C/C++ Programming Help Thread

[TurtlesPwn]

If you have the SDK downloaded, you can look in the samples folder for samples of most of the functions in use. There is also extensive documentation here: http://psp.jim.sh/pspsdk-doc/

But do listen to dysfunctional and get acquainted with the language. If you only know two psp-specific functions, you have a long ways to go and should go back to the PC first.

[BlackBurd]

You obviously have no knowledge of C or C++, so before you even touch the PSP, I would suggest you go buy a nice book on C++ and download the Visual C++ Express. Get used to it, program on the PC for a while. Once you actually understand C++, you'll understand that you can just look in the SDK headers to find the function you want. Of course, without any knowledge of C++, it won't make any sense now. So, get to it, get reading.

i actually know some c programming language and own 4 books and 2 ebooks on the subject i tried doing void function(void) like that but it doesnt compile correctly for me so i usually use #include "function.c" and then call the function from the app but i think it would be more easy to use subs instead. (im used to old school. I still use basic alot )

anyways i was speaking about what exactly they do if i just look at the header files they usually dont say what they do in lamens terms.

[_dysfunctional]

Like I said, you don't know the language. Go read those books.

[yaustar]

i actually know some c programming language and own 4 books and 2 ebooks on the subject i tried doing void function(void) like that but it doesnt compile correctly for me so i usually use #include "function.c" and then call the function from the app but i think it would be more easy to use subs instead. (im used to old school. I still use basic alot )

anyways i was speaking about what exactly they do if i just look at the header files they usually dont say what they do in lamens terms.

Looking at the code snippet you posted, subs are functions, not separate 'apps'. Have a read of this article:

http://www.gamedev.net/reference/art...rticle1798.asp

Here is the C++ equivalent of your Basic code

#include <iostream>
#include <string>

void thq()
{
	std::cout << "noobs are cool =}" << std::endl;
}

int main()
{
	std::cout << "hello qj.net this is an example" << std::endl;
	string input; 
	 
	std::cout << "are you a noob? YES or NO" << std::endl;
	cin >> input;
	if( "YES" == input )
	{
		thq();
	}
	else if( "NO" == input )
	{
		std::cout << "thats good for you" << std::endl;
	}
}

[Durka Durka Mahn]

Does anyone know how to fill the screen with a color in a PRX? I'm freezing the game with my hex editor and it causes "sticky printing" because the screen doesn't refresh.

[BlackBurd]

Looking at the code snippet you posted, subs are functions, not separate 'apps'. Have a read of this article:

http://www.gamedev.net/reference/art...rticle1798.asp

Here is the C++ equivalent of your Basic code

#include <iostream>
#include <string>

void thq()
{
	std::cout << "noobs are cool =}" << std::endl;
}

int main()
{
	std::cout << "hello qj.net this is an example" << std::endl;
	string input; 
	 
	std::cout << "are you a noob? YES or NO" << std::endl;
	cin >> input;
	if( "YES" == input )
	{
		thq();
	}
	else if( "NO" == input )
	{
		std::cout << "thats good for you" << std::endl;
	}
}

I know but i was asking if there was a work around because it wont compile it only lets me use the main function.

ive been using #include "random.c"
and calling the function from the main function.
i dunno why it wont compile.

[yaustar]

I know but i was asking if there was a work around because it wont compile it only lets me use the main function.

ive been using #include "random.c"
and calling the function from the main function.
i dunno why it wont compile.

There is no 'workaround'. That is the actual code for one source file.

If you are going to use multiple files for organisation purposes, then read the previous article I linked to from GameDev.

It is important that you understand the build process of the executable.
http://www.tenouk.com/ModuleW.html

What IDE are you using?

[BlackBurd]

Put all the source in one file. If you are going to use multiple files for organisation purposes, then read the previous article I linked to from GameDev.

It is important that you understand the build process of the executable.
http://www.tenouk.com/ModuleW.html

What IDE are you using?

im using notepad and cygwin.
No ide but should i be using one i have visuall c++ but i dont use it for psp related things.

I also have notepad ++
again i dont use that for psp either.

[yaustar]

im using notepad and cygwin.
No ide but should i be using one i have visuall c++ but i dont use it for psp related things.

I also have notepad ++
again i dont use that for psp either.

Then if is even more important to understand the build process and have some knowledge on makefiles.

