How do I expose my C++ classes to ChaiScript?

Use chaiscript::fun to register class methods and constructors, similar to functions; the README's examples show registering member functions, and you can wrap classes for full integration with type safety.

ChaiScript vs Lua for embedding in C++?

ChaiScript offers better type safety and seamless C++ integration out-of-the-box, while Lua has a larger ecosystem and is often more performance-tuned; choose ChaiScript for strict C++ compatibility and Lua for broader library support.

Is ChaiScript good for game modding?

Yes, its type safety and easy C++ binding make it suitable for exposing game APIs, but consider performance overhead for real-time scripting; the samples directory includes examples for callback-based interactions.

How to handle script errors in ChaiScript?

Script errors throw exceptions in C++ that can be caught using try-catch blocks; the engine provides detailed error messages, aiding in debugging user-written scripts.

What are the memory usage implications of ChaiScript?

As a header-only library with dynamic scripting, it can increase memory footprint due to runtime type information and script evaluation; optimize by limiting exposed objects and using compiled modules for standard library.

Can I use ChaiScript with CMake or other build systems?

Yes, its header-only nature simplifies integration; just add the include path, and vcpkg support is available for package management, as noted in the README's installation section.

Open-Awesome

ChaiScript

NOASSERTIONC++v6.1.0

A header-only embedded scripting language designed from the ground up for seamless integration with C++.

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3.1k stars363 forks0 contributors

What is ChaiScript?

ChaiScript is an embedded scripting language designed specifically for C++ applications, allowing developers to integrate scripting capabilities directly into their C++ projects. It solves the problem of adding dynamic scripting to C++ programs while maintaining type safety and leveraging modern C++ features. The language is header-only, making it easy to incorporate without extensive build system modifications.

Target Audience

C++ developers who need to add scripting functionality to their applications, such as game developers, simulation engineers, or tool creators requiring user-customizable behavior.

Value Proposition

Developers choose ChaiScript because it is built from the ground up for C++, ensuring seamless integration, type safety, and support for advanced C++ features like overloaded functions and STL containers. Its header-only design simplifies adoption compared to other embedded scripting solutions.

Overview

Embedded Scripting Language Designed for C++

Use Cases

Best For

Adding user-configurable scripting to C++ desktop applications
Embedding scripting in game engines for modding or gameplay logic
Creating plugins or extensions for C++-based tools
Building simulation environments with dynamic scriptable components
Prototyping C++ functionality with quick script iterations
Teaching C++ concepts alongside scripting in educational tools

Not Ideal For

Applications requiring maximum performance with minimal scripting overhead, such as real-time game loops or high-frequency trading systems
Projects using non-C++ languages or needing cross-language scripting across multiple programming environments
Teams wanting a scripting language with a vast ecosystem and extensive third-party libraries, like Python or Lua
Environments with strict C++ compiler limitations or legacy systems lacking C++17 support

Pros & Cons

Pros

Header-Only Integration

Easy to add to existing C++ projects without complex build system changes, as highlighted in the README's key features, reducing setup friction.

Type Safety

Ensures scripts interact safely with C++ types, preventing common runtime errors and maintaining reliability, a core advantage over loosely typed alternatives.

Modern C++ Support

Built with C++17 and variadic templates, it seamlessly works with callbacks, overloaded functions, and STL containers, aligning with contemporary C++ practices.

Natural C++ Integration

Designed from the ground up for C++, allowing direct exposure of C++ functions and classes with minimal boilerplate, as shown in the example.cpp samples.

Cons

Limited Ecosystem

Has fewer third-party libraries and community resources compared to established scripting languages like Lua or Python, which can slow down development of complex features.

Compile-Time Overhead

The header-only design can increase compile times in large projects, as all template instantiations are processed at compile time, potentially slowing builds.

C++17 Dependency

Requires a C++17-compliant compiler, which may exclude older or restricted development environments, limiting adoption in legacy systems.

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