PSP Programming Tutorials

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Zitat von Yeldarb

xigency - pgblit.h I've heard, but back in the day (haha, I make it sound so long ago, but really it was only like a month ago), I used Shine's blitting code to draw directly to vram. I'll find a link of an example file that I made for someone, hang on a second and I'll edit my post.

Edit: Argh, the forum must prune posts. My example is no more.

I'll attach it again.

Edit 2: I don't have the original, only a modification that I made of it. But it should show you the basics ;)
(be sure to look at the Makefile, it's important)

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This must be Shine's code derived from the Snake game. I have two questions. Is his blitting code more efficient than pg.h and pg.c (what I typically use), and does it support 32-bit color? Also, do you really need to run the Java program in order to compile this? I was thinking of leaving that out in the makefile.

Edit: wait, it somehow compiled succefully with the javac command and ran the Java code. I don't even have the Java SDK installed! Well, my other question is still pending...

Yes, it is Shine's code, and I don't know if it's more efficient than pg, I've never used it (I haven't programmed any significant in a while)
It should support 32 bit color.. but I don't think the blitting code does it, if there is any transparency it will (i believe) blit it as fully transparent.

Edit: The java file converts the picture.

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Zitat von sumpaintballer41

Man i would love to see a good tutorial on loading images in Lua, Its alot different than C++

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to load:
imageHandleVariable = Image.load("something.png ")

to draw:
screen:blit(xPosition, yPosition, imageHandleVariable)

and for animations:
screen:blit(xPos, yPos, imageHandle, imageXPos, imageYPos, Width, Height)
example:
screen:blit(x, y, explosion, frameWidth*frame, 0, frameWidth, frameHeight)

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Zitat von HaxxBlaster

Okey, great tutorial anyway, it would be the best if you butted in some pictures also, like (Now, the code looks like this) so there is no missunderstanding.
And what file should the Makefile be? I thought you said .ie but the shell dident see it.

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The makefile has no extension, it's just "Makefile" (no "." anything)

I learned some REALLY basic lua from here and tried to do some on my own, we def need a good tutorial on images. THANX SO MUCH XIGENCY! Im venturing into lua with my first game I'm calling SEIZURE, its just gunna count how long you can last while loading black and white images at decreasing intervals..does lua have a wait function??

Thanx!!

you can just use screen.waitVblankStart( x ) where i think x is the number of times to wait. each wait is 1/60 of a second

Hi, I just made my EBOOT.PBP file, really pleased! But the PSP goes black after I select the Hello World app, then comes back saying "Game could not be loaded".

My directory structure is:

ms0:/PSP/GAME/HELLO/EBOOT.PBP

is that wrong?

I also tried:

ms0:/PSP/GAME/HELLO%/EBOOT.PBP

I'm using version 1.5 firmware. Cheers for any help!

you need to use kxploit, its somewhere in the downloads section on this site

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Zitat von xigency

you can just use screen.waitVblankStart( x ) where i think x is the number of times to wait. each wait is 1/60 of a second

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Oh so its pretty much like C in that case..thanx man!...Im just making a little self app becuase me and my friend were laughing at DDR saying its like SEIZURE THE GAME..hahaha NOW IM GUNNA MAKE IT!! haha Ill try at least, now to get some FUN-KAY techno music on there...which type of music do you think works best, mod or ogg vorbis?

Thanx alot man!

Can someone please answer my question? What format should the "MakeFile.?" be?
The tutorial diden't put that you clearly.

The makefile must have no extension. If you are using windows to see the extensions of file types goto any explorer window (e.g. My Computer) and goto Tools > Folder Options > View and then untick "Hide extensions for known file types"

You will see if the makefile has an extension, if so, right click and rename the file to just "makefile" from "makefile.txt" or whatever.

Hope that answers your question.

Ahem: http://forums.qj.net/showpost.php?p=...&postcount=604
And from the tutorial:

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So create a new file called "Makefile" with no extention (ie, no .txt)

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Zitat von meridimus

The makefile must have no extension. If you are using windows to see the extensions of file types goto any explorer window (e.g. My Computer) and goto Tools > Folder Options > View and then untick "Hide extensions for known file types"

You will see if the makefile has an extension, if so, right click and rename the file to just "makefile" from "makefile.txt" or whatever.

Hope that answers your question.

