Lua Programming Help Thread

[Freshmilk]

Alright, I have a lua question that isn't really to do with programming. I've been making a game for some time now, whilst back on 3.52 m33, using luaplayer 0.16 because it was apparantly the fastest, however last night I hit some PSP problems, bricked and had to update to 3.80 m33. My game wouldn't run on 3.80 m33, whilst other lua applcations would, so I tried using a different version. The only one I could get to work was HM7, but that dropped the frps of my game from 27 to 9. Next, I tried updating to 4.01 m33, to see if I could get luaplayer 0.16 to work on that. No joy.

My question is, whats the fastest luaplayer avalible for 4.01 m33, or is there anything I can do to get luaplayer 0.16 to work with this firmware? Any ideas? (Ps. I do know I could just go back to 3.52 m33 and make this, but that means upon release it will still not work for newer firmwares, which would be a shame.)

[xXChromeXx]

Alright, I have a lua question that isn't really to do with programming. I've been making a game for some time now, whilst back on 3.52 m33, using luaplayer 0.16 because it was apparantly the fastest, however last night I hit some PSP problems, bricked and had to update to 3.80 m33. My game wouldn't run on 3.80 m33, whilst other lua applcations would, so I tried using a different version. The only one I could get to work was HM7, but that dropped the frps of my game from 27 to 9. Next, I tried updating to 4.01 m33, to see if I could get luaplayer 0.16 to work on that. No joy.

My question is, whats the fastest luaplayer avalible for 4.01 m33, or is there anything I can do to get luaplayer 0.16 to work with this firmware? Any ideas? (Ps. I do know I could just go back to 3.52 m33 and make this, but that means upon release it will still not work for newer firmwares, which would be a shame.)

Install the 1.5 kernel on your 4.01m33

[Freshmilk]

Install the 1.5 kernel on your 4.01m33

Sorry, I'm really new to the higher custom firmwares. Up until about 2 weeks ago I was on 3.03 OE-C. I'm not too sure of what you mean, considering I've set the configuration in recovery to 1.50 kernal, but I'll go find a guide or something. Thanks.

[Hardrive]

Sorry, I'm really new to the higher custom firmwares. Up until about 2 weeks ago I was on 3.03 OE-C. I'm not too sure of what you mean, considering I've set the configuration in recovery to 1.50 kernal, but I'll go find a guide or something. Thanks.

The 1.50 kernel does not come by default with the M33 firmwares anymore, you have to install in manually. This is because the slims can't run the 1.50 kernel. I would advise that you fix your game so that it will work on the slim, especially if you plan on entering it into a contest. Preventing many users from running your game simply because you can't be bothered to fix is pretty lame IMO.

Anyways, I believe that you can find the 1.50 kernel addon on Dax's site.

[Freshmilk]

I got the kernal add on, and for some reason the frame rate of my game has gone from 27 fps to 41. Strange, but cool. I was thinking of just relelasing the game with a different version of luaplayer for the slim, but having seen how much it lags now, I guess i'll have to find another way. How would you suggest I do it?

[xXChromeXx]

Luaplayer for 1.00 should work on slim

[dan369]

LuaplayerHM or Cools Mod or the Luaplayer 0.20 mod for kernel 3xx

[pspprelgnd]

ok when i insert an image of a person for example how can i make that person move or do i have to get multiple pictures of dofferent actions?
-=Double Post Merge =-

Alright, I have a lua question that isn't really to do with programming. I've been making a game for some time now, whilst back on 3.52 m33, using luaplayer 0.16 because it was apparantly the fastest, however last night I hit some PSP problems, bricked and had to update to 3.80 m33. My game wouldn't run on 3.80 m33, whilst other lua applcations would, so I tried using a different version. The only one I could get to work was HM7, but that dropped the frps of my game from 27 to 9. Next, I tried updating to 4.01 m33, to see if I could get luaplayer 0.16 to work on that. No joy.

My question is, whats the fastest luaplayer avalible for 4.01 m33, or is there anything I can do to get luaplayer 0.16 to work with this firmware? Any ideas? (Ps. I do know I could just go back to 3.52 m33 and make this, but that means upon release it will still not work for newer firmwares, which would be a shame.)

i used the team m33 version of lua on my psp 3.90 m33-3
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how can i convert a .lua file into an eboot.pbp if possible?

[wicked_fable]

ok when i insert an image of a person for example how can i make that person move or do i have to get multiple pictures of dofferent actions?
-=Double Post Merge =-


i used the team m33 version of lua on my psp 3.90 m33-3
-=Double Post Merge =-
how can i convert a .lua file into an eboot.pbp if possible?

It is pretty obvious that if you want your character to move left, right, up, or down and make it look like it is actually walking/running/jumping/etc. you need multiple frames to make this happen.

