I am using lua to make scripts in my game,
after updating the lua libs version from 5.1 to 5.3, an error appears on the game engine every time I use
math.X in a function
error :
Lua run doFile failed.attempt to index a nil value (global 'math'))
original code :
local value = math.random(1,10)
do you have any solutions ?
Related
I am reading a few tutorials on Lua and am trying to figure out how to use unpack(). I found an example that goes like this:
t = { "the", "quick", "brown" }
print (unpack (t))
The output should be "the quick brown".
What actually happens is this: "stdin:1: attempt to call a nil value (global 'unpack')".
How can I make unpack() work?
My Info:
OS: Mac OS 10.8
Lua: 5.4.2
Since Lua 5.2 unpack function is now at table.unpack
Function unpack was moved into the table library and therefore must be called as table.unpack.
I'm trying to follow a Lua roguelike course to learn the language and by line 17 when I had attempted to run the program to see the title it came up with the error
lua: [string "<eval>"]:1: attempt to index global 'application' (a nil value)
stack traceback:
[string "<eval>"]:1: in main chunk
Here's all the code I've written and the link to the course
application:setOrientation(Application.LANDSCAPE_LEFT
application:setScaleMode("letterbox")
BLACK # 0x1A1A1A
application:setBackgroundColor(BLACK)
local fg = Bitmap.new(Texture.new("images/foreground.png", true))
fg:setX(1201)
stage:addChild(fg)
YELLOW # 0xDAD45E
local title = TextField.new(nil, "The Long Dark")
title:setTextColor(YELLOW)
title:setPosition(1320, 100)
stage:addChild(title)
https://programmingbymoonlight.com/roguelike-part-1-lua-and-gideros-an-introduction/
So I tried gideros and it worked properly, while it depends on lua it has it's own commands native to it's IDE framework.
Hi so I just installed Lua and I have been playing around with it a bit. When I run a program that is supposed to calculate whether an integer is even or odd it throws an error at me.
Program:
function is_even(n)
if bit32.band(n,1) == 0 then
print('Even')
else
print('Odd')
end
end
This is the error that I receive:
stdin:2: attempt to index a nil value (global 'bit32')
stack traceback:
stdin:2: in function 'is_even'
(...tail calls...)
[C]: in ?
What am i doing wrong here? This program is supposed to work on Lua 5.2+ I currently have Lua 5.3.3 installed.
The bit32 library was deleted from Lua 5.3, because it now supports bitwise operators.
When I run a simple piece of code a = torch.Tensor(5,3) in ZeroBraneStudio, I receive the following error:
attempt to index global 'torch' (a nil value)
Does this mean that ZeroBraneStudio does not recognize Torch?
Make sure you select Torch as the interpreter (Project | Lua Interpreter | Torch-7) and configure the path to your th or luajit executable from torch (as described in this post).
this is old code (Lua 5.1)
if (self.wiggleMode == self.LAYER_MODE) then
if (self.wiggleChannel == self.TRANS_MODE) then
LM_TranslateLayer:DrawMe(moho, view)
i have try change to lua 5.3 but error on:
LM_TranslateLayer:DrawMe(moho, view)
error: attempt to index global 'LM_TranslateLayer' (a nil value)
My guess is that LM_TranslateLayer comes from an external library that is loaded via require. Make sure that this library does define global symbols.
In Lua 5.1, require automatically defined a global table to hold the module's content. So, require"foo" definedfoo`.
In Lua 5.2 this changed and the idiom is now local foo = require"foo".
Check how the library that defines LM_TranslateLayer is loaded.