[TUT] Beginner C Programming Tutorials

[Yamagushi]

In Tutorial 5 you get an implicit use of RGB.

To fix the issue simply add the following to the list of defines;

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

[Access_Denied]

Originally Posted by Yamagushi

In Tutorial 5 you get an implicit use of RGB.

To fix the issue simply add the following to the list of defines;

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

Thanks for pointing that out. I believe in the original tutorial I had a download link for the graphics.c that already included this definition. I'll add this in there now.

[slasher101]

Stickied

[hezware]

Sorry but im a noob, I understand most except when you have to compile? Where do I gety Cygwin to compile with from?

[FaT3oYCG]

search for MinPSPW it is much easier to use and there is a tutorial here:
Beginning Programming Tutorials for Windows

[Access_Denied]

Originally Posted by FaT3oYCG

search for MinPSPW it is much easier to use and there is a tutorial here:
Beginning Programming Tutorials for Windows

I'm currently using DevKitPSP. Which would be better, MinPSPW or DevKitPSP? Obviously nobody uses Cygwin anymore.

[slasher101]

Wow man... DevKitPSP is like 5 years outdated.

[Access_Denied]

Originally Posted by slasher101

Wow man... DevKitPSP is like 5 years outdated.

Meh, it's only 2 and a half years old. It works for what I want to do, so I'm not really compelled to install MinPSPW. The PSP scene was better 2 years ago anyway, therefore using DevKitPSP is better.

[pentagram]

Originally Posted by Access_Denied

Hello, and welcome to the newest tutorial. Today, I'll be teaching you how to make a menu. I realize that I said this would be a sound tutorial, but it's not. I'm investigating MP3 decoding, this way, I can use my own code, rather than use someone else's. So, this tutorial is all about a menu. It'll be quick, clean and easy to understand. So, let's get to it. We'll be using the graphics library again, so put those four files in your project folder.

#include <pspkernel.h>
#include <pspcallbacks.h>
#include <pspctrl.h>
#include "graphics.h"
 
#define RGB(r, g, b) ((r)|((g)<<8)|((b)<<16))
 
PSP_MODULE_INFO("Menu Example",0,1,1);

...


Finally, use an old Makefile from the image tutorial, then compile and run. If all goes well, you should have a working example. To make clickable items, do something like this:

if((pad.Buttons & PSP_CTRL_CROSS) && (select == 9)) {
//blah blah, this will exit the game, since menuItems[9] = "Exit"
}

See you in the next tutorial.

Administrator@power ~/projects/meniu
$ make
psp-gcc -I. -I/usr/local/pspdev/psp/sdk/include -O2 -G0 -Wall -D_PSP_FW_VERSION=
150  -L. -L/usr/local/pspdev/psp/sdk/lib   main.o graphics.o framebuffer.o -lpsp
gu -lpng -lz -lm -lpspdebug -lpspdisplay -lpspge -lpspctrl -lpspsdk -lc -lpspnet
 -lpspnet_inet -lpspnet_apctl -lpspnet_resolver -lpsputility -lpspuser -lpspkern
el -o image.elf
main.o: In function `main':
main.cpp:(.text+0x84): undefined reference to `initGraphics()'
main.cpp:(.text+0xdc): undefined reference to `fillScreenRect(unsigned int, int,
 int, int, int)'
main.cpp:(.text+0x114): undefined reference to `printTextScreen(int, int, char c
onst*, unsigned int)'
main.cpp:(.text+0x15c): undefined reference to `printTextScreen(int, int, char c
onst*, unsigned int)'
main.cpp:(.text+0x1a8): undefined reference to `flipScreen()'
main.cpp:(.text+0x1e8): undefined reference to `flipScreen()'
collect2: ld returned 1 exit status
make: *** [image.elf] Error 1

Here is what i get. Makefile is from Images.

