libLaserdockCore

https://github.com/wickedlasers/liblaserdockcore
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libLaserdockCore is a CMake-based library for Laserdock with WiFi Cube support, providing...
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### Setup Overloaded Functions

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/documentation/source/api/overload.md

Example setup including struct definitions and free functions to be overloaded.

```cpp
#define SOL_ALL_SAFETIES_ON 1
#include <sol/sol.hpp>


#include <iostream>

struct pup {
	int barks = 0;

	void bark() {
		++barks; // bark!
	}

	bool is_cute() const {
		return true;
	}
};

void ultra_bark(pup& p, int barks) {
	for (; barks-- > 0;)
		p.bark();
}

void picky_bark(pup& p, std::string s) {
	if (s == "bark")
		p.bark();
}
```

--------------------------------

### Install Library Targets and Files

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/CMakeLists.txt

Handles the installation of targets, headers, and configuration files when installation is enabled.

```cmake
if(SOL2_ENABLE_INSTALL)
	install(TARGETS sol2
		EXPORT sol2)

	install(EXPORT sol2
		NAMESPACE sol2::
		FILE sol2-targets.cmake
		DESTINATION "${CMAKE_INSTALL_DATADIR}/cmake/sol2")

	install(DIRECTORY include/sol
		DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")

	install(FILES
		"${CMAKE_CURRENT_BINARY_DIR}/cmake/sol2-config.cmake"
		"${CMAKE_CURRENT_BINARY_DIR}/cmake/sol2-config-version.cmake"
		DESTINATION "${CMAKE_INSTALL_DATADIR}/cmake/sol2")
endif()
```

--------------------------------

### Customization Example Subdirectory

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/examples/CMakeLists.txt

Includes the subdirectory for in-depth customization examples. This allows for the integration and testing of advanced Sol2 customization features.

```cmake
# # In-depth customization example
add_subdirectory(customization)
```

--------------------------------

### Enable Testing and Examples

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/CMakeLists.txt

Configures CTest and adds subdirectories for examples and tests based on project flags.

```cmake
# # Enable test harness for regular, example or single tests
	if (SOL2_DO_TESTS OR (SOL2_TESTS_EXAMPLES AND SOL2_DO_EXAMPLES))
		# enable ctest
		message(STATUS "sol2 testing enabled...")
		enable_testing()
	endif()
	
	# # # Examples
	# # Enable examples to be built against the library
	if (SOL2_DO_EXAMPLES)
		# NOTE: will also add to tests if TESTS is defined
		message(STATUS "sol2 adding examples...")
		add_subdirectory(examples)
	endif()
	
	# # # Tests
	# # Add tests here
	if (SOL2_DO_TESTS)
		# add subdir to get going
		message(STATUS "sol2 adding tests...")
```

--------------------------------

### Install Documentation

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/documentation/CMakeLists.txt

Installs the generated Sphinx documentation to the CMAKE_INSTALL_DOCDIR destination. This makes the documentation accessible after the installation step.

```cmake
# For the install target
install(DIRECTORY ${SOL2_SPHINX_BUILD_DIR}
	DESTINATION ${CMAKE_INSTALL_DOCDIR}
)
```

--------------------------------

### Sol2 Example Execution Logic

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/examples/customization/CMakeLists.txt

Conditionally creates Sol2 customization examples based on CMake variables. Use SOL2_EXAMPLES to build the default customization example and SOL2_EXAMPLES_SINGLE for a single-header variant.

```cmake
if (SOL2_EXAMPLES)
	MAKE_CUSTOMIZATION_EXAMPLE("" sol2::sol2)
endif()

if (SOL2_EXAMPLES_SINGLE)
	MAKE_CUSTOMIZATION_EXAMPLE(".single" sol2::sol2::single)
endif()
```

--------------------------------

### Compile Example Project with Premake4

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/3rdparty/nanosvg-master/README.md

Build the NanoSVG example project using premake4. Navigate to the root folder and run the appropriate command for your OS (e.g., 'premake4 gmake' for Linux).

```bash
premake4 gmake
cd build/
make
./example
```

--------------------------------

### Dynamic Loading Example Subdirectory

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/examples/CMakeLists.txt

Includes the subdirectory for dynamic loading examples if the SOL2_DYNAMIC_LOADING_EXAMPLES or SOL2_DYNAMIC_LOADING_EXAMPLES_SINGLE flags are enabled. This allows for separate compilation and testing of DLL-related features.

```cmake
if (SOL2_DYNAMIC_LOADING_EXAMPLES OR SOL2_DYNAMIC_LOADING_EXAMPLES_SINGLE)
	# # require_from_dll example
	# just add the subdirectory
	add_subdirectory(require_dll_example)
endif()
```

--------------------------------

### Configure Build Modes and Installation

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/3rdparty/libaudiodecoder/README.md

Use these commands to toggle between debug and release configurations or to perform a system-wide installation on Mac OS X.

```bash
scons debug=1
```

```bash
scons debug=0
```

```bash
scons debug=0 install
```

--------------------------------

### Sol2 Example Properties Configuration

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/examples/CMakeLists.txt

Configures properties for a Sol2 example target, including linking libraries like Threads and Lua, and setting compile definitions and options. This function is used to ensure examples are built with the correct settings.

```cmake
function(sol2_add_example_properties target-name)
	ttarget_link_libraries(${target-name}
		PUBLIC Threads::Threads Lua::Lua ${CMAKE_DL_LIBS})
	ttarget_compile_definitions(${target-name}
		PUBLIC SOL_PRINT_ERRORS=1)
	ttarget_compile_options(${target-name}
		PRIVATE
		${--template-debugging-mode}
		${--big-obj}
		${--disable-permissive}
		${--pedantic}
		${--warn-all}
		${--warn-pedantic}
		${--warn-extra}
		${--warn-errors}
		${--utf8-literal-encoding}
		${--utf8-source-encoding}

		${--allow-unknown-warning}
		${--allow-unknown-warning-option}
		${--allow-noexcept-type}
		${--allow-microsoft-cast}
		${--allow-unreachable-code}
		${--allow-padding-from-alignment}
	)

	ttarget_compile_definitions(${target-name}
		PRIVATE _CRT_SECURE_NO_WARNINGS _CRT_SECURE_NO_DEPRECATE)

	if (SOL2_CI)
		target_compile_definitions(${target-name}
			PRIVATE SOL2_CI)
	endif()
	
	if (SOL2_TESTS_EXAMPLES)
		add_test(NAME ${target-name} COMMAND ${target-name})
	endif()
	if(SOL2_ENABLE_INSTALL)
		install(TARGETS ${target-name} RUNTIME DESTINATION bin)
	endif()
endfunction()
```

--------------------------------

### Interop Examples Subdirectories

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/examples/CMakeLists.txt

Includes subdirectories for various interop examples (kaguya, tolua, LuaBridge, luwra) if SOL2_INTEROP_EXAMPLES or SOL2_INTEROP_EXAMPLES_SINGLE flags are enabled. This allows for modular inclusion of different Lua binding libraries.

```cmake
if (SOL2_INTEROP_EXAMPLES OR SOL2_INTEROP_EXAMPLES_SINGLE)
	# # interop examples
	add_subdirectory(interop/kaguya)
	add_subdirectory(interop/tolua)
	add_subdirectory(interop/LuaBridge)
	add_subdirectory(interop/luwra)
endif()
```

--------------------------------

### Conditional Example Compilation

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/examples/CMakeLists.txt

Compiles all Sol2 examples if SOL2_EXAMPLES is enabled, using the 'MAKE_EXAMPLE' function. This iterates through the found source files and creates executables for each.

```cmake
if (SOL2_EXAMPLES)
	foreach(example_source_file ${sol2.examples.sources})
		MAKE_EXAMPLE(${example_source_file} "sol2" sol2::sol2)
	endforeach()
endif()
```

--------------------------------

### Initialize a basic sol2 state

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/documentation/source/tutorial/getting-started.md

A minimal example demonstrating how to include sol, create a state, and execute a simple Lua script.

```cpp
#define SOL_ALL_SAFETIES_ON 1
#include <sol/sol.hpp> // or #include "sol.hpp", whichever suits your needs

int main(int argc, char* argv[]) {

	sol::state lua;
	lua.open_libraries(sol::lib::base);

	lua.script("print('bark bark bark!')");

	return 0;
}
```

--------------------------------

### Coroutine Execution Example

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/lua/doc/manual.html

Demonstrates the interaction between coroutine.create, coroutine.resume, and coroutine.yield.

```lua
function foo (a)
  print("foo", a)
  return coroutine.yield(2*a)
end

co = coroutine.create(function (a,b)
      print("co-body", a, b)
      local r = foo(a+1)
      print("co-body", r)
      local r, s = coroutine.yield(a+b, a-b)
      print("co-body", r, s)
      return b, "end"
end)

print("main", coroutine.resume(co, 1, 10))
print("main", coroutine.resume(co, "r"))
print("main", coroutine.resume(co, "x", "y"))
print("main", coroutine.resume(co, "x", "y"))
```

--------------------------------

### Sol2 Example Compilation Function

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/examples/CMakeLists.txt

Defines a CMake function 'MAKE_EXAMPLE' to create an executable for each Sol2 example source file. It handles naming, linking against the Sol2 library, and applying example-specific properties.

```cmake
function (MAKE_EXAMPLE example_source_file example_prefix target_sol)
	get_filename_component(example_name ${example_source_file} NAME_WE)
	file(RELATIVE_PATH example_source_file_relative ${CMAKE_SOURCE_DIR} ${example_source_file})
	get_filename_component(example_output_relative_dir ${example_source_file_relative} DIRECTORY)
	file(TO_CMAKE_PATH "${example_output_relative_dir}" example_output_relative_dir_name)
	STRING(REGEX REPLACE "/" "." example_output_relative_dir_name "${example_output_relative_dir_name}")
	if (example_output_relative_dir_name STREQUAL "")
		set(example_output_name ${example_name})
		set(example_name "${example_prefix}.${example_name}")
	else()
		set(example_output_name ${example_output_relative_dir_name}.${example_name})
		set(example_name "${example_prefix}.${example_output_relative_dir_name}.${example_name}")
	endif()

	add_executable(${example_name} ${example_source_file})
	sol2_add_example_properties(${example_name})
	target_link_libraries(${example_name}
		PRIVATE ${target_sol})
endfunction(MAKE_EXAMPLE)
```

--------------------------------

### Conditional Single-File Example Compilation

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/examples/CMakeLists.txt

Compiles Sol2 examples as single-file executables if SOL2_EXAMPLES_SINGLE is enabled. This uses the 'MAKE_EXAMPLE' function with a 'sol2.single' prefix for the target names.

```cmake
if (SOL2_EXAMPLES_SINGLE)
	foreach(example_source_file ${sol2.examples.sources})
		MAKE_EXAMPLE(${example_source_file} "sol2.single" sol2::sol2::single)
	endforeach()
endif()
```

--------------------------------

### Compile a sol2 project

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/documentation/source/tutorial/getting-started.md

Example command line for compiling a C++ file using g++ with the necessary include and library paths.

```pycon
>>> g++ -std=c++17 test.cpp -I"path/to/sol/include" -I"path/to/lua/include" -L"path/to/lua/lib" -llua
```