Also, learn what #include actually does: http://gcc.gnu.org/onlinedocs/cpp/In...lude-Operation

I don't understand why at this stage of learning that you are splitting your source files. As I said, the code I have shown you is for one source file. If you are going to start using multiple files, read the article I linked to.

[BlackBurd]

Then if is even more important to understand the build process and have some knowledge on makefiles.

Also, learn what #include actually does: http://gcc.gnu.org/onlinedocs/cpp/In...lude-Operation

I don't understand why at this stage of learning that you are splitting your source files. As I said, the code I have shown you is for one source file. If you are going to start using multiple files, read the article I linked to.

I know what include does i know it takes the code and adds it to the first source file but cygwin wont compile it when i stick it all in one file i tried putting it in a different order and things like that but it wont work.

i dont know if its just cygwin because ive done it alright with windows pspsdk but i cant install the librarys i use with cygwin on it.

[Durka Durka Mahn]

If you're coding in C/C++ on the computer and not the PSP first, you shouldn't be using Cygwin to compile your programs. Try using something like Dev-C++ or MS VC++.
-=Double Post Merge =-

Does anyone know how to fill the screen with a color in a PRX? I'm freezing the game with my hex editor and it causes "sticky printing" because the screen doesn't refresh.

Anyone...?

[yaustar]

I know what include does i know it takes the code and adds it to the first source file but cygwin wont compile it when i stick it all in one file i tried putting it in a different order and things like that but it wont work.

i dont know if its just cygwin because ive done it alright with windows pspsdk but i cant install the librarys i use with cygwin on it.

Telling us cygwin won't compile doesn't help. How did you compile it? What was the exact error message(s)?

If we just talking about developing on the PC for the PC, then download Code::Blocks with mingw. It make your life much easier:
http://www.codeblocks.org/

[malliet]

I have a menu code but it doesn't work. Can someone help me out with fixing the problem? This is my code:

int menu()                                             //                     
{                                                          //                     
                                                           //                         
    pspDebugScreenClear();                                 // Clear the Screen
                                                           //
    pspDebugScreenSetXY(0 , 0);                            //Set current pixel to 0,0
                            //
                                                           //
     int currentSelection = 0;
     SceCtrlData pad;
     int selecting = true;
    int loop;
     char *menuOption[3] = {  "START" ,
                               "EXIT"
                               };
     while(selecting)
     {
             pspDebugScreenClear();
             for(loop=0; loop<2; loop++)
             {
                         pspDebugScreenSetXY(16 , 15+loop);
                         if(loop != currentSelection) printf("   %s" , menuOption[loop]);
                         else  printf("=> %s" , menuOption[loop]);
                         }
             while(selecting)
             {
                     sceCtrlPeekBufferPositive(&pad, 1);
                     if(pad.Buttons & PSP_CTRL_UP)
                     {
                                     if(!pressed)
                                     {
                                                       (currentSelection == 0) ? currentSelection = 1 : currentSelection--; 
                                                       buttonPressed = true;
                                                       break;
                                                       }
                                      }
                     else if(pad.Buttons & PSP_CTRL_DOWN)
                      {
                                     if(!pressed)
                                     {
                                                       (currentSelection == 1) ? currentSelection = 0 : currentSelection++; 
                                                       buttonPressed = true;
                                                       break;
                                                       }
                                     }
                     else if(pad.Buttons & PSP_CTRL_CROSS)
                     {
                          if(currentSelection == 0)
                          {
                                             start();
                                              }
                          else if(currentSelection == 1)  
                          {
                              exit();
                               }
                          }
                     else
                     {
                          pressed = false;
                          }
                     }//end while
             }//end while
    return 0;                                              //
}                                                          //By bY

[Durka Durka Mahn]

What exactly doesn't work..?

[malliet]

What exactly doesn't work..?

I doesn't want to compile to a eboot. I gives me this error:

[Davee]

#include <pspctrl.h>

[malliet]

#include <pspctrl.h>

Still doesn't work:

