Operating System functions. OS wraps the most common functionality to communicate with the host operating system, such as the clipboard, video driver, date and time, timers, environment variables, execution of binaries, command line, etc.
Crashes the engine (or the editor if called within a [code]@tool[/code] script). This should [i]only[/i] be used for testing the system's crash handler, not for any other purpose. For general error reporting, use (in order of preference) [method @GDScript.assert], [method @GlobalScope.push_error] or [method alert]. See also [method kill].
Creates a new instance of Godot that runs independently. The [code]arguments[/code] are used in the given order and separated by a space.
If the process creation succeeds, the method will return the new process ID, which you can use to monitor the process (and potentially terminate it with [method kill]). If the process creation fails, the method will return [code]-1[/code].
[b]Note:[/b] This method is implemented on Android, iOS, Linux, macOS and Windows.
Creates a new process that runs independently of Godot. It will not terminate if Godot terminates. The path specified in [code]path[/code] must exist and be executable file or macOS .app bundle. Platform path resolution will be used. The [code]arguments[/code] are used in the given order and separated by a space.
On Windows, if [code]open_console[/code] is [code]true[/code] and process is console app, new terminal window will be opened, it's ignored on other platforms.
If the process creation succeeds, the method will return the new process ID, which you can use to monitor the process (and potentially terminate it with [method kill]). If the process creation fails, the method will return [code]-1[/code].
For example, running another instance of the project:
[codeblocks]
[gdscript]
var pid = OS.create_process(OS.get_executable_path(), [])
[/gdscript]
[csharp]
var pid = OS.CreateProcess(OS.GetExecutablePath(), new string[] {});
[/csharp]
[/codeblocks]
See [method execute] if you wish to run an external command and retrieve the results.
[b]Note:[/b] This method is implemented on Android, iOS, Linux, macOS and Windows.
[b]Note:[/b] On macOS, sandboxed applications are limited to run only embedded helper executables, specified during export or system .app bundle, system .app bundles will ignore arguments.
Delays execution of the current thread by [code]msec[/code] milliseconds. [code]msec[/code] must be greater than or equal to [code]0[/code]. Otherwise, [method delay_msec] will do nothing and will print an error message.
[b]Note:[/b] [method delay_msec] is a [i]blocking[/i] way to delay code execution. To delay code execution in a non-blocking way, see [method SceneTree.create_timer]. Awaiting with [method SceneTree.create_timer] will delay the execution of code placed below the [code]await[/code] without affecting the rest of the project (or editor, for [EditorPlugin]s and [EditorScript]s).
[b]Note:[/b] When [method delay_msec] is called on the main thread, it will freeze the project and will prevent it from redrawing and registering input until the delay has passed. When using [method delay_msec] as part of an [EditorPlugin] or [EditorScript], it will freeze the editor but won't freeze the project if it is currently running (since the project is an independent child process).
Delays execution of the current thread by [code]usec[/code] microseconds. [code]usec[/code] must be greater than or equal to [code]0[/code]. Otherwise, [method delay_usec] will do nothing and will print an error message.
[b]Note:[/b] [method delay_usec] is a [i]blocking[/i] way to delay code execution. To delay code execution in a non-blocking way, see [method SceneTree.create_timer]. Awaiting with [method SceneTree.create_timer] will delay the execution of code placed below the [code]await[/code] without affecting the rest of the project (or editor, for [EditorPlugin]s and [EditorScript]s).
[b]Note:[/b] When [method delay_usec] is called on the main thread, it will freeze the project and will prevent it from redrawing and registering input until the delay has passed. When using [method delay_usec] as part of an [EditorPlugin] or [EditorScript], it will freeze the editor but won't freeze the project if it is currently running (since the project is an independent child process).
Executes a command. The file specified in [code]path[/code] must exist and be executable. Platform path resolution will be used. The [code]arguments[/code] are used in the given order and separated by a space. If an [code]output[/code] [Array] is provided, the complete shell output of the process will be appended as a single [String] element in [code]output[/code]. If [code]read_stderr[/code] is [code]true[/code], the output to the standard error stream will be included too.
On Windows, if [code]open_console[/code] is [code]true[/code] and process is console app, new terminal window will be opened, it's ignored on other platforms.
If the command is successfully executed, the method will return the exit code of the command, or [code]-1[/code] if it fails.
[b]Note:[/b] The Godot thread will pause its execution until the executed command terminates. Use [Thread] to create a separate thread that will not pause the Godot thread, or use [method create_process] to create a completely independent process.
For example, to retrieve a list of the working directory's contents:
[b]Note:[/b] To execute a Windows command interpreter built-in command, specify [code]cmd.exe[/code] in [code]path[/code], [code]/c[/code] as the first argument, and the desired command as the second argument.
[b]Note:[/b] To execute a PowerShell built-in command, specify [code]powershell.exe[/code] in [code]path[/code], [code]-Command[/code] as the first argument, and the desired command as the second argument.
[b]Note:[/b] To execute a Unix shell built-in command, specify shell executable name in [code]path[/code], [code]-c[/code] as the first argument, and the desired command as the second argument.
Returns the [i]global[/i] cache data directory according to the operating system's standards. On desktop platforms, this path can be overridden by setting the [code]XDG_CACHE_HOME[/code] environment variable before starting the project. See [url=$DOCS_URL/tutorials/io/data_paths.html]File paths in Godot projects[/url] in the documentation for more information. See also [method get_config_dir] and [method get_data_dir].
