Lua Programming Help Thread

Hey guys/girls, I was wondering if it's possible to run the lua scripts in Windows. I don't want to start GTA, load the eLoader and then the LuaPlayer to test my script.

I'm new on this (just started) so be easy on me mmmkay? :D :P

Go to luaplayer.org and download the Window Luaplayer.

Zitat:

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Zitat von matriculated

Go to luaplayer.org and download the Window Luaplayer.

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:Argh: How come *I* didn't see that :Cry:

Thanks :)

i tried that but whenever i opened up the file the command came up but shut down just as fast.

also on my script i get this problem:

Click Me

plz help...

Some of you may know my Stick Dance and I am making Stick Dance V2. Well I've run into a problem. In version 1 the stick figures had white backgrounds but this time the are tranparent. And because of that, you can see the "still" figure (the one when you don't press anything, see Stick Dance V1) underneath the new move figure. So my question is, how do I make "still" dissapear when I press a button but then come back when I release it?

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Zitat von Greenskull

Some of you may know my Stick Dance and I am making Stick Dance V2. Well I've run into a problem. In version 1 the stick figures had white backgrounds but this time the are tranparent. And because of that, you can see the "still" figure (the one when you don't press anything, see Stick Dance V1) underneath the new move figure. So my question is, how do I make "still" dissapear when I press a button but then come back when I release it?

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heres an idea.
the blit code you use for your still image, replace it with this below, of course replacing x,y, and stillimage with whatever is in your game.
This code is saying basicly that if no button is pressed then print the image.

Code:

---

if tostring(Controls.read()) == "Controls (0)"  then
screen:blit(x,y,stillimage,true)
end

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why not just do "screen:clear()"?

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Zitat von Altair

why not just do "screen:clear()"?

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Thanks PSPMillionaire! You are a life saver! And to Altair, Screen:clear gets rid of everyhting on the screen including the background.

with these lines

Code:

---

        if pad:square() then
        screen:blit(99, 124, image)
        screen.waitVblankStart()
        sound2:play()
        screen.flip()

---

How do I make it so the sound only play once untill it is completely done. It plays but then if the button is pushed again or held down it repeats over and over.

Dr. Butcher try something like..

Code:

---

if pad:square() and not sound2:playing() then
        screen:blit(99, 124, image)
        screen.waitVblankStart()
        sound2:play()
        screen.flip()

---

Zitat:

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Zitat von PSPMillionaire

Dr. Butcher try something like..

Code:

---

if pad:square() and not sound2:playing() then
        screen:blit(99, 124, image)
        screen.waitVblankStart()
        sound2:play()
        screen.flip()

---

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error: index.lua:78: loop in gettable

line 78 is if pad:square() and not sound2:playing() then

Hey PSPMillionaire. I have another problem. When you press two buttons you see both stick figures. How do I make it so that the first figure dissapears and the newest button pressed stays?

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Zitat von Dr. Butcher

error: index.lua:78: loop in gettable

line 78 is if pad:square() and not sound2:playing() then

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THIS is the error ive been trying to figure out to put in my error thread, anybody know the solution?

For the loop ingettable error try loading your sound first normally...

Code:

---

sound2 = Sound.load("blah")

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Then put your sound into a local variable

Code:

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local sound = sound2

---

To play the sound use

Code:

---

voice = sound:play()

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instead of sound2:play()
and to stop it use

Code:

---

voice:stop()

---

instead of sound2:stop()

This has helped me get rid of that error before in my own programs.

EDIT:
To Greenskull...
Check the value of all buttons being pressed...you could use that bit of code i gave you earlier. What you should do is print Controls.read() to the screen and see what the value is while pressing the two buttons you need. Instead of saying if pad:cross() and pad:square() you can say
if tostring(Controls.read()) == "Controls (thevalueyouneed)" then
...there are a million ways you could do it ...thats one

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Zitat von PSPMillionaire

For the loop ingettable error try loading your sound first normally...

Code:

---

sound2 = Sound.load("blah")

---

Then put your sound into a local variable

Code:

---

local sound = sound2

---

To play the sound use

Code:

---

voice = sound:play()

---

instead of sound2:play()
and to stop it use

Code:

---

voice:stop()

---

instead of sound2:stop()

This has helped me get rid of that error before in my own programs.

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and mine :mrgreen:

i got a problem with a piano app i'm making.
i'm trying to get into it time, so the noise only plays every second or so. i have incorporated sound into a different game, along with time, but i am unable to in this one. i swear i copied it exactly. but still same problem. i can get sounds to play if i take time out, but obviously the sound gets warped.
here's what pressing a button looks like:

Zitat:

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if pad:square() then



f:play()
if time == 0 then
time = 1

end
end

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by the way, it's within a while true to.
thanks.

Zitat:

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Zitat von Greenskull

Hey PSPMillionaire. I have another problem. When you press two buttons you see both stick figures. How do I make it so that the first figure dissapears and the newest button pressed stays?