--------------------------------

### Lua Parameter and Vararg Handling Examples

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/lua/doc/manual.html

Demonstrates how arguments are mapped to parameters and how vararg functions collect extra arguments using the '...' syntax.

```lua
function f(a, b) end
function g(a, b, ...) end
function r() return 1,2,3 end

CALL            PARAMETERS

f(3)             a=3, b=nil
f(3, 4)          a=3, b=4
f(3, 4, 5)       a=3, b=4
f(r(), 10)       a=1, b=10
f(r())           a=1, b=2

g(3)             a=3, b=nil, ... -->  (nothing)
g(3, 4)          a=3, b=4,   ... -->  (nothing)
g(3, 4, 5, 8)    a=3, b=4,   ... -->  5  8
g(5, r())        a=5, b=1,   ... -->  2  3
```

--------------------------------

### Safe Script Execution Example

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/documentation/source/api/state.md

Demonstrates using safe_script with default and custom error handlers to manage script execution failures.

```cpp
#define SOL_ALL_SAFETIES_ON 1
#include <sol/sol.hpp>

#include <iostream>

int main() {

	std::cout << "=== safe_script usage ===" << std::endl;

	sol::state lua;
	// uses sol::script_default_on_error, which either panics or
	// throws, depending on your configuration and compiler
	// settings
	try {
		auto result1 = lua.safe_script("bad.code");
	}
	catch (const sol::error& e) {
		std::cout << "an expected error has occurred: "
		          << e.what() << std::endl;
	}

	// a custom handler that you write yourself
	// is only called when an error happens with loading or
	// running the script
	auto result2 = lua.safe_script("123 bad.code",
	     [](lua_State*, sol::protected_function_result pfr) {
		     // pfr will contain things that went wrong, for
		     // either loading or executing the script the user
		     // can do whatever they like here, including
		     // throw. Otherwise...
		     sol::error err = pfr;
		     std::cout
		          << "An error (an expected one) occurred: "
		          << err.what() << std::endl;

		     // ... they need to return the
		     // protected_function_result
		     return pfr;
	     });

	std::cout << std::endl;

	return 0;
}
```

--------------------------------

### Inheritance Registration Example

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/documentation/source/api/usertype.md

Shows how to register base classes for a usertype to enable proper derived-to-base conversions. This is crucial when dealing with inheritance hierarchies in Sol2.

```cpp
#define SOL_ALL_SAFETIES_ON 1
#include <sol/sol.hpp>

struct A {
	int a = 10;
	virtual int call() {
		return 0;
	}
	virtual ~A() {
	}
};
struct B : A {
	int b = 11;
	virtual int call() override {
		return 20;
	}
};

int main(int, char*[]) {

	sol::state lua;

	lua.new_usertype<A>("A", "call", &A::call);

	lua.new_usertype<B>("B",
	     "call",
	     &B::call,
	     sol::base_classes,
	     sol::bases<A>());

	return 0;
}
```

--------------------------------

### Configure Pkg-Config Support

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/CMakeLists.txt

Generates and installs a pkg-config file for non-Windows platforms.

```cmake
if(SOL2_ENABLE_INSTALL)
	# pkg-config support, except on Windows
	if(NOT WIN32 OR NOT CMAKE_HOST_SYSTEM_NAME MATCHES Windows)
		set(PKGCONFIG_INSTALL_DIR
			"${CMAKE_INSTALL_DATAROOTDIR}/pkgconfig"
			CACHE PATH "Path where sol2.pc is installed")

		configure_file("${CMAKE_CURRENT_SOURCE_DIR}/sol2.pc.in" "${CMAKE_CURRENT_BINARY_DIR}/sol2.pc" @ONLY)
		install(FILES "${CMAKE_CURRENT_BINARY_DIR}/sol2.pc" DESTINATION "${PKGCONFIG_INSTALL_DIR}")
	endif()
endif()
```

--------------------------------

### Demonstrate Expression Result Adjustment

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/lua/doc/manual.html

Examples showing how function call results are adjusted based on their position in an expression list.

```Lua
f()                -- adjusted to 0 results
g(f(), x)          -- f() is adjusted to 1 result
g(x, f())          -- g gets x plus all results from f()
a,b,c = f(), x     -- f() is adjusted to 1 result (c gets nil)
a,b = ...          -- a gets the first vararg argument, b gets
                   -- the second (both a and b can get nil if there
                   -- is no corresponding vararg argument)

a,b,c = x, f()     -- f() is adjusted to 2 results
a,b,c = f()        -- f() is adjusted to 3 results
return f()         -- returns all results from f()
return ...         -- returns all received vararg arguments
return x,y,f()     -- returns x, y, and all results from f()
{f()}              -- creates a list with all results from f()
{...}              -- creates a list with all vararg arguments
{f(), nil}         -- f() is adjusted to 1 result
```

--------------------------------

### Usertype Inheritance Setup

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/documentation/source/api/usertype.md

Explains how to configure base classes for Sol2 usertypes to enable proper derived-to-base conversions.

```APIDOC
## Inheritance

Sol2 can adjust pointers from derived classes to base classes at runtime. This requires explicit specification of base classes using `sol::base_classes` and `sol::bases<Types...>()`.

### When to Specify Base Classes

If your class hierarchy involves complicated virtual inheritance or multiple inheritance, you *must* specify the base classes. For simpler cases without these complexities, you might be able to omit them for a potential performance boost, but it's safer to always specify them if you plan to retrieve base classes via the Sol abstraction.

### Registration Example
```cpp
#define SOL_ALL_SAFETIES_ON 1
#include <sol/sol.hpp>

struct A {
	int a = 10;
	virtual int call() {
		return 0;
	}
	virtual ~A() {
	}
};
struct B : A {
	int b = 11;
	virtual int call() override {
		return 20;
	}
};

int main(int, char*[]) {

	sol::state lua;

	lua.new_usertype<A>("A", "call", &A::call);

	lua.new_usertype<B>("B",
	     "call",
	     &B::call,
	     sol::base_classes,
	     sol::bases<A>());

	return 0;
}
```

#### NOTE
Always specify your base classes if you intend to retrieve a base class using the Sol abstraction directly, rather than performing manual casting.
```

