Lua Programming Help Thread

[natan333]

>.< , it freezes at checking your connecting

[Altair]

I am having trouble with this code. I get the error: index.lua 28 'then' expected near '='. :Argh: :Argh: :Argh: The code:

red = Color.new(255,0,0)
yellow = Color.new(255, 255, 0)
blue = Color.new(0, 0, 255)
orange = Color.new(223, 88, 6)
grey = Color.new(94, 97, 111)
black = Color.new(0, 0, 0)
white = Color.new(255, 255, 255)
green = Color.new(0,255,0)

duh = Timer.new()
duh2 = duh:time()
x = 470
y = 0
duh:start()

man = Image.load("man.png")

while true do
screen:clear(white)

if duh2 >= 470 then
screen:blit(470,0,man)
end

screen:blit(x,y,man)

for i = 1, 470 do
if duh2 == i * 1 then
man.x = man.x + 1
end

screen.waitVblankStart()
screen.flip()
end

The line that is bolded is line 28.

This should work. If you check if two things are equal, you have to use "==" not "=".

[natan333]

yeah, i got this Audacity audio recorder, its really cool, you can edit and take out some audio you dont want =P

[SG57]

hey quyick informational answer...

Does netlib atually create an array/sturcture of the Connection Info meaning like it will give you the IP Address of the Connection Name and the DNS and Subnet Mask adn such?

Also, i doubt this but can netlib 'create' connections? like add 1 to the connections info integer and create the connection?

Basically, does the NETLIB connection function return the connection info? If so, is creating a connection possible if you add 1 to the connections array/structure

Im guessing NO because the LuaPlayer source may not have added WLAN Connetions Manipulatyion :-(

[natan333]

guys, a simple question:


is there a max of duped pictures in luaplayer v16 ?
becuase i m in an amount that it lags the player1 movement if i put 1 more picture and i need to add alot more to finish the game

[Altair]

hey quyick informational answer...

Does netlib atually create an array/sturcture of the Connection Info meaning like it will give you the IP Address of the Connection Name and the DNS and Subnet Mask adn such?

Also, i doubt this but can netlib 'create' connections? like add 1 to the connections info integer and create the connection?

Basically, does the NETLIB connection function return the connection info? If so, is creating a connection possible if you add 1 to the connections array/structure

Im guessing NO because the LuaPlayer source may not have added WLAN Connetions Manipulatyion :-(

First thing Im not sure. I never tried, I just used what the wlan example in LUAplayer used. Maybe you could make it print all that it returns?

NETLIB cant create any connections. Im not sure if LUA can, but i dont think so.

[Grimfate126]

guys, a simple question:


is there a max of duped pictures in luaplayer v16 ?
becuase i m in an amount that it lags the player1 movement if i put 1 more picture and i need to add alot more to finish the game

post your player moving code, ther is something probably wrong with it. you can load a LOT of images, about 24mb i think, but im not 100% sure.

[natan333]

post your player moving code, ther is something probably wrong with it. you can load a LOT of images, about 24mb i think, but im not 100% sure.

if pad:up() and moving1 == true then
move:start()
screen:clear(white)
y0 = y0 - 2
screen:blit(x0, y0, up1)
end

if pad:up() and moving1 == true and move:time() > 0 then
screen:clear(white)
screen:blit(x0, y0, up2)
end

if pad:up() and moving1 == true and move:time() > 150 then
screen:clear(white)
screen:blit(x0, y0, up1)
end

if pad:up() and moving1 == true and move:time() > 300 then
move:reset()
end

This is when its going up


~EDIT~ I toke off the top screen:clear from the code above, it fixes but picture dosent look right

if pad:up() and move:start() and moving1 == true then
screen:clear(white)
y0 = y0 - 2
screen:blit(x0, y0, up2)
end

if pad:up() and moving1 == true and move:time() > 150 then
screen:clear(white)
screen:blit(x0, y0, up1)
end

if pad:up() and moving1 == true and move:time() > 300 then
move:reset()
end

ok this is working better, but i wanna see if its going to lag again

[PSPduh]

