Lua Programming Help Thread

Hm...I've got the timer now working, but I'm having another problem with it.

If I run the program once it works fine, but once I try and run it a second time I get this error:

Code:

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error: DEFUSE.LUA:152: loop in gettable
Error: No script file found.

Press start to restart

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The code I have at Line 152 is this:

Code:

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Timer:start()

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MagicianFB, can you tell a little about your rpg? Are you just using screen sized backgrounds or can you do the scrolling bg most rpgs have?
I'm interested in doing an rpg myself, and since there seems to be no rpg maker in site for psp, I'm learning lua now. It'd be nice to hear a little about your project so I have a general idea of how to get started.
Also, this may be a little advanced, but would there be a way to display some sort of fmv? I'm not expecting to be able to do a Final Fantasy or something as my very first project, but it seems like with the psp's power it shouldn't be a problem to have decent looking backgrounds and even a movie or two, right? Is there maybe a way for your lua script to make calls to the psp firmware functions? Like to use the psp's built in mp4 or mp3 playback? Or is that something that would need to be built into the actual lua player?

Can u make lua loop this kind of code?

Code:

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pad = Controls.read()

        if pad:circle() then
                screen:blit(0, 0, lua, false)
                screen:print(220, 170, "Fel", svart)
                screen:print(220, 190, "Triangel: Tillbaka", svart)
                screen:print(220, 210, "[]: Avsluta", svart)
                screen.flip()
       
                while true do
               
                jag = Controls.read()
               
                if jag:triangle() then
                        screen:blit(0, 0, lua, false)
                        screen:print(220, 170, "Hejsan", svart)
                        screen:print(220, 190, "O: Nåt trevligt", svart)
                        screen:print(220, 200, "X: Info", svart)
                        screen:print(220, 210, "[]: Avsluta", svart)
                        screen.flip()
                end
                end

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Just put a while true loop around the entire thing, too

Zitat:

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Zitat von lingon

Can u make lua loop this kind of code?.

Code:

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pad = Controls.read()

        if pad:circle() then
                screen:blit(0, 0, lua, false)
                screen:print(220, 170, "Fel", svart)
                screen:print(220, 190, "Triangel: Tillbaka", svart)
                screen:print(220, 210, "[]: Avsluta", svart)
                screen.flip()
       
                while true do
               
                jag = Controls.read()
               
                if jag:triangle() then
                        screen:blit(0, 0, lua, false)
                        screen:print(220, 170, "Hejsan", svart)
                        screen:print(220, 190, "O: Nåt trevligt", svart)
                        screen:print(220, 200, "X: Info", svart)
                        screen:print(220, 210, "[]: Avsluta", svart)
                        screen.flip()
                end
                end

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I'm posting from school :D

Okay, thanks alot.

Does anyone know how I can change a number to the numer-1 or +1 with the triggers (or any button) like in PSP Soduko?? So if I program a button to insert a 5 or any numer in 1, 1, then how can i change the 5 to go +1 each time I press the right trigger?

Code:

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if pad:r() then
  if var >= 5 then
      var = var + 1
  else
      var = 5
  end -- if
end -- if

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something like this?

Zitat:

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Zitat von Jenay

Code:

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if pad:r() then
  if var >= 5 then
      var = var + 1
  else
      var = 5
  end -- if
end -- if

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something like this?

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I only get this error when I use your code: "attempt to comprare number with nil"

hi im new to the whole modding a psp thing... im from england and just downgraded my firmware and started to learna bit of lua

heres the code of my first program (after that tutorial):

Zitat:

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System.usbDiskModeActivat e()

cursor = Image.load("cursor.png")

x = 200
y = 140

screen.waitVblankStart()

while true do

pad = Controls.read()


if pad:analogX() < -30
then x = x - 1 end

if pad:analogx() > 30
then x = x + 1 end

if pad:analogy() < -30
then y = y - 1 end

if pad:analogy() > 30
then y = y + 1 end

if pad:start()
then break end

screen:blit(x, y, cursor)
screen.flip()


end

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im not sure if its going the right way to making a cursor move on the screen, ive had experience with java and things but all i get is an error that reads:

Zitat:

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error: SCRIPT2.LUA18 loop in gettable

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help will be appreciated :Jump:

Maybe it has something to do with this

Code:

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if pad:analogy() < -30 --I think you should have a big Y here instead of  a small one
then y = y - 1 end

if pad:analogy() > 30
then y = y + 1 end

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I'm not sure though. Try it out and see what happens =)