Lua Programming Help Thread

[TeamOverload]

I am just asking if there is a "return" command that really works, i know everything else.

I am asking for commands, not code.

Well you could have made that clear

[HaxxBlaster]

I pretty much did, because there is no other way to do the "skipp" stuff that i want.

Dosen't any one know how the "return" commands works?

[HaxxBlaster]

I got this "Loop In Gettable" problem as well, and i can't find anything thats wrong with the script.
I have tryed "Do wile true" and it dosen't work.

I also hav etryed to take away parts to see if it work, but nothing fhcking work!

---- FILETYPE CHOOSER
FTime:start()

if pad:l() and filetype == ".png" and FTime:timer() >= 400 then
FTime:reset()
filetype = ".jpg"
screen.waitVblankStart(ControlWait)
end

if pad:l() and filetype == ".jpg" and FTime:timer() >= 400 then
FTime:reset()
filetype = ".png"
screen.waitVblankStart(ControlWait)
end

---- PAD:R() SHOW LAST SAVE

if pad:r() and ShowLastSave == false and FTime:timer() >= 500 then
while true do
ShowLastSave = true
FTime:reset()
end
end

if pad:r() and ShowLastSave == true and FTime:timer() >= 500 then
ShowLastSave = false
FTime:reset()
end

Yes, same error with both button hits.

[Musik13]

here is the code thats make 2 buttons to one fuction

if pad:cross() and
square() then
break
end
[I]end[I/]

[HaxxBlaster]

Hehe, yes i know. But read my code before posting.

[montrob]

not really a lua question.. but how do you make an image transparent.. and can you do it in MS paint?

[Vaza]

Hey TO, search in google for "Lumo PSP" i think he has a sidescrolling example code.

not really a lua question.. but how do you make an image transparent.. and can you do it in MS paint?

No, use something like Photoshop, or the Gimp.
When u rub something out in these programs the BG shows(grey and white squares), that shows that it is transparent.

[TeamOverload]

Hey TO, search in google for "Lumo PSP" i think he has a sidescrolling example code.



No, use something like Photoshop, or the Gimp.
When u rub something out in these programs the BG shows(grey and white squares), that shows that it is transparent.

Alright thanks a lot

[Altair]

TO, you can also use the "music" example in the "Applications" folder in LUA-player itself. It has a scrolling background. Also I use a very simple way of scrolling, well i think so anyway, but im not sure if thats the same. It'll probably come down to the same.

[ZereoX]

I have a little Problem:
Money = 300
Bet = 0

if pad:right() and oldpad:right() ~= pad:right() then
Bet = Bet + 10
end

if pad:left() and oldpad:left() ~= pad:left() then
Bet = Bet - 10
end

if Bet < 0 then
Bet = 0
end

if Bet > Money then
Bet = Money
end

function pointsCalculate()
if Points == Dealerpoints then
screen:blit(0,0,lose) Money =- Bet

elseif Points > Dealerpoints then
screen:blit(0,0,win) Money =+ Bet

elseif Points == 11 and Dealerpoints < Loser  then
screen:blit(0,0,win) Money =+ Bet

elseif Points == Winner and Dealerpoints < Winner then
screen:blit(0,0,win) Money =+ Bet

elseif Dealerpoints == 11 then
screen:blit(0,0,lose) Money =- Bet

elseif Dealerpoints == Winner and Points < Winner then
screen:blit(0,0,lose) Money =- Bet

elseif Dealerpoints > Points then
screen:blit(0,0,lose) Money =- Bet

end
end

when i lose the money cause down up to zero how can i do so that it goes down only onece.Same thing when i win but it goes up.

[SG57]

Umm... your grammar i cannot understand very well, but you an always use a bool:

yourBOOLnameHERE = false
while true do
if Dealerpoints > Points then
screen:blit(0,0,lose) Money =- Bet
yourBOOLnameHERE=true
end
if yourBOOLnameHERE==true then
     Money-=1
     screen.waitVblankStart(60)
end

This will steadilydecrease your Money integer by 1 every second as long as the Dealer has more points then you. Hope this helps.

[Electro]

how would you read the second(or 3rd or 4th or whatever) line in another txt file
i want each line to be a seperate table
ie
line 1 -> t = {}
line 2 -> z = {}
line 3 -> g = {}
and so on

[montrob]

how would you read the second(or 3rd or 4th or whatever) line in another txt file
i want each line to be a seperate table
ie
line 1 -> t = {}
line 2 -> z = {}
line 3 -> g = {}
and so on

Do this, because everytime you read the same file, it reads the next line down.. i think.