--------------------------------

### Initialize ldCore and Configure Audio

Source: https://context7.com/wickedlasers/liblaserdockcore/llms.txt

This snippet shows the basic setup for initializing the ldCore singleton, configuring the default audio input device, and setting up a visualizer task. Ensure Qt resources are initialized before QApplication.

```cpp
#include <ldCore/ldCore.h>
#include <ldCore/Sound/ldSoundDeviceManager.h>
#include <ldCore/Visualizations/ldVisualizationTask.h>

int main(int argc, char *argv[]) {
    // Initialize Qt resources before QApplication
    ldCore::initResources();

    QGuiApplication app(argc, argv);

    // Create and initialize ldCore singleton
    ldCore* core = ldCore::create(&app);
    core->initialize();

    // Configure audio input device
    ldSoundDeviceManager* soundMgr = core->soundDeviceManager();
    soundMgr->setDeviceInfo(soundMgr->getDefaultDevice(ldSoundDeviceInfo::Type::QAudioInput));

    // Disable startup logo (optional)
    core->task()->setIsShowLogo(false);

    // Set a visualizer to start rendering
    MyVisualizer* vis = new MyVisualizer();
    core->task()->setVisualizer(vis);

    return app.exec();
}
```

--------------------------------

### Lua Closures and Upvalues Example

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/lua/doc/manual.html

Demonstrates how local variables can become upvalues when used by inner functions (closures). Each closure created within a loop gets its own 'y' but shares the same 'x'.

```lua
a = {}
local x = 20
for i=1,10 do
  local y = 0
  a[i] = function () y=y+1; return x+y end
end
```

--------------------------------

### Call Lua Function with C Abstraction

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/documentation/source/api/stack.md

Use this function to bind to raw C functions and leverage sol2's abstractions for argument setup when interacting with Lua. The 'start' parameter indicates where to pull arguments from the stack.

```cpp
template<bool check_args = stack_detail::default_check_arguments, bool clean_stack = true, typename Fx, typename... FxArgs>
inline int call_lua(lua_State* L, int start, Fx&& fx, FxArgs&&... fxargs);
```

--------------------------------

### Initialize TCP and UDP Servers in main()

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/3rdparty/abletonlink/link/modules/asio-standalone/asio/src/examples/cpp03/tutorial/daytime_dox.txt

Create server objects for accepting TCP connections and UDP requests. This sets up the asio::io_context to manage both types of asynchronous operations.

```cpp
asio::io_context io_context;

// Create a server object to accept a TCP client connection.
tcp_server server(io_context);

// Create a server object to accept a UDP client request.
udp_server server2(io_context);

// We have created two lots of work for the asio::io_context object to do.
io_context.run();

return 0;
```

--------------------------------

### Globbing Source Files for Examples

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/examples/CMakeLists.txt

Uses file globbing to find all C++ source files for Sol2 examples, including those in 'source/', 'source/tutorials/', and 'source/docs/'. This is used to dynamically compile all example files.

```cmake
# # single-source compilable examples

file(GLOB sol2.examples.sources source/*.cpp source/tutorials/*.cpp source/tutorials/quick_n_dirty/*.cpp source/docs/*.cpp)
```

--------------------------------

### Timer.3 Source Listing

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/3rdparty/abletonlink/link/modules/asio-standalone/asio/src/examples/cpp03/tutorial/timer_dox.txt

Full source code for the Timer.3 tutorial, demonstrating the use of Boost.Bind with a free function as a completion handler.

```cpp
#include <iostream>
#include <asio.hpp>
#include <boost/bind/bind.hpp>

void print(const asio::error_code& /*e*/, int count)
{
  if (count < 5)
  {
    std::cout << "Count: " << count << std::endl;
    return;
  }

  std::cout << "Final count: " << count << std::endl;
}

int main()
{
  asio::io_context io_context;
  int count = 0;

  asio::steady_timer timer(io_context);

  timer.expires_at(timer.expiry() + std::chrono::seconds(1));
  timer.async_wait(boost::bind(print, asio::placeholders::error, ++count));

  io_context.run();

  return 0;
}
```

--------------------------------

### Implement sol::environment for script sandboxing

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/documentation/source/api/environment.md

Demonstrates creating isolated environments with and without global fallbacks.

```cpp
#define SOL_ALL_SAFETIES_ON 1
#include <sol/sol.hpp>

int main(int, char*[]) {
	sol::state lua;
	lua.open_libraries();
	sol::environment my_env(lua, sol::create);
	// set value, and we need to explicitly allow for
	// access to "print", since a new environment hides
	// everything that's not defined inside of it
	// NOTE: hiding also hides library functions (!!)
	// BE WARNED
	my_env["var"] = 50;
	my_env["print"] = lua["print"];

	sol::environment my_other_env(
	     lua, sol::create, lua.globals());
	// do not need to explicitly allow access to "print",
	// since we used the "Set a fallback" version
	// of the sol::environment constructor
	my_other_env["var"] = 443;

	// output: 50
	lua.script("print(var)", my_env);

	// output: 443
	lua.script("print(var)", my_other_env);

	return 0;
}
```

--------------------------------

### Table Creation with Arguments

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/documentation/source/api/table.md

Creates a table and populates it with provided arguments, automatically generating capacity hints.

```cpp
template <typename... Args>
table create_with(Args&&... args);
template <typename... Args>
static table create_with(lua_State* L, Args&&... args);
```

--------------------------------

### Windows Visual Studio Debug Environment Setup

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/example/CMakeLists.txt

Configures the startup project for Visual Studio 2015 and 2017 generators and copies a user project file for debugging.

```cmake
if(CMAKE_GENERATOR STREQUAL "Visual Studio 14 2015" OR CMAKE_GENERATOR STREQUAL "Visual Studio 15 2017")
    set_property(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} PROPERTY VS_STARTUP_PROJECT ${PROJECT_NAME})
    configure_file(project.vcxproj.user.in ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}.vcxproj.user @ONLY)
endif()
```

