GRRLib Forum / GRRLIB in C++ project

_CONEJO · 2008-06-23 21:12:35

I'm having some problems to compile GRRLIB 3.0 in a C++ project. With previous version it worked ok, but now, i'm having some weird problems.

I used the Makefile of GRRLIB 3.0 (and added 2 more libs at the end for the sound)
Everything is included but ...

I have to change from GRRLIB.c to GRRLIB.cpp (yes, thats strange, but it there're any .cpp file on the project, .c files are ignored and not included :___()
If i leave it as GRRLIB.c EVERY function give me a "undefined reference to GRRLIB_nameOfTheFuncion"

When i rename it to GRRLIB.cpp then
I have to update the last line of GRRLIB_LoadTexture with

Code:

    return (u8 *)my_texture;

(just notice the casting)

But then only "some functions" are giving me problems

Code:

GameView.o: In function `GameView::clearScreen()':
/home/conejo/devkitpro/MKAE/source/GameView.cpp:412: undefined reference to `GRRLIB_FillScreen(unsigned int)'
GameView.o: In function `GameView::drawCrosshair()':
/home/conejo/devkitpro/MKAE/source/GameView.cpp:406: undefined reference to `GRRLIB_DrawImg(float, float, unsigned short, unsigned short, unsigned char*, float, float, float, unsigned char)'
GameView.o: In function `GameView::drawBackground(MKAE_IMG)':
/home/conejo/devkitpro/MKAE/source/GameView.cpp:375: undefined reference to `GRRLIB_DrawImg(float, float, unsigned short, unsigned short, unsigned char*, float, float, float, unsigned char)'
/home/conejo/devkitpro/MKAE/source/GameView.cpp:376: undefined reference to `GRRLIB_DrawImg(float, float, unsigned short, unsigned short, unsigned char*, float, float, float, unsigned char)'
GameView.o: In function `GameView::drawSprites()':
/home/conejo/devkitpro/MKAE/source/GameView.cpp:87: undefined reference to `GRRLIB_DrawImg(float, float, unsigned short, unsigned short, unsigned char*, float, float, float, unsigned char)'
/home/conejo/devkitpro/MKAE/source/GameView.cpp:105: undefined reference to `GRRLIB_DrawImg(float, float, unsigned short, unsigned short, unsigned char*, float, float, float, unsigned char)'
GameView.o: In function `GameView::waitForFrame()':
/home/conejo/devkitpro/MKAE/source/GameView.cpp:58: undefined reference to `GRRLIB_FillScreen(unsigned int)'
collect2: ld returned 1 exit status
make[1]: *** [/home/conejo/devkitpro/MKAE/boot.elf] Error 1
make[1]: Debido a los errores, el objetivo `/home/conejo/devkitpro/MKAE/boot.dol' no se reconstruyó.
make: *** [build] Error 2

Of course i use GRRLIB_Start, _Render, _InitVideo & _LoadTexture... but only FillScreen & DrawImg are giving me problems.

In fact if i go to GRRLIB.h is giving me this warning

Code:

/home/conejo/devkitpro/MKAE/source/GRRLIB/GRRLIB.h: At global scope:
/home/conejo/devkitpro/MKAE/source/GRRLIB/GRRLIB.h:21: warning: inline function 'void GRRLIB_FillScreen(u32)' used but never defined
/home/conejo/devkitpro/MKAE/source/GRRLIB/GRRLIB.h:34: warning: inline function 'void GRRLIB_DrawImg(f32, f32, u16, u16, u8*, float, float, f32, u8)' used but never defined

(and with GRRLIB_Line but i don't use it)

If i delete the "inline" from the functions it compiles, but then a black screen appear when i run it (and the wiimote disconnect)
So, i don't know what could be...

Crayon · 2008-06-23 21:28:36

To make it work in a CPP project, instead of renaming the file to .cpp put:

Code:

extern "C"
{
    #include "GRRLIB/GRRLIB.h"
}

I deleted all the inline too to make it work.

So it can work with C++ project.

I'm having a problem similar to yours, I think it's because the function GRRLIB_LoadTexture is in a loop, try not call it several times for the same memory allocation. Don't forget if you do a malloc you need free or if you use new you need a delete.

Crayon · 2008-06-24 03:51:03

Download the latest version (3.0.1a) it fixed my problem.

Look carefully at the examples now, they don't use any malloc anymore because GRRLIB_LoadTexture is using memalign. But don't forget to free the pointer when the texture is not needed anymore.

_CONEJO · 2008-06-24 10:16:33

thanks, i'll take a look

_CONEJO · 2008-06-24 16:36:39

ummm same problem...

i'm doing something like

Code:

    u8 *beer_img = GRRLIB_LoadTexture(beer);

    u8 *sito_img = GRRLIB_LoadTexture(sito);

    u8 *crosshair_img = GRRLIB_LoadTexture(crosshair);

    u8 *fondo_img = GRRLIB_LoadTexture(fondo);

    Object ob;

    ob.id = 1;

    ob.img.image = beer_img;

    ob.img.width = 64;

    ob.img.height = 64;

And similar to the rest of the images...

Crayon · 2008-06-24 17:46:32

Object it's a structure or a class?

What is: ob.img.image is it a u8 *?

If yes why don't you load load the texture directly to it:

Code:

ob.img.image = GRRLIB_LoadTexture(beer);

_CONEJO · 2008-06-25 14:57:37

Object is a class
img is a struct to hold image data, width & heigth (some other stuff as center, and in a future a bitmap for pifxel-perfect collisions)

i declare and object (ob) declare its properties, and then add it to a list (vector type) to managed all objects on screen.
In fact, i don't know why i'm doing it in that way (lol) It's just like :

Code:

Object ob;
ob.var1 = value1a;
ob.var2 = value2a;
ob.var3 = value3a;
objectsList.addObjectToList(ob);
//reutilice the same object
ob.var1 = value1b;
ob.var2 = value2b;
ob.var3 = value3b;
objectsList.addObjectToList(ob)

I'm NOT copying the pointers, with previous GGRLIB (1.6) it works fine... so it should work now
At the weekend (sorry, i have to come back to my country T___T) i will try to start from "scratch" (no images >> one image hardcoded >> two images hardcoded >> the rest of the system) because with no compilation errors & no "code dump" its hard to find why it's crashing.

Thanks for the advice ^___^

#1 2008-06-23 21:12:35

GRRLIB in C++ project

Code:

Code:

Code:

#2 2008-06-23 21:28:36

Re: GRRLIB in C++ project

Code:

#3 2008-06-24 03:51:03

Re: GRRLIB in C++ project

#4 2008-06-24 10:16:33

Re: GRRLIB in C++ project

#5 2008-06-24 16:36:39

Re: GRRLIB in C++ project

Code:

#6 2008-06-24 17:46:32

Re: GRRLIB in C++ project

Code:

#7 2008-06-25 14:57:37

Re: GRRLIB in C++ project

Code:

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