Spatial heading

Troubleshooting General Help
1

I know this is basic 3d math, but I'm a bit confused.

These are my questions:


  1. Is there a way to retreive the heading vector of a spatial or I do I have to use my own variable for each entity?



      Is it:

     

     

      Vector3f heading = spatial.getLocalRotation().getRotationColumn(2, new Vector3f());

     




  2. How can I apply a new heading to a spatial?
2
  1. this obviously depends on where your spatial actually 'heads' while it's not rotated. Generally you get it's heading by

spatial.getWorldRotation().mult( unrotatedHeadingVector )



2) you can simply use Spatial.lookAt - but be aware that it again depends on that unrotatedHeadingVector what you have to specify as parameter values
3

What do you mean by an unrotatedHeadingVector? Is unrotatedHeadingVecto the desired heading and

spatial.getWorldRotation().mult( unrotatedHeadingVector )

is the actual heading?
4

unrotatedHeadingVector is the direction that the object would move if it would not rotate. It normally is the direction to the front of the object. 

5

So where do I derive an unrotatedHeadingVector from, or is it something that I set manually

as an entity's parameter?

6

Yes, it's on you to decide that - e.g. could be new Vector( 0, 0, 1 ) if the face of your model points into z-axis direction.

7

Okay, thanks for the help!

I think I got it now… :expressionless: