Lua Programming Help Thread

[thecraziness1]

alright its been driving me crazy forever. Does LPHMv2 allow flash 0 access because I know how to code lua and so far Ive been unsuccessful? If I could get a solid answer to this it would settle my nerves

[FaT3oYCG]

is their a command like screen.waitVblankStart() but for a single image? That just shows the image for a bit. i know of a long way to do it.
-make a timer
--make it so the timer starts at like 5 seconds
---make the image display while the timer is greater than zero
but this seams like to much of a pain to me

yeah its a pain but you have to do it that way

alright its been driving me crazy forever. Does LPHMv2 allow flash 0 access because I know how to code lua and so far Ive been unsuccessful? If I could get a solid answer to this it would settle my nerves

yeah but i dont think it works properly

[xXChromeXx]

Can someone help me with a level editor? I don't know where to start.

Can someone at least describe how to do it. I'm stumped. Its for a breakout game.

[thecraziness1]

yeah i can access and write and to flash 1 and I can read from flash 0 I just cant write to it. It says that it is writing to it so I know nothing is wrong with my code its just when you go to see if it actually wrote the file/files to flash 0 and it doesnt? Any one know if it just doesnt function right or is there a way around it. Thanks in advance to anyone that helps.

[FaT3oYCG]

i have told many people many times HM is very buggy flash access is buggy along with other things, there is no way to fix the bugs that is down to HM himself.

you always have the alternative to switching to PGE it currently does not have many of the functions that HM does but with the release of 0.03 it will support module loading meaning that for example someone like me could create a module that could be loaded that would allow specific extra functions

Can someone at least describe how to do it. I'm stumped. Its for a breakout game.

what do you mean a level editor all it is is blocks on the screen?

[xXChromeXx]

To make the layouts of the blocks.

[FaT3oYCG]

1. decide the format of the file the levels will be in
2. code reading the file into ur game
3. code analysing the code you have read in
4. code turning those analysations into displaying the blocks for that level
5. im not going to code it for you, im making my own things (unless you pay me XD)

[dan369]

Wouldn't even be hard.
I mean, it's one screen, you don't have to take into account any sort of scrolling at all(though that is easy as-well).
You need some sort of cursor to move the tiles. A variable to hold the current selected tile, layer changing (the easiest way is using a bool).
For a understandable way to write a 2d array to a file view the scripts/examples thread.
With the way i did my function it took two values. mapX & mapY. Basically i have a little mini-menu where i enter the size of my map, then it creates the map & there you go.
to load a map i simply do:
mapX = #map[1]
mapY = #map

It's as easy as that. Though if you don't really understand tile-maps then your gunna have trouble.

[xXChromeXx]

Thanks thats what I needed

[seanpaul223]

I was wondering about if anyone has already used these LPHM's v7 built in functions:

System.startGameSave() 
System.startGameLoad()

How should i proceed to custom the Save file it retrieves with my own PIC1.png and ICON0.png images ?

Another question else, assuming i have saved something just this way:

System.startGameSave("Info", "Info", "Details",string_saved)

This work, but I guess i can do this to load information saved and store it into a variable:

loaded_data = System.startGameLoad()

The fact is doesn't return anything.

[dan369]

I think those functions don't work in HM7 (bugged), though supposedly fixed in HMv2 but i can't confirm that.

[FaT3oYCG]

no those ones actually work but when loading you need to pass the name that you gave to the sace i think it is the "info1" as you call it but i cant be sure of which one is the name for the save.

[EYEko]

Okay. this is probably the most noob post you will ever see. I want to code in Lua for the psp, but I have no clue where to start? I dont even know how to get Lua up and running, much less make a game with it.

Can anyone explain how to get lua to work, and direct me to a tutorial? thanks.

[FaT3oYCG]

use pge lua player - luaplayer.org click pge then download it has instructions on how to install i think

pge lua hello world tutorial - my website modern-gamer.tk click on the link, ill make more eventually, if you have any suggestions then feel free to tell me.

[dan369]

search programming in lua, lua manual, lua-wiki in google. Read & (hopefully) understand?

[thecraziness1]

i have a file browser and I need it to program runeboot when you choose a file.
I tried to run ext. = pbp but not working any ideas the browser is already fully functional just cant get the variable right to run chosen EBOOT.pbp. Im on LPHMv2 if it matters. Thanx in advance !!!!!!

[mootjeuh]

can you post your variables?

[dan369]

use string.sub() to find end of filename i.e

if string.sub(listOfFiles[currentSelecter].name, -4) == ".pbp" then

[thecraziness1]

Here is my code Im working with. Its not the whole code but the part of the code that controls running the eboot.
It works and it looks like its gonna launch the eboot but then it takes you back to the XMB and you get the cannot run game error.