I need some more help here. Now I try this code:

red = Color.new(255,0,0)
yellow = Color.new(255, 255, 0)
blue = Color.new(0, 0, 255)
orange = Color.new(223, 88, 6)
grey = Color.new(94, 97, 111)
black = Color.new(0, 0, 0)
white = Color.new(255, 255, 255)
green = Color.new(0,255,0)

duh = Timer.new()
duh2 = duh:time()
x = 39
y =41
duh:start()

man = Image.load("man.png")

while true do
screen:clear(white)

if duh2 >= 470 then
screen:blit(39,41,man)
end

screen:blit(x,y,man)

for i = 1, 470 do
if duh2 == i * 1 then
man.x = man.x + 1
end
end

screen.waitVblankStart()
screen.flip()
end

It gives a luaplayer.exe.stackdump file. And in that file is:

Stack trace:
Frame     Function  Args
  57363 [sig] luaplayer 3364 handle_threadlist_exception: handle_threadlist_exception called with threadlist_ix -1
  65521 [sig] luaplayer 3364 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\luaplayer.exe, pid 3364, 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

Grrrr...If this code would work, I could make a game or two. Thank you for your help. :)

[Tiboric]

Quick Question... How can i make screenprint text ect rotait to a certain angle, say 180o so it wounld print up side down or 90o so it prints to the right?

i'm stuck on this one :icon_sad:

anybody got the knoledge.

[EminentJonFrost]

Quick Question... How can i make screenprint text ect rotait to a certain angle, say 180o so it wounld print up side down or 90o so it prints to the right?

i'm stuck on this one :icon_sad:

anybody got the knoledge.

This is a copy and paste from the "rotate" example in the new Luaplayer. (which is version 0.19)

I'm learning this myself so I cant explain it to you, but I thought it'd be helpful to you (and others learning the same thing) if I posted it.

function rotate(image)
	local w = image:width()
	local h = image:height()
	local result = Image.createEmpty(h, w)
	for x=0,w-1 do
		for y=0,h-1 do
			result:pixel(h-y-1, x, image:pixel(x, y))
		end
	end
	return result
end

function printRotated(x, y, text, color, image, rotateIndex)
	rotateIndex = math.mod(rotateIndex, 4)
	local w = string.len(text)
	local result = Image.createEmpty(w * 8, 8)
	result:print(0, 0, text, color)
	if rotateIndex > 0 then
		rotateIndex = rotateIndex - 1
		for i=0,rotateIndex do
			result = rotate(result)
		end
	end
	image:blit(x, y, result)
end

cadetBlue = Color.new(95, 158, 160)

printRotated(132, 0, "Don't ask what Lua Player", cadetBlue, screen, 0)
printRotated(472, 76, "can do for you,", cadetBlue, screen, 1)
printRotated(160, 264, "ask what you can do", cadetBlue, screen, 2)
printRotated(0, 76, "for Lua Player!", cadetBlue, screen, 3)
screen.flip()
while true do
	screen.waitVblankStart()
end

[natan333]

guys. i have this question that it will be easier if it works

i have a

blockx1 = 0
blocky1 = 0

all the way to

blockx62 = 16
blocky62 = 480

(the values are different though)

and a

screen:blit(blockx1, blocky1, block)

all the way to

screen:blit(blockx62, blocky62, block)

.
Is it possible to make them all move in the same speed with only 1 code like

 blankx1 = blankx1 + 2

or

 blanky1 = blanky1 + 2

?

[Grimfate126]

guys. i have this question that it will be easier if it works

i have a

blockx1 = 0
blocky1 = 0

all the way to

blockx62 = 16
blocky62 = 480

(the values are different though)

and a

screen:blit(blockx1, blocky1, block)

all the way to

screen:blit(blockx62, blocky62, block)

.
Is it possible to make them all move in the same speed with only 1 code like

 blankx1 = blankx1 + 2

or

 blanky1 = blanky1 + 2

?

it would be easier to make an array:

block = {}

block[1] = { x = 0, y = 0 )
....all the way to 62

then to blit all the blocks in THREE lines of code, do this:

for a = 1, 62 do
screen:blit(block[a].x, block[a].y, block)
end

now for the moving part:

for b = 1, 62 do

block[b].x = block[b].x + 2

-- or if you want the y to move:

block[b].y = block[b].y + 2

--or if you want both x and y to move:

block[b].x = block[b].x + 2
block[b].y = block[b].y + 2

end

hope i helped!

