Lua

Lua
Basics
About Syntax Datatypes Hello World
Intermediate
Using Metatables Writing files Basic Object-orientation example Vararg statements MMF Interface
Advanced
Iterators How to take over Eastern Europe Basic Object engine
XLua
MMF Interface WIN Interface OpenGL C Libraries
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This article assumes the use of Lua 5.1. Information may not be accurate or may need revision if you are using a different version.

Lua is a kind of scripting language known as an extension language. Though standalone programs can be coded entirely in Lua, it is intended to be used as a way for users of a program to easily add functionality through scripts. Three Lua extensions exist for MMF2, and a few users of said program use it as a way of working around MMF's lack of a scripting language. A Lua script can also run much faster than an equivalent script made through MMF's event editor, especially if using XLua's or Lua+'s MMF interface functions. Retriever II has used the language extensively by submitting howtos, creating an NCFC booth about Lua, coding the Tile Lattice level editor, and even programming the third Lua extension XLua.

MFGG projects that use or may use Lua:

• Pocket Mario (?)
• Super Daisy: Legend of the Ztar Rod (?)
• MPUZ Revolution
• COSINE
• Tile Lattice
• MechaSource Games

Advantages

• Generally much faster than MMF alone
• Less hassle involved in changing code
• Opens up the possibility for moddable games
• XLua includes Windows messaging and keyboard intercept capability, and other extensions can be compiled to be compatible with it through libraries

Disadvantages

• XLua and Lua+ have only limited integration through the MMF interface (but more features can be added on request)
• Moddable games usually require an entire runtime engine to be written
• Occasionally has ambiguous error messages, making debugging difficult
• Lua and Lua+ extensions are quite unstable

External Links

• Wikipedia Article
• Official Manual
• Online version of Lua5.1.exe