Lua Programming Help Thread

[Ben93]

Tnx for the reply, but I found it already in someone else's script and now I'm testing it with a simple recovery.prx flasher (to change colours of recovery menu)

red = Color.new(255, 0, 0)
background = Image.load("RecoveryMenu")
done = false
while true do
pad = Controls.read()
if pad:cross() and done == false then

System.unassign("flash0:")
System.assign("flash0:", "lflash0:0,0", "flashfat0:")
System.copyFile("ms0:/PSP/GAME/Recovery_menu_flasher/recovery.prx","flash0:/vsh/module/recovery.prx",0) 
done = true end
if done == false then

screen:print(200, 130, "Press X to flash your new Recovery Menu", red) else
screen:print(200, 261, "Done! Please shutdown the PSP...!", red)
end

New problem:

if pad:up() and done == false then

System.usbDiskModeActivate()
done = true end
if done == false then

screen:print(100, 110, "Press up to activate USB", red)
end

if pad:down() and done == false then

System.usbDiskModeDeactivate()
done = true end
if done == false then

screen:print(100, 140, "Press down to deactivate USB", red)
end

When I press up to activate USB, usb gets activated, but the 2 last lines on the screen (= the 2 lines you see here) start to flicker and the loop gets stuck, pressing home works, and the script still accepts button input when putting backlight back on, but is has no effect anyfurther

[dan369]

instead of done == true/false you should just have

 
if done then --would be true if 'done' is true.
--OR
if not done then --which would be if 'done' was false.

[Ben93]

tnx, I'll give it a try

[_dysfunctional]

instead of done == true/false you should just have

It's the same thing...

[dan369]

It's the same thing...

I know, it just looks cleaner instead of having '==' everywhere. It also saves a bit of time but not much.

[Anti-QuickJay]

You have to be using the eboot with the flash write/assign functions

[Ben93]

You have to be using the eboot with the flash write/assign functions

I just make one with miro lua, and it works...

[qwikrazor87]

yes you can make two buttons function as one, just do this.

pad = Controls.read()
if pad:cross() and pad:square() then
break
end

[Digikid13]

If you didn't get it by now.

done = false
red = Color.new(255,0,0)

while not done do
  if pad:up() then
    System.usbDiskModeActivate()
    done = true
  end

  if pad:down() then
    System.usbDiskModeDeactivate()
    done = true
  end

  if pad:circle() or pad:triangle() then break end

  screen:print(100,110,"Press up to activate USB.",red)
  screen:print(100,120,"Press down to deactivate USB.",red)
  screen:print(100,130,"Press circle or triangle to exit.",red)
end

[slicer4ever]

If you didn't get it by now.

done = false
red = Color.new(255,0,0)

while not done do
  if pad:up() then
    System.usbDiskModeActivate()
    done = true
  end

  if pad:down() then
    System.usbDiskModeDeactivate()
    done = true
  end

  if pad:circle() or pad:triangle() then break end

  screen:print(100,110,"Press up to activate USB.",red)
  screen:print(100,120,"Press down to deactivate USB.",red)
  screen:print(100,130,"Press circle or triangle to exit.",red)
end

wouldn't that immidiatly end the program once u turn on or off the usb?

[Digikid13]

Your right here this is better.

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

while true do

  screen.clear()
  pad = Controls.read()

  if pad:up() then
    System.usbDiskModeActivate()
  end

  if pad:down() then
    System.usbDiskModeDeactivate()
  end

  if pad:circle() or pad:triangle() then break end

  screen:print(100,110,"Press up to activate USB.",red)
  screen:print(100,120,"Press down to deactivate USB.",red)
  screen:print(100,130,"Press circle or triangle to exit.",red)
end

[dan369]

you forgot pad = Controls.read()........

[Digikid13]

.......

[slasher101]

Hey guys, looking into lua, i wanna see how to do some basic stuff.
This doesn't work though.

local green = pge.gfx.createcolor(255, 150, 0)
local white = pge.gfx.createcolor(255, 255, 255)
local black = pge.gfx.createcolor(0,0,0)
local whitesemi = pge.gfx.createcolor(255, 255, 255, 50)

local verdana9 = pge.font.load("verdana.ttf", 9, PGE_RAM)

if not verdana9 then
    error("Failed to load font.")
end

local verdana12 = pge.font.load("verdana.ttf", 30, PGE_RAM)

if not verdana12 then
    error("Failed to load font.")
end

local logo = pge.texture.load("background.png")

if not logo then
    error("Failed to load logo.")
end

local index = 1

local basedir = pge.dir.getcwd()

while pge.running() do

    pge.controls.update()
    
    pge.gfx.startdrawing()
    
    pge.gfx.clearscreen()
    
    logo:activate()
    
    logo:draweasy(0, 0)
    verdana12:activate()
      verdana12:printcenter(10, white, "TestGame")
      verdana12:printcenter(115, white, "TestGame2")
	verdana12:printcenter(200, black, "Press X to continue")
	verdana12:printcenter(235, black, "Press O to Quit.")
         if pge.controls.pressed(PGE_CONTROL_CROSS) then
         verdana12:printcenter(60, white, "X presses")
	 end
	if pge.controls.presses(PGE_CONTROL_CIRCLE) then
	pge.exit()
	end

    
        
    
    pge.gfx.enddrawing()
    
    pge.gfx.swapbuffers()

end

But i always prints/does what ever is in the X event even when i dont press it.
Any help?