[natan333]

thx, i think it will help alot

but wait.
in
"block[1] = { x = 0, y = 0 )"

wich one is the right one? the { or the ( so i dont have edit all over again

[TheMarioKarters]

thx, i think it will help alot

but wait.
in
"block[1] = { x = 0, y = 0 )"

wich one is the right one? the { or the ( so i dont have edit all over again

The {

[PSPHax0r9]

{

is the correct one.

EDIT: Nice edit, TMK. I caught you....

[Grimfate126]

thx, i think it will help alot

but wait.
in
"block[1] = { x = 0, y = 0 )"

wich one is the right one? the { or the ( so i dont have edit all over again

yea, its { , i made a typo. also, if you are making you x and y values random, like:

block[1] = { x = math.random(100), y = math.random(100) }

then you can also do:

for c = 1, 62 do
block[c] = { x = math.random(100), y = math.random(100) } 
end

so you wont have to make a huge list.

[natan333]

thx guys =P

the random is sweet, i will use it later =P

is there another code instead of

for c = 1, 62 do
block[c] = { x = math.random(480), y = 0 } 
end

to add 16 pixels after each pixel

example:
block[1] = { x = 0, y = 0 }
block[2] = { x = 16, y = 0 }
block[3] = { x = 32, y = 0 }
block[4] = { x = 48, y = 0 }

and so on?

[EminentJonFrost]

for c = 1, 62 do
block[c] = { x = x + 16, y = y + 16 } 
end

[natan333]

for c = 1, 62 do
block[c] = { x = x + 16, y = y + 16 } 
end

that gave me error :icon_sad:

[EminentJonFrost]

for c = 1, 62 do
block[c].x = block[c].x + 16
block[c].y = block[c].y + 16
end

my bad, try that.

[natan333]

still error hmm

[EminentJonFrost]

whats the error?

[Grimfate126]

thx guys =P

the random is sweet, i will use it later =P

is there another code instead of

for c = 1, 62 do
block[c] = { x = math.random(480), y = 0 } 
end

to add 16 pixels after each pixel

example:
block[1] = { x = 0, y = 0 }
block[2] = { x = 16, y = 0 }
block[3] = { x = 32, y = 0 }
block[4] = { x = 48, y = 0 }

and so on?

try this:

block = {}

block[1] = { x = 0, y = 0 }

for d = 2, 62 do
block[d] = { x = block[d-1].x + 16, y = 0 }
end

that SHOULD work.

[Grimfate126]

whats the error?

the problem was that you said to get just "x". there is no value as "x", only as

block[1-62].x

P.S. sry for double post

[natan333]

Thx so much Grimfate126 :Jump:

[natan333]

need help in this one

I toke some time to find out how to make the picture "blockk" block all sides when player1 tryes to get in but now i tested it, only 1 block works, the others blocks dosent block "player1" so it pass through block[1] and [2] but not [3]

block = {}
block[1] = { x = 32 , y = 32 } 
block[2] = { x = 64 , y = 100 } 
block[3] = { x = 100 , y = 130 } 

it works only with the last block

while true do

blahblahblah and blahblahblah 


for c = 1, 3 do
screen:blit(block[c].x, block[c].y, blockk)

if x0 >= block[c].x-13 and x0 <= block[c].x+15 and y0 >= block[c].y-16 and y0 <= block[c].y and bug11 == true then
moving2 = false
moving1 = true
end


if x0 >= block[c].x-13 and x0 <= block[c].x+15 and y0 >= block[c].y and y0 <= block[c].y+16 and bug22 == true then
moving1 = false
moving2 = true
end


if x0 >= block[c].x and x0 <= block[c].x+16 and y0 >= block[c].y-15 and y0 <= block[c].y+15 and bug33 == true then
moving3 = false
moving4 = true
end


if x0 >= block[c].x-15 and x0 <= block[c].x and y0 >= block[c].y-15 and y0 <= block[c].y+15 and bug44 == true then
moving4 = false
moving3 = true
end

-------------->Buggykiller
if moving1 == false and x0 >= block[c].x+16 then
moving1 = true
end

if moving1 == false and x0+16 <= block[c].x then
moving1 = true
end

if moving2 == false and x0 >= block[c].x+16 then
moving2 = true
end

if moving2 == false and x0+16 <= block[c].x then
moving2 = true
end
--
if moving3 == false and y0 >= block[c].y+16 then
moving3 = true
end


if moving3 == false and y0+16 <= block[c].y then
moving3 = true
end


if moving4 == false and y0 >= block[c].y+16 then
moving4 = true
end


if moving4 == false and y0+16 <= block[c].y then
moving4 = true
end
end

payattention bellow while true do and above buggy killer, becuase that is what makes picture player1 stop when it tries to get inside block picture.
how can i make it to work with block[1] and block[2]?

