Lua Programming Help Thread

[HomebrewModder]

I am making a lua game (card game uno) and i need help the whole way i will give credit to anyone who helps me. if it is easier i can get help through pm. this topic is crowded. so can anyone help me along the way. question 1. what do i do first?

[TurtlesPwn]

First, you stop using an obnoxious font. Second, you go find some basic tutorials, documentation, and reference. Third, you make your game. Simple.

[xXChromeXx]

TurtlesPwn: I would have thought You would have snapped

But seriously do it yourself, because its alot more rewarding and you learn better.

[SG57]

t = 0
while true do
  screen:clear()
  for i = 33, 127 do
    screen:print(math.random(0,480),math.random(0,272),string.char(i),Color.new(math.random(0,255),math.random(0,255),math.random(0,255)))
  end
  screen:print(math.sin((math.atan(1) * 4) * 2 / 360 * (t*2)) * 150 + 192.5,math.cos((math.atan(1) * 4) * 2 / 360 * t) * 100 + 131,string.char(71,84,70,79,32,32,78,79,79,66,33,33),Color.new(255,255,255))
  screen.waitVblankStart()
  screen.flip()
  t = t + 1
end

That'll tell you how to do it HomebrewModder.

[wicked_fable]

t = 0
while true do
  screen:clear()
  for i = 33, 127 do
    screen:print(math.random(0,480),math.random(0,272),string.char(i),Color.new(math.random(0,255),math.random(0,255),math.random(0,255)))
  end
  screen:print(math.sin((math.atan(1) * 4) * 2 / 360 * (t*2)) * 150 + 192.5,math.cos((math.atan(1) * 4) * 2 / 360 * t) * 100 + 131,string.char(71,84,70,79,32,32,78,79,79,66,33,33),Color.new(255,255,255))
  screen.waitVblankStart()
  screen.flip()
  t = t + 1
end

That'll tell you how to do it HomebrewModder.

Wow, a magical bit of code that solves all my problems. Give me some more of that stuff.

[TurtlesPwn]

If I'm remembering my ASCII table correctly, what SG57 is trying to say is please leave, newbie. GTFO NOOB!!

[SG57]

In a nicer fashion Turtles ;)

I'm surprised you haven't gone off on an insulting obfuscated code rampage to release your stress :) You should try it ;)

[TurtlesPwn]

Knowing my luck, someone would convert it to plain english and not be discrete about it. It's easier to just get mad in plain english.

[wicked_fable]

Can we use this more often? I like it.

[xXChromeXx]

Can I crop images before I blit them and save them to a variable, or would I have to crop them during bliting. I am using a sprite sheet.

[yaustar]

You can do either. Personally, I prefer the latter.

[xXChromeXx]

Thanks. I just figured it would be easier to animate with them already in variables as I would only have to change the Player.img

[wicked_fable]

Having a problem loading sounds. I removed the sounds completely from the script and it loaded perfectly. I do not have the location wrong at all and cannot think for the life of me must be wrong with it. I have tried this before and they worked perfectly but after I reorganized my project files and decided to test out my project it didn't work.

opening = Sound.load ("Resources/Intro/Opening.wav")
opening1 = Sound.load ("Resources/Intro/Opening1.wav")
opening2 = Sound.load ("Resources/Intro/Opening2.wav")
opening3 = Sound.load ("Resources/Intro/Opening3.wav")

And here is the error I get:

Error: SCRIPT.LUA:10: error loading sound

Line 10 is where my code for loading the sounds starts. Can anyone think of why this is not working? I am trying to get my project down but little things like these keep stunting my progress.

Thanks,
-Daniel

[Insert_Witty_Name]

Lua Player only supports 16-bit mono WAV files.

Ensure yours match this format.

[wicked_fable]

Lua Player only supports 16-bit mono WAV files.

Ensure yours match this format.

Yes, it does, plus there is the fact that it worked before. Does this mean it is a problem with the code I am using? I am on LPHM6.6 and I have used it before to launch the same program. The only thing different I did was move everything to its own folder, hence the "Resources/Intro" location.

[Insert_Witty_Name]

Ensure the path you're using is correct.

It could be a possible bug with LPHM.

[wicked_fable]

Heh, no need. I talked to Homemister about it and he fixed a bug that made that happen. Thanks for your help too IWN.