Thanks in advance ! ! !

if pad:cross() and not oldpad:cross() then
if not fbrowser.fl[fbrowser.s].directory then
if string.lower(string.sub(f browser.fl[fbrowser.s].name, -4)) == ".pbp" then

System.runeboot("ms0:/psp/game/'fbrowser.fl[fbrowser.s].name'/eboot.pbp")
end
elseif fbrowser.fl[fbrowser.s].directory then
System.currentDirectory(f browser.fl[fbrowser.s].name)
fbrowser.s = 1
fbrowser.fl=System.listDi rectory()
fbrowser.nf=table.getn(fb rowser.fl)
fbrowser.ls = 1

end
end

screen.waitVblankStart()
screen.flipscreen()

oldpad = pad
if pad:start() then break end

end

[dan369]

What game/app did you try to run?

[thecraziness1]

any and it wont work. Just always get the same error message. Any Ideas ??? Do you want me to paste the entire code?

[mootjeuh]

try this:

System.runeboot(System.currentDirectory().."/"..fbrowser.fl[fbrowser.s].name)

[thecraziness1]

No Dice. Ive tried all kinds of strings and still get the cannot run game error. I bet its something super simple 2 that im just overlooking. Any more ideas ?

[mootjeuh]

try somethin' like this:

selection = 1
System.currentDirectory("ms0:")
files = System.listDirectory()
length = string.len(files[selection].name)
name = string.sub(fichiers[selection].name , length - 3)
if name == ".pbp" or name == ".PBP" then
   System.runeboot(System.currentDirectory().."/"..files[selection].name)
end

just rename the variables' name to yours, it's just an example. you'll know how to put the right things into the right places;)

[thecraziness1]

thanx ill give it a shot in a while and i think it looks like it should work so ill let ya know ! ! !

[dan369]

it's more or less the the same as your original method....also it's minus 4, there's 4 characters in .php
I think the problem had something todo with your cases. Nearly every eboot i've seen is in UPPER CASE
you had lower. Also even when you entered the directory i.e ms0:/...
you again used lower case. & AGAIN every psp i've seen went PSP/SOMETHING you had psp/something.
Most things are case sensitive and honestly i don't think this is any exception.
I'm no HM expert but its worth a try.

[thecraziness1]

ya i appreciate your help. Its actually my same browser i used in my psjournal program and im just altering it to run eboots so as far as the basic programming i already know its functional and running its just the runeboot system call thats having problems. Thanks to both of you for your help. Ill talk 2 u again soon and let u know how it goes !
-=Double Post Merge =-
Thank You Mootjeuh !!!!!! Your Idea got me thinkin and I was able to twist it around a bit and get it to work. Just like I said in the beginning. It was something super simple that I was just overlooking ! Thanks to both of you for takin the time to help. Talk to you guys soon!

[xXic3Xx]

i cant code lol

[FaT3oYCG]

some of your main problems seem to be that you dont understand the basic workings of the actual browser, seen as it is mostly identical to the one that Tactical_Penguin made that is probably why, if you searched into the functions that you are using and changed the variable names to somethingthat made sense to you then you would understand what was going on.

also lua is case sensitive with file names and function names.

[cmbeke]

im working on a point and click game in lua, i have the d-pad set up so if you click it it changes the frame. I have this code:

if currentpic == 1 then
if pad:left() and checkpad:left() ~= pad:left()  and not pad:select() then
currentpic = 2
end
if pad:right() and checkpad:right() ~= pad:right() and not pad:select() then
currentpic = 3
end
end
if currentpic == 2 then
if pad:right() and checkpad:right() ~= pad:right() and not pad:select() then
currentpic = 1
end
if pad:left() and checkpad:left() ~= pad:left()  and not pad:select() then
currentpic = 4
end
end
if currentpic == 3 then
if pad:left() and checkpad:left() ~= pad:left()  and not pad:select() then
currentpic = 1
end
if pad:right() and checkpad:right() ~= pad:right() and not pad:select() then
currentpic = 4
end
end
if currentpic == 4 then
if pad:left() and checkpad:left() ~= pad:left()  and not pad:select() then
currentpic = 3
end
if pad:right() and checkpad:right() ~= pad:right() and not pad:select() then
currentpic = 2
end
end

the code allows me to click the dpad and it determines the next pic to blit, it works fine for the first 3 pics but wont blit the fourth.