[SG57]

if i really understood your quetion/problem then i could help lol... I just say use collision, not the whole X and Y co-ordinate checking adn booling...

[Grimfate126]

need help in this one

I toke some time to find out how to make the picture "blockk" block all sides when player1 tryes to get in but now i tested it, only 1 block works, the others blocks dosent block "player1" so it pass through block[1] and [2] but not [3]

block = {}
block[1] = { x = 32 , y = 32 } 
block[2] = { x = 64 , y = 100 } 
block[3] = { x = 100 , y = 130 } 

it works only with the last block

while true do

blahblahblah and blahblahblah 


for c = 1, 3 do
screen:blit(block[c].x, block[c].y, blockk)

if x0 >= block[c].x-13 and x0 <= block[c].x+15 and y0 >= block[c].y-16 and y0 <= block[c].y and bug11 == true then
moving2 = false
moving1 = true
end


if x0 >= block[c].x-13 and x0 <= block[c].x+15 and y0 >= block[c].y and y0 <= block[c].y+16 and bug22 == true then
moving1 = false
moving2 = true
end


if x0 >= block[c].x and x0 <= block[c].x+16 and y0 >= block[c].y-15 and y0 <= block[c].y+15 and bug33 == true then
moving3 = false
moving4 = true
end


if x0 >= block[c].x-15 and x0 <= block[c].x and y0 >= block[c].y-15 and y0 <= block[c].y+15 and bug44 == true then
moving4 = false
moving3 = true
end

-------------->Buggykiller
if moving1 == false and x0 >= block[c].x+16 then
moving1 = true
end

if moving1 == false and x0+16 <= block[c].x then
moving1 = true
end

if moving2 == false and x0 >= block[c].x+16 then
moving2 = true
end

if moving2 == false and x0+16 <= block[c].x then
moving2 = true
end
--
if moving3 == false and y0 >= block[c].y+16 then
moving3 = true
end


if moving3 == false and y0+16 <= block[c].y then
moving3 = true
end


if moving4 == false and y0 >= block[c].y+16 then
moving4 = true
end


if moving4 == false and y0+16 <= block[c].y then
moving4 = true
end
end

payattention bellow while true do and above buggy killer, becuase that is what makes picture player1 stop when it tries to get inside block picture.
how can i make it to work with block[1] and block[2]?

umm.. say WHAT??

[natan333]

ok i think this better.

is the block picture and its named blockk.
there is moving picture called "player1" somewhere and it have moving1 == true (to go up), moving2 == true (go down) , moving3 == true (go left) and moving4 == true (go right) like

if pad:up() and move:start() and moving1 == true then
screen:clear(white)
y0 = y0 - 2
screen:blit(x0, y0, up2)
end

if pad:up() and moving1 == true and move:time() > 150 then
screen:clear(white)
screen:blit(x0, y0, up1)
end

if pad:up() and moving1 == true and move:time() > 300 then
move:reset()
end

is one of them

so this code bellow tells one of the moving1-4 to be false if the moving "player1" tries to go through the block picture
from above, bellow and sides

for c = 1, 3 do
screen:blit(block[c].x, block[c].y, blockk)

if x0 >= block[c].x-13 and x0 <= block[c].x+15 and y0 >= block[c].y-16 and y0 <= block[c].y and bug11 == true then
moving2 = false
moving1 = true
end


if x0 >= block[c].x-13 and x0 <= block[c].x+15 and y0 >= block[c].y and y0 <= block[c].y+16 and bug22 == true then
moving1 = false
moving2 = true
end


if x0 >= block[c].x and x0 <= block[c].x+16 and y0 >= block[c].y-15 and y0 <= block[c].y+15 and bug33 == true then
moving3 = false
moving4 = true
end


if x0 >= block[c].x-15 and x0 <= block[c].x and y0 >= block[c].y-15 and y0 <= block[c].y+15 and bug44 == true then
moving4 = false
moving3 = true
end
end

like, the block[c] is added becuase later, the game will move them all atomatically

the code above works great but the problem, it only worked for block[3] but not block[1] and block[2]