Lua Programming Help Thread

[Creek]

I realize how this would be done in theory, however, don'thave the knowledge to actually program the code.

(How would i do this code-wise?)

[slicer4ever]

I realize how this would be done in theory, however, don'thave the knowledge to actually program the code.

(How would i do this code-wise?)

mousex = mousex-1; //move left

pick up a book, google basic programming logic, u've alot to learn

[Creek]

I think you're misunderstanding me, i understand the mousex = mousex - 1 part. (Funny that you used a C++ comment. ^^) What i don't, however, is how to connect the "mouse" variable to the actual analog.

[dan369]

if pad:analogX() > 99 then
--moving right
end

if pad:analogX() <-99 then
--moving left;
end

That is if you using LP or LPE or LPHM.
Pge would be:
if pge.controls.analogx() > 99 then

if pge.controls.analogx() < -99 then

The range is 128 to -128

[Creek]

My problem is the actual
--moving right
part.

[cmbeke]

heres some example code in lua

cursor = {
x = 0,
y = 0,
img = Image.load("img.png")
}

while true do
pad = controls.read()
if pad:analogX() > 90 then
cursor.x = cursor.x + 1
end
if pad:analogX() < -90 then
cursor.x = cursor.x - 1
end
end

id try working your way through these tutorials linky

[spike_132000]

Ok, I am looking to finally implement the search function in PSPInstaller.

I have a master list of all repo's eg;

srclist[1] = {ho = "MeqSoft" , ha = "The PSPInstaller Default Repository", hd = "http://in.rsparrow.co.uk/MEQSOFT.LUA", hf="MEQSOFT.LUA"}
srclist[2] = {ho = "Repo 1", ha = "REPO 1 Description", hd="http://www.domain.co.uk/REPO.LUA", hf="REPO1.LUA"}
srclist[3] = {ho = "Repo 2", ha = "REPO 2 Description", hd="http://www.domain.co.uk/REPO.LUA", hf="REPO2.LUA"}

and each repo contains the following (with there own files ofc) :

last_update=1262908073
directory_to_repo="http://repoprep.pspinstaller.lan/download.php?file="
gl[1]={i=8,n="Dummy Game 2",d="This is a dummy Game",f="Game2.zip"}
gl[2]={i=9,n="Dummy Game 3",d="This is a dummy Game",f="Game3.zip"}
gl[3]={i=10,n="Dummy Game 4",d="This is a dummy Game",f="Game4.zip"}
gl[4]={i=11,n="Dummy Game 5",d="This is a dummy Game",f="Game5.zip"}
al[1]={i=12,n="Dummy App 2",d="This is a dummy App",f="App2.zip"}
al[2]={i=13,n="Dummy App 3",d="This is a dummy App",f="App3.zip"}
al[3]={i=14,n="Dummy App 4",d="This is a dummy App",f="App4.zip"}
al[4]={i=15,n="Dummy App 5",d="This is a dummy App",f="App5.zip"}
al[5]={i=1,n="Dummy Application",d="This is a dummy app.",f="app.zip"}
tl[1]={i=4,n="Dummy Theme 2",d="This is a dummy theme",f="theme2.zip"}
tl[2]={i=5,n="Dummy Theme 3",d="This is a dummy theme",f="theme3.zip"}
tl[3]={i=6,n="Dummy Theme 4",d="This is a dummy theme",f="theme4.zip"}
tl[4]={i=7,n="Dummy Theme 5",d="This is a dummy theme",f="theme5.zip"}
tl[5]={i=3,n="Dummy Theme",d="This is a dummy theme",f="theme.zip"}
ol[1]={i=16,n="Dummy Other 2",d="This is a dummy Other",f="Other2.zip"}
ol[2]={i=17,n="Dummy Other 3",d="This is a dummy Other",f="Other3.zip"}
ol[3]={i=18,n="Dummy Other 4",d="This is a dummy Other",f="Other4.zip"}
ol[4]={i=19,n="Dummy Other 5",d="This is a dummy Other",f="Other5.zip"}
ol[5]={i=2,n="Dummy Other",d="This is a dummy file for other.",f="other.zip"}

using the srclist.hf[ x ] in a loop, how would I find all the diffrent tables with a certain search keyword in it?

something like (PSEUDO CODE) (Sorry for incorrect spelling of Pseudo :P)

for k,1 to #srclist do
 open srclist.hf[k] as reading
   for g,1 to #gl do
    search string
    insert into new table all found results
   end
   for a,1 to #al do
    search string
    insert into new table all found results
   end
   for t,1 to #tl do
    search string
    insert into new table all found results
   end
   for o,1 to #ol do
    search string
    insert into new table all found results
   end
 close.file
end

Something like that... help?!

