C/C++ Programming Help Thread

[Insert_Witty_Name]

Posting all the errors would be the best option.

We can't see your screen from way over here.

[thecobra]

When i download that mod from http://svn2.assembla.com/svn/oslibmod/trunk
with svn checkout command then i do
cd trunk
then i do
make
then i get errors
Can u explain?

try downloading it using your web browser and clicking the link
after that excract the file with winrar or somtheing else

[Predricted]

try downloading it using your web browser and clicking the link
after that excract the file with winrar or somtheing else

Do I need to download that source to?
If yes how do I download it?
I've already downloaded the rar file, i just needed to download the svn with svn checkout and I think I need also to download the source but I dont know how.

[Predricted]

Posting all the errors would be the best option.

We can't see your screen from way over here.

Here is the screenshot:

[Insert_Witty_Name]

Install mikmod.

[Predricted]

Install mikmod.

I've installed mikmod still getting SAME errors, I've installed same as this guy on the ps2dev forum: http://forums.ps2dev.org/viewtopic.p...a145725347af27

[Predricted]

Error Lines 74 till 92 are fixed, I just need the last line to be fixed...

[thecobra]

Do I need to download that source to?
If yes how do I download it?
I've already downloaded the rar file, i just needed to download the svn with svn checkout and I think I need also to download the source but I dont know how.

you dont have to download the source code
just the rar and the extract it
after that just put everything where it belong in your pspsdk folder

[Khatharr]

I've been having some trouble with the "sceRtcGetCurrentClockLoc alTime" function from <psprtc.h>. I wrote a brief program to test whether it works at all and I keep getting a compiler error.

Here's the code: (callbacks and module info are in main.h)

#include <pspkernel.h>
#include <pspdebug.h>
#include <pspdisplay.h>
#include <pspctrl.h>
#include <psprtc.h>
#include "main.h"

int main() {
  pspDebugScreenInit();
  SetupCallbacks();
  pspTime now;
  while(1) {
    sceRtcGetCurrentClockLocalTime(&now);
    pspDebugScreenClear();
    pspDebugScreenPrintf("%i:%i", now.hour, now.minutes);
  }
}

and I keep getting this error:

main.o: In function `main':

main.c.text+0x78): undefined reference to `sceRtcGetCurrentClockLoc  alTime'

collect2: ld returned 1 exit status

make: *** [clock.elf] Error 1

Anyone know how I can get past this?

[slicer4ever]

make sure your linking to the rtc library

[Khatharr]

I don't know how to do that. Should I put something in the makefile? I don't understand why it wouldn't work the same way the other includes from the same library do. Sorry, I'm still sort of a noob.

[Insert_Witty_Name]

Add -lpsprtc to the LIBS line in your makefile.

[Khatharr]

Thanks, guys.

[MiKeY188]

Ok guys so say i wanted to make a hello world with an image. For example heres what i want it to do.

instead of the text hello world!
i want it to be an image saying hello world!
ok so would i do this?

#include <pspkernel.h> // PSP kernel functions include file.
#include <pspdebug.h> // PSP debug functions include file.

// Set the Application Information 
PSP_MODULE_INFO("Hello World", 0, 1, 1);

#define printf pspDebugScreenPrintf

// Exit Callback
int exit_callback(int arg1, int arg2, void *common)
{
	sceKernelExitGame(); // Exit the app
	return 0;
}

// Callback thread.

int CallbackThread(SceSize args, void *argp)
{
	// Local vars
	int cbid;

	// Create the exit callback in for the PSP shell.
	cbid = sceKernelCreateCallback("Exit Callback", exit_callback, NULL);
	sceKernelRegisterExitCallback(cbid);

	// Sleep the kernel until we tell it to exit.
	sceKernelRegisterExitCallback(cbid);

	//NEW
	sceKernelSleepThreadCB();

	// Return success.
	return 0;
}

// Set up the callback thread and return the thread ID.
int SetupCallbacks(void)
{
	// Local vars.
	int thid = 0; // ** Thread ID. **

	// Create the thread.
	thid = sceKernelCreateThread("update_thread", CallbackThread, 0x11, 0xFA0, 0, 0);
	if (thid >= 0)
	{
		sceKernelStartThread(thid, 0, 0);
	}

	//NEW
	return 0;
}

// Main Function.

int main()
{
	pspDebugScreenInit();
        SetupCallbacks();
        loadImage("HelloWorld.png");
	sceKernelSleepThread();
	return 0;
}

I know im doing something wrong if someone could fix the code or tell me what im doing wrong that would be great.

[eldiablov]

Go look at psp-programming for graphics tutorials or use oslib on large projects ...