[Digikid13]

I'm not sure what is wrong with yours, but this works for me.

local green = pge.gfx.createcolor(255, 150, 0)
local white = pge.gfx.createcolor(255, 255, 255)
local black = pge.gfx.createcolor(0,0,0)

local verdana12 = pge.font.load("verdana.ttf", 30, PGE_RAM)

if not verdana12 then
	error("Failed to load font.")
end

local logo = pge.texture.load("background.png")

if not logo then
	error("Failed to load logo.")
end

while pge.running() do

	pge.controls.update()
	pge.gfx.startdrawing()
	pge.gfx.clearscreen()

	logo:activate()
	logo:draweasy(0, 0)

	verdana12:activate()

	verdana12:printcenter(10, white, "TestGame")
        verdana12:printcenter(115, white, "TestGame2")
        verdana12:printcenter(200, white, "Press X to continue")
	verdana12:printcenter(235, white, "Press O to Quit.")

	if pge.controls.pressed(PGE_CTRL_CROSS) then	
                verdana12:printcenter(60, white, "X pressed")
	end

	if pge.controls.pressed(PGE_CTRL_CIRCLE) then
                pge.exit()
	end
	pge.gfx.enddrawing()
	pge.gfx.swapbuffers()
end

[Feliciteria]

Hello! newbie here

Is there a LIBCURL like function for LUA? or any function/snippet that can download a file from http/ftp and save it to the memory stick?

thanks in advance! ^^

[corytheidiot1]

Ok, I have finally decided to post to get some help with my script. I need to get this to work on LPHMv2.


I need to load "icon.png" from all folder under "resource". My folder structure is:

App Folder
/\
resource
/\
folder a | folder b | folder c | etc. etc.

I need to load "icon.png" from folders a,b,c...

I am trying to load them with:

icon = {}

function get_icons()

	for i=3,listnum do
		if System.doesFileExist("resource/" ..list[i].name .."/icon.PNG") == 1 then 
			icon[i-3] = {img = Image.load("resource/" ..list[i].name .."/icon.PNG")}
				else error_message = "Error: Get Icons Failed." 
					System.message("Information: \n" ..error_message .."\nError Message: 001HP \nWe apologize for any inconvenience.","0")
				error = 1
				break
			
		end
	end

end

I keep having it crash when I remove "break" from the function. I have been trying to fix this most of today. I am trying to load all the images before I start my main loop so they will be ready to blit.

[Digikid13]

I'm not really sure what the problem is, it should work.......

[Ben93]

Your right here this is better.

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

while true do

  screen.clear()
  pad = Controls.read()

  if pad:up() then
    System.usbDiskModeActivate()
  end

  if pad:down() then
    System.usbDiskModeDeactivate()
  end

  if pad:circle() or pad:triangle() then break end

  screen:print(100,110,"Press up to activate USB.",red)
  screen:print(100,120,"Press down to deactivate USB.",red)
  screen:print(100,130,"Press circle or triangle to exit.",red)
end

tnx for helping me out!
So, if I get this right, I'm now able to turn off and on usb, without having to reset the app?
It has been a while since a worked on thisone, but, it's getting much better!

[Digikid13]

Yes but I forgot something.

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

while true do

  screen.clear()
  pad = Controls.read()

  if pad:up() then
    System.usbDiskModeActivate()
  end

  if pad:down() then
    System.usbDiskModeDeactivate()
  end

  if pad:circle() or pad:triangle() then 
   System.usbDiskModeDeactivate() --<---This
   break
 end

  screen:print(100,110,"Press up to activate USB.",red)
  screen:print(100,120,"Press down to deactivate USB.",red)
  screen:print(100,130,"Press circle or triangle to exit.",red)
end

[Ben93]

tnx again!

But what do i have to do if i want to implement the drivers in my brew.
Somebody told me it have to be something like this, but it doesn't work

This on the first line:

doesLPHMDriversExist = System.doesFileExist("ms0:/seplugins/load.pbp")

And this after pad = Controls.read()

if doesLPHMDriversExist==0 then System.message("The LPHM Drivers don't seem to be installed, please press Yes to install them now.",1)
button = System.buttonPressed(1) if button == "yes" then dofile("ms0:/PSP/GAME/Recovery_prx_flasher/drivers/installDrivers2.lua")  end

load.pbp is in seplugins, but i dont know anymore how it got there, was it installed with the drivers? (I deleted them from flash1 for testing the install function now in my brew)

[Digikid13]

It might have, I'm going to find out.

[Ben93]

There just has to be a way to use some lua functions, whitout having the drivers installed, because, the drivers are just for some functions as ISO etc, don't they?
Whatever i try, I keep getting the message "luahmdrivers aren't installed....."
Maybe it works if I do System.runeboot with an eboot - I made of the script for the drivers - for installing the drivers instead of doing dofile for the script to install?
EDIT: doesn't work either

[dan369]

What HM version you using?

[Ben93]

uuuhm, the drivers are from luaplayer hm8 and I make my eboot with mirolua 2.6

[dan369]

Why don't you just use HMv2? The drivers are bulit in & its much faster than HM8

[Ben93]

So, you are saying that I don't have to make my eboot with mirolua, but that I have to use my script with the eboot from lua hm v2 so that I don't have to install the drivers?

It's working now, because i just put whole my script after the script for installing the drivers, and use the same eboot for installing the drivers, wich have to be lua hmv2 if I get things right?

Sorry, pretty noobish

[dan369]

You don't 'have' to use it, but it comes with everything in the eboot(don't have to install drivers).
Though, there is slight changes in the API, so you'll need to read it's docs.

[Ben93]

tnx, I'll take a look at it. So i have to put my script.lua in the same directory as the eboot?

Another thing: does an mp3 file have to be in special bitrate or sample? because it won't load...

[dan369]

Yeah, same directory. Yeah, i think so. I think HMv2 uses the actually PSP media code(to play music), & some mp3 formats aren't support but these are very few, you'll have to ask someone else about the mp3 as i don't use HMv2.