Homebrew [W.i.P] Lua Player Plus - First Lua Interpreter for 3DS

[NCDyson]

No problem, you're doing an excellent work with the wiki . It's very helpfull.

Smart update: Big speedup for drawing functions (Screen and Video modules).

Coming soon:
- PNG, JPG and TGA support.
- TTF fonts support.

are you porting freeType for the TTF support or did the psp version of lpp have it's own ttf loading code?

 

[Rinnegatamante]

We fully implemented TTF support but we're fixing some issues related to PNG loading (It seems checking PNG magic from header let library who we used (lodepng) to produce a buggy buffer).
We used stb_truetype library by Sean Barrett.

 

[Rinnegatamante]

Added PNG support and Alpha support for Bitmaps (Alpha channel must be written in X channel, png2bmp32 does this for example).

 

[Rinnegatamante]

Finally solved my issues with mic!

- Added microphone support (Sound.register(int seconds) can be used to register sounds playable after with Sound.play)
- Added possibility to save sounds in mono format with Sound.saveWav (Can be used to save registered sounds)

I added also a sample for microphone ( https://github.com/Rinnegatamante/lpp-3ds/blob/master/source/samples/mic.lua ).

 

[slapstick_]

Do you have a desktop version of lpp for developing applications with?

 

[Rinnegatamante]

To develop for lpp you just need a text editor (personally, i use Notepad++ to develop with C/C++/LUA).
I don't know if current 3DS emulator can emulate lpp (when i was writing first Hello World with lpp, i tried Citra3DS and it doesn't work with but maybe, with next revision now it works or probably works with other emulators (TronDS, 3dmoo).

 

[slapstick_]

I could probably write a basic compatibility layer in Lua on top of LÖVE that would help with development, at least for the graphics stuff.

 

[Rinnegatamante]

Sounds good, i was waiting for SDL2 porting (http://gbatemp.net/threads/sdl-for-3ds.374519/) by Rikku2000 to add new 2D graphics functions but i'm not sure if it will never be released.
For 3D graphics, i'm planning to use ctrGL by minexew (cause lpp-c++ for PSP/PSVITA uses instead openGL for 3D graphics).

 

[slapstick_]

That sounds way better. The thing I'm working on will probably only be useful for prototyping a game on the desktop.

 

[V3NUS_M1NER]

Does anyone have the latest version compiled???? I'd do it myself, but I don't know how to compile anything from Github

 

[Rinnegatamante]

You can download ORGANIZ3D. It works under the latest GitHub revision.

 

[asdfx]

Please pardon my gcc noobness, but when I try to compile lpp-3ds I get an error (while executing the makefile):

Spoiler: Error message

/root/lpp-3ds-master/source/luaAudio.cpp: In function 'void My_CSND_playsound(u32, u32, u32, u32, u32*, u32*, u32, u32, u32'):
/root/lpp-3ds-master/source/luaAudio.cpp:14:107: error: 'CSND_sharedmemtype0_cmde' was not declared in this scope
CSND_sharedmemtype0_cmde(channel, looping, encoding, samplerate, 2, 0, physaddr0, physaddr1, totalbytesize);

I've downloaded and compiled devkitARM, and libctru (and exported both paths)

Spoiler: Dumped includes paths from the Makefile

INCLUDE = -I/root/lpp-3ds-master/include -I/opt/devkitpro/libctru/include -I/root/lpp-3ds-master/build

I'm trying to compile on Debian 8 i686 with gcc 4.9.1

Any ideas of what's wrong? It looks like it cannot find the declaration of CSND_sharedmemtype0_cmde, but I have no idea why. The path of libctru is correct.

 

[Rinnegatamante]

You have to edit libctru to get some CSND functions i used in CSND.h

 

[asdfx]

Alright thanks, I've added the missing functions declarations and it worked

 

[asdfx]

I noticed some huge fps drops while trying to use drawImage.
10 images: 60 fps
20 images: 30 fps
40 images: 20 fps
etc.

I guess that's because it's drawing each pixel for each image.

 

[Rinnegatamante]

Yes, in next releases, i'll use a simple memset. (I'm still using pixel drawing for images cause the recent implementation of lodepng).

 

[Rinnegatamante]

A lot of news for lpp-3ds.

Improved Graphics Module, Video Module.
Fixxed a lot of bugs in System, Graphics and Video Module.
Added Console Module.
Added a built-in keyboard usable with System.startKeyboard (I know is crappy but i don't want to spend more time in a keyboard when we could have access to Nintendo keyboard in future).

 

[ArgentoVivo]

Hey Rinnegatamante,
nice work. Just buyed cubic ninja only to try your work.

I have used LUA PSP player some years ago, so now it's time to try on my 3ds

Bel lavoro!

 

[Rinnegatamante]

Good, i'm waiting for LUA devs on 3DS

Added three new graphics function:
Screen.getImageWidth
Screen.getImageHeight
Screen.drawPartialImage

So now it's possible to draw on Screens/Other images also only part of images.

Also added a check on width/height when devs attempt to draw images on screens. Now if you try to draw too large image for screen, it will be automatically crop-printed by drawImage.

 

[piratesephiroth]

is there any special reason for these errors I get on luaAudio.cpp whenever I try to compile it?

luaAudio.cpp:15:45: error: 'CSND_sharedmemtype0_cmd8' was not declared in this scope
CSND_sharedmemtype0_cmd8(channel, samplerate);

luaAudio.cpp:19:59: error: 'CSND_sharedmemtype0_cmd3' was not declared in this scope
CSND_sharedmemtype0_cmd3(channel, physaddr1, totalbytesize);