Lua Programming Help Thread

[FaT3oYCG]

no because the dpad is not the triangle, square, circle, cross, l, r, start, select, home, note, screen, vol up, vol down or analougue buttons it is the directional pad

[PSProgramer]

Yeah, sry turtlesPwN I didn't think of that last night, thanks for improving it
-= Double Post =-
By the way, i don't know if any of you have seen my post, but I am in need for some grafix artists,and/or a co programer for a Zelda game I'm working on in lua. PM me if your interested, or just reply on this thread

[TurtlesPwn]

Umm, klepto, what exactly was wrong with how I did it, and what exactly did you fix? Nothing?

edit: oops typo what->was

[FaT3oYCG]

no because the dpad is not the triangle, square, circle, cross, l, r, start, select, home, note, screen, vol up, vol down or analougue buttons it is the directional pad

yeah like i said i would also like to add that people use the word pad and oldpad because it is quicker to do instead of typing the whole thing every time using Dpad just makes it take longer it has an extra letter and you have to press the shift key even if it was all in lowercse it would still be wrong because every button on the psp is not the Dpad it is the controls hence Controls.read() incase you didnt know Dpad stands for directional pad so all you managed to do was give some bad advice no offense

[j3r3mie]

Thanks. For the fastest with anwser me. What abotu that one.

I'll want to creat a drum app. I wnt to load my sound and associate them to a name. Then I want to, if i push X, per exemple, play the sound associate to "kick" bu tonly once. Do u know how i have to do that.

I alerdy try but i wasn'n able.

[TurtlesPwn]

If you can't figure that out, stop attempting to create anything. Besides, drum and soundboard apps have already been beaten to death.

[PSProgramer]

look I am all against people putting don new programers for trying, but I might have to kinda agree with TurtlesPwn. I mean there are already a TON of drum and sound apps, so I mean unless you are like dead-set on making this, I would sugest making something else. But thats just me.

[KleptoOne]

Umm, klepto, what exactly was wrong with how I did it, and what exactly did you fix? Nothing?

edit: oops typo what->was

The point I was trying to make was that what you were doing was the same in concept as what the previous coder was doing. Your if conditional logic was slightly different, but nothing revolutionary. Your statement of his way being "horrible" got under my skin, since your method displayed nothing novel. Plus it was late and I was cranky.

[PSProgramer]

Alright, I have a question, hehe, How would I go about unbliting an object. Let me explain, I want like a coin on the screen right, so the character can collect it. I can do that part. But I want to have it disapear when the character walks over the coin. Also how can you put the coins randomly in a selected space like in only in a 100x100 invisible box?? thanx aton

-PSProgramer

[TurtlesPwn]

The point I was trying to make was that what you were doing was the same in concept as what the previous coder was doing. Your if conditional logic was slightly different, but nothing revolutionary. Your statement of his way being "horrible" got under my skin, since your method displayed nothing novel. Plus it was late and I was cranky.

My method was made to accomplish the same thing as his method, but he was using if pad:cross() and oldpad:cross() ~= pad:cross() then, which makes three function calls to the input data while only really needing two.

PSProgrammer - make a table with the items x, y, image, and a variable indicating whether it has been picked up. when it has not been picked up, blit it and check if the player is over it. then when it is picked up, stop blitting it and stop checking if the player is over it.

[PSProgramer]

thanx turtlesPwn

[PSPMod999]

What does the System.startOSK() function in LuaPlayerHM 6.x do? Does it start the sony OSK or some other one?

And if it uses the Sony, how do you use that OSK in a program?

[dan369]

PSProgramer-

Coin_Start = 1 
Coin_End = 2 
Coin_1 = {}
Coin_1.x = 10
Coin_1.y = 10
Coin_1.visible = "true"
Coin_1.img = Coin

Other Variables 

function Coin()

for a = Coin_Start, Coin_End 
if Coin_1.visible  = "true" then
screen:blit(Coin_1[a].x, Coin_1[a].y, Coin_1[a].img)
        end 
  end
end

Other Functions

if Player.x == 10 and Player.y == 10 then  
Coin_1.visible = "false" 
end
Other ENDING STUFF

It should work, I'm using this method On my PSP-SuperMarioBros. game to blit blocks :)

remember to call the function

 
Coin()

[FaT3oYCG]

What does the System.startOSK() function in LuaPlayerHM 6.x do? Does it start the sony OSK or some other one?

And if it uses the Sony, how do you use that OSK in a program?

text_output = System.startOSK("name1", "name2")

then text_output is whatever the user typed so

screen:print(10, 10, text_output)

would show that text on the screen

[dan369]

I'm guessing name1 and name2 are variables?