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Thanks man, very understandable. But now i get this error, am i missing the file, or are there some other explanation? I installed all the required packages. Uhh..

incase anyones interested, i got my cygwin fixed, the bat was pointing the sdk to the wrong place, and it dont like MAKEFILE's and MAIN.C's in caps so i had to make them lowercase

i posted this already and it never got answered:

when i run CYGWIN it says there is an error with the server greeting, anyone know what the problem is?

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Zitat von Serneum

i posted this already and it never got answered:

when i run CYGWIN it says there is an error with the server greeting, anyone know what the problem is?

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Sorry you never got your question answered, can you give us a screenshot?

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Zitat von JustChris

And now to something else: I'm wondering if most people here won't mind if I start a new programming tutorial thread (not lua based), one based on how to display graphics to the screen? And other people are welcome to add their own tutorials and advice as well.

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Second call, if anyone's interested.

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Zitat von Slasher

Ok i've got it working but when I try to compile my hello world application I'm getting the error
"main.c:15: error: parse error before 'args'
make: *** [main.o] Error 1"


line 15 looks like this
"int CallbackThread(sceSize args, void *argp) {"

help please

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I wouldn't mind getting this error fixed by anyone willing to help, do you need more information or is this enough?

Try SceSize instead of sceSize; it's case sensitive.

Code:

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#include <pspkernel.h>
#include <pspdebug.h>
PSP_MODULE_INFO("Hello World", 0, 1, 1);
#define printf pspDebugScreenPrintf
/* Exit callback */
int exit_callback(int arg1, int arg2, void *common) {
        sceKernelExitGame();
        return 0 ;
}
/* Callback thread */
int CallbackThread(SceSize args, void *argp) {
        int cbid;

        cbid = sceKernelCreateCallback("Exit Callback", exit_callback, NULL);
        sceKernelRegisterExitCallback(cbid);

        sceKernelSleepThreadCB();

        return 0;
}
/* Sets up the callback thread and returns its thread id */
int SetupCallbacks(void) {
        int thid = 0;

        thid = sceKernelCreateThread("update_thread", CallbackThread, 0x11, 0xFA0, 0, 0);
        if(thid >= 0) {
                sceKernelStartThread(thid, 0, 0);
        }

return thid;
}
int main() {
        pspDebugScreenInit();
        SetupCallbacks();
        printf("Slasher pwns you");
        sceKernelSleepThread();
        return 0;
}

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this is EXACtly what I put, and im still getting the same error

EDIT: it shows a few spaces in the code but they aren't really there, its just the forum glitch

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Zitat von sumpaintballer41

Sorry you never got your question answered, can you give us a screenshot?

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sure here you go

http://img.photobucket.com/albums/v9...screenshot.png

It looks like it worked logging you in as anonymous! Did it just stop after that?? Have you tried setting up your environment first?

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Zitat von JustChris

Second call, if anyone's interested.

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Im extremely interested!!

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Zitat von Slasher

/* Callback thread */
int CallbackThread(SceSize args, void *argp) {
int cbid;

cbid = sceKernelCreateCallback(" Exit Callback", exit_callback, NULL);
sceKernelRegisterExitCall back(cbid);

sceKernelSleepThreadCB();

return 0;

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hey slasher, your callback function is spaced out, thats not a forum error..
At least i think its not, try removing that spaces between sceKernelRegisterExitCall and back..Double check your code for that error!

Hope it helps!

When I try installing Cygwin with the setup, the FTP server I Choose eventually stops working I guess. Sometimes at 16%, 54%, I've never made it to 100. I tried many of them, but then all of a sudden it will stop and say "Connecting..." and never return to installing the files.

Can anyone PLEASE help me?

Nevermind, I got it.

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Zitat von JustChris

This must be Shine's code derived from the Snake game. I have two questions. Is his blitting code more efficient than pg.h and pg.c (what I typically use), and does it support 32-bit color? Also, do you really need to run the Java program in order to compile this? I was thinking of leaving that out in the makefile.

Edit: wait, it somehow compiled succefully with the javac command and ran the Java code. I don't even have the Java SDK installed! Well, my other question is still pending...

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what is pg.h or pg.c and where do you get it? does it support loading of images and does it support transparency?

edit: nvm, i just found the psp sdk samples, so i think i can figure gfx stuf out

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Zitat von HaxxBlaster

Thanks man, very understandable. But now i get this error, am i missing the file, or are there some other explanation? I installed all the required packages. Uhh..

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Please do answer my question. I really need you guys help.

