0.6.0

Built platforms: Windows, Linux, macOS, iOS, Android, Web

Added

• Support for constructing typed arrays in Lua using the idiom Array[some_type]()
• Support for constructing typed dictionaries in Lua using the idiom Dictionary[key_type][value_type]()
• Support for typed arrays, typed dictionaries and classes in exported properties:

  MyScript.exported_node_array = export(Array[Node])
  MyScript.exported_int_valued_dict = export(Dictionary[Variant][int])
  MyScript.exported_texture_property = export(Texture)
  -- or
  MyScript.exported_node_array = export({ type = Array[Node] })
  MyScript.exported_int_valued_dict = export({ type = Dictionary[Variant][int] })
  MyScript.exported_texture_property = export({ type = Texture })

• is_instance_valid utility function when opening GODOT_UTILITY_FUNCTIONS library
• Support for older Linux distros using GLIBC on par with Ubuntu 22.04
• Parser API based on Tree Sitter
  • Adds the LuaParser, LuaAST, LuaASTNode and LuaASTQuery classes

Changed

• LuaScriptInstance's data table is passed as self to methods instead of their owner Object
  • For this to work, the table now has a metatable to access its owner when necessary
• LuaScripts now have a "Import Behavior" property, defaulting to "Automatic"
  • In "Automatic" behavior, Lua code is evaluated only if it looks like a Godot script.
    Lua code that looks like a Godot script is one that ends by returning a named variable (return MyClassVariable) or a table constructed inline (return {...})
  • In "Always Evaluate" behavior, Lua code will always be evaluated
  • In "Don't Load" behavior, Lua code will not be loaded nor evaluated at all
  • Note that only evaluated scripts can be attached to Godot Objects.
• Variant and LuaScriptInstance methods are now converted to Callable, so they can be more easily passed to Godot APIs such as Signal.connect

  -- Before this change, we had to manually instantiate Callable
  some_signal:connect(Callable(self, "method_name"))
  -- Now we can pass the method directly
  some_signal:connect(self.method_name)

Fixed

• Fixed cyclic references from LuaScriptInstance <-> LuaState, avoiding leaks of LuaScripts
• Fixed cyclic references from LuaScriptProperty <-> LuaState, avoiding memory leaks
• Support for built-in Variant types in exported properties when passed directly to export:

  MyScript.exported_dictionary = export(Dictionary)

• Convert null Object Variants (<Object#null>) to nil when passing them to Lua
• Convert freed Object Variants (<Freed Object>) to nil when passing them to Lua
• Fixed LuaJIT core/library version mismatch errors in LuaJIT builds
• LuaScriptResourceFormatLoader::_load now respects the cache mode, fixing "Another resource is loaded from path 'res://...' (possible cyclic resource inclusion)." errors
• Error messages from Lua code using the wrong stack index
• Crashes when passing Lua primitives to typeof, Variant.is, Variant.get_type, Variant.booleanize, Variant.duplicate, Variant.get_type_name, Variant.hash, Variant.recursive_hash and Variant.hash_compare
• The addons/lua-gdextension/build/.gdignore file was added to the distributed build.
  This fixes import errors when opening the Godot editor with the LuaJIT build.

0.5.0

Built platforms: Windows, Linux, macOS, iOS, Android, Web

Added

• Support for Linux arm64
• LuaTable.get_metatable and LuaTable.set_metatable methods
• Support for building with LuaJIT
• LuaState.get_lua_runtime, LuaState.get_lua_version_num and LuaState.get_lua_version_string methods

0.4.0

Built platforms: Windows, Linux, macOS, iOS, Android, Web

Added

• LuaCoroutine.completed and LuaCoroutine.failed signals
• await function similar to GDScript's, allowing coroutines to yield and resume automatically when a signal is emitted
• Support for Web exports
• Support Windows arm64 exports
• Support for calling static methods from Godot classes, like FileAccess.open
• Custom Lua 5.4+ warning function that sends messages to push_warning
• LuaThread class as a superclass for LuaCoroutine.
  This new class is used when converting a LuaState's main thread to Variant.
• LuaState.main_thread property for getting a Lua state's main thread of execution
• Support for setting hooks to LuaThreads, including the main thread

Changed

• LuaObject instances are reused when wrapping the same Lua object, so that == and is_same can be used properly
• The following methods of LuaScripts run in pooled coroutines, so that await can be used in them: regular method calls, setter functions, _init, _notification
• Godot 4.4 is now the minimum version necessary to use this addon