I dont know if this works.. as i havent tested it yet.

file = io.open("yourfile.txt", "r")
linea = file:read()
lineb = file:read()
linec = file:read()
file:close()
line = {}
line[1] = {"linea"}
line[2] = {"lineb"}
line[3] = {"linec"}

Ill edit this with more on how to do this and more ways after i get back from school.

[HaxxBlaster]

I got the "Loop in Gettable" error working, but i still need serious help with how the use the "return" command.
I would like to have it like "elseif return false" so it will skipp to load the image or any other file.

Please help me out, this is the last piece to complete my work!

[Glynnder]

montrob, I think that will just read the top line again every time, however, i'm not certain, I will also need to know this for LuaMainframe, I suppose it will be the shell with no cursor lol!

[Altair]

@Sousanator, Montrob and everybody.

io.lines ([filename])
Opens the given file name in read mode and returns an iterator function that, each time it is called, returns a new line from the file. Therefore, the construction

for line in io.lines(filename) do ... end

will iterate over all lines of the file. When the iterator function detects the end of file, it returns nil (to finish the loop) and automatically closes the file.
The call io.lines() (without a file name) is equivalent to io.input():lines(), that is, it iterates over the lines of the default input file.

this is from http://www.lua.org/manual/5.0/manual.html

Damn i cant believe how often i have given this link and that of http://wiki.ps2dev.org/psp:lua_player

Maybe ill just put them in my sig

[MexicanSnake]

Hey Guys How Can I Use The Irda Features In The Lua??

[Electro]

@Sousanator, Montrob and everybody.
this is from http://www.lua.org/manual/5.0/manual.html
Damn i cant believe how often i have given this link and that of http://wiki.ps2dev.org/psp:lua_player

Maybe ill just put them in my sig

so io.lines reads all the lines right??
but i still dont understand how to do get each line as a new varible

[montrob]

Ok i need help on tilesets.. For my game AlphaAttack.. I am going to need buildings. I am trying to blit buildings with just one tile.. but going over and over again to form a pretty big structure. Is there anyway i can do this besides just blitting the same image with a diff. X and Y value everytime.

[Frenchb0ygenius]

I might sound like a n00b saying this, but how do you write lua code???

[TPTaylor]

Look at past examples of programs, go to the tutorials which psp millionaire wrote. Evil mana i think they're called.
You write it in a text program like notepad, or you can use other programs which give you a bit more help like notepad++ .
That should get you started.

[Altair]

so io.lines reads all the lines right??
but i still dont understand how to do get each line as a new varible

No. If you read it better, it says that everytime you use io.lines it reads the next line. Thats why they use a for loop in the example to read all the lines one at a time. That s exactly what you want.

So you could do this:

n=1
for lines in io.lines(filename) do
line[n]=lines
n=n+1
end

[EminentJonFrost]

Is there a Lua-specialized-notepad app? Like the TTLDE in Lua OS?

Edit - I found one, - http://www.luaedit.net/ -, but I'm still looking for one that looks/works more like TTLDE.

[Altair]

I use ConTEXT its also free. You can download all sorts of context highlighters also LUA.

[JoeDaStudd]

hi, can anyone tell me the commands for the following;
to pause the game
to exit the game to luaplayer (on the psp)
Pm me the anwser or reply here thanks

[EminentJonFrost]

hi, can anyone tell me the commands for the following;
to pause the game
to exit the game to luaplayer (on the psp)
Pm me the anwser or reply here thanks

to pause, pretty simple actually. its just a function.

Example:

function pause()

   white = Color.new(255, 255, 255)

      while true do

         screen:clear()

         pad = Controls.read()

         screen:print(x, y, "Press Start to continue", white)

         if pad:start() then
            break
         end

         screen.flip()
         screen.waitVblankStart()
      end
end

To quit back to luaplayer you just make a variable that will be your 'control' of whether or not the game will be 'on'.

Example:

quit = false
[functions]
[game]

--in all your functions and in the main loop, you put:
if quit == true then
break
end

To Altair: Thanks!

[Tritoch]

2 days ago, I had no idea what you were talking about...

now, i understand it all :)

[EminentJonFrost]

2 days ago, I had no idea what you were talking about...

now, i understand it all :)

you mean me?

[JoeDaStudd]

thanks

[Tritoch]

you mean me?

i meant all lua coders... :icon_razz