[spike_132000]

ok, I have :

	if state == 3 then
		img_sear:activate()
		img_sear:draweasy(0,0)
		arial:activate()
		arial:print(120,55,white,"Please press (X) to start a search")
		searchstr=""
		if not pge.utils.oskinit("Enter Search String", "") then
			error("Error on osk init.")
		end

		
		while pge.running() do
			pge.gfx.enddrawing()
			pge.gfx.swapbuffers()
			pge.controls.update()
			pge.gfx.startdrawing()
			img_sear:activate()
			img_sear:draweasy(0,0)
			pge.gfx.enddrawing()
			result, searchstr = pge.utils.oskupdate()
			if result then
				state = 31
				break
			end
			pge.gfx.swapbuffers()
			pge.gfx.startdrawing()
		end
		if pge.controls.pressed(PGE_CTRL_LTRIGGER) then
			state=2
		end
		if pge.controls.pressed(PGE_CTRL_RTRIGGER) then
			state=4
		end
	end

	if state == 31 then
		sr = {}
		q=1
		while srclist[scan] do
			dofile(srclist[scan].hf)
			sglm = #gl
			for sg,1 to sglm then
				sgn = gl.n[sg]
				sgd = gl.d[sg]
				sgf = gl.f[sg]
				sgi = gl.i[sg]
				if string.find(sgn, searchstr) or string.find(sgd, searchstr) or string.find(sgf,searchstr) then
					sr[q] = { i = sgi, n = sgn, d = sgd, f = sgf, l = srclist[scan].hf, h=srclist[scan].ho }
					q = q + 1
				else
				end
			end
			salm = #al
			for sa,1 to salm then
				san = al.n[sa]
				sad = al.d[sa]
				saf = al.f[sa]
				sai = al.i[sa]
				if string.find(san, searchstr) or string.find(sad, searchstr) or string.find(saf,searchstr) then
					sr[q] = { i = sai, n = san, d = sad, f = saf, l = srclist[scan].hf, h=srclist[scan].ho }
					q = q + 1
				else
				end
			end
			stlm = #tl
			for st,1 to stlm then
				stn = tl.n[st]
				std = tl.d[st]
	stf = tl.f[st]
				sti = tl.i[st]
				if string.find(stn, searchstr) or string.find(std, searchstr) or string.find(stf,searchstr) then
					sr[q] = { i = sti, n = stn, d = std, f = stf, l = srclist[scan].hf, h=srclist[scan].ho }
					q = q + 1
				else
				end
			end
			solm = #ol
			for so,1 to solm then
				son = ol.n[so]
				sod = ol.d[so]
				sof = ol.f[so]
				soi = ol.i[so]
				if string.find(son, searchstr) or string.find(sod, searchstr) or string.find(sof,searchstr) then
					sr[q] = { i = soi, n = son, d = sod, f = sof, l = srclist[scan].hf, h=srclist[scan].ho }
					q = q + 1
				else
				end
			end


		end
		if #sr then
			state = 32
		else
			state = 33
		end
	end

But I keep getting an error on line 970:

'<name>' expected near '1'

line 970 is offset from the rest but just to make clear line 970 is :

stf = tl.f[st]

[thatoneguy559]

i need help with making a truncated number in LPHMv2

here's my code for it:

freespace1 = System.getFreeSpace("ms0:/")/1024^2
freespace2 = string.format("%.2f", freespace1)
totalspace1 = System.getTotalSize("ms0:/")/1024^2
totalspace2 = string.format("%.2f", totalspace1)

screen.startDraw()
screen.clear(0)
Image.blit(0, 0, bg)
Font.print(Arial, 295, 120, "" .. freespace2 .. " MB/" .. totalspace2 .. " MB", black)
screen.endDraw()
screen.flipscreen()

Everything shows and it's truncated with into hundredths the way i want it but the problem is that the number that appears is 0.00 MB/0.00 MB even though it's supposed to be the spaces on the memory stick.
please help.

[SG57]

thatoneguy - Try printing System.getFreeSpace("ms0:/") and System.getTotalSize("ms0:/") as a test to see if they are returning > 0 values. Odds are its another dodgey LPHM function that doesn't work properly.

