Lua Programming Help Thread

[FreePlay]

Wrong, their was a post a while back but i dont know were it is now....and yes their is a way

No, there isn't, or Lua Player couldn't read them.

[Cheez Pirate]

I still need to know how to load and use a font on the text you print to the screen.

[yaustar]

No, there isn't, or Lua Player couldn't read them.

Yes there is. You just compile the Lua scripts using Luac.exe in the Lua Binary repository. I tried this a while back.

[Cheez Pirate]

nvm. figured it out... now how do you reset your game. not going to lowser, but just reloading your game...like the reset button on an n64.

[TacticalPenguin]

Umm, only way I can think is somethin like this: Have index.lua be nothing but: dofile("game.lua")

And then in game.lua make something do break and thatll restart. Then how do you exit all the way out though.....

[Anti-QuickJay]

I need the code for exiting to the XMB from a pause menu

[TacticalPenguin]

os.exit() doesnt work so i dont think theres a way.

[Cheez Pirate]

white = Color.new(255,255,255)
menuBackground = Image.load("menuBackground.png")
usb = 0
while true do
screen:clear()
screen:blit(0,0,menuBackground)
pad = Controls.read()
if usb == 0 then
screen:print(0,0,"Off",white)
end
if pad:r() and usb == 1 then
System.usbDiskModeDeactivate()
usb = 0
end
if pad:r() and usb == 0 then
System.usbDiskModeActivate()
usb = 1
end
if usb == 1 then
screen:print(0,0,"On",white)
end
screen.waitVblankStart()
screen.flip()
end

i think its loading usb and turning it off and on so fast that it will never say off or shutoff. how do i fix it?

[Anti-QuickJay]

So theres no way of exiting to XMB? O well....

[FreePlay]

Yes there is. You just compile the Lua scripts using Luac.exe in the Lua Binary repository. I tried this a while back.

... and then can you still run them in the PSP Lua Player?

Besides... you can always decompile them.

[SuperBatXS]

os.exit() doesnt work so i dont think theres a way.

if pad:start() then
os.exit()
end

This is from the psplua game pack and it works perfectly. It does exit to the XMB.

[Anti-QuickJay]

Yes, It still runs in LUA Player, It just make sure no one steals your code.

[Access_Denied]

Yes, It still runs in LUA Player, It just make sure no one steals your code.

*Slaps forehead in disbelief of some people's inability to take a hint*

[Anti-QuickJay]

Sorry, Jeez

[TacticalPenguin]

white = Color.new(255,255,255)
menuBackground = Image.load("menuBackground.png")
usb = 0
while true do
screen:clear()
screen:blit(0,0,menuBackground)
pad = Controls.read()
if usb == 0 then
screen:print(0,0,"Off",white)
end
if pad:r() and usb == 1 then
System.usbDiskModeDeactivate()
usb = 0
screen.waitVblankStart(4)
end
if pad:r() and usb == 0 then
System.usbDiskModeActivate()
usb = 1
screen.waitVblankStart(4)
end
if usb == 1 then
screen:print(0,0,"On",white)
end
screen.waitVblankStart()
screen.flip()
end

[Cheez Pirate]

it doesn't change anything.
-= Double Post =-
it still does the quick of on and never shows "off"

[Dr.Gringo]

How do i use luac.exe to encrypt the lua files.

[TacticalPenguin]

white = Color.new(255,255,255)
menuBackground = Image.load("menuBackground.png")
usb = 0
while true do
screen:clear()
screen:blit(0,0,menuBackground)
pad = Controls.read()
if usb == 0 then
screen:print(0,0,"Off",white)
end
if pad:r() and usb == 1 then
System.usbDiskModeDeactivate()
usb = 0
screen.waitVblankStart(4)
end
if pad:l() and usb == 0 then
System.usbDiskModeActivate()
usb = 1
screen.waitVblankStart(4)
end
if usb == 1 then
screen:print(0,0,"On",white)
end
screen.waitVblankStart()
screen.flip()
end

Try that, it makes different buttons to switch it.

[SuperBatXS]

So, i was working on one of my projects and i had a question. If i move an image (cursor) and if i land on a specific part on a screen and press X, how do i make a new image splash on the whole screen?

[Access_Denied]

What do you mean, "splash"?

[SuperBatXS]

Like make something happen; make a whole new image appear on the whole screen or something happen. I obviously know how to move a cursor, but i don't know how to make something happen if X is pressed in a specific part of a screen (given by X and Y). Like in your periodic table (which is encoded so its hard to learn new things), if you press X on an element it shows the details. I am not using your periodic table in order to make my own (since your is encoded). Yes, i am working on a periodic table, but a totally different code, gfx, more scientific facts about each element.

[Access_Denied]

I can show you the code for my periodic table. I don't even know why I encrypted that part. I just encrypted the other part because it took me like three hours to plot all the data, and I didn't want anyone to steal it.

Anyway, I think I know what you want to do. Like say you've selected Oxygen, and you press X, you want a list of properties for Oxygen to come up, correct?

[SuperBatXS]

yes, exactly. But i am not copying your code, i just need some basic ideas about how to make this happen (pressing X on something). Thank you for you help.

edit:
by the way, just curious but have you heard of my game pack? you are welcome to get any ideas from there...

[Access_Denied]

yes, exactly. But i am not copying your code, i just need some basic ideas about how to make this happen (pressing X on something). Thank you for you help.

It's quite simple really. First you need a table with your elements.

element = {}
element[1] = {name = "Hydrogen", number = 1}
element[2] = {name = "Helium", number = 2}

So you have all 118 elements on the table. Now you need a variable for your cursor.

current_element = 1

Now you can do something like this:

screen:print(0,0,element[current_element].name,white)
screen:print(0,10,element[current_element].number,white)

I hope you understand. This is what I did in my code, but since there were blank spots, I had to make table entries like:

element[7] = {name = " ", number = " "}

I can show you my code if you want to. Just ask.

[Anti-QuickJay]

How do i use luaC to encrypt my script?

[TacticalPenguin]

if pad:cross() and cursor.x > lowestxpointofclickableit em and cursor.x < highestxpointofclickablei tem and cursor.y > lowestypointofclickableit em and cursor.y < highestypointofclickableo bject then
whatshorldhappenthenthing isclicked
end

[Dr.Gringo]

How do i use luaC to encrypt my script?

Yeah!! I wanna know too.....

[Yongobongo]

Wrong, their was a post a while back but i dont know were it is now....and yes their is a way

No their isn't!
But there is a way to encrypt your lua code.....And yes, it does work

[TacticalPenguin]

http://forums.evilmana.com/index.php?topic=273.0
Thats a thread on compiling lua files. My last post is how you could make the mouse do something when x is pressed and its at a certain point.

[yaustar]

... and then can you still run them in the PSP Lua Player?

Besides... you can always decompile them.

Yes you can run them in LuaPlayer and although you can decompile them, it won't be in a readable format as it is compiled into byte code.