--------------------------------

### Raw Get Values from Lua Table

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/documentation/source/api/table.md

Retrieves values from a Lua table without invoking metamethods. Similar to 'get' and 'traverse_get' but operates directly on the table data.

```cpp
template<typename... Args, typename... Keys>
decltype(auto) raw_get(Keys&&... keys) const;

template<typename T, typename... Keys>
decltype(auto) traverse_raw_get(Keys&&... keys) const;

template<typename T, typename Key>
decltype(auto) raw_get_or(Key&& key, T&& otherwise) const;

template<typename T, typename Key, typename D>
decltype(auto) raw_get_or(Key&& key, D&& otherwise) const;
```

--------------------------------

### Open multiple Lua libraries

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/documentation/source/tutorial/getting-started.md

Demonstrates how to load multiple standard Lua libraries into the sol state.

```cpp
#define SOL_ALL_SAFETIES_ON 1
#include <sol/sol.hpp>

int main(int argc, char* argv[]) {
	sol::state lua;
	lua.open_libraries(sol::lib::base,
	     sol::lib::coroutine,
	     sol::lib::string,
	     sol::lib::io);

	lua.script("print('bark bark bark!')");

	return 0;
}
```

--------------------------------

### Build LuaBridge Interop Example with Sol2

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/examples/interop/LuaBridge/CMakeLists.txt

This CMake code conditionally calls the `make_luabridge_interop_example` function to build an interop example. It can be configured to build a standard version or a single-header version.

```cmake
if (SOL2_INTEROP_EXAMPLES)
	make_luabridge_interop_example(sol2::sol2 "")
endif()
if (SOL2_INTEROP_EXAMPLES_SINGLE)
	make_luabridge_interop_example(sol2::sol2::single ".single")
endif()
```

--------------------------------

### Proxy Get or Create Value

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/documentation/source/api/proxy.md

Gets the value associated with the keys if it exists. If it does not, it will set the value with a default or provided value and return the result. This function returns decltype(auto).

```cpp
template <typename T>
decltype(auto) get_or_create();
template <typename T, typename Otherwise>
decltype(auto) get_or_create( Otherwise&& other );

```

--------------------------------

### Proxy Get Value or Default

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/documentation/source/api/proxy.md

Gets the value associated with the keys and converts it to type T. If the value is not of the proper type, it returns a sol::nullopt. An 'otherwise' value can be provided.

```cpp
template <typename T, typename Otherwise>
optional<T> get_or( Otherwise&& otherise ) const;

```

--------------------------------

### Proxy Get Value (Explicit)

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/documentation/source/api/proxy.md

Explicitly gets the value associated with the keys the proxy was generated for and converts it to the type T. This function returns decltype(auto), allowing for perfect forwarding.

```cpp
template <typename T>
decltype(auto) get( ) const;

```

--------------------------------

### Enable Qt Quick Support in CMake

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/ldCore/CMakeLists.txt

Configures sources, compile definitions, and links the Qt Quick module. Includes conditional configuration for OpenGL simulator support.

```cmake
if(LD_CORE_ENABLE_QT_QUICK)
    target_sources(${PROJECT_NAME} PRIVATE
        ${SRCDIR}/Simulator/ldQSGSimulatorItem.cpp
        ${INCDIR}/Simulator/ldQSGSimulatorItem.h
        )

    target_compile_definitions(${PROJECT_NAME} PRIVATE LD_CORE_ENABLE_QT_QUICK)

    find_package(Qt${QT_VERSION_MAJOR} ${QT_MIN_VERSION} COMPONENTS Quick REQUIRED)
    target_link_libraries(${PROJECT_NAME} PUBLIC Qt::Quick)

    if(LD_CORE_USE_OPENGL)
        target_sources(${PROJECT_NAME} PRIVATE
            ${SRCDIR}/Simulator/ldSimulatorItem.cpp
            ${INCDIR}/Simulator/ldSimulatorItem.h
            ${SRCDIR}/Simulator/ldSimulatorRenderer.cpp
            ${INCDIR}/Simulator/ldSimulatorRenderer.h
            )
        target_compile_definitions(${PROJECT_NAME} PUBLIC LD_CORE_ENABLE_OPENGL_SIMULATOR)
    endif()
endif()
```

--------------------------------

### Define LuaBridge Interop Example Function

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/examples/interop/LuaBridge/CMakeLists.txt

This function defines a CMake target for a LuaBridge interop example. It links against Lua, LuaBridge, and Sol2 libraries. Specific compiler options are set for MSVC and other compilers.

```cmake
function (make_luabridge_interop_example target_library example_suffix)
	set(example_name luabridge_interop_example)
	set(example_name "${example_name}${example_suffix}")
	
	add_executable(${example_name} source/LuaBridge.cpp)
	target_link_libraries(${example_name} 
		PRIVATE Lua::Lua ${LUABRIDGE_LIBRARIES} 
		${target_library} ${CMAKE_DL_LIBS})

	if (MSVC)
		target_compile_options(${example_name}
			PRIVATE /std:c++latest /EHsc "$<$<CONFIG:Debug>:/MDd>"
			"$<$<CONFIG:Release>:/MD>"
			"$<$<CONFIG:RelWithDebInfo>:/MD>"
			"$<$<CONFIG:MinSizeRel>:/MD>")
		target_compile_definitions(${example_name}
			PRIVATE /W1
			UNICODE _UNICODE 
			_CRT_SECURE_NO_WARNINGS _CRT_SECURE_NO_DEPRECATE)
	else()
		target_compile_options(${example_name}
			PRIVATE -std=c++1z -w
			-Wno-unknown-warning -Wno-unknown-warning-option)
	endif()

	if (SOL2_TESTS_INTEROP_EXAMPLES)
		add_test(NAME ${example_name} COMMAND ${example_name})
	endif()
endfunction()
```