Spoiler for whole code if it helps:

-- Escape The Car
-- Ported By Cmbeke
-- Originally By Shawn Tanner
-- Uses A Modification on TacticalPenguin's Analog Code
-- 7/13/2009

p1 = Image.load("Escape the Car\\1.png")
p2 = Image.load("Escape the Car\\2.png")
p3 = Image.load("Escape the Car\\3.png")
p4 = Image.load("Escape the Car\\4.png")
p5 = Image.load("Escape the Car\\15.png")
p6 = Image.load("Escape the Car\\14.png")
p7 = Image.load("Escape the Car\\7.png")
p8 = Image.load("Escape the Car\\17.png")
p9 = Image.load("Escape the Car\\11.png")
p10 = Image.load("Escape the Car\\9.png")

cursor = {x = 50, y = 100, img = Image.load("cursor.png")}
smenu = Image.load("submenu.png")
rmenu = Image.load("menu.png")
qmenu = Image.load("quitmenu.png" )

require("colors")

currentFrame = 0 -- Sets Up Frame Skip
frameSkip = 1 -- How Many Frames To Skip

submenu = 0
menu = 0
quit = 0
currentpic = 1
checkpad = Controls.read()


function Frame()
if currentFrame >= frameSkip then
currentFrame = 0
end
currentFrame = currentFrame + 1;
end

function analog()
deadzone = 30
sensitivity = 40
anx = pad:analogX()
any = pad:analogY()
if math.abs(anx) > deadzone then
cursor.x = cursor.x + anx/sensitivity
end
if math.abs(any) > deadzone then
cursor.y = cursor.y + any/sensitivity
end
if cursor.x <= 0 then
cursor.x = 0
end
if cursor.y <= 0 then
cursor.y = 0
end
if cursor.x >= 480 then
cursor.x = 480
end
if cursor.y >= 272 then
cursor.y = 272
end
if currentFrame == frameSkip then
screen:blit(cursor.x, cursor.y, cursor.img)
end
end

function paste()
if currentFrame == frameSkip then
if currentpic == 1 then
screen:blit(0,0, p1)
end
if currentpic == 2 then
screen:blit(0,0, p2)
end
if currentpic == 3 then
screen:blit(0,0, p3)
end
if currentpic == 4 then
screen:blit(0,0, p4)
end
if currentpic == 5 then
screen:blit(0,0, p5)
end
if currentpic == 6 then
screen:blit(0,0, p6)
end
if currentpic == 7 then
screen:blit(0,0, p7)
end
if currentpic == 8 then
screen:blit(0,0, p8)
end
if currentpic == 9 then
screen:blit(0,0, p9)
end
if currentpic == 10 then
screen:blit(0,0, p10)
end

end -- Frame Skip

if menu == 0 and quit == 0 then
if currentpic == 1 then
if pad:left() and checkpad:left() ~= pad:left() and not pad:select() then
currentpic = 2
end
if pad:right() and checkpad:right() ~= pad:right() and not pad:select() then
currentpic = 3
end
end
if currentpic == 2 then
if pad:right() and checkpad:right() ~= pad:right() and not pad:select() then
currentpic = 1
end
if pad:left() and checkpad:left() ~= pad:left() and not pad:select() then
currentpic = 4
end
end
if currentpic == 3 then
if pad:left() and checkpad:left() ~= pad:left() and not pad:select() then
currentpic = 1
end
if pad:right() and checkpad:right() ~= pad:right() and not pad:select() then
currentpic = 4
end
end
if currentpic == 4 then
if pad:left() and checkpad:left() ~= pad:left() and not pad:select() then
currentpic = 3
end
if pad:right() and checkpad:right() ~= pad:right() and not pad:select() then
currentpic = 2
end
end

if pad:square() then
currentpic = 4
end

if currentpic == 5 then
if pad:right() and checkpad:right() ~= pad:right() and not pad:select() then
currentpic = 1
end
if pad:left() and checkpad:left() ~= pad:left() and not pad:select() then
currentpic = 1
end
if pad:up() and checkpad:up() ~= pad:up() and not pad:select() then
currentpic = 1
end
if pad:down() and checkpad:down() ~= pad:down() and not pad:select() then
currentpic = 1
end
end

if currentpic == 6 then
if pad:right() and checkpad:right() ~= pad:right() and not pad:select() then
currentpic = 1
end
if pad:left() and checkpad:left() ~= pad:left() and not pad:select() then
currentpic = 1
end
if pad:up() and checkpad:up() ~= pad:up() and not pad:select() then
currentpic = 1
end
if pad:down() and checkpad:down() ~= pad:down() and not pad:select() then
currentpic = 1
end
end

