Lua Programming Help Thread

SG57
Now what could it be wrong this time ? Lua player load my index with out any error but with the eboot and changing system.lua to load mine it gives error, it dosent load my index but it dose load airhockey index
i added the luasplash and and comp.wav to my index it loads but when its time to load the program it gives error ???? and with luaplayer it dosent ?????? am i missing a code?

Hey what does this error mean?

Code:

---

stack overflow

---

hey guys,

what im trying to do is create a moving allow/launcher for a homebrew game.

i loaded the image, then i want it to move to the left when you press up.
so this is the code i used

Code:

---


--[[
launcher  loaded in default position)
]]

screen:blit(20,98,launcher7)
screen:flip()

pad = Controls.read()

if pad:cross() then break end
end

if pad:up() then
launcher7.clear()
screen:blit(20,98,launcher6)
screen:flip()

---

the problem i have is when you press up - the original launcher/arrow doesnt clear - so you cant see the second launcher (which is slightly aimed more towards the left)

can anyone help me with this
or
is there an easier way of moving the laucher/arrow

thanks for all your help

RL

{Edit}

so now i got it to do something - by moving the "end" after
if pad:cross() then break end
but i get the error

Zitat:

---

image:clear([color]) zero or one arguement

---

Zitat:

---

Zitat von montrob

Hey what does this error mean?

Code:

---

stack overflow

---

---

I think it means something could not be found like a file maybe? But i'm only guessing here!

aaaa donno what is wrong but i m rebuiding the paint program again
learning this things is almost making me downgrade again >.< and i dont feal comfortable doing it =/

Zitat:

---

Zitat von Raven_lif

hey guys,

what im trying to do is create a moving allow/launcher for a homebrew game.

i loaded the image, then i want it to move to the left when you press up.
so this is the code i used

Code:

---


--[[
launcher  loaded in default position)
]]

screen:blit(20,98,launcher7)
screen:flip()

pad = Controls.read()

if pad:cross() then break end
end

if pad:up() then
launcher7.clear()
screen:blit(20,98,launcher6)
screen:flip()

---

the problem i have is when you press up - the original launcher/arrow doesnt clear - so you cant see the second launcher (which is slightly aimed more towards the left)

can anyone help me with this
or
is there an easier way of moving the laucher/arrow

thanks for all your help

RL

{Edit}

so now i got it to do something - by moving the "end" after
if pad:cross() then break end
but i get the error

---

You have described launcher6 and 7 haven't you, it's just it doesn't say it there.oh, is that the image, i guess it is.
How about adding waitVblankstart() or something?

Zitat:

---

Zitat von Raven_lif

hey guys,

what im trying to do is create a moving allow/launcher for a homebrew game.

i loaded the image, then i want it to move to the left when you press up.
so this is the code i used

Code:

---


--[[
launcher  loaded in default position)
]]

screen:blit(20,98,launcher7)
screen:flip()

pad = Controls.read()

if pad:cross() then break end
end

if pad:up() then
launcher7.clear()
screen:blit(20,98,launcher6)
screen:flip()

---

the problem i have is when you press up - the original launcher/arrow doesnt clear - so you cant see the second launcher (which is slightly aimed more towards the left)

can anyone help me with this
or
is there an easier way of moving the laucher/arrow

thanks for all your help

RL

{Edit}

so now i got it to do something - by moving the "end" after
if pad:cross() then break end
but i get the error

---

are u even ALLOWED to do launch7.claer()??

Code:

---

usbin = System.usbDiskModeActivate

while true do
screen:clear()
pad = Controls.read()

if pad:l() then usbin = true
end

if pad:select() then
break
end

screen.flip()
screen.waitVblankStart()
end

---

this is just an example. there are more codes in
Guys i put into the script. but usb dosnt show up. how can I make it work ?
( i have firmware 2.0 though)

yes i defined launcher6 and 7 amognst others

ill try
waitVblankstart()
but doesnt that make the screen pause?

Zitat:

---

are u even ALLOWED to do launch7.claer()??

---

well i assume so - its just a code to clear the image isn't it? launch7 being the image

but anyway it doesnt work - because it just dies and gives the error i mentioned

Zitat:

---

Zitat von PSPduh

Hello all, can someone help me with this code? For some reason, when I try to run it on the PC, it creates a luaplayer.exe.stackdump file. The code:

Code:

---



red=Color.new(255,0,0)
green=Color.new(0,255,0)
blue=Color.new(0,0,255)
white=Color.new(255,255,255)

duh=Image.load("duh.png")
counter=Timer.new()
counter:start()
screen:blit(50,50,"duh.png")
while true do
pad=Controls.read()

if pad:up() then
duh.y=duh.y + 2
end

if pad:down() then
duh.y=duh.y - 2
end

if pad:right() then
duh.x=duh.x + 2
end

if pad:left() then
duh.x=duh.x - 2
end

currentTime=counter:time()
screen:clear(blue)
screen:print(10,10,"Counter Time: " .. currentTime, white)

if currentTime > 2500 and currentTime < 5000 then
screen:clear(red)
end

if currentTime > 5001 then
counter:reset(0)
counter:start()
end

screen.waitVblankStart()
screen.flip()
end

---

When the stackdump is opened with notepad, its:

Code:

---


Stack trace:
Frame    Function  Args
  49774 [sig] luaplayer 2112 handle_threadlist_exception: handle_threadlist_exception called with threadlist_ix -1
  75965 [sig] luaplayer 2112 handle_exceptions: Exception: STATUS_ACCESS_VIOLATION
Exception: STATUS_ACCESS_VIOLATION at eip=61015E82
eax=7C802542 ebx=610E7ECC ecx=00000000 edx=0000001B esi=00000000 edi=00000001
ebp=00A2E6E8 esp=00A2E6E4 program=C:\Documents and Settings\FattyMcFat\Desktop\luaplayerwindows\luaplayer.exe, pid 2112, thread sig
cs=001B ds=0023 es=0023 fs=003B gs=0000 ss=0023
Stack trace:
Frame    Function  Args
00A2E6E8  61015E82  (610E7ECC, 0022E598, 00000001, 00000000)
00A2E708  61015FAC  (00000001, 00A2E760, 00000000, 00000000)
00A2EA58  610179AB  (000006F4, 00A2EED0, 000000A4, 00A2EE9C)
00A2EF98  6108A497  (610E6D18, 00000000, 00000F84, 00000000)
00A2EFC8  6100327F  (610E6D18, 00A2F000, 61003160, 00000000)
00A2EFF8  61003E94  (00000000, 00000000, 00000000, 00000000)
00A2FF98  61003EDA  (00000000, 00000000, 00000000, 00000000)
End of stack trace

---

Can someone help? And thanks in advance!

---

You need spaces between the "=" signs for all variables.

example

What you have:
black=Color.new(0, 0, 0)

Should be:
black = Color.new(0, 0, 0) <--space out the words from the equal (=) sign.