lua c scripts

1. Use of functions The following program demonstrates how to use functions and local variables in Lua. Example e02.lua 　　-- functions　　function pythagorean(a, b)　　local c2 = a^2 + b^2　　return sqrt(c2)　　end　　print(pythagorean(3,4)) Running result 5 Program description In Lua, The Function Definition Format is: Function Name (parameter) ... End Unlike Pascal, en

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Imagine a scenario where your C program needs to have a window where you want the user to be able to customize the window size. Many methods, such as using environment variables, or key-value pairs of files. Anyway, you need to parse it. Using LUA configuration files is a good choice. First, you can define the following configuration file:--define window sizewidth = 100Height = 50We then write a function to parse it and use the

Cocos2d-x lua game development-install Lua to mac system Note: mac ox, lua version: 5.15 Download lua, Note: it is better to be less than 5.15. lua of 5.2 does not support the getn () method of table, which makes me feel inferior. (Get the table length, equivalent to cout

LUA interacts with C by lua_state this stack.1.....lua stack index upward growth such as: 1 2 3 4 5 62.....lua Stack index is the following index to the bottom is 3 2 1 0-1-2-3, the stack corresponds to a value of 1 2 3 x 1 2 3 3......lua functions multiple return values if the function above returns 3 return values, t

As a summary of the basic part of Lua, This article demonstrates two small programs to demonstrate different features of Lua. The first example shows how Lua is used as a descriptive language. The first example is the implementation of a Markov Chain Algorithm. PS: I personally think this chapter in the book is a bit confusing. I feel that the two examples have n

Lua sorting-table database and lua sorting tableTable attributes Table library is composed of some auxiliary functions.The function uses table as an array.. There are functions for inserting and deleting elements in the list, functions for sorting array elements, and functions for linking all strings in an array. 0. In table. getn () Lua, we often assume that

Compile iconv into lua interface, and iconv compile lua The previous blog post explains how to use iconv transcoding in cocos2dx. In this section, we will use the transcoding function written in the previous section to create a lua interface and use it in the lua script. You can download luaconv from the Internet, but

C code: # Include "windows. H " Lua code: Local B ={}

Odustggg Personal Original, welcome to reprint, reprint please indicate the source, http://blog.csdn.net/odustggg/article/details/8175059We have used the hellolua project in the cocos2d_x engine for testing. Drag the hello. Lua file to decoda, select debug from the top menu, and set the project that will pop up. Commander select the hellolua.exe File Select the project resource path and confirm the working options. You can set a breakpoint t

Lua-table Library 1, inserting table.insert ()--If no location is set, the default last position Example: myTable = { 1, 2, 3 } Mytable.insert (mytable,1,10) for k,v in pairs (myTable) do print (k, v) end 2, removing functions Table.remove (Table,pos) tabel.remove ()--Default Delete last 3 sort function table.sort (tablename,sortfunction) Default from large to small local function my_sort (x, y) if x > y then return true else retu

I have studied lua over the past few days. I mainly focus on the integration between lua and vc and write the code in the VC Host Program, then, call the code of the Host Program in lua (or interface or component, whatever you call it), hoping to use the script to control the behavior of the main program. This is actually an architecture that separates businesses

When Lua calls the C function, it uses the same type of stack as C to invoke Lua to interact with.The C function gets her number of references from the stack. The return result is placed on the stack when the call ends. To differentiate between the returned results and other values in the stack, each C function returns the number of results (the function returns (in C) of the results it was leaving on the s

Moonwarriors is a similar lightning fighter game demo that was developed using the COCOS2D-HTML5 engine, and the source code is published in the engine example of the Cocos2d-x website. Moonwarriors-lua is a quick-cocos2d-x version that was migrated to learn cocos2d-x LUA development. During the transplant, we experienced the syntax features of the JavaScript code to the

I don't know how to answer the questions, but it means very simple: If you expose a complex object to Lua and implement similar OO programming, you should expose the destructor to Lua. Otherwise, the garbage collection object will be free when the garbage collection function is not found, which is quite fatal in C ++. The tolua_cclass function in tolua ++ is used to register a

These days to study Lua, the main focus is the integration between Lua and VC, the code is written in the VC host program, and then call the host program in LUA code (or interface, components, whatever you call), I hope to use the script to control the behavior of the main program. This is actually an architecture that separates business from scripting, and some

mir9--"Hot Sand", is a 9-second forum open-source use cocos2d-x-2.2.1 engine developed by the 45-degree ARPG Hand Tour demo, the source code for C + +. Mir9-lua is MIR9 's LUA transplant version, developed using the quick-cocos2d-x-2.2.5 engine. The code may be confusing because of the haste of the transplant, please forgive me.Known Bugs:1. Label font appears blurry on Windows2, the small map in the left o

This article focuses on the string Cache Management in Lua (the file lstring. c involved ). Among the nine Data Types of Lua, the string is a type that can be recycled by GC. In Lua, the Operation string is actually referenced in the Operation string. When the character string is not used, GC will be recycled by some algorithm. -- Lua9 data types: # Define lua_

An array is a collection of elements of the same data type arranged in a certain order, which can be one-dimensional and multidimensional arrays.The index key values of the Lua array can be represented by integers, and the size of the array is not fixed. one-dimensional arrays A one-dimensional array is the simplest array, and its logical structure is a linear table. A one-dimensional array can be used in the for loop to the elements in a group, as fo

There are two broad classes of the For statement in the Lua programming language:: value for loop generic for loop value for loop The value for loop syntax format in the Lua programming language: For Var=exp1,exp2,exp3 do var changes from Exp1 to EXP2, each time it changes to exp3 increments of Var, and executes an "Executive Body". EXP3 is optional and, if not specified, defaults to 1. Instance Fo