[Access_Denied]

Originally Posted by pentagram

Administrator@power ~/projects/meniu
$ make
psp-gcc -I. -I/usr/local/pspdev/psp/sdk/include -O2 -G0 -Wall -D_PSP_FW_VERSION=
150  -L. -L/usr/local/pspdev/psp/sdk/lib   main.o graphics.o framebuffer.o -lpsp
gu -lpng -lz -lm -lpspdebug -lpspdisplay -lpspge -lpspctrl -lpspsdk -lc -lpspnet
 -lpspnet_inet -lpspnet_apctl -lpspnet_resolver -lpsputility -lpspuser -lpspkern
el -o image.elf
main.o: In function `main':
main.cpp:(.text+0x84): undefined reference to `initGraphics()'
main.cpp:(.text+0xdc): undefined reference to `fillScreenRect(unsigned int, int,
 int, int, int)'
main.cpp:(.text+0x114): undefined reference to `printTextScreen(int, int, char c
onst*, unsigned int)'
main.cpp:(.text+0x15c): undefined reference to `printTextScreen(int, int, char c
onst*, unsigned int)'
main.cpp:(.text+0x1a8): undefined reference to `flipScreen()'
main.cpp:(.text+0x1e8): undefined reference to `flipScreen()'
collect2: ld returned 1 exit status
make: *** [image.elf] Error 1

Here is what i get. Makefile is from Images.

Sorry I didn't get back to you, I'm not here that often. But it seems like your problem would be that you are using main.cpp instead of main.c. I've never used C++ for the PSP, so I don't exactly know what has to be changed in order for it to work. (I'm guessing you need to add libraries and whatnot.)

[slasher101]

Originally Posted by Access_Denied

Sorry I didn't get back to you, I'm not here that often. But it seems like your problem would be that you are using main.cpp instead of main.c. I've never used C++ for the PSP, so I don't exactly know what has to be changed in order for it to work. (I'm guessing you need to add libraries and whatnot.)

Your main is main.cpp
and graphics is only graphics.c

Thats why

[pentagram]

How to return to the main menu ?

if((pad.Buttons & PSP_CTRL_CROSS) && (select == 0)) {

	
MY CODE

    }
printf("\n Apasati O pentru a reveni la meniu."); 
	
	if(pad.Buttons & PSP_CTRL_CROSS)
	return main();
	
	
	sceKernelSleepThread();
	


}

Something wrong?

[slicer4ever]

Originally Posted by pentagram

How to return to the main menu ?

if((pad.Buttons & PSP_CTRL_CROSS) && (select == 0)) {

	
MY CODE

    }
printf("\n Apasati O pentru a reveni la meniu."); 
	
	if(pad.Buttons & PSP_CTRL_CROSS)
	return main();
	
	
	sceKernelSleepThread();
	


}

Something wrong?

if your following his tutorials than he's left a crucial point out of the menu tutorial, which is state's, honestly these tutorials seem to go in different directions from one to the next after the 5th tutorial(i.e. player movement->arrays and loops?, copy files(heck, why copy files?)-> if/else/switch?!, from my glimpse over them, they should not be taken as ordered tutorials but more as independent tutorials)

however, here is an idea of what you must do:

#define MAINMENU 0
#define GAME 1
int main(int argc, char **argv){
    int GameState = MAINMENU;
    while(1){
        if(GameState==MAINMENU){
           //Menu code here
           if(/*Start Game if statement here*/) GameState=GAME;
        }else if(GameState==GAME){
             //Game Code
             if(/*return to menu if statement here*/) GameState=MAINMENU;
        }
    }
    return 0;
}

game states is very important to understand when making a game

[_df_]

the problem he has is he is doing "return main();" in the middle of his code...

[slicer4ever]

Originally Posted by _df_

the problem he has is he is doing "return main();" in the middle of his code...

that too, but i'm going on the fact that he's following the menu tutorial, which from reading it, it makes no connection is explaing how to enter into your game from the menu(and return to the menu), but simple how to make a menu that you can go up and down through

[pentagram]

Thanks for advices !

I`ve done it!

[Access_Denied]

Originally Posted by slicer4ever

that too, but i'm going on the fact that he's following the menu tutorial, which from reading it, it makes no connection is explaing how to enter into your game from the menu(and return to the menu), but simple how to make a menu that you can go up and down through

I never wrote a tutorial on how to switch from game to menu. Honestly, it's not that hard.

void game() {

if(buttons)
menu();

}

void menu() {
while(!done) {
//code
}
//breaks back to game() after loop in completed
}

You'll simply go right back to the game after menu is finished. If you need something more advanced than that, you'll have to use a bit of common sense and programming knowledge.

[slicer4ever]

Originally Posted by Access_Denied

I never wrote a tutorial on how to switch from game to menu. Honestly, it's not that hard.

and yet, someone asked a question about how to do it...

[Access_Denied]

Originally Posted by slicer4ever

and yet, someone asked a question about how to do it...

Right, because every question not only deserves to be answered, but to be answered in extreme detail.