if currentpic == 7 then
if pad:right() and checkpad:right() ~= pad:right() and not pad:select() then
currentpic = 1
end
if pad:left() and checkpad:left() ~= pad:left() and not pad:select() then
currentpic = 1
end
if pad:up() and checkpad:up() ~= pad:up() and not pad:select() then
currentpic = 1
end
if pad:down() and checkpad:down() ~= pad:down() and not pad:select() then
currentpic = 1
end
end

if currentpic == 8 then
if pad:right() and checkpad:right() ~= pad:right() and not pad:select() then
currentpic = 1
end
if pad:left() and checkpad:left() ~= pad:left() and not pad:select() then
currentpic = 1
end
if pad:up() and checkpad:up() ~= pad:up() and not pad:select() then
currentpic = 1
end
if pad:down() and checkpad:down() ~= pad:down() and not pad:select() then
currentpic = 1
end
end

if currentpic == 9 then
if pad:right() and checkpad:right() ~= pad:right() and not pad:select() then
currentpic = 4
end
if pad:left() and checkpad:left() ~= pad:left() and not pad:select() then
currentpic = 4
end
if pad:up() and checkpad:up() ~= pad:up() and not pad:select() then
currentpic = 4
end
if pad:down() and checkpad:down() ~= pad:down() and not pad:select() then
currentpic = 4
end
end

if currentpic == 10 then
if pad:right() and checkpad:right() ~= pad:right() and not pad:select() then
currentpic = 4
end
if pad:left() and checkpad:left() ~= pad:left() and not pad:select() then
currentpic = 4
end
if pad:up() and checkpad:up() ~= pad:up() and not pad:select() then
currentpic = 4
end
if pad:down() and checkpad:down() ~= pad:down() and not pad:select() then
currentpic = 4
end
end

end
end

function menuSystem()
if currentFrame == frameSkip then
-- Main Menu
if menu == 1 then
screen:blit(0,0, rmenu)
if pad:circle() then
menu = 0
end
end
-- Submenu
if submenu == 1 then
screen:blit(0,176, smenu)
if pad:circle() then
submenu = 0
end
end
-- Quit Menu
if quit == 1 then
screen:blit(0,0, qmenu)
if pad:circle() then
quit = 0
end
if pad:triangle() and checkpad:triangle() ~= pad:triangle() then
System.quit()
end
end

end -- Frame Skip

-- Buttons
if pad:l() or pad:r() and menu ~= 1 then
submenu = 1
end
if pad:start() and submenu ~= 1 then
menu = 1
end
if pad:triangle() then
quit = 1
end
end

function hittesting()
-- First Frame
if currentpic == 1 then
-- Dashboard Compartment
if cursor.x >= 315 and cursor.x <= 460 and cursor.y >= 140 and cursor.y <= 194 then
if pad:cross() then
currentpic = 5
end
end
-- Pedals/Under Stering Wheel
if cursor.x >= 45 and cursor.x <= 160 and cursor.y >= 200 and cursor.y <= 235 then
if pad:cross() then
currentpic = 6
end
end
-- Box Behind the Gears
if cursor.x >= 201 and cursor.x <= 288 and cursor.y >= 245 and cursor.y <= 272 then
if pad:cross() then
currentpic = 7
end
end
-- Dashboard
if cursor.x >= 80 and cursor.x <= 148.1 and cursor.y >= 145 and cursor.y <= 169 then
if pad:cross() then
currentpic = 8
end
end
end-- First Frame

-- Fourth Frame
if currentpic == 4 then
--Ground
if cursor.x >= 15 and cursor.x <= 475 and cursor.y >= 258 and cursor.y <= 272 then
if pad:cross() then
currentpic = 9
end
end
-- Box 2
if cursor.x >= 215 and cursor.x <= 269 and cursor.y >= 251 and cursor.y <= 255 then
if pad:cross() then
currentpic = 10
end
end

end -- Fourth Frame
end

function debuger()
screenrint(0,10, "Cursor.X = "..cursor.x, red)
screenrint(0,20, "Cursor.Y = "..cursor.y, red)
if pad:left() and pad:select() then
cursor.x = cursor.x - .1
end
if pad:right() and pad:select() then
cursor.x = cursor.x + .1
end
if pad:down() and pad:select() then
cursor.y = cursor.y + .1
end
if pad:up() and pad:select() then
cursor.y = cursor.y - .1
end
end

while true do
pad = Controls.read()
Frame()
System.startGu()
paste()
menuSystem()
analog()
hittesting()
debuger()
System.endGu()
screen.flip()
System.showFPS()
checkpad = pad
end