How To Code Roblox Lua
How To Use Roblox Lua

Read the Lua C API Reference. You've learned enough now to get going with it. Did you see my note about clearing the stack in howdy? You may want to investigate that. Find out how to integrate Lua closures with your C functions. If you want to hide or catch console output from Lua, you need to figure that out as well. Telamon builderman shirt t-shirt pwn pwnage pwned epic cool jean clothes muscle cloak armor hoodie jacket free DC Camo Camouflague Camouflage camoflage American Eagle admin vip funny awesome fun cheap best selling paintball skate camo army general private christmas elf elves presents pvt gun ninja armour halloween summer spring girl man boy.

Lua is a scripting language originally created in C (An old but popular programming language today) in 1993 by 3 programmers, Roberto Ierusalimschy, Luiz Henrique de Figueiredo, and Waldemar Celes, in an effort to allow players to add in dynamic content to games and applications. In this wikia, we will be focusing on the Lua that Roblox. I didnt knew i had my voice changer on, OOF. You’re pointlessly sending the LocalPlayer through a remote on the client-side. The first argument of any remote call is the client who made the request, so get rid of the sender - it’s redundant.

Lua

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Sep. 30, 2017(by zap4life116)

Executing Lua programs from a host

The next step is to execute Lua programs from your C or C++ code. We'll createthe Lua state object as above, load a file from disk and execute it.

Put this into runlua.cpp or runlua.c: Clash of clans free download on pc windows 10.

You can reuse the compilation arguments from above:

Running Lua programs

Let's test this with some Lua programs. The first one prints the Lua versionand exits.

You may want to double-check that it works by running lua hello.lua. It maynot be important for this trivial program, but can become important when youtry more advanced ones.

How To Code Roblox Lua

Now try it with runlua:

You can even run bytecode-compiled programs:

We should also check that the error handling works. Put some garbage in a filecalled error.lua, for example

Running it produces

Calling C functions from Lua

It gets very interesting when Lua programs call back to your C or C++functions. We'll create a function called howdy that prints its inputarguments and returns the integer 123.

To be on the safe side, we'll declare C linkage for the function in the C++version of the program. This has to do with name mangling,but in this case, it really doesn't matter: Lua just receives a pointer to afunction, and that's that. But if you start using dynamic loading of sharedlibraries through dlopen and dlsym, this will be an issue. So let's do itcorrect from the start.

Copy the above program into a file called callback.cpp and add the howdyfunction.

We have to pass the address of this function to Lua along with a name. Put thefollowing line somewhere between the call to lua_newstate andluaL_loadfile:

Create a test program called callback.lua

Compile and test it

I told you it was easy!

What next?

Read the Lua C APIReference. You've learned enough now to get going with it. Did you see mynote about clearing the stack in howdy? You may want to investigate that.

Find out how to integrate Lua closures with your C functions.

If you want to hide or catch console output from Lua, you need to figure thatout as well. I once did it by trapping io.write(); I copied its code fromlualib.c and changed io_write to point to my own function. There isprobably a better way to do it, though. Doing so is useful for things like gameprogramming.

Use RAIIor smart pointers to manage resources like lua_State.

I also strongly recommend to try out LuaJIT.Calling into your functions there is even easier, using LuaJIT's foreignfunction library. I'll write a blog post on how todo that as well. In short, just create ordinary C functions, compile as ashared library, copy their signatures into pure Lua source code and hook themup with LuaJIT's FFIlibrary.

How To Use Roblox Lua

LuaJIT runs between 10-20 and up to 135 times faster than interpreted Lua, soit's definitely worth it.

2021.11

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