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Setting polar velocity--need speed component

by Jason McIntosh · in Torque Game Builder · 03/01/2005 (4:27 pm) · 4 replies

I'm setting an object's polar velocity to bounce it at a controlled range of angles. Once I have the angle, I want to call setLinearVelocityPolar( angle, speed ) but I also need the speed part.

How can I get the current speed? Do I need to calculate the vector magnitude (speed) "by hand"?

My math is very rusty. :)
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Torque Owner Pete111
#1
03/01/2005 (5:03 pm)
Wouldnt you know it's current speed when you first set it?

Associate Melv May
#2
03/02/2005 (3:08 am)
@Jason: If you wanted to adjust the angle the object was moving but maintain its current speed, use the vector utility helper functions (see ref-doc) like so:-

%obj.setLinearVelocityPolar( myAngle, vectorLength2D( %obj.getLinearVelocity() ) );

Hope this helps.

- Melv.

Torque Owner Jason McIntosh
#3
03/02/2005 (5:07 am)
Melv, that's exactly what I needed! Thanks!!

Associate Melv May
#4
03/02/2005 (5:21 am)
No problem. Vector utility functions are your friends. More of those to come.

- Melv.