Returns the command-line arguments passed to the engine.
Command-line arguments can be written in any form, including both [code]--key value[/code] and [code]--key=value[/code] forms so they can be properly parsed, as long as custom command-line arguments do not conflict with engine arguments.
You can also incorporate environment variables using the [method get_environment] method.
Returns the [i]global[/i] user configuration directory according to the operating system's standards. On desktop platforms, this path can be overridden by setting the [code]XDG_CONFIG_HOME[/code] environment variable before starting the project. See [url=$DOCS_URL/tutorials/io/data_paths.html]File paths in Godot projects[/url] in the documentation for more information. See also [method get_cache_dir] and [method get_data_dir].
Returns the [i]global[/i] user data directory according to the operating system's standards. On desktop platforms, this path can be overridden by setting the [code]XDG_DATA_HOME[/code] environment variable before starting the project. See [url=$DOCS_URL/tutorials/io/data_paths.html]File paths in Godot projects[/url] in the documentation for more information. See also [method get_cache_dir] and [method get_config_dir].
Returns the host OS locale as a string of the form [code]language_Script_COUNTRY_VARIANT@extra[/code]. If you want only the language code and not the fully specified locale from the OS, you can use [method get_locale_language].
Returns the host OS locale's 2 or 3-letter [url=https://en.wikipedia.org/wiki/List_of_ISO_639-1_codes]language code[/url] as a string which should be consistent on all platforms. This is equivalent to extracting the [code]language[/code] part of the [method get_locale] string.
This can be used to narrow down fully specified locale strings to only the "common" language code, when you don't need the additional information about country code or variants. For example, for a French Canadian user with [code]fr_CA[/code] locale, this would return [code]fr[/code].
[b]Note:[/b] Shared storage is implemented on Android and allows to differentiate between app specific and shared directories. Shared directories have additional restrictions on Android.
[b]Note:[/b] This string may change without notice if the user reinstalls/upgrades their operating system or changes their hardware. This means it should generally not be used to encrypt persistent data as the data saved before an unexpected ID change would become inaccessible. The returned string may also be falsified using external programs, so do not rely on the string returned by [method get_unique_id] for security purposes.
On Windows, this is [code]%AppData%\Godot\app_userdata\[project_name][/code], or [code]%AppData%\[custom_name][/code] if [code]use_custom_user_dir[/code] is set. [code]%AppData%[/code] expands to [code]%UserProfile%\AppData\Roaming[/code].
On macOS, this is [code]~/Library/Application Support/Godot/app_userdata/[project_name][/code], or [code]~/Library/Application Support/[custom_name][/code] if [code]use_custom_user_dir[/code] is set.
On Linux and BSD, this is [code]~/.local/share/godot/app_userdata/[project_name][/code], or [code]~/.local/share/[custom_name][/code] if [code]use_custom_user_dir[/code] is set.
On Android and iOS, this is a sandboxed directory in either internal or external storage, depending on the user's configuration.
On the web, this is a virtual directory managed by the browser.
If the project name is empty, [code][project_name][/code] falls back to [code][unnamed project][/code].
Not to be confused with [method get_data_dir], which returns the [i]global[/i] (non-project-specific) user home directory.
Returns [code]true[/code] if the feature for the given feature tag is supported in the currently running instance, depending on the platform, build, etc. Can be used to check whether you're currently running a debug build, on a certain platform or arch, etc. Refer to the [url=$DOCS_URL/getting_started/workflow/export/feature_tags.html]Feature Tags[/url] documentation for more details.
Returns [code]true[/code] if the Godot binary used to run the project is a [i]debug[/i] export template, or when running in the editor.
Returns [code]false[/code] if the Godot binary used to run the project is a [i]release[/i] export template.
To check whether the Godot binary used to run the project is an export template (debug or release), use [code]OS.has_feature("standalone")[/code] instead.
Returns [code]true[/code] if the engine was executed with the [code]--verbose[/code] or [code]-v[/code] command line argument, or if [member ProjectSettings.debug/settings/stdout/verbose_stdout] is [code]true[/code]. See also [method @GlobalScope.print_verbose].
If [code]true[/code], the [code]user://[/code] file system is persistent, so that its state is the same after a player quits and starts the game again. Relevant to the HTML5 platform, where this persistence may be unavailable.
Kill (terminate) the process identified by the given process ID ([code]pid[/code]), e.g. the one returned by [method execute] in non-blocking mode. See also [method crash].
Sets the value of the environment variable [code]variable[/code] to [code]value[/code]. The environment variable will be set for the Godot process and any process executed with [method execute] after running [method set_environment]. The environment variable will [i]not[/i] persist to processes run after the Godot process was terminated.
[b]Note:[/b] Double-check the casing of [code]variable[/code]. Environment variable names are case-sensitive on all platforms except Windows.
Requests the OS to open a resource with the most appropriate program. For example:
- [code]OS.shell_open("C:\\Users\name\Downloads")[/code] on Windows opens the file explorer at the user's Downloads folder.
- [code]OS.shell_open("https://godotengine.org")[/code] opens the default web browser on the official Godot website.
- [code]OS.shell_open("mailto:example@example.com")[/code] opens the default email client with the "To" field set to [code]example@example.com[/code]. See [url=https://blog.escapecreative.com/customizing-mailto-links/]Customizing [code]mailto:[/code] Links[/url] for a list of fields that can be added.
