Lua Programming Help Thread

[thatoneguy559]

can someone please help me make a file browser for LuaPlayer HMv2?
i've tried a bunch of times but i can't figure out to make it work.
please help

ps. i've already tried the code from evilmana.com codebase and it doesn't work in LuaPlayer HMv2.

[Xteaph-N]

Is the readme wrong then? It explicitly says it returns 1 or 0 which implies an integer, not a boolean which is an important distinction because 'notting' a 0 does not return true (tested on Lua 5.1.2).

foo = 0
if not foo then
    print("blah")
end

Nothing is printed.

As a side note, any non-zero integer in a expression is true but is not equal to the 'value' of true.

foo = -1;
if foo then
    print( "Blah")
end

Output is "Blah".

foo = -1;
if foo == true then
    print( "Blah")
end

Nothing is printed.

As I implied earlier, I wasn't sure how the function eos works under the hood in LuaPlayer and whether it only works if the music has been played at all. (HM really needs a IsPlaying function).

Try the following:

BG1 = Ogg.load("Music.ogg");
Ogg.play(BG1);

while true do	
	if Ogg.eos() == 1 then
		Ogg.play(BG1);
	end
end

Well I could be wrong but I've used Ogg.eos() == true and it's worked the same, so it could be specific to luaplayer. Also I've already tried the method you've provided, it doesn't work.

[yaustar]

Well I could be wrong but I've used Ogg.eos() == true and it's worked the same, so it could be specific to luaplayer.

In Lua, true is equalivent to one and false is equalivent to zero. The point I am making (and you are missing) is that using 1 and 0 with the boolean operator 'not' does not give the same result as using booleans, therefore it is important to know whether a function is returning a boolean or an integer to use it 100% correctly.

Also I've already tried the method you've provided, it doesn't work.

Doesn't work in what way? Does the music play at all? Does it not loop? Did you use the EXACT code?

[Xteaph-N]

In Lua, true is equalivent to one and false is equalivent to zero. The point I am making (and you are missing) is that using 1 and 0 with the boolean operator 'not' does not give the same result as using booleans, therefore it is important to know whether a function is returning a boolean or an integer to use it 100% correctly.


Doesn't work in what way? Does the music play at all? Does it not loop? Did you use the EXACT code?

Yes I used the exact code. It would play one time only.

[yaustar]

So eos doesn't work as advertised? If that is the case then the only real alternative is to either ask the author to fix it, use another LuaPlayer (like PGE) or use a timer and play the music every X seconds where X is the length of the song.

OT: But after reading the readme again, the syntax correct version of the code I used should be:

Ogg.load("Music.ogg");
Ogg.play();

while true do	
	if Ogg.eos() == 1 then
		Ogg.play();
	end
end

Unlikely to make a difference in the behaviour though.

[Xteaph-N]

So eos doesn't work as advertised? If that is the case then the only real alternative is to either ask the author to fix it, use another LuaPlayer (like PGE) or use a timer and play the music every X seconds where X is the length of the song.

OT: But after reading the readme again, the syntax correct version of the code I used should be:

Ogg.load("Music.ogg");
Ogg.play();

while true do	
	if Ogg.eos() == 1 then
		Ogg.play();
	end
end

Unlikely to make a difference in the behaviour though.

Oh no, it works 100% as advertised. The following will work properly:

Ogg.load("Music.ogg");
Ogg.play();

while true do	
	if Ogg.eos() == 1 then
		screen:print(0,0,"Blah",0)
	end
end

This will print text at the end of the song's duration. The problem is in the player itself as I've previously stated. But as also previously stated it is no longer a problem. I also contacted the dev of the player well before I posted in this thread.

[FaT3oYCG]

oh yeah i forgot to mention i havent spoken to hm for a while but there is a problem with the sound functions.

you can only play a sound once and not loop it because they are set up wrong and the system.sound() function or whatever it is that enables some of the other sound functions some do not work and im pretty sure that if you use them they lock up your psp.

if only i would have told you sooner silly me eh.

[qwikrazor87]

oh yeah i forgot to mention i havent spoken to hm for a while but there is a problem with the sound functions.

you can only play a sound once and not loop it because they are set up wrong and the system.sound() function or whatever it is that enables some of the other sound functions some do not work and im pretty sure that if you use them they lock up your psp.

if only i would have told you sooner silly me eh.

you can loop a sound or song with LPHM v2, i've done it many times myself. the reason why you can't get it to loop is because you have to reload the sound/song file before playing it again.

for ex.

if foo.eos() then
foo.load("foo.song")
foo.play()
end

if you want a code that you can use to try for yourself i can give you one. you can loop your sounds and songs. i've done it myself already.

[FaT3oYCG]

i said that you could only play a sound once and not loop it i did not say however that there was no way at all to loop a sound.

[dan369]

10,000th post

[Nielkie]

10,000th post

Dammit.

[FaT3oYCG]

XD i told him to get it for a laf i would have got it myself but you just cant doubble post, look on the bright side you have the 10000th post if you look on the dev forum lol as it doesnt include the posters post XD.

[dan369]

Dammit.

lol, is the now the biggest thread on qj? It must be in the top 3?

[Mraellis]

Lol shall i delete dans post? :P

[FaT3oYCG]

i vote no but your the mod lol.

[Predricted]

Okay I got 2 question,
First Whats the best luaplayer for games,
PGELUA
Luaplayer HM
Luaplayer Euphoria

Second question, I want to add alpha colors to my game does anyone know how to do that?

[dan369]

1. PGE
2. Read PGE's docs, its all there.

[Mraellis]

i vote no but your the mod lol.

I'll be nice. :)

[thatoneguy559]

i need some help please, im trying to make an mp3 player in LuaPlayer HMv2. i've already got the music browser working but when you click a mp3 it freezes. here's my code:

System.currentDirectory(" ms0:/MUSIC")
kristen = Font.load("ms0:/PSP/GAME/Zero+ v1/KristenITC.TTF", 10)
red = Color.new(255, 0, 0, 255)
green = Color.new(0, 255, 0, 255)
blue = Color.new(0, 0, 255, 255)
white = Color.new(255, 255, 255, 255)
black = Color.new(0, 0, 0, 0)

nickname = System.nickName()
battery = System.powerGetBatteryLif ePercent()
life = System.powerGetBatteryLif eTime()
cfw = System.cfwVersion()
year = System.getDate(1)
month = System.getDate(2)
day = System.getDate(3)
hour = System.getTime(1)
minute = System.getTime(2)
second = System.getTime(3)
millisecond = System.getTime(4)
model = System.getModel(1)
volume = System.getVolume()
brightness = System.getBrightness()
mc = {s = 1, fl = System.listDirectory("ms0 :/MUSIC/"), ls = 1, sp = 10}

mc.nf = table.getn(mc.fl)
oldpad = Controls.read()

function runmc()

for i = ((mc.ls-1)*mc.sp)+1, mc.ls*mc.sp do
if mc.nf >= i then
screen.startDraw()
screen.clear(0)
screen.print(5,((i-((mc.ls-1)*mc.sp))*10)-10, mc.fl[i].name, 1, white, white, 1)
screen.print(5,((mc.s-((mc.ls-1)*mc.sp))*10)-10, mc.fl[mc.s].name, 1, red, white, 1)
Font.print(kristen, 0, 10, "Welcome " .. nickname .. "", red)
Font.print(kristen, 0, 20, "Your Custom Firmware is " .. cfw .. "", red)
Font.print(kristen, 0, 30, "You Have A PSP: " .. model .. "", red)
Font.print(kristen, 380, 10, "" .. month .."/" .. day .. "/" .. year .. "", red)
Font.print(kristen, 380, 20, "" .. hour .. ":" .. minute .. ":" .. second .. ":" .. millisecond .. "", red)
Font.print(kristen, 380, 30, "" .. battery .. "%", red)
Font.print(kristen, 380, 40, "" .. life .. " Min.", red)
Font.print(kristen, 380, 50, "Brightness: " .. brightness .. "", red)
Font.print(kristen, 380, 60, "Volume: " .. volume .. "", red)
Font.print(kristen, 5, 220, "Created by ZeroorDie559", red)
Font.print(kristen, 5, 230, "************************ ************************* ************************* *****", red)
screen.flipscreen()
screen.endDraw()
screen.flipscreen()
elseif mc.nf < i then break end
end

if pad:down() and not oldpad:down() then mc.s = mc.s + 1 end
if pad:up() and not oldpad:up() then mc.s = mc.s - 1 end

if mc.s > mc.nf then mc.s = mc.nf elseif mc.s < 1 then mc.s = 1 end
if mc.s > mc.sp*mc.ls then mc.ls = mc.ls + 1
elseif mc.s < ((mc.ls-1) * mc.sp)+1 then mc.ls = mc.ls - 1 mc.s = (mc.ls)*mc.sp end

