Quick Jump Daily Digest

**basfreak** · 08-29-2008, 11:30 PM

Where does it belong?

**Anti-QuickJay** · 08-30-2008, 01:36 AM

When you download oslib it should come with a .bat file that will install it.
IIRC you had to edit it to install in the right drive as it installed in D. So normally you would change it to install it to C:\pathToSdk

**basfreak** · 08-30-2008, 06:38 AM

Ok, dont know where i downloaded it. Can someone post a good link?

**xXChromeXx** · 08-30-2008, 07:01 AM

Use Google. Seriously you will find it easily just search oslib.

**Moose** · 08-30-2008, 07:02 AM

http://brunni.palib.info/new/index.p...=pspsoft_oslib

**eldiablov** · 08-30-2008, 07:10 AM

Zitat von xXChromeXx

Use Google. Seriously you will find it easily just search oslib.

To be fair there are two versions of oslib. One is a wierd lib for PC that I am unsure of. It's the first thing I found when I googled oslib.

**xXChromeXx** · 08-30-2008, 07:34 AM

Zitat von eldiablov

To be fair there are two versions of oslib. One is a wierd lib for PC that I am unsure of. It's the first thing I found when I googled oslib.

Yes the psp one is just a bit down the page but whatever moose helped him.

**Monkit** · 08-30-2008, 07:48 AM

hi hi :)

those guys at psp-hacks forum ignored me... T.T I am moving here for good... WOOO!

They didn't seem to answer any of my questions at all no replies.. anyway not a ranting thread lolz.

Have been using OSLIB for awhile, this is my first psp homebrew >.< don't laugh :ROFL:

Anyway.. how lag is 4.810 for the benchmark test inside Oslib version 2?

I am currently making a ragdoll style game. Because I suck at drawing so much, drawing so many frames to just make 1 character move is too much for me... Gonna have tons and tons of them. But the bad thing is psp's limitation. Not sure if it could take it though.

made that character through body parts, the parts are attached to body points. The parts rotate as well that is why it is lagging.

So my question will be is 4.810 lag? And why does it crash when I mirror the image horizontally? It can mirror if I don't rotate the images but crash if I mirror it. mirroring them vertically after or before rotation has no problem though... I wonder if OSLIB is buggy...

if it is that laggy and buggy, should i stop using OSLIB and start programming in its own c++ language using graphics.h?

**michaelp** · 08-30-2008, 08:58 AM

What do you mean by 4.810 lag? FPS?
And don't switch from OSLib to graphics.c/h, your program will get even slower.

**Monkit** · 08-30-2008, 09:15 AM

because oslib has a benchmarkshow();

something like that. but i am not too sure if it is frames per second of anything like that. It says if it goes beyond 16 then 60 fps is impossible

**basfreak** · 08-30-2008, 09:29 AM

ehm...:

Spoiler for spoiler:

**SG57** · 08-30-2008, 12:51 PM

Monkit I assure you it isn't an Oslib problem, you'll need to post some code, it'd help if you could debug it with PSPLink and trace it back to the exact line causing the crash...

**_dysfunctional** · 08-30-2008, 02:14 PM

That's a compilation error, SG.

**Insert_Witty_Name** · 08-30-2008, 03:07 PM

Looks like you need to link -lmmio.

**basfreak** · 08-30-2008, 11:44 PM

Hmm.. There isnt anything wrong with this code isnt it?

Code:

#include <pspkernel.h> 
#include <pspdebug.h>
#include <pspctrl.h>
#include <psppower.h>

PSP_MODULE_INFO("HelloWorld", 0, 1, 0);
PSP_HEAP_SIZE_MAX();


int main() {
    SceCtrlData pad;
    
    sceCtrlReadBufferPositive(&pad, 1);
    
    //int statement = (pad.Buttons & PSP_CTRL_SQUARE) && (pad.Buttons & PSP_CTRL_TRIANGLE);
    
    if(pad.Buttons & PSP_CTRL_SQUARE) {
                  //dosomething
    } else {
                  //dosomething
    }             
    
    sceKernelSleepThread();
    return 0;
}

Code:

TARGET = LockedUP
OBJS = main.o

CFLAGS = -O2 -G0 -Wall
CXXFLAGS = $(CFLAGS) -fno-exceptions -fno-rtti
ASFLAGS = $(CFLAGS)

BUILD_PRX = 1
PSP_FW_VERSION = 401

LIBDIR =
LDFLAGS =
STDLIBS= -lpspsdk -lpspctrl -lpsppower

LIBS=$(STDLIBS)$(YOURLIBS)

EXTRA_TARGETS = EBOOT.PBP
PSP_EBOOT_TITLE = LockedUP

PSPSDK=$(shell psp-config --pspsdk-path)
include $(PSPSDK)/lib/build.mak

(PRX)

But why does it crash?

**NoEffex** · 08-31-2008, 12:28 AM

It doesn't look like you've created the threads.

**basfreak** · 08-31-2008, 12:45 AM

You mean the callback stuff?