Fixed

• Use xcframework instead of dylib in iOS exports
• Crash when Lua errors, but the error object is not a string
• Crash when reloading the GDExtension

0.3.0

Built platforms: Windows, Linux, macOS, iOS, Android

Added

• Editor plugin that registers the Lua REPL tab, where you can try Lua code using an empty LuaState
• Support for calling Godot String methods using Lua strings
• Optional support for res:// and user:// relative paths in package searchers, loadfile and dofile.
  Open the GODOT_LOCAL_PATHS library to activate this behavior.
• LuaState.LoadMode enum for specifying the Lua load mode: text, binary or any
• LuaState.do_buffer and LuaState.load_buffer methods for loading Lua code from possibly binary chunks
• LuaState.package_path and LuaState.package_cpath properties for accessing the value of Lua's package.path and package.cpath
• LuaState.get_lua_exec_dir static method to get the executable directory used to replace "!" when setting package_path and package_cpath properties.
  When running in the Godot editor, it returns the globalized version of res:// path.
  Otherwise, it returns the base directory of the executable.
• Advanced project settings for setting the LuaScriptLanguage state's package_path and package_cpath properties
• LuaState.are_libraries_opened method for checking if a subset of libraries were already opened
• LuaState.create_function method for creating a LuaFunction from a Callable
• API documentation is now available in the Godot editor

Changed

• The GDExtension is now marked as reloadable
• Renamed LuaCoroutine::LuaCoroutineStatus to LuaCoroutine::Status
• LuaState.load_file and LuaState.do_file now receive the load mode instead of buffer size
• Callable values when passed to Lua are wrapped as Lua functions when GODOT_VARIANT library is not opened, making it possible to call them in sandboxed environments
• Lua is now compiled as C++

Removed

• VariantType::has_static_method internal method

Fixed

• Bind LuaCoroutine::status property with correct enum type
• Bind LuaError::status property as int with correct enum type
• Crash when calling utility functions from Lua
• Compilation for Windows using MSVC

0.2.0

Built platforms: Windows, Linux, macOS, iOS, Android

Added

• Lua is now available as a scripting language for Godot objects, so that you can create your games entirely in Lua!
• LuaObject.get_lua_state method for getting the LuaState of a Lua object
• LuaTable.clear method
• LuaTable.rawget and LuaTable.rawset methods that don't trigger metamethods
• LuaFunction.to_callable method to easily turn Lua functions to Callable
• LuaState.load_string and LuaState.load_files for loading Lua code without executing it
• Support for passing a LuaTable as _ENV in LuaState.do_string and LuaState.do_file
• Support for PackedVector4Array variant type
• "Bouncing Logo" sample scene

Changed

• Minimum Godot version supported is now 4.3
• Android target API changed to 21 (Android Lollipop 5.0)
• In Lua, print is now bound to Godot's printt to match Lua's behavior of adding \t between passed arguments

Removed

• LuaTable.get_value and LuaTable.set_value, use LuaTable.get and LuaTable.set instead

Fixed

• Use PROPERTY_USAGE_NONE for LuaState.globals and LuaState.registry, fixing instance leaks
• Lua stack handling in LuaTable and utility function wrapper code, fixing crashes
• typeof utility function now returns a VariantType instead of a value unusable by Lua
• Lua objects coming from a different LuaState are passed as Variants to Lua instead of being unwrapped, fixing crashes

0.1.0

Built platforms: Windows, Linux/X11, OSX, iOS, Android

Notes: OSX .dylibs are not signed and will need explicit permission from the user or codesigning for running.
iOS .dylibs are not signed and require codesigning before building the application.

Added

• LuaState class for holding a Lua state and interacting with it.
  You may create as many instances as you want, each one representing an independent Lua state.
• LuaCoroutine, LuaFunction, LuaLightUserdata, LuaTable and LuaUserdata classes that wrap instances from a Lua state in Godot.
• LuaError class that represents errors from Lua code.
• Support for registering Variant type in Lua states, so that any Godot data can be manipulated in Lua.
• Support for registering Godot classes in Lua, so you can create instances and access integer constants.
• Support for adding access to Godot singleton objects in Lua, accessible directly by name.
• Support for registering Godot utility functions in Lua, like print, lerp and is_same.
• Support for adding access to Godot global enums in Lua, like OK, TYPE_STRING and SIDE_LEFT.