[thatoneguy559]

sg57 - it does work, i made sure of that before i posted the code. it's probably just another function that doesn't work like its supposed to.

[ponlork]

Hello I'm brand new to programming. I'm trying to develop a way simulate the Multi-Tap key press style found in many cellphones where you can input text by pressing the numpad multiple times. Instead I want to map the letters onto the PSP pad.

As I said I'm still very new to programming, I'm just following a lot of tutorials online. So sorry if my code is really sloppy or nonsensical:

white = Color.new(255,255,255)
red = Color.new(255,0,0) 

characters = { "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", " " } 
crap = { "x", "y", "z", "v", "w", "x", "y", "z", " " }


selector = Image.createEmpty(10,10)
selector:clear(red) 

charX = 100
charY= 100 

currentX = 107
currentY = 98 

currentLetter = 1 


uppercase = false
name = ""
oldpad = Controls.read() 

addX = 0
addY = -10
addRow = -9 

function drawLetters()
for a = 1, 3 do
addX = 0
addY = addY + 10
addRow = addRow + 9
for b = 1, 9 do
addX = addX + 10
if uppercase == false then
screen:print(charX + addX,charY + addY, characters[b + addRow],white)
else
screen:print(charX + addX,charY + addY,string.upper(characters[b + addRow]),white)
end
end
end
addX = 0
addY = -10
addRow = -9
end 

while true do
pad = Controls.read()

screen:clear()

screen:print(10,10,"Enter Name: "..name,white)
screen:blit(currentX,currentY, selector)

drawLetters() 


if pad:cross() and oldpad:cross() ~= pad:cross() then
if uppercase == false then
name = string.sub(name, 1, string.len(name) - 1)
name = name .. characters[currentLetter]
currentLetter = currentLetter + 1
currentX = 107
if currentLetter == 4 then
currentLetter = currentLetter - 3

end
end 
end





if pad:right() and oldpad:right() ~= pad:right() then
if uppercase == false then

name = name .. crap[currentLetter]

end
end 






screen.flip()
screen.waitVblankStart()
oldpad = pad
end

[SG57]

ponlork - And what's your problem exactly? I don't think many of us willing to help are willing to DL luaplayer and run that script (and I for one won't even read through it without indentation)

mousex

hawt.

[slicer4ever]

hawt.

indeed

[ponlork]

ponlork - And what's your problem exactly? I don't think many of us willing to help are willing to DL luaplayer and run that script (and I for one won't even read through it without indentation)


hawt.

Hello, my apologies for the previous post I was still getting my feet wet in lua. Well I spent the other night tinkering around some more and have a better understanding. So I made a new script to try to explain what I'm trying to achieve better:

blue = Color.new(0, 0, 255) 
pink = Color.new(255, 0 , 153)
abc = { "a", "b", "c" } -- I want the X button to display letters "ABC"
def = { "d", "e", "f" } -- I want the Triangle button to display letters "DEF"

oldpad = pad
name = ""
currentLetter = 1

while true do
pad = Controls.read()

screen:clear()
screen:print(100,100,""..name,pink)

if pad:cross() and oldpad:cross() ~=pad:cross() 
then name = string.sub(name, 1, string.len(name) - 1)
name = name .. abc[currentLetter]
currentLetter = currentLetter + 1
if currentLetter == 4 then currentLetter = currentLetter - 3
end
end

if pad:triangle() and oldpad:triangle() ~=pad:triangle() then 
name = name .. def[currentLetter]
currentLetter = currentLetter + 1
if currentLetter == 4 then currentLetter = currentLetter - 3
end
end



screen.flip()
screen.waitVblankStart()
oldpad = pad
end

Now for the section in the code where I press pad:cross(), I used the code "name = string.sub(name, 1, string.len(name) - 1)" in order for the text entry to stay stationary. Then I add "name = name .. abc[currentLetter]" and "currentLetter = currentLetter + 1" so when I tap X it should alternate between ABC. Finally I included "if currentLetter == 4 then currentLetter = currentLetter - 3" so it would go back to A once it goes beyond letter C.

Now how would I make it so when I press triangle, that the letters def would show up in the same effect, and if I press X it will go back to ABC. It seems when I tap X again it will just erase my previous entry from def & start on the letter according to what value the currentLetter is at. Also I would like the currentLetter to start back at 1 whenever I press a new button so it can goto the first string of the letter.

