forums.ps2dev.org

Shine · Joined: 03 Dec 2004 Posts: 728 Location: Germany

Lua Player, for 1.0 and 1.5 compiled. Copy the EBOOT.PBP on your PSP and edit the script.lua for your own great programs and games. The script will be compiled on-the-fly on the PSP, without any compiler on your PC, you just need a text editor! A PNG loader is integrated, so you can write your own games with it, by changing the script.lua and copying all your PNGs to the game directory. And important for newbies (and sometimes for me) : It doesn't crash (or at least it should not), but if you pass a null-pointer to a function, you'll get a nice error message, with the line in the script, which caused the error.

ector · Joined: 12 May 2005 Posts: 195

Hehe, I had the same idea, though I ported LuaPlus, which has incredibly sweet integration with C++. You can do this:

liquid8d · Joined: 30 Jun 2005 Posts: 66

freakin awesome :) thanks Shine... this will definitely help those of us that are not as skilled. Maybe my WoW scripting will come in handy now!

LiQuiD8d

emumaniac · Joined: 08 May 2005 Posts: 79

Is this a proper release now or would you rather sites wait before posting the news :) ?

Shine · Joined: 03 Dec 2004 Posts: 728 Location: Germany

rinco · Posted: Sun Jul 17, 2005 7:38 pm Post subject:

Have you considered something like LuaSDL?

http://sourceforge.net/projects/luasdl/

Built with tolua, which isn't so bad.

DiabloTerrorGF · Joined: 15 Jul 2005 Posts: 64

Nice, I was waiting for a JRE, but this could let me get done what I want to get done.

Kinsman · Joined: 18 Jul 2005 Posts: 15 Location: Canada

Very cool. I was thinking about porting Javascript to the PSP myself, but this is just as good. :)

You probably have a lot of ideas about what you want to put in your library (sound, graphics, etc.), so I'll just suggest some less obvious things..

* Analog stick reading. I've seen some code in the forums or elsewhere that manages this..

* You should have a 'freeImage' command. (As well as a 'free' command for whatever else you want to load.)

* A timer that handles milliseconds. I checked the OS library for Lua, and it looks like the smallest time it can handle is seconds.

And also, when you release the final version, make sure you give it a general name like 'LUA Player' so we don't have a bunch of homebrew games all named 'Snake' :)

EDIT: If you check Section 3.8 of the "LUA 5.0 reference manual", you should find a section on 'userdata' objects. I think you can use them to avoid having to keep track of image handles - and, LUA will garbage collect image data for you.

Shine · Joined: 03 Dec 2004 Posts: 728 Location: Germany

VgSlag · Joined: 30 Jun 2005 Posts: 43

Thanks for this, its great!

I've started with a tile engine:

http://www.flash-git.net/pspProg1.jpg
http://www.flash-git.net/pspProg2.jpg

I'll be stripping out the mario gfx and using my own eventually.

When I draw my character over the tiles it removes the tiles, is there a way round this? I've not done this before so please excuse my ignorance.

G

Shine · Joined: 03 Dec 2004 Posts: 728 Location: Germany

VgSlag · Joined: 30 Jun 2005 Posts: 43

Cheers, thats fixed the BG looking messy when I move my character. I'm blitting my tiles to the"foreground" so redrawing the background isn't helping with my character making those dissapear.

Is there a better way of my doing that? Please excuse if my vernacular is all wrong and thanks for any help you can give.

Shine · Joined: 03 Dec 2004 Posts: 728 Location: Germany

VgSlag · Joined: 30 Jun 2005 Posts: 43

Ohhhh, I see!

Didn't realise it would work like that.

I'll just reblit the 4 tiles around the player ratehr than the whole map, that should work shouldn't it?

Thanks again!

tank · Joined: 20 Jul 2005 Posts: 4

Hey shine, great work on this.
To the person about the icon always being snake, just use PBP Unpacker and repack it with a new .SFO and new ICON0. Please keep this project going. It is a lot of fun.

here is my first psp lua demo:
- PSP 1.0 ( tested )
http://www.geocities.com/huntingdanimal/steel_demo_psp1.0.zip
- PSP 1.5 ( untested )
http://www.geocities.com/huntingdanimal/steel_demo_psp1.5.zip

let me know what you think.

qleyo · Joined: 06 May 2005 Posts: 21 Location: Nottingham, UK

Arwin · Joined: 12 Jul 2005 Posts: 426

If Lua will support sound, I could write a bemani (=music style, like stepmania) for it. That'd be fun!

