C/C++ Programming Help Thread

[eldiablov]

Why are you using OSLib? o_O

And I think the UMD functions in the M33 SDK will be of better use.

[FaT3oYCG]

Why are you using OSLib? o_O

And I think the UMD functions in the M33 SDK will be of better use.

coz its easy and thanks

[mootjeuh]

I'd say that you're better off with libge.

[slasher101]

if (umdDetectedVariable == 0)
{
oslPrintf_xy(20, 240, "No UMD disc is inserted.");
} else {
oslPrintf_xy(20, 240, "UMD disc is inserted.");
}

If thinking when there is no UMD it doesn't return 0 and always executes the else statement

[FaT3oYCG]

i havent compared with my old code and i cant remember what i changed but got it to work now ...

#include <oslib/oslib.h>
#include <pspumd.h>

PSP_MODULE_INFO("Testing", 0, 1, 0);
PSP_MAIN_THREAD_ATTR(THREAD_ATTR_USER | THREAD_ATTR_VFPU);

int main()
{
    oslInit(0);
    oslInitGfx(OSL_PF_8888, 1);
    oslInitConsole();

    while (!osl_quit)
    {
        oslStartDrawing();
        oslCls();

        oslReadKeys();

		oslPrintf_xy(20, 20, "Testing");

		int umdCheck;
		umdCheck = sceUmdCheckMedium();

		if (umdCheck == 0)
		{
			oslPrintf_xy(20, 40, "No UMD present.");
		} else {
			oslPrintf_xy(20, 40, "UMD detected.");
		}

        if (osl_keys->held.hold)
		{
			oslPrintf_xy(20, 250, "Hold Activated!");
		}
        if (osl_keys->pressed.start)
		{
			break;
		}

        oslEndDrawing();
        oslSyncFrame();
    }

    oslEndGfx();
    oslQuit();

    return 0;
}

and that is running in usermode as like i said i cant see umd functions being kernel

[slicer4ever]

@slasher, the documentation clearly states that 0 is the proper return,

[psphacker12.]

Alright guys, n00b question.
Why can't I get the toolchain to install.??
And it skips the svn update.
I used to have all this shiz until my dad deleted it, mistakenly thinking its a virus.

MY [email protected] ~
$ ls
psptoolchain

MY [email protected] ~
$ cd psptoolchain

MY [email protected] ~/psptoolchain
$ svn update
Skipped '.'

MY [email protected] ~/psptoolchain
$ ls
build  depends  patches  readme.txt  scripts  toolchain-sudo.sh  toolchain.sh

MY [email protected] ~/psptoolchain
$ ./toolchain.sh
ERROR: Set $PSPDEV before continuing.
../depends/check-pspdev.sh: Failed.

MY [email protected] ~/psptoolchain
$

[Hardrive]

Why can't I get the toolchain to install.??

It tells you in your output, you have to set the PSPDEV environment variable.

And it skips the svn update.

That's because you have to provide it with a URL.

[psphacker12.]

It tells you in your output, you have to set the PSPDEV environment variable.

Well how would I do that?

That's because you have to provide it with a URL.

Really I was reading this and it just says:

Due to a recent problem with the toolchain, we need to update everything, so to get the updates and have them modify the toolchain script, you will need to type "svn update" and hit enter.

It just says type in svn update and hit enter




EDIT: nvm guys lol i just forgot to input this: export PSPDEV=/usr/local/pspdev
export PATH=$PATH:$PSPDEV/bin

[Art]

Hi Guys,
I thought there was a way to check in one operation,
if any buttons were pressed at all.
Rather than checking each button individually.
Anyone know how?

[will1234]

Hi Guys,
I thought there was a way to check in one operation,
if any buttons were pressed at all.
Rather than checking each button individually.
Anyone know how?

If i understand you correctly it would be this:

Instead of doing

if (paddata.Buttons & PSP_CTRL_CROSS)
{
//some code here
}

you would do

if (paddata.Buttons)
{
//some code here
}

[mootjeuh]

hey guys, does any1 know how to blit an image and make it "blink" ?

[psphacker12.]

I need help I still can't get cygwin to compile !!!

[mootjeuh]

did you install the psptoolchain ? coz it doesn't seem like it
and cygwin sucks, you should better use pspdev or minpspw

btw i still need help with my blinking problem

[FaT3oYCG]

hey guys, does any1 know how to blit an image and make it "blink" ?

blit the image oslib is good to use for most stuff, make a counter, incrememnt the counter, if the counter is less than a certain value then blit the image if it is more then dont, reset the counter when it reaches a certain value.

you could also use a timer to do this, it would be a bit harder but more efficient and not loop dependant.

I need help I still can't get cygwin to compile !!!

google: minpspw

[psphacker12.]

did you install the psptoolchain ? coz it doesn't seem like it
and cygwin sucks, you should better use pspdev or minpspw

btw i still need help with my blinking problem

Do you have a link for any other compilers than cygwin?
Because I hate that thing.

