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Aug 17, 2001, 12:50am

Hello,

I was if someone can help me by telling my the C++ code for the AW
SDK to find the distance between two avatars. I know it has to to with
algebra and I think I get the math on how to do it, but I need an
example.

Thanks,

Programmer

Aug 17, 2001, 1:41am

Its really fairly straightforward. You need to set up a handler for the
AW_EVENT_AVATAR_ADD:

aw_event_set(AW_EVENT_AVATAR_ADD, avatar_add);

Every time someone appears, this method gets called. It will also be
called if you call aw_state_change (I think) for every avatar that
happens to be in the general viscinity of your bot. Inside of
avatar_add(), you can have it add each avatar to some kind of list
(perhaps a ListView in the GUI):

void avatar_add()
{
// get AW_AVATAR_X and AW_AVATAR_Y and AW_AVATAR_Z and add it to a list
}

From some kind of list you can select two avatars and compare them with
something like this:

// xa and za are the X and Z positions of one avatar
// ya and yb are the X and Z positions of another avatar
int avatarDistance(int xa, int xb, int za, int zb)
{
int distance;
int xdist;
int zdist;

xdist = xa - xb;
zdist = za - zb;
if(xdist < 0) xdist -= (xdist * 2); //We cant sqrt negatives
if(zdist < 0) zdist -= (zdist * 2); //"" "" "" ""

distance = sqrt(xdist^2 + zdist^2); //Good 'ol Pythagoras :-)

return distance;
}

Of course, this code only supports avatars on the ground. We haven't
gotten to the part in Geometry where we can find 3-dimentional stuff,
but I am sure someone around here can help you with that :-)

Hope this helps.

-JV

[View Quote] > Hello,
>
> I was if someone can help me by telling my the C++ code for the AW
> SDK to find the distance between two avatars. I know it has to to with
> algebra and I think I get the math on how to do it, but I need an
> example.
>
> Thanks,
>
> Programmer
>
>


--
John Viper (#296714)
jviper at jtsoft.net
http://www.jtsoft.net

"Life on Earth may be expensive, but it does include a free trip around
the sun..." -anonymous

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