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please I want this done today. Anybody?

Millionaire, In the begining of the code I have more than one sound activated for each button, will what you said work anyway?

if theyre not playing at the same time, just change
local sound = yournewsoundhere
if they are playing at the same time you could make another set of the variables

bare with me im completely new at this

Code:

---

        if pad:cross() and not sound4:playing() then
        screen:blit(175, 177, yellow)
        local sound = sound4
        voice = sound:play()
        screen.flip()

---

still gets me the loop error

Zitat:

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Zitat von PSPMillionaire

For the loop ingettable error try loading your sound first normally...

Code:

---

sound2 = Sound.load("blah")

---

Then put your sound into a local variable

Code:

---

local sound = sound2

---

To play the sound use

Code:

---

voice = sound:play()

---

instead of sound2:play()
and to stop it use

Code:

---

voice:stop()

---

instead of sound2:stop()

This has helped me get rid of that error before in my own programs.

EDIT:
To Greenskull...
Check the value of all buttons being pressed...you could use that bit of code i gave you earlier. What you should do is print Controls.read() to the screen and see what the value is while pressing the two buttons you need. Instead of saying if pad:cross() and pad:square() you can say
if tostring(Controls.read()) == "Controls (thevalueyouneed)" then
...there are a million ways you could do it ...thats one

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what do you mean by values? and will this make my newest button pressed's picture show up?

Code:

---

        if pad:cross() then
        screen:blit(175, 177, yellow)
        local sound = sound4
        if not sound:playing() then
        voice = sound:play()
end
        screen.flip()
end

---

see what that does

Zitat:

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Zitat von PSPMillionaire

Code:

---

        if pad:cross() then
        screen:blit(175, 177, yellow)
        local sound = sound4
        if not sound:playing() then
        voice = sound:play()
end
        screen.flip()
end

---

see what that does

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loop in gettable

EDIT I see you edited, hold on.

Nope, the same.

The line stops crashing when if not sound:playing() is removed, and then it works like it does before (repeating the sound)

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Zitat von pauldude550

i got a problem with a piano app i'm making.
i'm trying to get into it time, so the noise only plays every second or so. i have incorporated sound into a different game, along with time, but i am unable to in this one. i swear i copied it exactly. but still same problem. i can get sounds to play if i take time out, but obviously the sound gets warped.
here's what pressing a button looks like:



by the way, it's within a while true to.
thanks.

---

i really don't like to do this kind of thing, but i feel it went a little unnoticed. i know it is the wrong thing to do, but hopefully you can see my side, as i kind of know it wouldn't have been answered if i just left it.

hi well i converted an MP3 to the right format and whatnot and when i try to run it i get this error:

Zitat:

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Zitat von WindowsLuaPlayer

C:\>Luaplayer pspmillionares.lua
4 [unknown (0xAAC)] Luaplayer 2844 handle_exceptions: Exception: STATUS_AC
CESS_VIOLATION
1754 [unknown (0xAAC)] Luaplayer 2844 open_stackdumpfile: Dumping stack trace
to luaplayer.exe.stackdump
3485 [unknown (0xDE8)] Luaplayer 2844 handle_exceptions: Exception: STATUS_AC
CESS_VIOLATION
3626 [unknown (0xDE8)] Luaplayer 2844 handle_exceptions: Error while dumping
state (probably corrupted stack)

C:\>pause
Press any key to continue . . .

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here is the code for it:

Code:

---

theme = Sound.load("tormtheme.wav", true)
local sound = theme

---

further down:

Code:

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voice = sound:play()
Music.volume(128)

---

further down at end of code:

Code:

---

if pad:start() then
voice:stop()                               
break
end
screen.flip()
end

---

way to fix this?

also where is a good place to get some good sound effect .wav's because on my computer they sound good but on the psp they sound all bad...

and when u press the button it plays the .wav file but if u press it again or hold it down it replays the .wav over and over till its like a lhfslskjhfhds... ya that it overlaps. so i know alot but anyhelp?

i pm'd u Millionaire but maybe u didn't get it i unno...

Zitat:

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Zitat von pauldude550

i really don't like to do this kind of thing, but i feel it went a little unnoticed. i know it is the wrong thing to do, but hopefully you can see my side, as i kind of know it wouldn't have been answered if i just left it.

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What exactly do you want now..
Do you want it to play a note every time you hit a button without playing over and over while its being held?
if so in your code at the top put

oldpad = Controls.read()

in your while true do loop at the very end of it put

oldpad = pad

considering you're using pad as your button input variable
then when pressing a button do like..

if pad:cross() and oldpad:cross() ~= pad:cross() then
do your code
end

thanks for the help there pspmillionaire. i was obviously a bit silly when writing it, as i didn't even copy in the text?
was doing about 3 things at once if i remember. you got the idea though, i'll try it tomorrow, as it's a little late now!
thanks again

just gave it a quick go, and works just ace. now a few more complicated things to add...just what i like... :dry:

edit: i gave it a go on psp, and now a sound plays when pressing x. but if you try to press other buttons, they don't sound. they only make a noise when you press x as well as the button. looks like i'll have to have another look over. if you're willing, i'll just post what i got in the text (obviously not all of it).

