Color Depth (the amount of different color values (for each r, g, b, a))

Lua To Luac Converter
Lua C To Lua Converter Online

I have found that C code can be translated into Lua code in a mostly mechanical way if want to preserve structure over efficiency. Even something like a pointer into a C array can be translated into an index into a Lua table array. That was the case with Lua's lstrlib.c translated into Lua 3, and it appears also with Yueliang 4. This project is useful in any environment where Lua code is accepted, with the powerful option of simply declaring any existing API using TypeScript declaration files. Type Safety Static types can ease the mental burden of writing programs, by automatically tracking information the programmer would otherwise have to track mentally in some fashion. Convert lua txt. Online converter. Converting a file lua. Online converter. Transform a file lua.

parse(): is called once on spawn. It converts the hex string into a table containing the rgba values for each picture
paPi(): paints one pixel in the specified color
clrM: a constant that makes the colors look realistic (reduces the glow effect)
xO and yO: the x and y offsets of the image. This will be the upper left corner of the painted image
startL: an additional offset (used for big images that need more then one lua script)
hx: the minified textstring containing the imagedata
rpl, rplc: tables that contain information how to 'unzip' the imagedata textstring

Adjust the code below to your personal requirements:

e=stringp=tonumberx=screen--yyy--function a(b)c=1while d[c]dob=e.gsub(b,d[c][2],d[c][1])c=c+1 endc=1while f[c]dob=e.gsub(b,f[c][2],f[c][1])c=c+1 endg={}h=1i=0j=e.find(b,';')while j dog[h]={}k=e.sub(b,i+1,j)l=1m=0while m< e.len(k)don=e.sub(k,m+1,m+1)o=e.sub(k,m+1,m+8)if not(o';')thenc=p('0x'.e.sub(o,1,2))q=p('0x'.e.sub(o,3,4))r=p('0x'.e.sub(o,5,6))s=p('0x'.e.sub(o,7,8))if s0 theng[h][l]=false else g[h][l]={}g[h][l][1]=cg[h][l][2]=qg[h][l][3]=rg[h][l][4]=s endendm=m+8l=l+1 endi=jj=e.find(b,';',j+1)h=h+1 endreturn g endt=0.4function u(v,w,c,q,r,s)if not c thenc=0endif not q thenq=0endif not r thenr=0endif not s thens=0endx.setColor(c*t,q*t,r*t,s)x.drawRectF(v-1,w-1,1,1)endy=0z=0function onDraw()A=x.getWidth()B=x.getHeight()if not C thenreturn endk=1while not(C[k]nil)doo=1while not(C[k][o]nil)doif not C[k][o]false thenu(y+o,z+D-1+k,C[k][o][1],C[k][o][2],C[k][o][3],C[k][o][4]*E)endo=o+1 endk=k+1 endendE=1function onTick()--E=input.getNumber(1)endD=___START___f=___SRPL___H=___HEX___d=___DRPL___C=a(H)

The not minified and easy to read version of the above code:

(copy this to the upper codearea to use it for code generation)

Initial Examples
More examples

Introduction

Allowing users to extend your apps with scripts it is an amazing feature. There are many languages for this purpose, but Lua is the choice today, it is powerful and easy to embed.

Lua is an important tool for many industries, it has been used inside Game Engines, Databases like Redis, and HTTP servers like Nginx, powering users to extend their features.

I will show you some essential but complete examples in how to work with Lua, I will not cover some deep concepts behind the language, installation and other topics like LuaJIT.

Another thing that I will not cover is how to compile and link your app with Lua library, if you know a little about C you can do it with almost no effort using the official manual, the goal here is talking about examples and how to use the API. But if you do not know how to do, check my repository link with examples at the end of this article.

Installation

How I said I do not cover the installation of Lua development libraries, because it varies and depends on your platform.You can look at the installation guide in the official website here.

Some Lua Concepts

It is important you understand at least one concept before, the virtual stack. Lua uses a virtual stack to pass values to and from C.

Lua To Luac Converter

All communication between lua code and your application works using the virtual stack. You push data from C for defining global variables, tables, functions and function arguments. Lua VM will be made all this data available inside Lua script. When a Lua code calls a C function, for example, inside the function you have to recover the arguments and push the result again to Lua.

Another example is when you need to call from C a Lua function. You have to call an API function to let Lua knows which function should be put onto the stack to be available to C call it.

Now you are ready to start coding.

Starting Lua VM

The basic code that we need to call when we use Lua C API is as follow. We start declaring a lua_State pointer and initialize it with luaL_newstate() function.

Note that versions before 5.3 lua_open() is used instead.

Lua C To Lua Converter Online

It is our pointer to our Lua Virtual Machine and this lua_State store all data that we share between Lua and C. We can have many Lua states to run scripts with different contexts.

After opening a state, we are ready to call functions from Lua API.

One important function to be called is luaL_openlibs, it makes available the Lua Standard Library for the code that we will run afterwards. It is not a requirement, but without this you will not be able to call functions from libraries like math, io, string, utf8, inside Lua code.

You can also open only the libraries that you know it will be useful or safe to allow scripts to call, see the example bellow, more information here.

After using the lua state, when you do not need to execute anything else, you have to close the state with:

Initial Examples

I wrote some examples of basic operations like running Lua code from a string, loading a script file, exposing variables and C functions to Lua code, recovering the values from global variables inside the Lua code and calling Lua function in C. Latest clash of clans apk.

Initializing Lua VM

Here is our first example, it is a starting point for using Lua with C.

Let's dissect the code structure. We start adding the headers:

Start a new Lua state:

With L state your now able to call Lua C API.

Open the Lua standard libraries, like math, string, utf8, io, etc.:

After using Lua we need to close the state:

Lua To Lua C Converter