Help @ C++

[TuPLaD]

Hi, i just started learning how to code OpenGL with the syntax of C++.
But i got the following problem(YES IT IS C++ BUT ITS A OPENGL
PROGRAM):

------------------ Quote From A Site ------------------
First of all you need a bool, let's call it bBallDrawn. In
glPushMatrix set it to true and if it is true in glPopMatrix, we'll
draw the Ball and set it back to false.
Here's the code:

glPushMatrix();
glDisable(GL_TEXTURE_2D); // Ballhack has no textures
glDisable(GL_DEPTH_TEST); // Makes the Balls visible through walls
GLUquadricObj *ball;
if(bT)
glColor3f(1.0f,0.0f,0.0f); // Set Ballhack Color
else if(bCt)
glColor3f(0.0f,0.0f,1.0f); // Set Ballhack Color
glTranslatef(x,y,z); // insert coordinates here
ball=gluNewQuadric();
gluQuadricNormals(ball, GLU_SMOOTH);
gluSphere(ball,5.0f,32,32);
gluDeleteQuadric(ball);
glEnable(GL_DEPTH_TEST);
glEnable(GL_TEXTURE_2D);
glPopMatrix();
------------------ End Of Quote From A Site ------------------

Ok, i make a bool

bool <bBallDrawn>

But now, how do i set it to true & false ???

[Alf P. Steinbach]

* TuPLaD:

Ok, i make a bool

bool <bBallDrawn>
Makte that

bool ballIsDrawn;

But now, how do i set it to true & false ???

ballIsDrawn = true;
ballIsDrawn = false;

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[John Harrison]

"TuPLaD" <sp*****@pandora.be> wrote in message
news:a2**************************@posting.google.c om...

Hi, i just started learning how to code OpenGL with the syntax of C++.
But i got the following problem(YES IT IS C++ BUT ITS A OPENGL
PROGRAM):

------------------ Quote From A Site ------------------
First of all you need a bool, let's call it bBallDrawn. In
glPushMatrix set it to true and if it is true in glPopMatrix, we'll
draw the Ball and set it back to false.
Here's the code:

glPushMatrix();
glDisable(GL_TEXTURE_2D); // Ballhack has no textures
glDisable(GL_DEPTH_TEST); // Makes the Balls visible through walls
GLUquadricObj *ball;
if(bT)
glColor3f(1.0f,0.0f,0.0f); // Set Ballhack Color
else if(bCt)
glColor3f(0.0f,0.0f,1.0f); // Set Ballhack Color
glTranslatef(x,y,z); // insert coordinates here
ball=gluNewQuadric();
gluQuadricNormals(ball, GLU_SMOOTH);
gluSphere(ball,5.0f,32,32);
gluDeleteQuadric(ball);
glEnable(GL_DEPTH_TEST);
glEnable(GL_TEXTURE_2D);
glPopMatrix();
------------------ End Of Quote From A Site ------------------

Ok, i make a bool

bool <bBallDrawn>

That's not legal C++. Perhaps you meant this

bool bBallDrawn;
But now, how do i set it to true & false ???

bBallDrawn = true;
bBallDrawn = false;

john

[Rolf Magnus]

TuPLaD wrote:

Hi, i just started learning how to code OpenGL with the syntax of C++.
But i got the following problem(YES IT IS C++ BUT ITS A OPENGL
PROGRAM):

------------------ Quote From A Site ------------------
First of all you need a bool, let's call it bBallDrawn. In
glPushMatrix set it to true and if it is true in glPopMatrix, we'll
draw the Ball and set it back to false.
Here's the code:

glPushMatrix();
glDisable(GL_TEXTURE_2D); // Ballhack has no textures
glDisable(GL_DEPTH_TEST); // Makes the Balls visible through walls
GLUquadricObj *ball;
if(bT)
glColor3f(1.0f,0.0f,0.0f); // Set Ballhack Color
else if(bCt)
glColor3f(0.0f,0.0f,1.0f); // Set Ballhack Color
glTranslatef(x,y,z); // insert coordinates here
ball=gluNewQuadric();
gluQuadricNormals(ball, GLU_SMOOTH);
gluSphere(ball,5.0f,32,32);
gluDeleteQuadric(ball);
glEnable(GL_DEPTH_TEST);
glEnable(GL_TEXTURE_2D);
glPopMatrix();
------------------ End Of Quote From A Site ------------------

Ok, i make a bool

bool <bBallDrawn>
No, that syntax is nonsense. It should be:

bool bBallDrawn;
But now, how do i set it to true & false ???

Uhm...

bBallDrawn = true;

and

bBallDrawn = false;
Which C++ book are you using?

