Quick Jump Daily Digest

**xXChromeXx** · 09-04-2008, 12:41 PM

Zitat von wicked_fable

I don't think he wants to UN-compress he wants to compress the file.

Yes I want to compress the files into either a zip or rar

**TurtlesPwn** · 09-04-2008, 03:19 PM

1. Read this and listen to it. It's called indentation and it makes your code much easier to read.

2. Learn to use for loops, they'll cut lots of redundancy

3. Work through the logic of your code in your head and ask yourself why you're doing each step. If you don't know, either figure it out, or get rid of it until you do. If it makes more sense to do it a different way at seems like it would be faster, make it do it the faster way. It's called optimization.

4. Why do you need to run the CPU at 333mhz just for a SIMPLE mp3 player, especially when the ME is doing all the MP3 work?

**Digikid13** · 09-05-2008, 05:51 PM

Zitat von eldiablov

God, that just screams inefficient.

thanks...

**Anti-QuickJay** · 09-05-2008, 05:54 PM

Zitat von Digikid13

thanks...

You should optimize that chunk.

**Digikid13** · 09-05-2008, 05:58 PM

Zitat von TurtlesPwn

1. Read this and listen to it. It's called indentation and it makes your code much easier to read.

2. Learn to use for loops, they'll cut lots of redundancy

3. Work through the logic of your code in your head and ask yourself why you're doing each step. If you don't know, either figure it out, or get rid of it until you do. If it makes more sense to do it a different way at seems like it would be faster, make it do it the faster way. It's called optimization.

4. Why do you need to run the CPU at 333mhz just for a SIMPLE mp3 player, especially when the ME is doing all the MP3 work?

1. I really didn't need indentation. *sigh*

2. I just thought of that:

Code:

for a = 1, 100 do
      Image:fillRect((200 + a), Mp3me.visL(a), 1, 300)
      Image:fillRect((300 + a), Mp3me.visR(a), 1, 300)
end

3. =.=

4. Wouldn't be based of off you game CPU settings.

**TurtlesPwn** · 09-05-2008, 06:14 PM

1. Yes, you do need indentation. You're being ignorant if you think otherwise.

2. Close but that would make you draw 200 bars, i would do for a = 0, 100, 10 do or similar so it increments in 10 instead of 1

3. Don't shake your head at it, listen to it. It's how you get better, it's how you learn, it's how you stop needing to ask for help on trivial things like this.

4. What?

**Digikid13** · 09-05-2008, 06:33 PM

Zitat von TurtlesPwn

1. Yes, you do need indentation. You're being ignorant if you think otherwise.

2. Close but that would make you draw 200 bars, i would do for a = 0, 100, 10 do or similar so it increments in 10 instead of 1

3. Don't shake your head at it, listen to it. It's how you get better, it's how you learn, it's how you stop needing to ask for help on trivial things like this.

4. What?

1. I use indentation in all of my work. I just didn't need it in the last one, because I used it.

2. That is what I wanted. It makes it look more uniform.

3. You sent me through a loop with all of that. I try to use some logic with what I do, but I can't if I don't know what I am doing.

4. In the VSH menu, you know where you select the CPU speed for the game, would it not be based off of that.
-=Double Post Merge =-
How can I record my game and turn it into my eboot pic.

**Anti-QuickJay** · 09-05-2008, 06:34 PM

I think that only works for the ISOs and XMB speeds.

**Digikid13** · 09-05-2008, 06:36 PM

Zitat von Anti-QuickJay

I think that only works for the ISOs and XMB speeds.

Oh really I don't know why it is 333 mhz then.

**TurtlesPwn** · 09-05-2008, 07:11 PM

200 calls to drawRect will make it look more uniform but it'll also make it slow as all hell. And I didn't see complete proper indentation in your code

**Digikid13** · 09-05-2008, 08:02 PM

Well i didn't do the entire code, so i don't know if there is any. 333mhz =.= and it is not slow to me.

**FaT3oYCG** · 09-06-2008, 02:00 AM

hey turtles where is the code not indented properly, unless your going to moan about the code inside the while true do loop?

As I said that code probably isn't any good, while I was coding it I came across problems (one being that mp3me.eos() returns a string not a boolean o_O), I was unsure if these were speed issues or with the code that is why there is lots more code than would be needed to accomplish this feature and the reason for the cpu being set to 333mhz.

All in all the code i posted was just a way to do what he wanted that worked, I did not say it was any good, in fact I said the complete opposite.