--------------------------------

### Configure SimpleCrypt Library

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/3rdparty/simplecrypt/CMakeLists.txt

Sets up the simplecrypt library, including its sources, include directories, and compile definitions. It also handles conditional linking for OpenMP.

```cmake
cmake_minimum_required(VERSION 3.10)

set(SIMPLECRYPT_XOR_KEY "0" CACHE STRING "Simplecrypt ")

add_library(simplecrypt)

set_property(TARGET simplecrypt PROPERTY AUTOMOC OFF)
set_property(TARGET simplecrypt PROPERTY AUTORCC OFF)
set_property(TARGET simplecrypt PROPERTY AUTOUIC OFF)

target_include_directories(simplecrypt PUBLIC .)

target_sources(simplecrypt PRIVATE
    simplecrypt.cpp
    simplecrypt.h
    )

find_package(Qt${QT_VERSION_MAJOR} CONFIG REQUIRED Core)
target_link_libraries(simplecrypt PRIVATE
    Qt::Core
    )

target_compile_definitions(simplecrypt PRIVATE SIMPLECRYPT_XOR_KEY=${SIMPLECRYPT_XOR_KEY})

if(LD_CORE_ENABLE_OPENMP)
    target_link_libraries(simplecrypt PUBLIC
        3rdparty::openmp
        )
endif()


if(NOT CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR)
    add_library(${PROJECT_NAME}::simplecrypt ALIAS simplecrypt)
endif()
```

--------------------------------

### Get Values from Lua Table

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/documentation/source/api/table.md

Retrieves values from a Lua table. 'get' can fetch multiple values into a std::tuple, while 'traverse_get' retrieves a single value through nested lookups. Use 'get_or' for default values.

```cpp
template<typename... Args, typename... Keys>
decltype(auto) get(Keys&&... keys) const;

template<typename T, typename... Keys>
decltype(auto) traverse_get(Keys&&... keys) const;

template<typename T, typename Key>
decltype(auto) get_or(Key&& key, T&& otherwise) const;

template<typename T, typename Key, typename D>
decltype(auto) get_or(Key&& key, D&& otherwise) const;
```

--------------------------------

### Creating and Managing Threads

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/documentation/source/api/thread.md

Demonstrates how to create and interact with `sol::thread` objects, including retrieving their state and status.

```APIDOC
## Thread Constructors

### `thread(stack_reference r)`
Constructs a `thread` object from a `stack_reference`.

### `thread(lua_State* L, int index = -1)`
Constructs a `thread` object from a `lua_State` at a specific stack index.

### `thread(lua_State* L, lua_State* actual_thread)`
Constructs a `thread` object from a `lua_State` and an actual thread state.

## Thread Member Functions

### `state_view state() const`
Retrieves the current state of the thread, returning a `state_view` that can be manipulated.

### `lua_State* thread_state() const`
Retrieves the `lua_State*` that represents the thread.

### `thread_status status() const`
Retrieves the status of the thread, indicating its current state.

### `bool is_main_thread() const`
Checks if the current thread is the main Lua thread.
```

--------------------------------

### Example of sol::protect with usertypes

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/documentation/source/api/protect.md

This C++ example demonstrates using sol::protect with a usertype. It exposes a 'gen' method of 'protect_me' to Lua, ensuring that calls to it are protected. When an incorrect argument is passed in Lua, the pcall wrapper fails as expected.

```cpp
#define SOL_ALL_SAFETIES_ON 1
#include <sol/sol.hpp>


int main(int, char*[]) {

	struct protect_me {
		int gen(int x) {
			return x;
		}
	};

	sol::state lua;
	lua.open_libraries(sol::lib::base);
	lua.new_usertype<protect_me>(
	     "protect_me", "gen", sol::protect(&protect_me::gen));

	lua.script(R"__( 
pm = protect_me.new() 
value = pcall(pm.gen,"wrong argument") 
)__");
	bool value = lua["value"];
	SOL_ASSERT(!value);

	return 0;
}
```

--------------------------------

### Configure CMake for libqtqmltricks

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/3rdparty/lib-qt-qml-tricks/CMakeLists.txt

Initializes the library target and sets up archive creation flags for compatibility with Xcode generators.

```cmake
cmake_minimum_required(VERSION 3.11)

add_library(libqtqmltricks)

SET(CMAKE_C_ARCHIVE_CREATE   "<CMAKE_AR> Scr <TARGET> <LINK_FLAGS> <OBJECTS>")
SET(CMAKE_CXX_ARCHIVE_CREATE "<CMAKE_AR> Scr <TARGET> <LINK_FLAGS> <OBJECTS>")
if(CMAKE_GENERATOR STREQUAL Xcode)
    SET(CMAKE_C_ARCHIVE_FINISH   "<CMAKE_RANLIB> -no_warning_for_no_symbols -c <TARGET>")
    SET(CMAKE_CXX_ARCHIVE_FINISH "<CMAKE_RANLIB> -no_warning_for_no_symbols -c <TARGET>")
endif()
```

--------------------------------

### file:seek

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/lua/doc/manual.html

Sets and gets the file position.

```APIDOC
## file:seek

### Description
Sets and gets the file position, measured from the beginning of the file.

### Parameters
#### Query Parameters
- **whence** (string) - Optional - Base position: 'set' (beginning), 'cur' (current), 'end' (end of file). Default is 'cur'.
- **offset** (number) - Optional - Offset from base. Default is 0.
```

--------------------------------

### Conditional Build for Dynamic Loading Examples

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/examples/require_dll_example/CMakeLists.txt

