How to control rotation speed?

Troubleshooting General Help
1

Hello everyone, this question may sound stupid for you but i cant figure out how to change the speed at which an enemy ship rotates towards the player. Plz dont post anyhateful comments its only a month i got into jme . Here is my code:

protected void controlUpdate(float tpf) {
        Vector3f playerDirection = player.getLocalTranslation().subtract(spatial.getLocalTranslation());
        playerDirection.normalizeLocal();
        playerDirection = playerDirection.add(velocity);
        velocity= playerDirection.normalizeLocal().mult(speed);
        if (spatial.getLocalTranslation().distanceSquared(player.getLocalTranslation()) >        2000){
            float actualRotation = Main.getAngleFromVector(playerDirection);
            if (actualRotation != rotation) {
                spatial.rotate(0, 0, actualRotation-rotation);
                rotation= actualRotation;

          }
    spatial.move(velocity);
    }

Note:its a 2D game, the spatial seeks the player and rotate in its direction fine, i only want to control the speed at which it rotates.Thanks for your help.

2

To post code please precede it by a line of 3 back ticks: ` And also follow it by a line of three back ticks.

Note: not a single quote ’ but a back tick `… three times.

3

The hello tutorials explain this, you basically change it using tpf and a multiplicator.

4

you mean something like that ?

spatial.rotate(0, 0, (actualRotation-rotation)*0.8f);

actual ive tried and it makes the spatial rotation in a wrong direction i.e not exactly towards the player. Maybe its my logic which sucks anyway thanks any suggestions are most welcome.

5

I’ll try to make my response look as nice as your original post (still unfixed with respect to code blocks)… :wink:

Where
does
rotation come
from?

Generally, it is
unnecessary

to deal with angles
in
such cases.

as
quaternions can
be
interpolated

directly.

6

Dude, do you even tpf?
http://wiki.jmonkeyengine.org/doku.php/jme3:beginner:hello_main_event_loop