[FaT3oYCG]

read up

[mootjeuh]

Do you have a link for any other compilers than cygwin?
Because I hate that thing.

Let me Google that for you

[psphacker12.]

Hey guys, I have Minpspw, and Eclipse up and running, and I would like to know how to install libpng and zlib onto it? I have cygwin, and already used svn checkout to get them, I have a libpng folder, and a zlib folder, where do I put them to be able to use with Eclipse?? Thanks

[FaT3oYCG]

sigh

steps:
1. delete cygwin
2. use windows
3. use any normal text editor
4. read the minpspw documentation

Installed libs on minpspw by default:

zlib
bzip2
freetype
jpeg
libbulletml
libmad
libmikmod
libogg
libpng
libpspvram
libTremor
libvorbis
lua
pspgl
pspirkeyb
sqlite
SDL
SDL_gfx
SDL_image
SDL_mixer
SDL_ttf
smpeg
ode
libpthreadlite
cal3D
mikmodlib
cpplibs
flac
giflib
libpspmath
pthreads-emb
tinyxml
oslib
libcurl
intrafont
Jello
zziplib
Mini-XML

by the looks of things im thinking that you havent got a clue what the hell you are doing, nevermind programming in C

[psphacker12.]

by the looks of things im thinking that you havent got a clue what the hell you are doing, nevermind programming in C

Erm maybe I d/led an older version? Redownloading minpspw, and deleting cygwin.
AND I NEED TO: :rtfm:

Yup i checked what version i had, i had 0.7.1. the newest one is 0.9.5. So I guess thats why I didn't have the libs?
Either way it should (hopefully) work now.

Okay I read the readme for Minpspw and it says that it is the only thing that I need to create homebrew on the psp, but I can't seem to find a compiler...? Isn't there supposed to be a compiler that comes with the program, I can't find any. I've tried compiling it with the windows cmd, but that doesn't work.
Please don't think that I'm a dumbass...

[FaT3oYCG]

erm, you cd into the directory of your code when you have a makefile and script with the required libs and then type make

[psphacker12.]

Ok it works when I compile an audio tester, but with hello world it has some errors...?

C:\>cd projects

C:\PROJECTS>cd test

C:\PROJECTS\TEST>make
psp-gcc -I. -IC:/pspsdkdevkit/psp/sdk/include -O2 -G0 -Wall -D_PSP_FW_VERSION=15
0   -c -o main.o main.c
main.c:37: warning: data definition has no type or storage class
main.c:37: warning: type defaults to 'int' in declaration of 'pspDebugScreenInit
'
main.c:37: error: conflicting types for 'pspDebugScreenInit'
C:/pspsdkdevkit/psp/sdk/include/pspdebug.h:32: error: previous declaration of 'p
spDebugScreenInit' was here
main.c:38: warning: data definition has no type or storage class
main.c:38: warning: type defaults to 'int' in declaration of 'SetupCallbacks'
main.c:39: error: expected declaration specifiers or '...' before string constan
t
main.c:39: warning: data definition has no type or storage class
main.c:39: warning: type defaults to 'int' in declaration of 'pspDebugScreenPrin
tf'
main.c:39: error: conflicting types for 'pspDebugScreenPrintf'
C:/pspsdkdevkit/psp/sdk/include/pspdebug.h:49: error: previous declaration of 'p
spDebugScreenPrintf' was here
main.c:40: warning: data definition has no type or storage class
main.c:40: warning: type defaults to 'int' in declaration of 'sceKernelSleepThre
ad'
main.c:41: error: expected identifier or '(' before 'return'
main.c:42: error: expected identifier or '(' before '}' token
make: *** [main.o] Error 1

I attached my files,

[Hardrive]

Ok it works when I compile an audio tester, but with hello world it has some errors...?

You can't even copy and paste the tutorials correctly, can you?

Put this line:

int main() {

above this line:

pspDebugScreenInit();

[psphacker12.]

Thanks, Hardrive, well I was in a rush when I was copy/pasting it because my dad needed to get on the comp. , so I must've skipped over that part. I may be a n00b , but its a good learning experience.
I deserve a facepalm.

[FaT3oYCG]

*facepalm* you should really look into the basics of C and how libs work aswell as learning programming logic before you continue.

[psphacker12.]

Umm ok I have one more question, how do you put text over an image that you blitted to the screen? When I try to do it using the font sample included in the samples, It works but The image doesn't show up in the background, and well , the text is parts of the image.