[FaT3oYCG]

no you have to put them in though otherwise it wont work i think that they are displayed when the osk is shown

[_df_]

PSProgramer-

Coin_Start = 1 
Coin_End = 2 
Coin_1 = {}
Coin_1.x = 10
Coin_1.y = 10
Coin_1.visible = "true"
Coin_1.img = Coin

Other Variables 

function Coin()

for a = Coin_Start, Coin_End 
if Coin_1.visible  = "true" then
screen:blit(Coin_1[a].x, Coin_1[a].y, Coin_1[a].img)
        end 
  end
end

Other Functions

if Player.x == 10 and Player.y == 10 then  
Coin_1.visible = "false" 
end
Other ENDING STUFF

It should work, I'm using this method On my PSP-SuperMarioBros. game to blit blocks :)

remember to call the function

 
Coin()

I would do something like this instead;

g_Coins = {}
g_Coins[ (10 * 1000) + 10 ] = 1

other functions.......


local i
for i in pairs(g_Coins) do	
	local col = i % 1000
	local row = (i - col) / 1000 
	-- the subtraction stops turning it into decimals
        -- and removes need for math.floor etc
        -- unless your lua is compiled for integer numbers only
	screen:blit(row, col, Coin)
end

you could stick the row/col calcs inline and remove two local vars, i left it in as it helps explain what I am doing, but for non tutorial code I would do it as one line of code inside the screen:blit...

to 'delete' a coin set its entry to nil like. also you would need to do screen bounds checking etc etc etc. setting something to nil deletes that entry in the table.

g_Coins[ (10 * 1000) + 13 ] = nil

thus we just deleted the coin at row 10, column 13.

Oh, the 1000 stuff is assuming 1000 columns per row. If your map is < 1000 tiles wide your safe :)

why are you using true and false as strings and not the built in lua constants?

Lua's tables are powerful. use them. I hope your Zelda game isn't full of the above type of coding, all those if statements and extra table entries like your coin example. Use the power of iterators and table hashes that lua gives you!

You could just abstract g_Coins into a generic table and have each row/col entry point to its sprite, eg:

g_Overlays= {}
g_Overlays[ (10 * 1000) + 10 ] = Mushroom
g_Overlays[ (10 * 1000) + 11 ] = CoinSprite

local i, sprite
for i, sprite in pairs(g_Overlays) do	
	screen:blit((i - (i%1000)) / 1000 ,  i % 1000 , sprite)
end

[andyauff]

The name1 and name2 are the text already in the osk display, and what it says on the osk. For example, "Type text here" and "Sony's OSK". Try it out and you'll see what I mean.

[dan369]

df - True, it's an alternate method using math. I don't use much math, i'll gunna take a look into using some

[PSPMod999]

Thx for the help, FaT3oYCG.

[omegaridley]

I keep getting this error when using my program:

:8: '=' expected near 'button'

here is line 8:

System.buttonPressed(1) If button == "yes" then UMD.ripISO("ms0:/ISO/9660.ISO") end

I read many tutorials and the functions.txt that came with luaplayerHM v6.6.


Can anyone help?

[SG57]

Use the Lua Help Thread plz...

And you capitalized the 'If', make the I lowercase.

[omegaridley]

Use the Lua Help Thread plz...

And you capitalized the 'If', make the I lowercase.

sorry about the thread thing and i will try what u suggested.

i forgot that LUA is case sensitive

[Art]

Lol, you're kidding? There's actually a LUAplayer function to rip an ISO?
I wonder what Shine would have thought about making that as easy as one line.

[SG57]

"Lua"? heh, now don't go thinking Lua's syntax is so unique ;)

Art - Personally, I'm losing more and more respect for Lua users by the update ;)

[omegaridley]

It worked, now my program is 100% working now!!!

thanks for ur help!!!

Note: its not a bricker!
-= Double Post =-

Lol, you're kidding? There's actually a LUAplayer function to rip an ISO?
I wonder what Shine would have thought about making that as easy as one line.

there is, and it works 100%!!!


dumps really fast! used it may times and i all games have worked 100%!

btw luv ur time baby app, but i have a slim, so i use time machine and it works well!

[omegaridley]

I want to make a background to my app insted of a black screen, how do I do so?

i need some codes, can anyone help out?

[slicer4ever]

simply load whatever background image you want to use than have that be the first image you blit to the screen

i havent used lua in a long time so i don't remeber the load command but i do remeber the blit:

screen:blit(0, 0, bg) <--correct me if i'm wrong anyone

anyways bg is the image and simple google lua image loading commands, or go back a page or two in this thread until you see someone who has loaded an image

[Art]

"Lua"? heh, now don't go thinking Lua's syntax is so unique

Well mine wasn't as simple to code as:

RipISO(); // Please

I hated the idea of one on a forum. Now there can be hundreds of them.

btw luv ur time baby app, but i have a slim, so i use time machine and it works

Thanks. Funny I thought Time Machine would stuff up the graphics.

[omegaridley]

simply load whatever background image you want to use than have that be the first image you blit to the screen

i havent used lua in a long time so i don't remeber the load command but i do remeber the blit:

screen:blit(0, 0, bg) <--correct me if i'm wrong anyone

anyways bg is the image and simple google lua image loading commands, or go back a page or two in this thread until you see someone who has loaded an image

nvm i got it already, u were right though, thx for ur help!