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


int menu()                                             //                     
{                                                          //                     
                                                           //                         
    pspDebugScreenClear();                                 // Clear the Screen
                                                           //
    pspDebugScreenSetXY(0 , 0);                            //Set current pixel to 0,0
                            //
                                                           //
     int currentSelection = 0;
     SceCtrlData pad;
     int selecting = true;
    int loop;
     char *menuOption[3] = {  "START" ,
                               "EXIT"
                               };
     while(selecting)
     {
             pspDebugScreenClear();
             for(loop=0; loop<2; loop++)
             {
                         pspDebugScreenSetXY(16 , 15+loop);
                         if(loop != currentSelection) printf("   %s" , menuOption[loop]);
                         else  printf("=> %s" , menuOption[loop]);
                         }
             while(selecting)
             {
                     sceCtrlPeekBufferPositive(&pad, 1);
                     if(pad.Buttons & PSP_CTRL_UP)
                     {
                                     if(!pressed)
                                     {
                                                       (currentSelection == 0) ? currentSelection = 1 : currentSelection--; 
                                                       buttonPressed = true;
                                                       break;
                                                       }
                                      }
                     else if(pad.Buttons & PSP_CTRL_DOWN)
                      {
                                     if(!pressed)
                                     {
                                                       (currentSelection == 1) ? currentSelection = 0 : currentSelection++; 
                                                       buttonPressed = true;
                                                       break;
                                                       }
                                     }
                     else if(pad.Buttons & PSP_CTRL_CROSS)
                     {
                          if(currentSelection == 0)
                          {
                                             start();
                                              }
                          else if(currentSelection == 1)  
                          {
                              exit();
                               }
                          }
                     else
                     {
                          pressed = false;
                          }
                     }//end while
             }//end while
    return 0;                                              //
}                                                          //By bY

Here's the error:



Can someone just post a new menu that works?

[BlackBurd]

can someone post a menu that works.

Here ( a project i gave up on.)

#include <pspkernel.h>
#include <pspcallbacks.h>
#include <pspctrl.h>
#include "graphics.h"
#include "game.c"


#define printf printTextScreen

#define RGB(r, g, b) ((r)|((g)<<8)|((b)<<16))

PSP_MODULE_INFO("Menu Example",0,1,1);
Color white = RGB(255,255,255), red = RGB(255,0,0), black = RGB(0,0,0);

enum {START, CONTROLS, CREDITS, EXTRAS, CONTACT, STORY, MEDALS, EXIT};

char menuItems[8][25] = {
{"START"},
{"CONTROLS"},
{"CREDITS"},
{"EXTRAS"},
{"CONTACT"},
{"STORY"},
{"MEDALS"},
{"EXIT"},
};
int timer,select,foo;
SceCtrlData pad;

void executeMenu(int select)
{
	switch(select)
	{
		case START:
                        game();
			break;
		case CONTROLS:
			break;
		case CREDITS:
			break;
		case EXTRAS:
			break;
		case CONTACT:
			break;
		case STORY:
			break;
		case MEDALS:
			break;
		case EXIT:
			sceKernelExitGame();
			break;
		default:
			return;
	}
	return; // suppress compiler warning
}

int main() {
	Image* background = loadImage("Background.png");
	initGraphics();
	SetupCallbacks();
	while(1) {
		sceCtrlReadBufferPositive(&pad,1);
		blitAlphaImageToScreen(0,0,480,272,background,0,0);
		fillScreenRect(white,0,0,480,272);
		blitAlphaImageToScreen(0,0,480,272,background,0,0);
		timer++;
		for(foo=0;foo<10;foo++) {printf(200,foo*8+70,menuItems[foo],black);}

		printf(201,select*8+70,menuItems[select],red);

		if((pad.Buttons & PSP_CTRL_UP) && (timer > 6) && (select > 0)) {select--;timer = 0;}

		else if ((pad.Buttons & PSP_CTRL_DOWN) && (timer > 6) && (select < 7)) {select++;timer = 0;}

		else if (pad.Buttons & PSP_CTRL_CROSS){executeMenu(select);}

		flipScreen();
	}
	return 0;
}

Ohh and thanks yauster i got it working correctly now.

[_dysfunctional]

Can someone stop copying code and try to learn how to program for themselves?

[malliet]

Thanks Blackburd

[BlackBurd]

Thanks Blackburd

Also if you want all the stuff i used with this menu fully compilable you can download it here.
http://www.megaupload.com/?d=NWPJX4ZF

thats the icon0 icon1 and snd0
and the main.c and game.c

[malliet]

I'll take a look at it.

