diff --git a/core/io/resource_uid.cpp b/core/io/resource_uid.cpp
index 8378ec7b4cc..ef997f7458c 100644
--- a/core/io/resource_uid.cpp
+++ b/core/io/resource_uid.cpp
@@ -35,6 +35,7 @@
#include "core/io/dir_access.h"
#include "core/io/file_access.h"
#include "core/io/resource_loader.h"
+#include "core/math/random_pcg.h"
// These constants are off by 1, causing the 'z' and '9' characters never to be used.
// This cannot be fixed without breaking compatibility; see GH-83843.
@@ -121,10 +122,31 @@ ResourceUID::ID ResourceUID::create_id() {
}
}
+ResourceUID::ID ResourceUID::create_id_for_path(const String &p_path) {
+ ID id = INVALID_ID;
+ RandomPCG rng;
+
+ const String project_name = GLOBAL_GET("application/config/name");
+ rng.seed(project_name.hash64() * p_path.hash64() * FileAccess::get_md5(p_path).hash64());
+
+ while (true) {
+ int64_t num1 = rng.rand();
+ int64_t num2 = ((int64_t)rng.rand()) << 32;
+ id = (num1 | num2) & 0x7FFFFFFFFFFFFFFF;
+
+ MutexLock lock(mutex);
+ if (!unique_ids.has(id)) {
+ break;
+ }
+ }
+ return id;
+}
+
bool ResourceUID::has_id(ID p_id) const {
MutexLock l(mutex);
return unique_ids.has(p_id);
}
+
void ResourceUID::add_id(ID p_id, const String &p_path) {
MutexLock l(mutex);
ERR_FAIL_COND(unique_ids.has(p_id));
@@ -327,6 +349,7 @@ void ResourceUID::_bind_methods() {
ClassDB::bind_method(D_METHOD("text_to_id", "text_id"), &ResourceUID::text_to_id);
ClassDB::bind_method(D_METHOD("create_id"), &ResourceUID::create_id);
+ ClassDB::bind_method(D_METHOD("create_id_for_path", "path"), &ResourceUID::create_id_for_path);
ClassDB::bind_method(D_METHOD("has_id", "id"), &ResourceUID::has_id);
ClassDB::bind_method(D_METHOD("add_id", "id", "path"), &ResourceUID::add_id);
diff --git a/core/io/resource_uid.h b/core/io/resource_uid.h
index 06196212e27..6ac4c9c998b 100644
--- a/core/io/resource_uid.h
+++ b/core/io/resource_uid.h
@@ -70,6 +70,7 @@ public:
ID text_to_id(const String &p_text) const;
ID create_id();
+ ID create_id_for_path(const String &p_path);
bool has_id(ID p_id) const;
void add_id(ID p_id, const String &p_path);
void set_id(ID p_id, const String &p_path);
diff --git a/doc/classes/ResourceUID.xml b/doc/classes/ResourceUID.xml
index 24853d462d2..a87fb32898a 100644
--- a/doc/classes/ResourceUID.xml
+++ b/doc/classes/ResourceUID.xml
@@ -26,6 +26,13 @@
In order for this UID to be registered, you must call [method add_id] or [method set_id].
+
+
+
+
+ Like [method create_id], but the UID is seeded with the provided [param path] and project name. UIDs generated for that path will be always the same within the current project.