This code checks if the Lua library is statically linked. If it is, the script returns to avoid linking issues. Otherwise, it conditionally calls the 'make_require_from_dll_example' function to build dynamic loading examples based on CMake variables.

```cmake
list(GET LUA_LIBRARIES 0 lua_lib_target)
get_target_property(lua_lib_type ${lua_lib_target} TYPE)
if (lua_lib_type MATCHES "STATIC")
	# avoid multiply defined references due to linking in the same static library
	# twice over, and get "multiple definition" errors during linking
	return()
endif()

if (SOL2_DYNAMIC_LOADING_EXAMPLES)
	make_require_from_dll_example(sol2::sol2 "")
endif()
if (SOL2_DYNAMIC_LOADING_EXAMPLES_SINGLE)
	make_require_from_dll_example(sol2::sol2::single ".single")
endif()
```

--------------------------------

### get

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/documentation/source/api/stack.md

Retrieves a value from the Lua stack at a specified index.

```APIDOC
## get

### Description
Retrieves the value of the object at the specified index in the stack. The return type depends on the template parameter T.

### Parameters
- **L** (lua_State*) - Required - The Lua state.
- **index** (int) - Optional - The stack index (defaults to -1).
- **tracking** (record&) - Optional - Tracking record for the operation.
```

--------------------------------

### Create Lua Values and Tables

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/documentation/source/api/lua_value.md

Demonstrates initializing various Lua values, including nested tables and custom C++ objects, using sol::lua_value and sol::array_value.

```cpp
#define SOL_ALL_SAFETIES_ON 1
#include <sol/sol.hpp>

#include <iostream>
#include <string>

struct int_entry {
	int value;

	int_entry() : value(0) {
	}

	int_entry(int v) : value(v) {
	}

	std::string to_string() const {
		return "int_entry(" + std::to_string(value) + ")";
	}

	bool operator==(const int_entry& e) const {
		return value == e.value;
	}
};

int main(int, char*[]) {

	std::cout << "=== sol::lua_value/sol::array_value ==="
	          << std::endl;

	sol::state lua;
	lua.open_libraries(sol::lib::base, sol::lib::io);

	sol::lua_value lv_int(lua, 56);
	sol::lua_value lv_int_table(lua, { 1, 2, 3, 4, 5 });
	sol::lua_value lv_map(lua,
	     { { "bark bark", "meow hiss!" },
	          { 3, 4 },
	          { ":D", 6 } });
	sol::lua_value lv_mixed_table(lua,
	     sol::array_value {
	          1, int_entry(2), 3, int_entry(4), 5 });
	sol::lua_value lv_mixed_nested_table(lua,
	     sol::array_value { 1,
	          int_entry(2),
	          3,
	          int_entry(4),
	          sol::array_value { 5, 6, int_entry(7), "8" } });

	const auto& code = R"(
		function real_print_recursive (e, level)
			local et = type(e)
			if et == 'table' then
				io.write("{ ")
				local iters = 0
				for k, v in pairs(e) do
					if iters ~= 0  then
						io.write(", ")
					end
					real_print_recursive(k, level + 1)
					io.write(": ")
					real_print_recursive(v, level + 1)
					iters = iters + 1
				end
				io.write(" }")
			elseif et == 'string' then
				io.write('"') 
				io.write(e) 
				io.write('"')
			else
				io.write(tostring(e))
			end
			if level == 0 then
				io.write("\n")
			end
			end

		function print_recursive (e)
			real_print_recursive(e, 0)
		end
	)";

	sol::optional<sol::error> maybe_error
	     = lua.safe_script(code, sol::script_pass_on_error);
	if (maybe_error) {
		std::cerr << maybe_error->what() << std::endl;
		return 1;
	}
	sol::function print_recursive = lua["print_recursive"];

	// show it printed out
	std::cout << "lv_int: " << std::endl;
	print_recursive(lv_int);
	std::cout << std::endl;

	std::cout << "lv_int_table: " << std::endl;
	print_recursive(lv_int_table);
	std::cout << std::endl;

	std::cout << "lv_map: " << std::endl;
	print_recursive(lv_map);
	std::cout << std::endl;

	std::cout << "lv_mixed_table: " << std::endl;
	print_recursive(lv_mixed_table);
	std::cout << std::endl;

	std::cout << "lv_mixed_nested_table: " << std::endl;
	print_recursive(lv_mixed_nested_table);
	std::cout << std::endl;

	std::cout << std::endl;

	return 0;
}
```

--------------------------------

### Runtime Extension Example

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/documentation/source/api/usertype.md

Demonstrates adding functions to a usertype at runtime through both the Sol2 API and a Lua script. Functions added this way are available to all instances of the usertype.

```cpp
#define SOL_ALL_SAFETIES_ON 1
#include <sol/sol.hpp>

#include <iostream>

struct object {
	int value = 0;
};

int main(int, char*[]) {

	std::cout << "==== runtime_extension =====
```

--------------------------------

### Get lua_State pointer

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/documentation/source/api/reference.md

Retrieves the lua_State associated with the reference.

```cpp
lua_State* lua_state() const noexcept;
```

--------------------------------

### Setup USB and Network Hardware Managers

Source: https://context7.com/wickedlasers/liblaserdockcore/llms.txt

This function demonstrates how to set up the `ldHardwareManager` to discover and manage both USB and network-connected Laserdock devices. It initializes device check timers and connects to device count change signals.

```cpp
#include <ldCore/ldCore.h>
#include <ldCore/Hardware/ldHardwareManager.h>
#include <ldCore/Hardware/ldUSBHardwareManager.h>
#include <ldCore/Hardware/ldNetworkHardwareManager.h>

void setupHardware() {
    ldCore* core = ldCore::instance();
    ldHardwareManager* hwMgr = core->hardwareManager();

    // Add USB hardware manager
    ldUsbHardwareManager* usbMgr = new ldUsbHardwareManager(core->filterManager());
    hwMgr->addHardwareManager(usbMgr);

    // Add Network hardware manager for WiFi Cube support
    ldNetworkHardwareManager* netMgr = new ldNetworkHardwareManager(core->filterManager());
    hwMgr->addHardwareManager(netMgr);

    // Initialize device check timer
    hwMgr->initCheckTimer();

    // Connect to device count changes
    QObject::connect(hwMgr, &ldHardwareManager::deviceCountChanged, [](uint count) {
        qDebug() << "Connected devices:" << count;
    });

    // Activate all connected devices
    hwMgr->setConnectedDevicesActive(true);

    // Get current device count
    int deviceCount = hwMgr->getDeviceCount();

    // Access individual devices
    std::vector<ldHardware*> devices = hwMgr->devices();
    for (ldHardware* device : devices) {
        qDebug() << "Device ID:" << device->id();
    }

    // Force a specific DAC rate (optional)
    hwMgr->setForcedDACRate(30000);  // 30kHz
}

