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Oct 24, 1998, 7:08pm

Ok I was wondering if
AW_MY_X, AW_MY_Y, AW_MY_Z, AW_MY_YAW and use the AW_AVATAR_X,Y,Z,YAW if
it is inside avatar change :)

Oct 25, 1998, 2:05pm

Yes but is there a way to make my bot mvoe to the coords of the avatar
it noticed?

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Oct 25, 1998, 2:06pm

The MY are your robots position and the AVATAR is the position of the avatar
that your bot noticed.

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Oct 25, 1998, 4:37pm

Certainly,

handler_avatar_add {

get AVATAR_X
get AVATAR_Y
get AVATAR_Z
get AVATAR_YAW

set MY_Z to AVATAR_X
set MY_Y to AVATAR_Y
set MY_Z to AVATAR_Z
set MY_YAW to AVATAR_YAW
aw_state_change
}

This will move you to exactly the same place as the avatar you have noticed.

Now the mathematical problem you have is working out how to put yourself
infront of and facing the avatar. Here is the algorithm:

distance from avatar required = 1000; /* 1 meter */

avatar direction in radians = (avatar yaw / 10) * (2PI/360);

Infront X = Avatar X + (distance * sin(avatar direction));
Infront Y = Avatar Y + (distance * sin(avatar direction));
Infront Z = Avatar Z + (distance * cos(avatar direction));
Infront YAW = (Avatar yaw + 1800) moduls 3600;

Some details to note:

1. The Ansi sin and cos functions take radians instead of degrees.
2. 360 degrees = 2*PI radians
3. Active world angle = 1/0 degree.

If you look at the Movement::modifyPosition method in the C++ AWCPP source
file Movement.C it shows you this logic for moving an avatar forward a
specific distance.

Hope this helps.

Edward Sumerfield.

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Oct 25, 1998, 8:26pm

Is that C or C++? :)

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Oct 25, 1998, 8:49pm

Its E++ :)

[View Quote] > Is that C or C++? :)
>
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Oct 25, 1998, 10:40pm

Jw schrieb in Nachricht <3633AAFA.4005158D at mediaone.net>...
>Its E++ :)
>
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yep, E++ ... right LOL

anyway..

yourself


i don't know if it makes much sense to calculate an altitude angle... in
order to face somebody, just use the same altitude... (which is the Y
factor)

Walter

Oct 26, 1998, 1:55am

Exactly Walter. My appologies that is a typo. In reality it should read
"avatar vertical direction" which in your case will always be zero.

Edward Sumerfield.

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Oct 26, 1998, 11:06am

You know, that wasn't accurate either. The Y coordinate should remain
exactly the same as the avatars Y coordinate. After all, if an avatar is
flying over head you would want to run up to meet them wouldn't you.

So that same line should read.

Infront Y = Avatar Y;

Edward Sumerfield.

[View Quote]

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