int main(int argc, char **argv)
{
	scePowerSetClockFrequency(333, 333, 166); 
    char buffer[200];
    Image* bg;
    pspDebugScreenInit();
	SetupCallbacks(); 
	initGraphics(); 
    SceCtrlData pad; 
    
    int thid = sceKernelCreateThread("update_thread", CallbackThread, 0x11, 0xFA0, 0, 0);
	if(thid >= 0) {
		sceKernelStartThread(thid, 0, 0);
	}

	sceGuInit();
	sceGuStart(GU_DIRECT, list);
	sceGuDrawBuffer(GU_PSM_8888,(void*)0,BUF_WIDTH);
	sceGuDispBuffer(SCR_WIDTH,SCR_HEIGHT,(void*)0x88000,BUF_WIDTH);
	sceGuDepthBuffer((void*)0x110000,BUF_WIDTH);
	sceGuOffset(2048 - (SCR_WIDTH/2),2048 - (SCR_HEIGHT/2));
	sceGuViewport(2048,2048,SCR_WIDTH,SCR_HEIGHT);
	sceGuDepthRange(0xc350,0x2710);
	sceGuScissor(0,0,SCR_WIDTH,SCR_HEIGHT);
	sceGuEnable(GU_SCISSOR_TEST);
	sceGuDisable(GU_DEPTH_TEST);
	sceGuShadeModel(GU_SMOOTH);
	sceGuEnable(GU_BLEND);
	sceGuBlendFunc(GU_ADD, GU_SRC_ALPHA, GU_ONE_MINUS_SRC_ALPHA, 0, 0);
	sceGuEnable(GU_TEXTURE_2D);
	sceGuTexMode(GU_PSM_8888, 0, 0, 0);
	sceGuTexImage(0, 256, 128, 256, font);
	sceGuTexFunc(GU_TFX_MODULATE, GU_TCC_RGBA);
	sceGuTexEnvColor(0x0);
	sceGuTexOffset(0.0f, 0.0f);
	sceGuTexScale(1.0f / 256.0f, 1.0f / 128.0f);
	sceGuTexWrap(GU_REPEAT, GU_REPEAT);
	sceGuTexFilter(GU_NEAREST, GU_NEAREST);
	sceGuFinish();
	sceGuSync(0,0);
	sceGuDisplay(GU_TRUE);

 
    sprintf(buffer, "bg.png");
    bg = loadImage(buffer); 


    

                    
    if (!bg) {
                    //Image load failed
                    printf("Image load failed!\n");
           } else { 
                    int x = 0;
                    int y = 0;
                    sceDisplayWaitVblankStart(); 
                    while (x < 480) {
                              while (y < 272) {
                                    blitAlphaImageToScreen(0 ,0 ,480 , 272, bg, x, y);
                                        y += 272;
                              } 
                              x +=480;
                              y = 0;
                    } 
            
          } 
    
    flipScreen();
        while(1) {
		sceGuStart(GU_DIRECT, list);
		sceGuClear(GU_COLOR_BUFFER_BIT);

		/*
			No matrixes are needed because the font is drawn with GU_TRANSFORM_2D
		*/

		drawString("Hello World in red",   0,  0, 0xFF0000FF, 0);
		drawString("Hello World in green", 0, 16, 0xFF00FF00, 0);
		drawString("Hello World in blue",  0, 32, 0xFFFF0000, 0);

		drawString("Hello World with free char width",     0, 64, 0xFFFFFFFF, 0);
		drawString("Hello World with block char width 10", 0, 80, 0xFFFFFFFF, 10);
		drawString("Hello World with block char width 12", 0, 96, 0xFFFFFFFF, 12);

		drawString("Hello World with opacity 100%", 0, 128, 0xFFFFFFFF, 0);
		drawString("Hello World with opacity  50%", 0, 144, 0x7FFFFFFF, 0);
		drawString("Hello World with opacity  10%", 0, 160, 0x18FFFFFF, 0);

		drawString("Hello World with shadow", 2, 194, 0x40FFFFFF, 0);
		drawString("Hello World with shadow", 0, 192, 0xFFFFFFFF, 0);

		static float t = 0.0f;
		t += 0.1f;

		unsigned int c = 0xFF000000 |
			(unsigned int)((sinf(t * 0.393f + 0.086f) / 2.0f + 0.5f) * 255.0f) << 16 |
			(unsigned int)((sinf(t * 0.444f + 0.854f) / 2.0f + 0.5f) * 255.0f) <<  8 |
			(unsigned int)((sinf(t * 0.117f + 1.337f) / 2.0f + 0.5f) * 255.0f) <<  0;

		drawString("Hello World from pspdev", 0, 224, c, 0);

		sceGuFinish();
		sceGuSync(0, 0);

		sceDisplayWaitVblankStart();
		sceGuSwapBuffers();
	}

	sceGuDisplay(GU_FALSE);
	sceGuTerm();   
            
                              
                    flipScreen();

                   
                              sceDisplayWaitVblankStart();
          


          return 0;
}

[FaT3oYCG]

search about oslib

[yaustar]

Umm ok I have one more question, how do you put text over an image that you blitted to the screen? When I try to do it using the font sample included in the samples, It works but The image doesn't show up in the background, and well , the text is parts of the image.

Look at what your code is doing line by line. If you don't understand the code that you yourself have written, then there is no point telling what is wrong with it.

[Zack_PSP]

Setting up cygwin is easy. I cannot understand how so many people have issues with it.

I will do up a guide when I get time to explain it step by step. It really isn't hard.