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Zitat von sumpaintballer41

Im extremely interested!!



hey slasher, your callback function is spaced out, thats not a forum error..
At least i think its not, try removing that spaces between sceKernelRegisterExitCall and back..Double check your code for that error!

Hope it helps!

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It is the forum glitch, there isn't a space there

whats the code for a sprite?

Hmm slash, ill look at it right now..

*yeah, when I rewrote it and reposted it, it came up with a space...hmm...*

Ill overview the code again..


hmm, well it says parse error...Im more of a C guy myself, but to me this seems like an invalid syntax causing an error in the parsing of the stream.... the thing is..I DONT SEE ANY INVALID SYNTAX! this is a very small error, cuz i don't even see it! haha

im new to C, and programming.... how would i loop the counter on the third tutorial so the counter can start again if you press X?

Code:

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 int main() {

pspDebugScreenInit();
SetupCallbacks();

int counter = 0;
int i = 0; SceCtrlData pad;

printf("Press [X] To Start the Timer");

 while(1) {

          sceCtrlReadBufferPositive(&pad, 1);

          if(pad.Buttons & PSP_CTRL_CROSS) {
                    break;
          }
}
 while(1) {
          sceCtrlReadBufferPositive(&pad, 1);
          if(pad.Buttons & PSP_CTRL_CIRCLE) {
                    break;
          }
          pspDebugScreenClear();
          printf("Press [O] To Stop the Timer\n");
          printf("Counter: %i", counter);
        counter++;

          for(i=0; i<5; i++) {
                    sceDisplayWaitVblankStart();
          }
 }

pspDebugScreenClear();
printf("Counter Finished. ");
printf("Final Count: %i", counter);

//after this.... what would i use to go back ot the begining?

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Well first off, I think this is Lua, but thats okay, your new, Lua is a different programming language many developers use.

I believe to fix your problem you would have to setup a call back to the time before the counter started, example:

return main
if(pad.Buttons & PSP_CTRL_CROSS) {
break;

and you would setup a call back for main before the program

First off you are completely wrong that is C paitballer... :icon_wink

Code:

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 int main() {

pspDebugScreenInit();
SetupCallbacks();

int counter = 0;
int i = 0; SceCtrlData pad;
while(1) {
printf("Press [X] To Start the Timer");

 while(1) {

          sceCtrlReadBufferPositive(&pad, 1);

          if(pad.Buttons & PSP_CTRL_CROSS) {
                    break;
          }
}
 while(1) {
          sceCtrlReadBufferPositive(&pad, 1);
          if(pad.Buttons & PSP_CTRL_CIRCLE) {
                    break;
          }
          pspDebugScreenClear();
          printf("Press [O] To Stop the Timer\n");
          printf("Counter: %i", counter);
        counter++;

          for(i=0; i<5; i++) {
                    sceDisplayWaitVblankStart();
          }
 }

pspDebugScreenClear();
printf("Counter Finished. ");
printf("Final Count: %i\n\n", counter);
printf("To Resume Counter Press [X]");
 while(1) {
          sceCtrlReadBufferPositive(&pad, 1);
          if(pad.Buttons & PSP_CTRL_CROSS) {
                    break;
          }
          for(i=0; i<5; i++) {
                    sceDisplayWaitVblankStart();
          }
 }

}

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Should work.

Sprites or Gfx anyone?

xigency - there is a large leap in the learning curve going from text based stuff to graphics based stuff. If you're up for it, go look at Shine's Snake game in C, it will give you a good example (and it's now I learned).

HAHA now i feel dumb....But isnt this a Lua programming tutorial? and coorect me if im wrong, but Isnt lua a completely different language than C?

Thanks for the help!

no the 3 tuts explain how to set up the SDK, how to make a hello world app in C, and a counter in C. Lua is something else all together

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Zitat von Yeldarb

xigency - there is a large leap in the learning curve going from text based stuff to graphics based stuff. If you're up for it, go look at Shine's Snake game in C, it will give you a good example (and it's now I learned).

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Thank's for that advice, I've been trying to learn it by looking at pspgu.h in the compiler

Magician - wow. I looked at that and it bobbled my mind... I don't know OpenGL *lol* so I was like "wtf" That's a level up still from normal gfx programming, writing to the vram is much easier in my opinion.

Edit: Sumpaintballer - Nah, wrong thread; there is another sticky with Lua tutorials ;)