if pad:cross() and not oldpad:cross() then
if not mc.fl[mc.s].directory then
if string.lower(string.sub(m c.fl[mc.s].name, -4)) == ".mp3" then
mp3 = Mp3me.load("mc.fl[mc.s].name")
Mp3me.play("" .. mp3 .. "")
elseif string.lower(string.sub(m c.fl[mc.s].name, -4)) == ".wma" then
wma = ALL.load("mc.fl[mc.s].name")
ALL.play("" .. wma .. "")
end
elseif mc.fl[mc.s].directory then
System.currentDirectory(m c.fl[mc.s].name)
mc.s = 1
mc.fl=System.listDirector y()
mc.nf=table.getn(mc.fl)
mc.ls = 1
end

elseif pad:triangle() and not oldpad:triangle() then
if System.currentDirectory ~= "ms0:/MUSIC" then
System.currentDirectory(" ./..")
mc.s = 1
mc.fl=System.listDirector y()
mc.nf=table.getn(mc.fl)
mc.ls = 1
end
end
end

analog_X = pad:analogX()
analog_Y = pad:analogY()

mode = {x = System.getBrightness(), y = System.getVolume()}

if analog_X > 50 then
if mode.x < 95 then
mode.x = mode.x + 2
end
elseif analog_X < -50 then
if mode.x > 0 then
mode.x = mode.x - 2
end
end

if mode.x ~= System.getBrightness() then
System.setBrightness(mode .x)
end

if analog_Y < -50 then
if mode.y < 30 then
mode.y = mode.y + 1
end
elseif analog_Y > 50 then
if mode.y > 0 then
mode.y = mode.y - 1
end
end

if mode.y ~= System.getVolume() then
System.setVolume(mode.y)
end

if pad:select() then
screenshot = System.startOSK("Screensh ot.jpg", "ms0:/PSP/PHOTO/Zero+ Screenshots/")
screen.save("" .. screenshot .. "")
end

while true do
pad = Controls.read()
screen.clear(0)
runmc()
screen.waitVblankStart()
screen.flipscreen()
oldpad = pad
if pad:start() then break end
end

the browser's kinda wierd too, i still gotta fix it so if you can also help with the y position that'd be great.

[xXChromeXx]

Could someone please tell me how to check collision based on colour. I have checked but found nothing.

[Predricted]

1. PGE
2. Read PGE's docs, its all there.

I tried to convert my code to PGELua but it seems very different it don't uses screen.waitVblankstart and screen.flip and more of those kinda things..
Can you tell me how to make an alpha color in luaplayerHM?
-=Double Post Merge =-

i need some help please, im trying to make an mp3 player in LuaPlayer HMv2. i've already got the music browser working but when you click a mp3 it freezes. here's my code:



the browser's kinda wierd too, i still gotta fix it so if you can also help with the y position that'd be great.

I used luaplayerHMv2 also but it seems that MP3 function is bugged.. But try luaplayerHM7 RC1 Mp3 function there worked for me..

[dan369]

ColourObject = Color.new(red, green, blue, alpha)
--IN pge
ColourObject = pge.gfx.createcolor(red, green, blue, alpha)

[Predricted]

ColourObject = Color.new(red, green, blue, alpha)
--IN pge
ColourObject = pge.gfx.createcolor(red, green, blue, alpha)

I tried that but the 4th argument which is alpha doesn't effect the color if i make it 100 or 255 its all the same

[dan369]

Are you sure? Which HM you using the latest one?

[scionsamurai]

does luaplayer hmv2 support normal lua code?(i coded it for luaplayer 0.2 but need a hm function)

[mootjeuh]

LPHMv2 supports most of the lua code, but there are diffrent (modified) functions.

eg:

screen:print(x,y,text,color)

is in LPHMv2:

screen.print(x,y,text,size,color,glow color, pgf font from 0-7)

[Predricted]

Are you sure? Which HM you using the latest one?

LuaplayerHMv2 had that function but I use luaplayerHM7 RC1

[dan369]

I don't think it works in HM7.

[Predricted]

I don't think it works in HM7.

You don't have to think it don't works for sure..
But can I make a function which will make alpha color?

[FaT3oYCG]

pge can use alpha colours and i dont think any of the other playes could it was either 255 or 0 atleast that is what i found i think it may have been a bug.