I'm trying to make it so it can emulate the style of a multiTap keyboard found in cell phones. Can anybody give me some advice?

[dan369]

Interesting, i see what your trying to do.
You want a menu system to move through your sets of characters though there's another issue. Your character sets should be in one table as elements rather than individual tables like you have now.
i.e

characterSets = {}
characterSets[1] = {"a", "b", "c"};
characterSets[2] = {"d", "e", "f"};

Instead of what you have:

abc = {"a", "b", "c"};
def = {"d", "e", "f"};

Two reasons, one it's generally bad and two not enough buttons to go through your system and even if there is (i haven't counted cba, probably not though) you won't have any room for your planned features i see, i.e uppercase, numbers etc.
Every time you'd move your set would move via a variable so for example:
pseudo:

if right then
    characterSet[currentSet] = ++;
elseif left and currentSet > 1 then 
    characterSet[currentSet] = --;
end

Then instead of:

name = name .. abc[currentLetter]

It would be:

name = name ..  characterSet[currentSet][currentLetter]

Here your just reference a table within a table, so if your currentSet is 1 and so is your currentLetter then you'd render A and the rest is etc.

[ponlork]

ah I see, thanks for the tip dan369. Good to know in the future. Well I tried implementing your code but it seems to produce the same result. How about this, is there a way where to have a letter print according to how many button presses? For instance, 1 press for letter A, double press for letter B, and three presses for letter C?

I'm really just trying to make a simple OSK with the letters mapped onto the PSP buttons. Numbers and Caps I probably won't be using as I'm trying to make a trivia game where the users have to input text

[slicer4ever]

u need 2 serperate counters, for 2 seperate tables, otherwise using the same counter for both well point to the wrong letter in the other table

[ponlork]

u need 2 serperate counters, for 2 seperate tables, otherwise using the same counter for both well point to the wrong letter in the other table

Oh yes thank you for pointing that out, I realized that earlier so I added another counter for the table DEF and named it currentLetter2. So that part is solved, but now I have a problem with the counter not returning back to 1 after I press a different button. Like if I press X for letter A, then triangle for letter D, if I hit X again the counter will still add + 1 and print letter B instead of reverting back to A. If anybody can help me on that I'll be very thankful

[slicer4ever]

when u hit triangle, simple reset currentletter back to it's starting value, same for currentletter2 when u hit x

[ponlork]

when u hit triangle, simple reset currentletter back to it's starting value, same for currentletter2 when u hit x

OMG something so simple and I missed it haha. Ok I almost got it, now one final problem is the code "name = string.sub(name, 1, string.len(name) - 1)". When I put that line of code in for the Triangle button, The letters DEF also stays stationary in the same position with ABC. Is there a way to have the letters DEF move over to the next when I press the triangle button?

Hey man I really appreciate your help

[ponlork]

Woo Hoo! I finally figured out a way to achieve the effect I was aiming for. I know the code is tedious but **** I'm just glad it works
here's the code I used:

white = Color.new(255, 255, 255) 
blue = Color.new(100, 149, 237)
pink = Color.new(255, 0 , 153)
abc = { "a", "b", "c", "a" }
def = { "d", "e", "f", "d" }
space = { "" }

oldpad = pad
name = ""
currentLetter = 1
currentLetter2 = 1


while true do
pad = Controls.read()

screen:clear()
screen:print(130,56,"Type dead & press Start",white)
screen:print(200,86,""..name,blue)

if pad:right() and oldpad:right() ~=pad:right() and currentLetter ~= 7
then name = name .. abc[1]
currentLetter = currentLetter + 1
currentLetter2 = 1
end


if pad:right() and oldpad:right() ~=pad:right() and currentLetter == 3
then name = string.sub(name, 1, string.len(name) - 2)
name = name .. abc[2]
currentLetter = currentLetter + 1
currentLetter2 = 1
end


if pad:right() and oldpad:right() ~=pad:right() and currentLetter == 5
then name = string.sub(name, 1, string.len(name) - 2)
name = name .. abc[3]
currentLetter = currentLetter + 1
currentLetter2 = 1
end


if pad:right() and oldpad:right() ~=pad:right() and currentLetter == 7
then name = string.sub(name, 1, string.len(name) - 2)
name = name .. abc[4]
currentLetter = currentLetter - 5
currentLetter2 = 1
end


if pad:left() and oldpad:left() ~=pad:left() and currentLetter2 ~= 7
then name = name .. def[1]
currentLetter2 = currentLetter2 + 1
currentLetter = 1
end