[Stephen Tyndall]

"TuPLaD" <sp*****@pandora.be> wrote in message
news:a2**************************@posting.google.c om...

Hi, i just started learning how to code OpenGL with the syntax of C++.
But i got the following problem(YES IT IS C++ BUT ITS A OPENGL
PROGRAM):

------------------ Quote From A Site ------------------
First of all you need a bool, let's call it bBallDrawn. In
glPushMatrix set it to true and if it is true in glPopMatrix, we'll
draw the Ball and set it back to false.
Here's the code:

glPushMatrix();
glDisable(GL_TEXTURE_2D); // Ballhack has no textures
glDisable(GL_DEPTH_TEST); // Makes the Balls visible through walls
GLUquadricObj *ball;
if(bT)
glColor3f(1.0f,0.0f,0.0f); // Set Ballhack Color
else if(bCt)
glColor3f(0.0f,0.0f,1.0f); // Set Ballhack Color
glTranslatef(x,y,z); // insert coordinates here
ball=gluNewQuadric();
gluQuadricNormals(ball, GLU_SMOOTH);
gluSphere(ball,5.0f,32,32);
gluDeleteQuadric(ball);
glEnable(GL_DEPTH_TEST);
glEnable(GL_TEXTURE_2D);
glPopMatrix();
------------------ End Of Quote From A Site ------------------

Ok, i make a bool

bool <bBallDrawn>
This should be

bool bBallDrawn;
But now, how do i set it to true & false ???

In declaration:
bool bBallDrawn = true;
bool bBallDrawn = false;

After declaration:
bBallDrawn = true;
bBallDrawn = false;

You can also use 0 for false and 1 for true, but the above is more clear.

Please don't take this the wrong way, but are you sure you want to work with
OpenGL when you don't know how to declare and initialize variables? If
you're trying to learn from a website, I'd suggest going out and getting one
of the following books instead:

At Amazon.com -
Accelerated C++ (if you already know a language)
C++ Primer Plus: Fourth Edition (supposed to be very good)
You Can Do It! (recommended by some others here)

At Barnes & Noble -
C++ Programming in Easy Steps (I used this one)

Hope you find this useful. Good luck with your programming!

[TuPLaD]

Im not using any C++ book, im just trying to make a OpenGL32.DLL :-)
But a bit edited & stuff.

Well now a few other questions :D
---------------------------------------

I got the following in my OpenGL32 -->
================================================== ===============
// The Begin:
bool bSky;
< after that alot of code >
void sys_glBegin (GLenum mode)
{
//START OF BLACKSKY
if(mode == GL_QUADS)
{
bool bSky = true;
}
else
{
bool bSky = false;
}
//END OF BLACKSKY
(*orig_glBegin) (mode);
}
================================================== ===============

Well, the problem is, it wont turn on the Black Sky in game :\
This is where i got that from:

---------- Quote From A Site ----------
This feature removes the sky, and makes the entire sky black. This
feature requires glBegin, and glVertex3fv.
First, you must make a boolean, let's call it 'bSky'. Now, in glBegin,
you must check for GL_QUADS as the mode. Then you set bSky to be TRUE.
Else, set bSky to be FALSE.

Now, in glVertex3fv, check if bSky is TRUE, then return the caller
without calling the origonal function.
---------- End Of Quote From A Site ----------

What did i do wrong (look @ begin of blacksky) ?
I think everything is right isnt it ?
Should i make bool bSky = true; at the start of the code ??

---------- Next Question ----------
How do i print something on the screen ? If anybody knows ? Becourse
the tutorial of printing of text is too complicated :(
---------- End Of Next Question ----------

[Alf P. Steinbach]

* TuPLaD:

Im not using any C++ book, im just trying to make a OpenGL32.DLL :-)
You need a C++ book.

Try "You can do it" and after that "Accelerated C++".

// The Begin:
bool bSky;
< after that alot of code >
void sys_glBegin (GLenum mode)
{
//START OF BLACKSKY
if(mode == GL_QUADS)
{
bool bSky = true;
}
else
{
bool bSky = false;
}
//END OF BLACKSKY
(*orig_glBegin) (mode);
}
================================================== ===============

Well, the problem is, it wont turn on the Black Sky in game :\

No wonder to anyonw who knows just the barest beginnings of C++... You
need a book. Try "You can do it" and after that "Accelerated C++".

Technically, if you just remove the last two 'bool' words it should work.

But to understand that you need a book. Try "You can do it" and after
that "Accelerated C++". And perhaps after that, "The C++ Programming
Language".

--
A: Because it messes up the order in which people normally read text.
Q: Why is it such a bad thing?
A: Top-posting.
Q: What is the most annoying thing on usenet and in e-mail?