Is it possible for a sprite to move further than pixel 480? and is it possible to move the on-screen display past pixel 480 aswell? If so can anyone help me out, I have a background which it 2000 X 272 and need the sprite to move further than pixel 480 so I need to scroll the screen display along (not move the background backwards) so that collision with objects will still work as you move along the screen..

please someone help this is important. When you press two buttons you see both stick figures. How do I make it so that one dissapears and the other stays? they have transparent backs which it what's causing the problem. you can see both underneath

Zitat:

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Zitat von lui2603

Is it possible for a sprite to move further than pixel 480? and is it possible to move the on-screen display past pixel 480 aswell? If so can anyone help me out, I have a background which it 2000 X 272 and need the sprite to move further than pixel 480 so I need to scroll the screen display along (not move the background backwards) so that collision with objects will still work as you move along the screen..

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they can move forever.

Zitat:

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Zitat von Greenskull

they can move forever.

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I know they can move forever but how do I make the screen display move with them???

Zitat:

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Zitat von Greenskull

please someone help this is important. When you press two buttons you see both stick figures. How do I make it so that one dissapears and the other stays? they have transparent backs which it what's causing the problem. you can see both underneath

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make an if before reading 2 buttons at the same time like..

stickpadxando = "off"

if stickpadxando = "on" then
if pad:cross() and pad:circle() then
*do whatever*
end
end

then you need another variable like stickpadx to use x on its own...

maybe there is an easier way but just an idea

Code:

---

    if pad:square()
                if usb = 0 then
                System.usbDiskModeActivate()
                usb = usb + 1
                        if usb > 1 then
                        usb = 1
                        end
                end
        end

---

i get this error: 'then' expected near 'if'
how do i fix it?

you put if pad:square() without a then...

Hi this is aimed at PSPmillionair or anyone else who has read this tutorial:

http://www.evilmana.com/tutorials/lua_tutorial_05.php:

ok so i tried to make a table but the tutorial was a bit confusing. and this is what i came up with:

Code:

---

Hooger = {}
Hooger[1]= screen:print(100,100, "Hooger is #1")
Hooger[2]= screen:print(100,200, "Hooger is the best")
Hooger[3]= screen:print(200,100, "I love my PSP")
Hooger[4]= screen:print(110,110, "I am cool")

---

and here is the button imput:

Code:

---

if pad:square() then
Hooger[3]()
end

---

and i get this error:


C:\Tutorial>Luaplayer Tutorial2.lua
error: Tutorial2.lua:48: attempt to index global `Hooger' (a number value)

C:\Tutorial>pause
Press any key to continue . . .

Im starting from scratch relearning everything and i didn't really understand the Tables tutorial so thats what i got.

if you need full code request it :D

oh...now i get this error:


C:\Tutorial>Luaplayer Tutorial2.lua
error: Tutorial2.lua:48: attempt to call field `?' (a nil value)

*hand slaps head*
i hate little details that get in the way...
thanks

now i get: "then" expected" near "="

you need something which equals hooger
where you have that table you should put underneath something like

hoogernumber = hooger[1]

then when square is pressed you can put

hoogernumber = hooger[3]

get it?

Zitat:

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Zitat von lui2603

make an if before reading 2 buttons at the same time like..

stickpadxando = "off"

if stickpadxando = "on" then
if pad:cross() and pad:circle() then
*do whatever*
end
end

then you need another variable like stickpadx to use x on its own...

maybe there is an easier way but just an idea

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wont work. I mean, left trigger does one move and right trigger does another. I want it that if you press both only one appears
EDIT: wait that might work if I word it differently. I'll come back with results.

Edit: ok I got a problem. It says "then expected near =" this is my code

Code:

---

if lw = "true" then
screen:blit(198, 40, l)
end

if pad:l() then
lw = "true"

---

help please!

Zitat:

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Zitat von Greenskull

wont work. I mean, left trigger does one move and right trigger does another. I want it that if you press both only one appears
EDIT: wait that might work if I word it differently. I'll come back with results.

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ok how about have

buttonpressed = "none"

if pad:l() then
buttonpressed = "l"
end
if pad:r() then
buttonpressed = "r"
end
if pad:r() and pad:l() then
buttonpressed = "randl"
end

if buttonpressed=="l" then
*do dance for l*
end
if buttonpressed=="r" then
*do dance for r*
end
if buttonpressed=="randl" then
*do dance for randl*
end

not sure if that would work.. but give it a try

You got that error cause you only put one =

in an if statement you need if blabla==true then
.....