if pad:left() and oldpad:left() ~=pad:left() and currentLetter2 == 3
then name = string.sub(name, 1, string.len(name) - 2)
name = name .. def[2]
currentLetter2 = currentLetter2 + 1
currentLetter = 1
end



if pad:left() and oldpad:left() ~=pad:left() and currentLetter2 == 5
then name = string.sub(name, 1, string.len(name) - 2)
name = name .. def[3]
currentLetter2 = currentLetter2 + 1
currentLetter = 1
end


if pad:left() and oldpad:left() ~=pad:left() and currentLetter2 == 7
then name = string.sub(name, 1, string.len(name) - 2)
name = name .. def[4]
currentLetter2 = currentLetter2 - 5
currentLetter = 1
end


if pad:r() and oldpad:r() ~=pad:r() 
then name = name .. space[1]
currentLetter = 1
currentLetter2 = 1
end



if pad:start() and oldpad:start() ~=pad:start()
then
currentLetter = 1
currentLetter2 = 1
if name == "dead" then screen:print(180,110,"Correct!",pink)
screen.flip()
screen.waitVblankStart(200)
else screen:print(180,110,"WRONG!",pink)
screen.flip()
name = ""
screen.waitVblankStart(50)
end
end


screen.flip()
screen.waitVblankStart()
oldpad = pad
end

I don't need my High School Diploma Anymore! time to get cracking on my game. I'll probably be back again

[_df_]

if pad:right() and oldpad:right() ~=pad:right() and currentLetter ~= 7
then name = name .. abc[1]
currentLetter = currentLetter + 1
currentLetter2 = 1
end


if pad:right() and oldpad:right() ~=pad:right() and currentLetter == 3
then name = string.sub(name, 1, string.len(name) - 2)
name = name .. abc[2]
currentLetter = currentLetter + 1
currentLetter2 = 1
end


if pad:right() and oldpad:right() ~=pad:right() and currentLetter == 5
then name = string.sub(name, 1, string.len(name) - 2)
name = name .. abc[3]
currentLetter = currentLetter + 1
currentLetter2 = 1
end


if pad:right() and oldpad:right() ~=pad:right() and currentLetter == 7
then name = string.sub(name, 1, string.len(name) - 2)
name = name .. abc[4]
currentLetter = currentLetter - 5
currentLetter2 = 1
end


if pad:left() and oldpad:left() ~=pad:left() and currentLetter2 ~= 7
then name = name .. def[1]
currentLetter2 = currentLetter2 + 1
currentLetter = 1
end

if pad:left() and oldpad:left() ~=pad:left() and currentLetter2 == 3
then name = string.sub(name, 1, string.len(name) - 2)
name = name .. def[2]
currentLetter2 = currentLetter2 + 1
currentLetter = 1
end



if pad:left() and oldpad:left() ~=pad:left() and currentLetter2 == 5
then name = string.sub(name, 1, string.len(name) - 2)
name = name .. def[3]
currentLetter2 = currentLetter2 + 1
currentLetter = 1
end


if pad:left() and oldpad:left() ~=pad:left() and currentLetter2 == 7
then name = string.sub(name, 1, string.len(name) - 2)
name = name .. def[4]
currentLetter2 = currentLetter2 - 5
currentLetter = 1
end

Look at this from 10 feet from your screen. All this code is identical except for some very minor things... Make it functional or think how you can reduce it to just one function or two. It has a pattern/smell and they can be optmised out

[ponlork]

Look at this from 10 feet from your screen. All this code is identical except for some very minor things... Make it functional or think how you can reduce it to just one function or two. It has a pattern/smell and they can be optmised out

I tried my best with the limited knowledge I have, but since no one was willing to help me or had an answer I said screw it, I'll do it. Sometimes it's not about how long the code is but if you can understand it. And by golly I do understand it even though I'm still a noob.

Down the line when I improve I will optimize it though. But hey if you got a suggestion or a better method then I'll gladly utilize it but I'm not spending anymore time on it. No offense but It's easy to come after the fact and say you can do better but where were you the past 5 days when I was pleading for help? haha I say that with no disrespect, right now I'm just glad it works so....moving on, I got a project to Finnish. can't sit around experimenting all day, I got a full time job also. Time is everything. Thanks for the advice though, you are right, I'm doing too much. Fall back, fall back

[slicer4ever]

I tried my best with the limited knowledge I have, but since no one was willing to help me or had an answer I said screw it, I'll do it. Sometimes it's not about how long the code is but if you can understand it. And by golly I do understand it even though I'm still a noob.