+
+
diff --git a/editor/editor_file_system.cpp b/editor/editor_file_system.cpp
index 990a3f1c391..066d8e0451b 100644
--- a/editor/editor_file_system.cpp
+++ b/editor/editor_file_system.cpp
@@ -905,7 +905,7 @@ bool EditorFileSystem::_update_scan_actions() {
if (existing_id != ResourceUID::INVALID_ID) {
const String old_path = ResourceUID::get_singleton()->get_id_path(existing_id);
if (old_path != new_file_path && FileAccess::exists(old_path)) {
- const ResourceUID::ID new_id = ResourceUID::get_singleton()->create_id();
+ const ResourceUID::ID new_id = ResourceUID::get_singleton()->create_id_for_path(new_file_path);
ResourceUID::get_singleton()->add_id(new_id, new_file_path);
ResourceSaver::set_uid(new_file_path, new_id);
WARN_PRINT(vformat("Duplicate UID detected for Resource at \"%s\".\nOld Resource path: \"%s\". The new file UID was changed automatically.", new_file_path, old_path));
@@ -916,7 +916,7 @@ bool EditorFileSystem::_update_scan_actions() {
} else if (ResourceLoader::should_create_uid_file(new_file_path)) {
Ref f = FileAccess::open(new_file_path + ".uid", FileAccess::WRITE);
if (f.is_valid()) {
- ia.new_file->uid = ResourceUID::get_singleton()->create_id();
+ ia.new_file->uid = ResourceUID::get_singleton()->create_id_for_path(new_file_path);
f->store_line(ResourceUID::get_singleton()->id_to_text(ia.new_file->uid));
}
}
@@ -1353,7 +1353,7 @@ void EditorFileSystem::_process_file_system(const ScannedDirectory *p_scan_dir,
Ref f = FileAccess::open(path + ".uid", FileAccess::WRITE);
if (f.is_valid()) {
if (fi->uid == ResourceUID::INVALID_ID) {
- fi->uid = ResourceUID::get_singleton()->create_id();
+ fi->uid = ResourceUID::get_singleton()->create_id_for_path(path);
} else {
WARN_PRINT(vformat("Missing .uid file for path \"%s\". The file was re-created from cache.", path));
}
@@ -2442,7 +2442,7 @@ void EditorFileSystem::update_files(const Vector &p_script_paths) {
if (ResourceLoader::should_create_uid_file(file)) {
Ref f = FileAccess::open(file + ".uid", FileAccess::WRITE);
if (f.is_valid()) {
- const ResourceUID::ID id = ResourceUID::get_singleton()->create_id();
+ const ResourceUID::ID id = ResourceUID::get_singleton()->create_id_for_path(file);
ResourceUID::get_singleton()->add_id(id, file);
f->store_line(ResourceUID::get_singleton()->id_to_text(id));
fi->uid = id;
@@ -2630,7 +2630,7 @@ Error EditorFileSystem::_reimport_group(const String &p_group_file, const Vector
}
if (uid == ResourceUID::INVALID_ID) {
- uid = ResourceUID::get_singleton()->create_id();
+ uid = ResourceUID::get_singleton()->create_id_for_path(file);
}
f->store_line("uid=\"" + ResourceUID::get_singleton()->id_to_text(uid) + "\""); // Store in readable format.
@@ -2852,7 +2852,7 @@ Error EditorFileSystem::_reimport_file(const String &p_file, const HashMapcreate_id();
+ uid = ResourceUID::get_singleton()->create_id_for_path(p_file);
}
//finally, perform import!!
@@ -3541,14 +3541,14 @@ ResourceUID::ID EditorFileSystem::_resource_saver_get_resource_id_for_path(const
}
if (p_generate) {
- return ResourceUID::get_singleton()->create_id(); // Just create a new one, we will be notified of save anyway and fetch the right UID at that time, to keep things simple.
+ return ResourceUID::get_singleton()->create_id_for_path(p_path); // Just create a new one, we will be notified of save anyway and fetch the right UID at that time, to keep things simple.
} else {
return ResourceUID::INVALID_ID;
}
} else if (fs->files[cpos]->uid != ResourceUID::INVALID_ID) {
return fs->files[cpos]->uid;
} else if (p_generate) {
- return ResourceUID::get_singleton()->create_id(); // Just create a new one, we will be notified of save anyway and fetch the right UID at that time, to keep things simple.
+ return ResourceUID::get_singleton()->create_id_for_path(p_path); // Just create a new one, we will be notified of save anyway and fetch the right UID at that time, to keep things simple.
} else {
return ResourceUID::INVALID_ID;
}
diff --git a/editor/import/3d/resource_importer_scene.cpp b/editor/import/3d/resource_importer_scene.cpp
index b05e7c2aaf2..cf2b06fb2d7 100644
--- a/editor/import/3d/resource_importer_scene.cpp
+++ b/editor/import/3d/resource_importer_scene.cpp
@@ -2930,7 +2930,7 @@ static Error convert_path_to_uid(ResourceUID::ID p_source_id, const String &p_ha
if (ResourceUID::get_singleton()->has_id(save_id)) {
if (save_path != ResourceUID::get_singleton()->get_id_path(save_id)) {
// The user has specified a path which does not match the default UID.
- save_id = ResourceUID::get_singleton()->create_id();
+ save_id = ResourceUID::get_singleton()->create_id_for_path(save_path);
}
}
p_settings[p_path_key] = ResourceUID::get_singleton()->id_to_text(save_id);