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  • Book Overview & Buying  Integrate Lua with C++
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 Integrate Lua with C++

Integrate Lua with C++

By : Wenhuan Li
4.5 (2)
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 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)
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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...
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Tech Concepts
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Programming languages
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