Down the line when I improve I will optimize it though. But hey if you got a suggestion or a better method then I'll gladly utilize it but I'm not spending anymore time on it. No offense but It's easy to come after the fact and say you can do better but where were you the past 5 days when I was pleading for help? haha I say that with no disrespect, right now I'm just glad it works so....moving on, I got a project to Finnish. can't sit around experimenting all day, I got a full time job also. Time is everything. Thanks for the advice though, you are right, I'm doing too much. Fall back, fall back

what are you talking about?, 2 others including myself took time to answer most every question you asked here, it's funny how you complain about having a job and can't sit around then complain to someone whom most likly has a job and things to do then visit this forum everyday and answer your questions, _df_ simply pointed out that it could be optimized not that you had to optimize it

attitude like this makes me want to not help you in the future, claiming you got no help, that's pretty disrespectful to everyone that helped you

[ponlork]

what are you talking about?, 2 others including myself took time to answer most every question you asked here, it's funny how you complain about having a job and can't sit around then complain to someone whom most likly has a job and things to do then visit this forum everyday and answer your questions, _df_ simply pointed out that it could be optimized not that you had to optimize it

attitude like this makes me want to not help you in the future, claiming you got no help, that's pretty disrespectful to everyone that helped you

Hey look I'm sorry alright? I'm just BSing. Maybe I'll shout ya'll out in my first release this weekend (hopefully). I do appreciate your guys help even though I may come across as a dicc

Edit: Snarky response

[ponlork]

Man I was in the process of posting a new thread for my release but I got a message saying my post count was insufficient by just 1 haha I hate to post just for the sake of getting 10 but hey let me describe my game, it's called Learn Japanese. Basically it's a trivia game designed to help people memorize Japanese words. I feel typing the words will help people remember better.

It was a great learning experience, I feel more confident at tackling bigger projects now. I just want to say thanks to everybody for helping me out.

-- I can't Post Links or Pictures Either?! oh well after this post I should be able to...

[Ozone]

please go look at my post i need help bad

[batanen]

Hi!

I started programming Lua with Euphoria V8, but there is one thing with file reading I cannot get to work or it's a bug with Euphoria. Here is some code:

Spoiler for code:

-- Program starts

stringArray = {};

i = 1;

file = io.open("myfile.ini", "r");

for line in file:lines() do

stringArray[i] = line; -- for example stores: folder/a.txt and folder/b.txt. These files exist! Are there some problems with format?

i = i + 1;

end

file:close();



file2 = io.open(stringArray[1], "r") -- try to open the file. Note: If I simply write io.open("folder/a.txt", "r") this works. So is the file looked from a wrong folder for some reason? I made further testing and if I use that array, tostring(file2) is nil. Then again if I prnt (stringArray[1], I get folder/a.txt. I don't understand...



-- Then we want to read the file

for line in file2:lines() do -- Then I get this error: "Attemp to index global 'file2' (a nil value)

 -- do something

end

Am I doing something wrong? I am pretty sure this works with normal Lua.

[cmbeke]

thats weird, just tried it and it worked for me:

stringArray = {};
i = 1;
file = io.open("myfile.ini", "r");
for line in file:lines() do
stringArray[i] = line;
i = i + 1;
end
file:close();
file2 = io.open(stringArray[1], "r")
for line in file2:lines() do -- Then I get this error: "Attemp to index global 'file2' (a nil value)
var = line
end
while true do
	screen:print(0,0,"var: "..var,Color.new(255,255,255))
	if Controls.read():start() then
		System.quit()
	end
	screen:flip()
end

it displays the text that i put in my folder/a.txt, and i dont get any errors at all

EDIT

for some reason its adding a ♪ to the end of the line...

EDIT2
firgured out how to remove the ♪ from the line, just replace the stuff you have in the for loop with this:

stringArray[i] = line:gsub(string.char(13),"")

the gsub() will look for ♪ (known as string.char(13) by the psp) and replace it with nothing. If you want to know how i figured that out just replace the string.char(13) with "folder/a.txt". That way you all that is left is the ♪, then use string.byte(stringArray[1]) in a print function to show the byte value of the ♪. Then using the gsub function again replace "folder/a.txt" with string.char(value). The string.char will turn a number into a character, and then you just replace it with nothing