread_waiting_count;
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static int thread_loading_count;
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static int thread_suspended_count;
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static int thread_load_max;
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static float _dependency_get_progress(const String &p_path);
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public:
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static Error load_threaded_request(const String &p_path, const String &p_type_hint = "", bool p_use_sub_threads = false, ResourceFormatLoader::CacheMode p_cache_mode = ResourceFormatLoader::CACHE_MODE_REUSE, const String &p_source_resource = String());
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static ThreadLoadStatus load_threaded_get_status(const String &p_path, float *r_progress = nullptr);
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static Ref<Resource> load_threaded_get(const String &p_path, Error *r_error = nullptr);
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static Ref<Resource> load(const String &p_path, const String &p_type_hint = "", ResourceFormatLoader::CacheMode p_cache_mode = ResourceFormatLoader::CACHE_MODE_REUSE, Error *r_error = nullptr);
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static bool exists(const String &p_path, const String &p_type_hint = "");
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static void get_recognized_extensions_for_type(const String &p_type, List<String> *p_extensions);
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static void add_resource_format_loader(Ref<ResourceFormatLoader> p_format_loader, bool p_at_front = false);
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static void remove_resource_format_loader(Ref<ResourceFormatLoader> p_format_loader);
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static String get_resource_type(const String &p_path);
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static ResourceUID::ID get_resource_uid(const String &p_path);
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static void get_dependencies(const String &p_path, List<String> *p_dependencies, bool p_add_types = false);
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static Error rename_dependencies(const String &p_path, const Map<String, String> &p_map);
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static bool is_import_valid(const String &p_path);
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static String get_import_group_file(const String &p_path);
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static bool is_imported(const String &p_path);
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static int get_import_order(const String &p_path);
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static void set_timestamp_on_load(bool p_timestamp) { timestamp_on_load = p_timestamp; }
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static bool get_timestamp_on_load() { return timestamp_on_load; }
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static void notify_load_error(const String &p_err) {
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if (err_notify) {
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err_notify(err_notify_ud, p_err);
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}
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}
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static void set_error_notify_func(void *p_ud, ResourceLoadErrorNotify p_err_notify) {
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err_notify = p_err_notify;
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err_notify_ud = p_ud;
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}
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static void notify_dependency_error(const String &p_path, const String &p_dependency, const String &p_type) {
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if (dep_err_notify) {
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dep_err_notify(dep_err_notify_ud, p_path, p_dependency, p_type);
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}
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}
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static void set_dependency_error_notify_func(void *p_ud, DependencyErrorNotify p_err_notify) {
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dep_err_notify = p_err_notify;
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dep_err_notify_ud = p_ud;
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}
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static void set_abort_on_missing_resources(bool p_abort) { abort_on_missing_resource = p_abort; }
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static bool get_abort_on_missing_resources() { return abort_on_missing_resource; }
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static String path_remap(const String &p_path);
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static String import_remap(const String &p_path);
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static void load_path_remaps();
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static void clear_path_remaps();
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static void reload_translation_remaps();
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static void load_translation_remaps();
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static void clear_translation_remaps();
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static void set_load_callback(ResourceLoadedCallback p_callback);
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static ResourceLoaderImport import;
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static bool add_custom_resource_format_loader(String script_path);
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static void remove_custom_resource_format_loader(String script_path);
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static void add_custom_loaders();
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static void remove_custom_loaders();
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static void set_create_missing_resources_if_class_unavailable(bool p_enable);
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_FORCE_INLINE_ static bool is_creating_missing_resources_if_class_unavailable_enabled() { return create_missing_resources_if_class_unavailable; }
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static void initialize();
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static void finalize();
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};
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#endif // RESOURCE_LOADER_H
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