[SG57]

Kinda ironic there huh? :P (person who made a better lua interpreter correcting an old one)

[Zavoira]

Spoiler for Animation Code:

left = Image.load("left.png")
left2 = Image.load("left2.png")
left3 = Image.load("left3.png")
left4 = Image.load("left4.png")
left5 = Image.load("left5.png")
left6 = Image.load("left6.png")
left7 = Image.load("left7.png")
left8 = Image.load("left8.png")
right = Image.load("right.png")
right2 = Image.load("right2.png")
right3 = Image.load("right3.png")
right4 = Image.load("right4.png")
right5 = Image.load("right5.png")
right6 = Image.load("right6.png")
right7 = Image.load("right7.png")
right8 = Image.load("right8.png")
standright = Image.load("standright.pn g")

player = {}
player.x = 20
player.y = 200
player.img = standright

Timer = Timer + 1

function moveleft()


if Timer>= 41 or Timer<=0 then

Timer = 0

end



if Timer==5 then

player.img = left

end



if Timer==10 then

player.img = left2

end



if Timer==15 then

player.img = left3

end



if Timer==20 then

player.img = left4

end


if Timer==25 then

player.img = left5

end

if Timer==30 then

player.img = left6

end

if Timer==35 then

player.img = left7

end

if Timer==40 then

player.img= left8
end

end

function moveright()

Timer = Timer + 1

if Timer>= 41 or Timer<=0 then

Timer = 0

end



if Timer==5 then

player.img = right

end



if Timer==10 then

player.img = right2

end


if Timer==15 then

player.img = right3

end



if Timer==20 then

player.img = right4

end

if Timer==25 then

player.img = right5

end

if Timer==30 then

player.img = right6

end

if Timer==35 then

player.img = right7

end

if Timer==40 then

player.img = right8

end
end

end

while true do ----MAIN LOOP----

oldx = player.x
oldy = player.y


screen:clear()


pad = Controls.read()


if pad:left() and player.x > 0 then
moveleft()
player.x = player.x - 4
end



if pad:right() and player.x < 480 then
moveright()
player.x = player.x + 4
end

screen:blit(player.x, player.y, player.img)

screen.flip()
oldpad = pad
screen.waitVblankStart()
end

I get an error that says, : Error: index.lua:159: '<eof>' expected near 'end'

Can anybody help me out?

[_dysfunctional]

It's a syntax error. If you honestly can't figure out the errors, I have a few suggestions.

1. Don't ask us to find it for you.
2. Read http://www.lua.org/pil/
3. Pay attention on the sections about Tables.

I suggest you read PIL in it's entirety before continuing on any game you are working on.

Please, take advice from those who are more experienced than yourself.

Additionally, learn to indent your code, so that it is easier to read. It will only benefit yourself.

-- Global scope, no indenting
function SomeFunction(a, b)
    -- Indent, new scope
    if a == b then
        -- Indent, new scope
        return 1
    end

    -- Same scope, indent only once
    return 0
end

[wicked_fable]

Kinda ironic there huh? :P (person who made a better lua interpreter correcting an old one)

Oh, lol. Well it really is just because of the specific situation I'm in. He is helping me translate my project to be compatible with LPHMv2 but meanwhile I am still working on it so I am still coding in a LuaPlayer HM 6.6 and below compatible way as I am still getting the hang of LPHMv2(shouldn't be too hard but I am trying to get my project done first before anything else). So that's why I would need a fix for HM 6.6 because my project isn't fully compatible with LPHMv2 yet.

[energytr]

hi guys im newbie at lua programming so
im tried and done smth but i wanna do Ai matrix code rain?(binary)

just a simple 101001010101 randomized code rain with lua
just like this


1001010010101111101010100 10010111010
1001010010101111101010100 10010111010
0010110101010110011010001 01000101010
1010010111010101001010010 10101011101
1010111010101101011101011 10101010101
0010110100010101000101011 11011100101
1010000100011110101011101 01110101010

help me pls :)

[_dysfunctional]

1. Go read Programming In Lua (Link) [Yes, all of it]
2. Download PGE Lua (Link)
3. Read the PGE Lua Documentation. (Link)
4. Code it yourself.
5. ???
6. ....

Now, do that, in order, without skipping anything.

[energytr]

thx dude but ive luaplayer and i know basics but i donno how to know that?

[Moose]

thx dude but ive luaplayer and i know basics but i donno how to know that?

Uh, ... what?

[_dysfunctional]

No, you don't know the basics. If you did, you would know where to start.

Now do what I said if you actually want to do this.

[Anti-QuickJay]

1. Go read Programming In Lua (Link) [Yes, all of it]
2. Download PGE Lua (Link)
3. Read the PGE Lua Documentation. (Link)
4. Code it yourself.
5. ???
6. ....

Now, do that, in order, without skipping anything.

lol
You should like post that at the top of every page.

[xXChromeXx]

1. Go read Programming In Lua (Link) [Yes, all of it]
2. Download PGE Lua (Link)
3. Read the PGE Lua Documentation. (Link)
4. Code it yourself.
5. ???
6. ....

Now, do that, in order, without skipping anything.

That would be the greatest signature ive ever seen.

energytr: dysfunctional is right, if you knew the basics then you would realise that what you want to do isn't that hard.

[TurtlesPwn]

Yea, it sure would be.

[xXChromeXx]

Nice signature ^^