**yaustar** · 09-06-2008, 02:25 AM

Zitat von TurtlesPwn

3. Work through the logic of your code in your head and ask yourself why you're doing each step. If you don't know, either figure it out, or get rid of it until you do. If it makes more sense to do it a different way at seems like it would be faster, make it do it the faster way. It's called optimization.

I disagree, what you have described is premature optimisation. You should get it working, then get it working faster (not rip it out because it is slow) but only if it is seen as a performance bottleneck else leave it.

If you find that a chunk of code is getting unwieldy to work with to make constant changes or you are copying and pasting a similar line/block of code a couple of times, then consider refractoring the code to make it more maintainable and/or reusable.

**bnc9** · 09-06-2008, 09:24 AM

Spoiler for code:

(The code's a bit big so I wrapped it in spoiler tags)
So heres my code for tile engine I'm porting from QBASIC to Lua
for some reason the map shows up ( the part I want) however it's very choppy and when I come up to a wall it blits all over the screen. Is there anything wrong in the code or is it just my computer?

**michaelp** · 09-06-2008, 09:59 AM

This isn't the Lua help thread, it's the C/C++ help thread. Post in the appropiate thread. :)
And have you tested it on your PSP?
Last thing, indent your code.

**xploren** · 09-06-2008, 10:01 AM

Zitat von michaelp

This isn't the Lua help thread, it's the C/C++ help thread. Post in the appropiate thread. :)
And have you tested it on your PSP?
Last thing, indent your code.

I would think a thread titled "Lua Programming Help Thread" would be the Lua help thread.

**michaelp** · 09-06-2008, 10:18 AM

Whoops.

Maybe I'm going blind...

**Digikid13** · 09-06-2008, 01:30 PM

Zitat von michaelp

Whoops.

Maybe I'm going blind...

Yup you are..... ^^

**bnc9** · 09-06-2008, 07:06 PM

lol THIS is the C/C++ help thread? Anyway no I havent tried it on my PSP and I did indent my code but the spoiler tags took it out I put them there so the post looked neat not this huge wall of code.
EDIT:
GOD I feel like an idiot I had to add the ShowMap function at the top of the loop now it works perfectly

Spoiler for code:

heres the working code if anyone watns it.

**TurtlesPwn** · 09-06-2008, 08:43 PM

Indent much?

**bnc9** · 09-06-2008, 10:47 PM

FINE if you don't mind seeing a wall of code here:

Code:

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

playerImage = Image.createEmpty(16,16) 
ground = Image.createEmpty(16,16) -- ground tiles
wall = Image.createEmpty(16,16) -- wall tiels
playerImage:clear(red)
ground:clear(green)
wall:clear(blue)

function CreateWorld() --Create a Table with Data on the world 
	local buffer1 = {rows,cols,TopRow,TopCol,Action,Direc,PlayerY} -- {total rows,total columns, Top Row the is seen, Top Column that is seen,Check for actions in the loop,Chack for directions,Player's y(not necessary as of now}
	
	return buffer1
end

function MAP()
	local buffer1 = {tile}
	local buffer2 = {}
	setmetatable(buffer2,buffer1)
	return buffer2
end
North = 1
South = 2 -- Direction constants 
East = 3
West = 4
WorldData = CreateWorld()
Map = MAP()
worldMap = {} -- THE MAP
worldMap[1] = {2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,1}
worldMap[2] = {2,1,1,1,1,2,1,1,1,1,1,1,1,1,1,1,2,1,1,1,1,1,1,1,1,1,1,1,2,1}
worldMap[4] = {2,1,1,1,1,2,1,1,1,1,1,1,1,1,1,1,2,1,1,1,1,1,1,1,1,1,1,1,2,1}
worldMap[5] = {2,1,1,1,1,2,1,1,1,1,1,1,1,1,1,1,2,1,1,1,1,1,1,1,1,1,1,1,2,1}
worldMap[6] = {2,1,1,1,1,2,1,1,1,1,1,1,1,1,1,1,2,1,1,1,1,1,1,1,1,1,1,1,2,1}
worldMap[7] = {2,1,1,1,1,2,1,1,1,1,1,1,1,1,1,1,2,1,1,1,1,1,1,1,1,1,1,1,2,1}
worldMap[8] = {2,1,1,1,1,2,1,1,1,1,1,1,1,1,1,1,2,1,1,1,1,1,1,1,1,1,1,1,2,1}
worldMap[9] = {2,1,1,1,1,2,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,1,1,1,1,1,1,1,2,1}
worldMap[10] ={2,1,1,1,1,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,1}

