Sign In Start Free Trial
Account

Add to playlist

Create a Playlist

Modal Close icon
You need to login to use this feature.
  • Book Overview & Buying  Integrate Lua with C++
  • Table Of Contents Toc
  • Feedback & Rating feedback
 Integrate Lua with C++

Integrate Lua with C++

By : Wenhuan Li
4.5 (2)
close
close
 Integrate Lua with C++

Integrate Lua with C++

4.5 (2)
By: Wenhuan Li

Overview of this book

C++ is a popular choice in the developer community for building complex and large-scale performant applications and systems. Often a need arises to extend the system at runtime, without recompiling the whole C++ program. Using a scripting language like Lua can help achieve this goal efficiently. Integrate Lua to C++ is a comprehensive guide to integrating Lua to C++ and will enable you to achieve the goal of extending C++ programs at runtime. You’ll learn, in sequence, how to get and compile the Lua library, the Lua programming language, calling Lua code from C++, and calling C++ code from Lua. In each topic, you’ll practice with code examples, and learn the in-depth mechanisms for smooth working. Throughout the book, the latter examples build on the earlier ones while also acting as a standalone. You’ll learn to implement Lua executor and Lua binding generator, which you can use in your projects directly with further customizations. By the end of this book, you’ll have mastered integrating Lua into C++ and using Lua in your C++ project efficiently, gained the skills to extend your applications at runtime, and achieved dynamic and adaptable C++ development.
Table of Contents (18 chapters)
close
close
Free Chapter
1
Part 1 – Lua Basics
4
Part 2 – Calling Lua from C++
8
Part 3 – Calling C++ from Lua
12
Part 4 – Advanced Topics

Control structures

The Lua control structures are quite similar to the C++ control structures. Try to compare them with their C++ counterparts as you learn about them.

For the code shown in this section, you can put them in another Lua script file named 2-controls.lua, and import it with dofile in the Lua interpreter. You can put each example in a separate function so that you can test the code with different parameters. By now, you should be comfortable using the Lua interpreter, so we will not show how to do it in the rest of this chapter.

We will first explore how to do conditional branching in Lua, and then we will venture into loops.

if then else

The Lua if control structure is similar to the C++ one. However, you do not need the parentheses around the test condition, and you do not use the curly brackets. Instead, you will need the then keyword and the end keyword to delimit the code branches, for example:

if a < 0 then a = 0 end
if a > 0 then return a else...

Unlock full access

Continue reading for free

A Packt free trial gives you instant online access to our library of over 7000 practical eBooks and videos, constantly updated with the latest in tech

Create a Note

Modal Close icon
You need to login to use this feature.
notes
bookmark search playlist download font-size

Change the font size

margin-width

Change margin width

day-mode

Change background colour

Close icon Search
Country selected

Close icon Your notes and bookmarks

Delete Bookmark

Modal Close icon
Are you sure you want to delete it?
Cancel
Yes, Delete

Delete Note

Modal Close icon
Are you sure you want to delete it?
Cancel
Yes, Delete

Edit Note

Modal Close icon
Write a note (max 255 characters)
Cancel
Update Note

Confirmation

Modal Close icon
claim successful

Buy this book with your credits?

Modal Close icon
Are you sure you want to buy this book with one of your credits?
Close
YES, BUY