[Archaemic]

*facepalm*

Loading an image means it goes into RAM. YOU ACTUALLY HAVE TO TELL IT TO DISPLAY THE PICTURE FOR IT TO GO ON THE SCREEN.

Also, the function loadImage is neither standard C nor in any of the headers you included.

[Insert_Witty_Name]

Follow all the tutorials, then come and ask if you still need help.

[MiKeY188]

Ok thanks guys i got it to work thanks eldiablov for the link to psp-programming.

[joseph10444]

so what header has loadImage and image display?

[coolguy5678]

graphics.h. Or oslib/oslib.h if you're using oslib (the function's not called loadImage then). Or... (insert any library you want here).

[Predricted]

you dont have to download the source code
just the rar and the extract it
after that just put everything where it belong in your pspsdk folder

What rar file must I downoad Oslib mod V1.0.1, do I only need that one?
And after i've put oslib.a and all the other files at the right place what must i do then?

[thecobra]

What rar file must I downoad Oslib mod V1.0.1, do I only need that one?

yes that one only and ofcourse pspsdk

And after i've put oslib.a and all the other files at the right place what must i do then?

just look for tutoring of oslib to know how to program with it and the just have fun programming

[Predricted]

yes that one only and ofcourse pspsdk




just look for tutoring of oslib to know how to program with it and the just have fun programming

So thats all?
I do not need to open cygiwn typ make install and stuff?
well then I am ready to use it

[coolguy5678]

Hi. I'm working on a new version of 4^2, and I'd like it to be slim compatible. My PSPSDK is outdated so I can't compile it for the 3.90 kernel myself. I'd update it, but bandwidth isn't exactly cheap where I live, and AFAIK updating the PSPSDK is a fairly large download (installing it in the first place was). So I need someone to compile it for the 3.90 kernel. I would send you the source when its ready, and you would send back the EBOOT. AFAIK, all you'd need to do is change the makefile and type make. I'd give you credit.

EDIT: nvm, turns out that by some fluke it happens to work on the slim anyway :) .

[Anti-QuickJay]

I can do it.

Anyways, I'm making a PRX file and I want it to take up all memory so that other PRXs loaded from seplugins wont be able to run at the same time.
Possible?

[Mr305]

I can do it.

Anyways, I'm making a PRX file and I want it to take up all memory so that other PRXs loaded from seplugins wont be able to run at the same time.
Possible?

Just create a User mode prx and beef it up with bin2o'ed binaries then..
Make it launch a kernel mode prx that grabs all Kernel Heap space. :ROFL:

[Moca]

... that would be stupid. Not sure whether the path for a prx is stored in memory when you load it... but if it is then you can search through all the loaded modules and kill them 1 by one.

Or, you can:
* Read vsh/game.txt in seplugins into an array. Hook sceKernelLoadModule or whatever loads prxes. Each time a file is loaded, loop through all files in vsh/game.txt and return without executing the file.

This is all assuming that your prx is loaded first. You could reorganize the vsh/game.txt then reboot the PSP so that your plugin is loaded first as a temporary solution.

[thecobra]

So thats all?
I do not need to open cygiwn typ make install and stuff?
well then I am ready to use it

then yes you are ready but make sure you read some tutoring

[Insert_Witty_Name]

I can do it.

Anyways, I'm making a PRX file and I want it to take up all memory so that other PRXs loaded from seplugins wont be able to run at the same time.
Possible?

I would consider what Moca has said about this.

Regardless, to take up all available memory just set PSP_HEAP_SIZE_MAX().

[Khatharr]

I've placed a 'free memory report' in a project I'm working on and it
seems to work fine. It queries sceKernelTotalFreeMemSize () from
<pspsysmem.h> and returns a uint with the number of free bytes.
I'm curious, though as it seems that it always reports the same number,
being 1032192. I wondered if it was doing that just because my program
was allocating specifically that much memory and then not any more or
less as it ran (which would be odd), so I made a note of the number and
continued developing. However, now I've added two char arrays and
changed some of the routines and when I run the program it still reports
1032192 bytes free. Is this simply reporting the amount of memory not
allocated to my heap and stack? My intention for this feature is to sort
of keep track of how much memory I'm not using. I suppose both stack
and non-allocated, though I suppose I'd want to look at them seperately.
I intend to use it primarily as a debugging tool so I can see the impact of
mallocs and such, as I'm about to implement a system that will create an
unknown number of structs (for tracking net player info) and it will need
to keep track of its memory-use to prevent crashes. I also want to have
this thing as RAM optimized as possible before I implement said system
and I was hoping to use this method of memory reporting to keep track
of that. Any advice on how to properly use this or other useful functions?