function InitVars() -- Init of the variables on the first map blit
	WorldData.TopCol = 1
	WorldData.TopRow = 5
end

function MoveDown()
	WorldData.Direc = South 
	WorldData.TopRow = WorldData.TopRow + 1
end

function MoveLeft()
	WorldData.Direc = West 
	WorldData.TopCol = WorldData.TopCol - 1
end

function MoveRight()
	WorldData.Direc = East 
	WorldData.TopCol = WorldData.TopCol + 1
end

function MoveUp()
	WorldData.Direc = West 
	WorldData.TopRow = WorldData.TopRow - 1
end

function DrawTile(x,y,TileNumber) -- draw a specific tile
	if TileNumber == 1 then
		screen:blit(x,y,ground)
	end
	if TileNumber == 2 then
		screen:blit(x,y,wall)
	end
end
function ShowMap() --draw the entire map
for i = 0,1 do
	for j = 0,4 do 
		DrawTile(i*16,j*16,worldMap[i+WorldData.TopCol][j+WorldData.TopRow])
	end
end
end
InitVars()

while true do
	screen:clear()
	pad = Controls.read()
	ShowMap()
	if pad:down() and oldpad:down() ~= pad:down()then
		MoveDown()
		WorldData.Action = true
	end
	
	if pad:right() and oldpad:right() ~= pad:right() then
		MoveRight()
		WorldData.Action = true
	end
	
	if pad:left() and oldpad:left() ~= pad:left() then
		MoveLeft()
		WorldData.Action = true
	end
	
	if pad:up() and oldpad:up() ~= pad:up() then
		MoveUp()
		WorldData.Action = true
	end
	

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

**Digikid13** · 09-07-2008, 03:44 PM

You might want to add spacing too, I can't tell what goes together. Also, what is it that you want.
-=Double Post Merge =-
it only draws a corrner....

**bnc9** · 09-08-2008, 03:59 AM

About the corner:Well yea that's the point, I wanted to only see part of the map because say I made the map bigger I could place myself on one point that could by my start point and move my way through the level this is how 2d scrollers like zelda made their maps (of course their scrolling was way more advanced and looked much better than mine).

**Freshmilk** · 09-11-2008, 05:04 AM

This is beggining to annoy me now. I'm trying to get a sound to play properly in a game that I'm currently developing, but it just won't work and I can't figure out why. I'm trying to get a sound to play continously as a laser if firing, without having it playing like 5 times at once, if that makes sense. I want it to loop continuously up until the point the laser stops firing. I'm not good at explaining things, so maybe this will help:

Code:

abc = Sound.load("a.wav", false)

while true do

if abc:playing() == false then
abc:play()
end

end

That's something I wrote in another file, just to see if I could get it to work elsewhere first, but it still gives me the same error, just saying 'Loop ingettable'. I don't see what I'm doing wrong. Oh, and if it helps at all, I'm using Luaplayer v0.16.

Thanks in advance.

**yaustar** · 09-11-2008, 07:51 AM

The wav file needs to be mono and at a specific bitrate IIRC.

**Freshmilk** · 09-12-2008, 05:53 AM

I had the mono / stereo problem at first, because I created the wav file myself, but that was quickly resolved. Also, thanks for the advice, I hadn't thought of that; I do have other sound effects that have worked in other lua programs, so I'll go find out what bitrate they are. Thanks a lot.

EDIT:

It's still being weird. I've tried quite a lot of bitrates and none of them will work, it will load and play the sound but at the point where I check to see if the siound is already playing, I always get an error. Odd.

**FaT3oYCG** · 09-12-2008, 07:55 AM

use a PCM unsigned 8 bit, mono .wav file, you can change the format of your sound files with goldwave audio player, if that is a bit too much hastle for you then just send me a link to the sound file and ill convert it for you.

**Nielkie** · 09-12-2008, 08:17 AM

A sound object does not have the method "playing"

sound: play() returns a voice object, which you can then manipulate (e.g. stop, playing, etc)

so:

Code:

sound = Sound.load(file)
soundVoice = sound:play()

...
if not soundVoice:playing() then
	soundVoice = sound:play()
end

Next time, read the function documentation
http://wiki.ps2dev.org/psp:lua_playe...ound_and_music

**Digikid13** · 09-12-2008, 12:14 PM

I had I sound problem too I tried to play a wav. file, for the sound of a ball bumping against the wall =, but the problem was that it played a sec. later.
Also, I had it in front of the calculation, would that matter.