**Access_Denied** · 08-31-2008, 06:45 AM

Zitat von basfreak

You mean the callback stuff?

What he means is that you can't just put BUILD_PRX=1 in your Makefile and use the same code. Some of the code has to be tweaked so it will actually function as a PRX. Google how to make one, and you should find a tutorial. It isn't that much harder, but there are a few key components that you need.

**Monkit** · 08-31-2008, 09:00 AM

Zitat von SG57

Monkit I assure you it isn't an Oslib problem, you'll need to post some code, it'd help if you could debug it with PSPLink and trace it back to the exact line causing the crash...

I don't know how to use psplink

But i placed oslDebug(); between each line to figure out what went wrong.

And I found that OSlib cannot draw horizontal mirrored images whose center X, Center Y and angle is not 0.

Code:

 
oslSetImageTileSize(TileSet,DrawX,DrawY,Set_W-Set_Fix,Set_H-Set_Fix);
    	if(FacingRight == false)
            {
            oslDebug("centerX = %d, centerY = %d, angle = %d", TileSet->centerX, TileSet->centerY,TileSet->angle);
            oslDebug("attempt to make center back to origin");
            TileSet->centerX=0;
            TileSet->centerY=0;
            TileSet->angle=0;
            oslDebug("Current centerX = %d, centerY = %d, angle = %d", TileSet->centerX, TileSet->centerY,TileSet->angle);
            oslDebug("Mirroring TileSet next");
            oslMirrorImageH(TileSet);
            oslDebug("mirror completed, testing draw mirror next,  hope it works");
            oslDrawImage(TileSet);}

I did this, it works. but if you change the angle or centerX or centerY, they crash at the drawing part. You can mirror but unable to draw it out. It is mirroring the tile.

The whole engine works perfectly fine, able to move left, right, up, down and buttons and stuff. But if I just try to mirror horizontally the TileSet when its center is not 0 and angle is not 0, it crashes upon drawing. Mirror vertical has no problems though.

could I send you the cpp file and help me do a psplink check? :humped: still think it is with oslib though.

**Access_Denied** · 08-31-2008, 02:23 PM

So, I found this random number function, but it doesn't seem to work. It always puts out the same number. Any ideas? :ROFL:

Code:

int getRandomNumber()
{
     return 3;
}

**Khatharr** · 08-31-2008, 02:51 PM

Is the number a random integer between 2 and 4 exclusive?

Try this one, it'll be more random within that range:

Code:

int getRandomNumber() {
  return (rand() % 1) + 3;
}

XD

**MoAShaun** · 08-31-2008, 06:37 PM

Hey, can someone post a screen shot function?

**Slasher** · 08-31-2008, 07:08 PM

Zitat von basfreak

Hmm.. There isnt anything wrong with this code isnt it?

Code:

#include <pspkernel.h> 
#include <pspdebug.h>
#include <pspctrl.h>
#include <psppower.h>

PSP_MODULE_INFO("HelloWorld", 0, 1, 0);
PSP_HEAP_SIZE_MAX();


int main() {
    SceCtrlData pad;
    
for(;;){
    sceCtrlReadBufferPositive(&pad, 1);
    
    //int statement = (pad.Buttons & PSP_CTRL_SQUARE) && (pad.Buttons & PSP_CTRL_TRIANGLE);
    
    if(pad.Buttons & PSP_CTRL_SQUARE) {
                  //dosomething
    } else {
                  //dosomething
    }             
}
    sceKernelSleepThread();
    return 0;
}

Code:

TARGET = LockedUP
OBJS = main.o

CFLAGS = -O2 -G0 -Wall
CXXFLAGS = $(CFLAGS) -fno-exceptions -fno-rtti
ASFLAGS = $(CFLAGS)

BUILD_PRX = 1
PSP_FW_VERSION = 401

LIBDIR =
LDFLAGS =
STDLIBS= -lpspsdk -lpspctrl -lpsppower

LIBS=$(STDLIBS)$(YOURLIBS)

EXTRA_TARGETS = EBOOT.PBP
PSP_EBOOT_TITLE = LockedUP

PSPSDK=$(shell psp-config --pspsdk-path)
include $(PSPSDK)/lib/build.mak

(PRX)

But why does it crash?

Make sure you put a loop around your button input, otherwise it will just run through it once and then sleep the thread. You also haven't declared your callbacks, so pressing the HOME button will do nothing.
-=Double Post Merge =-

Zitat von Access_Denied

What he means is that you can't just put BUILD_PRX=1 in your Makefile and use the same code. Some of the code has to be tweaked so it will actually function as a PRX. Google how to make one, and you should find a tutorial. It isn't that much harder, but there are a few key components that you need.

The only real difference is that when making a prx, the default stack is something like only 64kb. He addressed this though by making the default heap size to max.

**basfreak** · 08-31-2008, 09:42 PM

I've got it working already.
@above, I want it to be jst once on starup, like the recovery menu ;)

**Access_Denied** · 09-01-2008, 06:47 AM

Zitat von Slasher

The only real difference is that when making a prx, the default stack is something like only 64kb. He addressed this though by making the default heap size to max.

Oh, OK. I was under the impression that you had to mess with the exports in the Makefile, and the extra thread in the program.

**JaX3RiR** · 09-01-2008, 07:04 AM

Zitat von Access_Denied

So, I found this random number function, but it doesn't seem to work. It always puts out the same number. Any ideas? :ROFL:

Code:

int getRandomNumber()
{
     return 3;
}

Code:

int gen_rand(void)
/* Random number in range of 0 to 99 */
{
   int n;
   n=random(100);  /* n is random number in the range of 0 - 99 */
   return(n);
}

:ROFL:

**daaa57150** · 09-01-2008, 07:27 AM

Zitat von Monkit

because oslib has a benchmarkshow();

something like that. but i am not too sure if it is frames per second of anything like that. It says if it goes beyond 16 then 60 fps is impossible

you have your answer don't you? if it goes beyond 16 it's lagging, but oslib lets you configure frameskip so even at that point it's ok, 30fps is not bad.
I think that this number is the time in ms that your frame is taking to complete:
1000/60 = 16.666...
the 4.8 you have is really low you're not even close to a lag point.

**Davee** · 09-01-2008, 07:58 AM

Code:

int GetRandom(int min, int max)
{
	SceKernelUtilsMt19937Context ctx;
	
	u32 tick = sceKernelGetSystemTimeLow();
	sceKernelUtilsMt19937Init(&ctx, (u32)tick);
	
	return ((min + sceKernelUtilsMt19937UInt(&ctx)) % div);
}

**Monkit** · 09-01-2008, 08:03 AM

Zitat von Monkit

I don't know how to use psplink

But i placed oslDebug(); between each line to figure out what went wrong.

And I found that OSlib cannot draw horizontal mirrored images whose center X, Center Y and angle is not 0.

Code:

 
oslSetImageTileSize(TileSet,DrawX,DrawY,Set_W-Set_Fix,Set_H-Set_Fix);
    	if(FacingRight == false)
            {
            oslDebug("centerX = %d, centerY = %d, angle = %d", TileSet->centerX, TileSet->centerY,TileSet->angle);
            oslDebug("attempt to make center back to origin");
            TileSet->centerX=0;
            TileSet->centerY=0;
            TileSet->angle=0;
            oslDebug("Current centerX = %d, centerY = %d, angle = %d", TileSet->centerX, TileSet->centerY,TileSet->angle);
            oslDebug("Mirroring TileSet next");
            oslMirrorImageH(TileSet);
            oslDebug("mirror completed, testing draw mirror next,  hope it works");
            oslDrawImage(TileSet);}

I did this, it works. but if you change the angle or centerX or centerY, they crash at the drawing part. You can mirror but unable to draw it out. It is mirroring the tile.

The whole engine works perfectly fine, able to move left, right, up, down and buttons and stuff. But if I just try to mirror horizontally the TileSet when its center is not 0 and angle is not 0, it crashes upon drawing. Mirror vertical has no problems though.

could I send you the cpp file and help me do a psplink check? :humped: still think it is with oslib though.

anyone can help mi fix the tiling->mirror->centreX&Y->rotate and will not crash problem?

if can't then would:
compare to using tileset and cutting out all the tiles into 35x35 images and frequent loading and unloading them (.png), which one will have a better effect on the speed of the homebrew? (1 tileset compared to 7 images, or maybe even 14)

**yaustar** · 09-01-2008, 12:51 PM

Zitat von Davee

Code:

int GetRandom(int min, int max)
{
	SceKernelUtilsMt19937Context ctx;
	
	u32 tick = sceKernelGetSystemTimeLow();
	sceKernelUtilsMt19937Init(&ctx, (u32)tick);
	
	return ((min + sceKernelUtilsMt19937UInt(&ctx)) % div);
}

Bad. You are initialising the random number generator every time you call GetRandom. This will give you skewed numbers and depending on what the Init function call does, expensive especially if called multiple times per frame.

In addition:

Code:

return ((min + sceKernelUtilsMt19937UInt(&ctx)) % div);

div is undeclared and the logic is incorrect in getting a number between min and max.

Edit: Warning, untested code:

Code:

class RandomNumberGenerator
{
	public:
		explicit RandomNumberGenerator( u32 seed )
		{
			sceKernelUtilsMt19937Init( &m_MtContext, seed );
		}
		
		s32 GetNumber( s32 min, s32 max )
		{
			if( min >= max )
			{
				return min;
			}
			
			s32 difference = max - min + 1;
			s32 randNum = static_cast<s32>( sceKernelUtilsMt19937UInt(&m_MtContext) % difference);
			
			return (randNum + min);
		}
	
	private:
		SceKernelUtilsMt19937Context m_MtContext;
};




int main()
{
	// General PSP initialisation stuff
	//
	
	RandomNumberGenerator randomNumberGenerator( sceKernelGetSystemTimeLow() );
	
	while( some_flag )
	{
		randomNumberGenerator.GetNumber( 0, 10 );
		randomNumberGenerator.GetNumber( 1, 10 );
	}
}

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