From the looks of it, all I'd need right now is that multiple frame-switch option and then playing an mp3 in the background. (especially the latter ;) and maybe some sound effects ...)

Evil Inside · Joined: 21 Jul 2005 Posts: 17

I'm trying to run Snake and Steel Demo on Windows XP using PSPe09b.

Neither games will load, giving me an error like this:

Shine · Joined: 03 Dec 2004 Posts: 728 Location: Germany

Just to let you know I'm still working on this project: Preview of the PC Lua Player. The Snake game script works, but only image loading and blitting is implemented so far, I'll do the rest the next days, like joystick implementation with cursor keys, sound etc.

Evil Inside · Joined: 21 Jul 2005 Posts: 17

Excellent. I'm looking forward to analog stick and sound implimentation.

I've been digging up the source from my various Flash games and apps(just getting things prepped up and ready to dice into some lua scripting).

frogjy · Joined: 20 Jul 2005 Posts: 1

why i can't download demo???

ページを表示できません

VgSlag · Joined: 30 Jun 2005 Posts: 43

Shine, something else that would be really useful would be the ability to rotate an image.

I've got a cool 4-5 player game you could play on psp but it needs to be able to rotate images.

DiabloTerrorGF · Joined: 15 Jul 2005 Posts: 64

I was making a space invaders type game, but when doing a lot of action it slows down. Anyway to set the PSP to 333mhz when running our programs using LUA?

VgSlag · Joined: 30 Jun 2005 Posts: 43

Please excuse me for speaking for Shine but I've already asked this and he replied:

LiquidIce · Joined: 04 Apr 2005 Posts: 55

Hi Shine. I just wanted to post and say think you for providing this execelent development tool. It is going to be a lot easier for people to make quick games without having to know anything about compiling the toolchain.

It's something like this that sony should pick up sign with their key and put on a UMD with a nice graphics library. Then they give the ability to allow people to create their own games allowing homebrew to thrive without feeding into the piracy of their commercial games.

I'm looking forward to the PC player and the next release of Lua with GU lib. I have not ran into any major bugs, but it was difficult to understand some of the syntax. It helps to learn by example, and so far there are only 2 games out for this. I will be releasing the source code for my game when it's ready.

One thing that would speed up the development process is the ability for Lua to activate the USB on the PSP so you can modify the script while still in the game, then just hook the start button to restart the script when it's finished loading.

Thanks again!

Update: the SVN has a lua/doc directory with some good docs and examples. I also went to the bookstore and read a chapter in a book called "Programming Game AI by Example" by Mat Buckland. It was very helpful in understanding the way Lua works.

Armed with new knowledge, I still have questions.. is there any kind of hitTest in Lua? I want to do a hit test to see if one image intersects with another image on screen. In flash this is as simple as:
_root["bounce" + i].hitTest(_root.instanceName) //Checks to see if the bounce instance intersects the instanceName instance.

DiabloTerrorGF · Joined: 15 Jul 2005 Posts: 64

bugkiller78 · Joined: 22 Jul 2005 Posts: 5

hi guys,

I already installed PSPToolchain20050713 successfully. Now I'm installing the Lua by running "make" and get this error:

LiquidIce · Joined: 04 Apr 2005 Posts: 55

You will need to install both the toolchain and the pspsdk to compile this app. There are several threads in the PSPSDK forum which describe this process in great detail. Good Luck!

BTW, if all you want to do is make a Lua game, all you need to do is edit the script.lua file included in Shine's distribution. You do not need to compile anything to do this.

I'm waiting for Shine to release the next version of the player so I can finish my game. The way it runs right now is unplayable due to the speed of blitting multiple graphics at once, and the alpha issues i'm having for not filling the background correctly. Once I finish my game, I may attempt to add some quick networking code which will save and load high scores from a server.

Arwin · Joined: 12 Jul 2005 Posts: 426

bugkiller78 · Joined: 22 Jul 2005 Posts: 5

hi Arwin,

Yes, it was all about the PATH. I added C:\cygwin\usr\local\pspdev\bin\ to my path and the installation worked. However, when I "make" the ./lua/sample/ I got some errors: