Hello!

I am new to programming, and to Objective-C. I currently take a free online course on CS, which includes C programming, and has also introduced Objective-C.

Please, take a look at the program below, which uses Stanford Portable Library.

I work on Mac OS 10.7.5, Xcode 4.6.3, Terminal 2.2.3, and would like to make and compile such programs within these programs. What shall I do, which headers shall I use? Shall I download them?

**
* bounce.c
* Bounces a circle back and forth in a window.
*/

// standard libraries
#include <stdio.h>

// Stanford Portable Library
#include <spl/gevents.h>
#include <spl/gobjects.h>
#include <spl/gwindow.h>

int main(void)
{
// instantiate window
GWindow window = newGWindow(320, 240);

// instantiate circle
GOval circle = newGOval(0, 110, 20, 20);
setColor(circle, "BLACK");
setFilled(circle, true);
add(window, circle);

// initial velocity
double velocity = 2.0;

// bounce forever
while (true)
{
// move circle along x-axis
move(circle, velocity, 0);

// bounce off right edge of window
if (getX(circle) + getWidth(circle) >= getWidth(window))
{
velocity = -velocity;
}

// bounce off left edge of window
else if (getX(circle) <= 0)
{
velocity = -velocity;
}

// linger before moving again
pause(10);
}
}

Thank you!

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

modelling.data@gmail.com writes:

Hello!

I am new to programming, and to Objective-C. I currently take a free online course on CS, which includes C programming, and has also introduced Objective-C.

Please, take a look at the program below, which uses Stanford Portable Library.

I work on Mac OS 10.7.5, Xcode 4.6.3, Terminal 2.2.3, and would like to make and compile such programs within these programs. What shall I do, which headers
shall I use? Shall I download them?

Yes.

You could write a makefile to compile your spl-example.m file:

-----(Makefile)-----------------------------------------------------------------

all:spl-example

.PHONY::run get-dependencies
get-dependencies:
cd /usr/local/src/ ; git clone git@github.com:cs50/spl.git
cd /usr/local/src/spl ; make && make install

run:spl-example
CLASSPATH=/usr/local/lib/spl.jar ./spl-example

spl-example:spl-example.m
gcc -o spl-example spl-example.m -lcs -lm

clean:
rm spl-example

----------------------------------------------------------------------------------

To install spl:

make get-dependencies

and then to run your program:

make run


WFM on MacOSX and on Linux.

--
__Pascal Bourguignon__ http://www.informatimago.com/
“The factory of the future will have only two employees, a man and a
dog. The man will be there to feed the dog. The dog will be there to
keep the man from touching the equipment.” -- Carl Bass CEO Autodesk

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)