Lua Programming Help Thread

[dan369]

Simply, put it out of the function?

[PSProgramer]

just a quick question what is the largest image you can load in lua??

[Anti-QuickJay]

512x512 AFAIK

[PSProgramer]

just checking

AFAIK = As Far As I Know?????

and thanks I do appreciate it. . . .

[Anti-QuickJay]

Yea.
As far as i know

[FaT3oYCG]

it actually depends on which lua player you use but the max for the origional lua player is 512 x 512, but you shouldnt load large images if you can help it.

[Nielkie]

No LuaPlayer can load images larger than 512x512.

It's a hardware limitation.

[FaT3oYCG]

LuaPlayerHM CAN load images larger than 512 x 512, it just cant blit them to the screen!

[PSProgramer]

ok, so if 512 by 512 is the larges image you can load, what is the largest image you can create in lua???

[FaT3oYCG]

the same 512 x 512

[PSProgramer]

ok, cool, I fixed it, didn't need images that big anyway, lo lI was just doing it wrong. . . . but thanx for the help.

[lukespalding]

hi all, im wondering if anybody knows how to list a directory and print it to the screen so then i can have a selector on it aswell.
for like loading a game save, i know this might be really simple bu i cannot think 100% right now so i was wondering if ant of you lot wwould know?


luke

[PSProgramer]

EDIT:Nvrmind. . .
oo and luke what exactly are you asking?? how you would save and load a game??

[FaT3oYCG]

EDIT:Nvrmind. . .
oo and luke what exactly are you asking?? how you would save and load a game??

i told you not to use large images but to combat that do this

Tile_Map_Backgound = Image.createEmpty(480, 272)
Tile_Map_Backgound:blit(0,0,tile_1)
Tile_Map_Backgound:blit(0,0,tile_2)

while true do

screen:blit(0,0, Tile_Map_Backgound)

end

[PSProgramer]

well i have a problem cause I need to move the secound layer, buit I'll work with it and see what I can come up with. . . . .

[lukespalding]

EDIT:Nvrmind. . .
oo and luke what exactly are you asking?? how you would save and load a game??

Nonono lol not all that lol Oh god no,i have full saving and loading code which i created myself

what i was asking you was how to list scripts from a folder and print there names to the screen like in lowser it lists all the scripts and then if you press X its loads that script well i need something where it loads all the saved game into like a big menu like lowser and then you select your game via moving to it and press X then it will load it.

do you get me now? maybe? :S
Luke:Argh:

[FaT3oYCG]

go to my site and look at the menu examples in the code section

http://psp-networks.ath.cx/

the main commands you need are

System.currentDirectory()
System.listDirectory()
and
table.getn()

[dan369]

to list everything in a directory

list = System.listDirectory("mso:/")

screen:print(0.10.list, red)

That's who i think u do it.

[FaT3oYCG]

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

list = System.listDirectory()
saves = table.getn(list)

while true do

screen:clear(white)

for i = 3, saves do
     screen:print(10, 30 + ((i - 3) * 10), list[i].name)
end

screen.flip()
screen.waitVblankStart()

end

[TurtlesPwn]

dan, stop saying thats how i think you do it when you really have no clue.

fatboy has it right although I would do table.remove(list,1) 2x to drop the . and .. options if its just for picking a savefile in the directory

[Moose]

dan, stop saying thats how i think you do it when you really have no clue.

Unless you are going to correct him then you may as well not post.

[Anti-QuickJay]

Unless you are going to correct him then you may as well not post.

No need to correct when fatboy did a correction already sorta.

If you look at the latest post of dan you would see he has no idea what he is doing.

[Moose]

No need to correct when fatboy did a correction already sorta.

If you look at the latest post of dan you would see he has no idea what he is doing.

Sure, he's wrong, but if all you are going to do is sit back and tell him he is doing it wrong without any sort of input or correction, then you may as well say nothing. You get me?

EDIT: If fatboy had already posted the correct way to go about whatever they were trying to do, that's even more of a reason not to post.

[Anti-QuickJay]

Turtles post also gives a tip to fatboy's method.

Plus dan needs to know he should stop posting help when he doesnt know what hes doing.
Noobs helping noobs isn't good.

EDIT:
look at this example
[WIP] Arkanoid Deluxe
then
[WIP] Arkanoid Deluxe

He doesn't know what he is doing.

[Moose]

Turtles post also gives a tip to fatboy's method.

Plus dan needs to know he should stop posting help when he doesnt know what hes doing.
Noobs helping noobs isn't good.

Well as you can see, he had edited his post just after I posted.

No furthur discussion is needed. If Dan doesn't know what he is doing, then correct him (and in doing so you will be helping him), otherwise don't post.

[TurtlesPwn]

Sorry, I forgot it was a web form not a normal text editor and hit tab-enter to go to a new line with the previous indented to write the little code example and it submitted. I edited it right after I posted it, probably while you were posting.

[FaT3oYCG]

i was going to let luke work it out for him self but then dan posted some crap so i thought i would correct it. im sure luke wont find it too hard to elaborate on what i have shown him now.

[dan369]

You guys Need to Chill out, 1 post!! Seriously.
I knew it was most promblem wrong.
And those posts were kinda stupid. I admit that. Though How Many Times Do i Rotate text, ummmh 0.I didn't get it at first but know i kinda do.

 
System.currentDirectory("mso:/")
list = System.listDirectory()
files = table.getn(list)

Would that be right.
P.s just to get the list of mso:/? Not print!! Also just to explain (because people think i don't know what i'm doing!)
table.getn(list) --- gets the size of the array (list)
System.currentDirectory ("mso:/") --sets the current working directory
System.listDirectory() --list the current directory

[TurtlesPwn]

"I knew it was most promblem wrong"

Then why did you post it trying to help someone who didn't know either?

Anyways
You don't have to set your current working directory to get the list of that folder, you can just do
theFiles = System.listDirectory("ms0 :/")
and then
numberOfFilesInTheRootMSF older = table.getn(theFiles)
if you have PSP, ISO, MUSIC, and VIDEO folders in the root of your ms, the table would look like this:
theFiles = {
{name="PSP",size=?,direct ory=true},
{name="ISO",size=?,direct ory=true},
{name="MUSIC",size=?,dire ctory=true},
{name="VIDEO",size=?,dire ctory=true}}
? because I don't remember what it fills in for the size of a folder, but I believe it is 0

[dan369]

Ok thanks, would it just get folders?Or other files? e.g a txt file or .zip?
Well i posted because my first thought was what i typed, thinking about it a second time i knew that it wouldn't have worked.I should of EDITED it.