a7f49ac9a1
Happy new year to the wonderful Godot community! We're starting a new decade with a well-established, non-profit, free and open source game engine, and tons of further improvements in the pipeline from hundreds of contributors. Godot will keep getting better, and we're looking forward to all the games that the community will keep developing and releasing with it.
205 lines
8.9 KiB
C++
205 lines
8.9 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) 2007-2020 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2020 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/os/thread.h"
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#include "core/resource.h"
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class ResourceInteractiveLoader : public Reference {
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GDCLASS(ResourceInteractiveLoader, Reference);
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friend class ResourceLoader;
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String path_loading;
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Thread::ID path_loading_thread;
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protected:
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static void _bind_methods();
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public:
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virtual void set_local_path(const String &p_local_path) = 0;
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virtual Ref<Resource> get_resource() = 0;
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virtual Error poll() = 0;
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virtual int get_stage() const = 0;
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virtual int get_stage_count() const = 0;
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virtual void set_translation_remapped(bool p_remapped) = 0;
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virtual Error wait();
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ResourceInteractiveLoader() {}
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~ResourceInteractiveLoader();
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};
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class ResourceFormatLoader : public Reference {
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GDCLASS(ResourceFormatLoader, Reference);
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protected:
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static void _bind_methods();
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public:
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virtual Ref<ResourceInteractiveLoader> load_interactive(const String &p_path, const String &p_original_path = "", Error *r_error = NULL);
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virtual RES load(const String &p_path, const String &p_original_path = "", Error *r_error = NULL);
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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 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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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)(RES 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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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 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 = NULL);
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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 RES _load(const String &p_path, const String &p_original_path, const String &p_type_hint, bool p_no_cache, Error *r_error);
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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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static Mutex *loading_map_mutex;
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//used to track paths being loaded in a thread, avoids cyclic recursion
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struct LoadingMapKey {
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String path;
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Thread::ID thread;
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bool operator==(const LoadingMapKey &p_key) const {
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return (thread == p_key.thread && path == p_key.path);
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}
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};
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struct LoadingMapKeyHasher {
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static _FORCE_INLINE_ uint32_t hash(const LoadingMapKey &p_key) { return p_key.path.hash() + HashMapHasherDefault::hash(p_key.thread); }
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};
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static HashMap<LoadingMapKey, int, LoadingMapKeyHasher> loading_map;
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static bool _add_to_loading_map(const String &p_path);
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static void _remove_from_loading_map(const String &p_path);
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static void _remove_from_loading_map_and_thread(const String &p_path, Thread::ID p_thread);
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public:
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static Ref<ResourceInteractiveLoader> load_interactive(const String &p_path, const String &p_type_hint = "", bool p_no_cache = false, Error *r_error = NULL);
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static RES load(const String &p_path, const String &p_type_hint = "", bool p_no_cache = false, Error *r_error = NULL);
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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 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) err_notify(err_notify_ud, p_err);
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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) dep_err_notify(dep_err_notify_ud, p_path, p_dependency, p_type);
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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 initialize();
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static void finalize();
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};
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#endif
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