```

--------------------------------

### Get Environment Variable

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/lua/doc/manual.html

Retrieves the value of a process environment variable.

```APIDOC
## os.getenv (varname)

### Description
Returns the value of the process environment variable `varname`, or **nil** if the variable is not defined.

### Parameters
* **varname** (string) - The name of the environment variable.

### Returns
* (string or nil) - The value of the environment variable, or **nil** if not defined.
```

--------------------------------

### Get Field Functions

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/documentation/source/api/stack.md

Functions for retrieving fields from Lua tables.

```APIDOC
## `sol::stack::get_field`

### Description
Retrieves a field from a Lua table. It pushes the key onto the stack and performs `lua_getfield`. Optimizations are applied for C-style string keys or global fields. The retrieved value is left on the stack.

### Method
`template <bool global = false, typename Key> void get_field( lua_State* L, Key&& k [, int objectindex] );`

### Endpoint
N/A (C++ function)

### Parameters
- `L` (lua_State*) - The Lua state.
- `global` (bool) - If true, treats the key as a global.
- `k` (Key&&) - The key of the field to retrieve.
- `objectindex` (int, optional) - The index of the object in the stack from which to retrieve the field.

### Request Example
```cpp
// Get a field from the current table
sol::stack::get_field(L, "my_key");
// The value is now on top of the stack

// Get a global field
sol::stack::get_field<true>(L, "global_var");

// Get a field from a specific stack index
sol::stack::get_field(L, "nested_key", -2);
```

### Response
None (void function). The retrieved value is left on the Lua stack.
```

--------------------------------

### Configure Visual Studio for 64-bit Compiler Tools

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/documentation/source/errors.md

Add this to your .vcxproj file to use the 64-bit compiler, which increases available heap space and resolves "compiler out of heap space" errors. This is typically placed under the \<Import .../> statement.

```xml
<PropertyGroup>
        <PreferredToolArchitecture>x64</PreferredToolArchitecture>
</PropertyGroup>
```

--------------------------------

### Configure Basic Laser Filters

Source: https://context7.com/wickedlasers/liblaserdockcore/llms.txt

Demonstrates instantiation and configuration of various filter classes for color, transformation, and effect processing. Requires including ldBasicFilters.h.

```cpp
#include <ldCore/Filter/ldBasicFilters.h>

void setupIndividualFilters() {
    // Color replacement filter
    ldColorFilter colorFilter;
    colorFilter.enabled = true;
    colorFilter.r = 1.0f;  // Red component
    colorFilter.g = 0.0f;  // Green component
    colorFilter.b = 0.5f;  // Blue component

    // Flip/mirror filter
    ldFlipFilter flipFilter;
    flipFilter.flipX = true;   // Mirror horizontally
    flipFilter.flipY = false;  // Don't mirror vertically

    // Zoom filter with independent X/Y control
    ldZoomFilter zoomFilter;
    zoomFilter.set_xScale(1.5f);  // 150% X scale
    zoomFilter.set_yScale(0.8f);  // 80% Y scale

    // Position offset filter
    ldPosFilter posFilter;
    posFilter.set_x(0.2f);  // Offset X
    posFilter.set_y(-0.1f); // Offset Y

    // Scale filter
    ldScaleFilter scaleFilter;
    scaleFilter.setEnabled(true);
    scaleFilter.setXScale(0.9f);
    scaleFilter.setYScale(0.9f);

    // Shift filter (with scale awareness)
    std::vector<ldScaleFilter*> scales = {&scaleFilter};
    ldShiftFilter shiftFilter(scales);
    shiftFilter.x = 0.1f;
    shiftFilter.y = 0.05f;

    // TTL output mode
    ldTtlFilter ttlFilter;
    ttlFilter.m_enabled = true;  // Enable TTL color mode

    // Hue matrix filter (complex hue transformation)
    ldHueMatrixFilter hueMatrix;
    hueMatrix.m_enabled = true;
    hueMatrix.m_value = 0.7f;  // 0 to 1

    // Apply filter to a vertex
    ldVertex v;
    v.x = 0.5f; v.y = 0.5f;
    v.r = 1.0f; v.g = 0.0f; v.b = 0.0f;
    colorFilter.process(v);
}
```

--------------------------------

### Check for nil value

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/documentation/source/api/object.md

Example usage of comparing an object against sol::lua_nil.

```cpp
if (myobj == sol::lua_nil) {
        // doesn't have anything...
}
```

--------------------------------

### Table Creation with Capacity

Source: https://github.com/wickedlasers/liblaserdockcore/blob/master/modules/ldLuaGame/3rdparty/sol2/documentation/source/api/table.md

Creates a table with optional pre-set values and capacity hints for array and hashable entries.

```cpp
table create(int narr = 0, int nrec = 0);
template <typename Key, typename Value, typename... Args>
table create(int narr, int nrec, Key&& key, Value&& value, Args&&... args);

static table create(lua_State* L, int narr = 0, int nrec = 0);
template <typename Key, typename Value, typename... Args>
static table create(lua_State* L, int narr, int nrec, Key&& key, Value&& value, Args&&... args);
```
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