Also, why would you need to convert a .lua file into an Eboot? Simply bundle it with a LuaPlayer if you wish it to run by itself.

[pspprelgnd]

how do i get the analog stick to work?

[dan369]

pad:analogX()
pad:analogY()

Here http://www.evilmana.com/tutorials/codebase/analog.php

[Freshmilk]

Uhh, hi guys, me again. I've hit another little snag in the game I'm making. The problem being with music. I know that using luaplayer v0.16 this has no MP3 support or anything like that, that I can only use MIDI files, thats not a problem. The problem is, the game is rather large; and whilst music runs fine in the menu, it just lags like hell in game. Apart from trying to optimize my code and using the collect garbage function, what else could I do to try and speed it up a little?

[dan369]

Code efficiently?

Also Is it the Main Song e.g Always or Mostly played?

[PSProgramer]

ok, Are you using a state system?? if not get one it will help make your code run faster, also, how wany different.lua files do you have that have a while true do loop in them??? you should be able to narrow your entire game down to only one or 2 while true do loops. You have any questions about what I've said then P.M. me or ask on this thread.

[TurtlesPwn]

PSProgrammer, none of what you just said will have a damn thing to do with how fast the game runs. A state system is actually slower than other methods and having several different lua files allows memory to be conserved by only loading what's needed.

-Only blit images when you NEED TO
-Don't use fonts
-Any image that does not move around, blit it to the background so it is blitted with the background
-Store lots of stuff in variables rather than recalculating it constantly
-If you're using a bullet system with sin/cos, make a sin/cos cache table so that it doesnt have to recalc sin/cos each time you need it but instead simply accesses the value in the table

[FaT3oYCG]

state systems are useful for menus, you can have the main game in a seperate lua file, and credits that are usually small inside one of the states for the menu, levels of the game can be in different lua files, aslong as the layout of the game is made correctly so that each level is loaded into the game rather than swapped to.

i would add more but i cba.

[TurtlesPwn]

Saying you would add more but cba is like saying Ok I am done now but I want you to know I could be more helpful but I am too busy to help you more than I already have.

[FaT3oYCG]

Saying you would add more but cba is like saying Ok I am done now but I want you to know I could be more helpful but I am too busy to help you more than I already have.

that is true, if you need any more help you can hit me up on msn.

[xXChromeXx]

Is it possible to rotate text in Lua? if so how would I do it?

[FaT3oYCG]

print the text to an Image.createEmpty() and then rotate the image, it would be much easier and the only way i can think of.

[TurtlesPwn]

[WIP] Arkanoid Deluxe

[xXChromeXx]

I want an image to blit for three seconds so I made this function

function  rotateload()

screen:blit(0,0,rotatebg)

counter = Timer.new()
currentTime = counter:time()

screen:print(5,5,"Time: "..currentTime,white)

if gamestate == "rotatescreen" and timerstart == "false" then
counter:start()
timerstart == "true"
end

if currentTime > 3000 then
gamestate = "beggining"
counter:reset(0)
end
end

The timer just stays at 0 and the rest doesn't work.
I don't understand why it won't work???

[dan369]

It's this If

if gamestate == "rotatescreen" and timerStart == false then

Simple debugging should do the trick.
Print The gamestate to the screen to see if the gamestate gets changed

[xXChromeXx]

It's this If

if gamestate == "rotatescreen" and timerStart == false then

Simple debugging should do the trick.
Print The gamestate to the screen to see if the gamestate gets changed

No it doesn't change. But why would it change if the timer never reaches 3000???

[dan369]

 
 IF THE GAMESTATE IS "rotatescreen" THEN DO SOMETHING END 

If the gamestate doesn't change then Simple Logic: It will not work

[xXChromeXx]

 
 IF THE GAMESTATE IS "rotatescreen" THEN DO SOMETHING END 

If the gamestate doesn't change then Simple Logic: It will not work

This fuction only happens if the gamestate == "rotatescreen"

[dan369]

Then That Makes sense.
I'd do this

function QuickBlit()
local counter = Timer.new()
local counterTime = counter:time()

counter:start()

while counterTime < 3000 do

screen:blit(0,0,bg)
     end
end

[xXChromeXx]

Then That Makes sense.
I'd do this

function QuickBlit()
local counter = Timer.new()
local counterTime = counter:time()

counter:start()

while counterTime < 3000 do

screen:blit(0,0,bg)
     end
end

Thanks

[dan369]

That would be more efficent, i'd say tidier aswell. Test it, tell me if it works?

[yaustar]

In both of your functions (dan and chrome), you are creating new timer objects in the function. That means every time you call the 'blit' function, it will create a timer object then using that new created timer, work out how much time has passed (and since it is in the same frame it will be 0).

With that in mind, how should you fix this?