[Durka Durka Mahn]

Still doesn't work:

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


int menu()                                             //                     
{                                                          //                     
                                                           //                         
    pspDebugScreenClear();                                 // Clear the Screen
                                                           //
    pspDebugScreenSetXY(0 , 0);                            //Set current pixel to 0,0
                            //
                                                           //
     int currentSelection = 0;
     SceCtrlData pad;
     int selecting = true;
    int loop;
     char *menuOption[3] = {  "START" ,
                               "EXIT"
                               };
     while(selecting)
     {
             pspDebugScreenClear();
             for(loop=0; loop<2; loop++)
             {
                         pspDebugScreenSetXY(16 , 15+loop);
                         if(loop != currentSelection) printf("   %s" , menuOption[loop]);
                         else  printf("=> %s" , menuOption[loop]);
                         }
             while(selecting)
             {
                     sceCtrlPeekBufferPositive(&pad, 1);
                     if(pad.Buttons & PSP_CTRL_UP)
                     {
                                     if(!pressed)
                                     {
                                                       (currentSelection == 0) ? currentSelection = 1 : currentSelection--; 
                                                       buttonPressed = true;
                                                       break;
                                                       }
                                      }
                     else if(pad.Buttons & PSP_CTRL_DOWN)
                      {
                                     if(!pressed)
                                     {
                                                       (currentSelection == 1) ? currentSelection = 0 : currentSelection++; 
                                                       buttonPressed = true;
                                                       break;
                                                       }
                                     }
                     else if(pad.Buttons & PSP_CTRL_CROSS)
                     {
                          if(currentSelection == 0)
                          {
                                             start();
                                              }
                          else if(currentSelection == 1)  
                          {
                              exit();
                               }
                          }
                     else
                     {
                          pressed = false;
                          }
                     }//end while
             }//end while
    return 0;                                              //
}                                                          //By bY

Here's the error:



Can someone just post a new menu that works?

The compiler tells you exactly what is wrong. Apparently you didn't declare most of the variables you have..And C doesn't have boolean variables (true/false) like C++ does. You have to either define it or use unsigned char and switch it between 0 (false) and a non zero (true).

[NoEffex]

Can someone stop copying code and try to learn how to program for themselves?

Can you be of assistance rather than constantly ***** about the obvious?

[_dysfunctional]

Honestly? No.

I've been in this seen far longer than you have and I understand that being nice to people doesn't get anything done. The average noob will rather take code of another noob, instead of listening to my advice.

So, why don't you stop posting obvious trolls just to make it look like you are a badass on QJ. No one cares.

The reason I don't baby people on the internet is because if you do, you will get ignored. If you have such a problem with that, why don't you just work it out in a place i don't have to see it?

The kid above obviously has no knowledge of C, or else he would have at least known to read the errors so gracefully given by the compiler. Giving him code does not solve the problem of him not knowing how to code.

[BlackBurd]

Excuse me sorry to interupt a fight but im trying to put my psp into sleep mode from a app im making does anyone know if theres a premade function that will do that and if not how would i go about implementing this into my code in (c).

[Access_Denied]

Can you be of assistance rather than constantly ***** about the obvious?

No, because he's absolutely right. People need to quit asking for people to write code for them, and get off their ass and do some searching and coding of their own. Programmers are getting lazier every damn day.

Excuse me sorry to interupt a fight but im trying to put my psp into sleep mode from a app im making does anyone know if theres a premade function that will do that and if not how would i go about implementing this into my code in (c).

The above goes for you. It's really not that hard to find.

http://psp.jim.sh/pspsdk-doc/psppower_8h.html

[BlackBurd]

No, because he's absolutely right. People need to quit asking for people to write code for them, and get off their ass and do some searching and coding of their own. Programmers are getting lazier every damn day.



The above goes for you. It's really not that hard to find.

http://psp.jim.sh/pspsdk-doc/psppower_8h.html

i havent asked any one to write anything for me at all i was just asking because i looked through pages of google and maybe i didnt search for it correctly but i couldnt find alot of sites with alot of the usable functions that have sce meaning its from sony. Im sorry if i didnt portray that correctly And thanks that link did help a lilbit.

besides i actually tried this function scePowerRequestStandby(); and including pspkerneltypes.h and it dint work.
it said no such function on cygwin and minimalist pspsdk.

[_dysfunctional]

This is what we are talking about. You can't just expect us to write and fix code for you.

Did you even bother to open up pspkerneltypes.h so you could find for yourself that you were including the wrong header? I guess not.

Try psppower.h.

[Durka Durka Mahn]

This is what we are talking about. You can't just expect us to write and fix code for you.

Did you even bother to open up pspkerneltypes.h so you could find for yourself that you were including the wrong header? I guess not.

Try psppower.h.

Most new PSP programmers don't know about looking into the header files, or even where they are for that matter.. (I didn't until a friend of mine showed me)