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Emitter rotation

by Derek Kittrell · in Torque Game Builder · 03/01/2005 (9:39 pm) · 3 replies

Hmm.. Is there an emitter flag to keep the rotation of the emitter in sync with the rotation of the object it is mounted to? I was doing this manually using setAngularVelocity to rotate both, but they get out of sync. It seems to work okay using setAutoRotation on each object, but not for angularvelocity. Also, doing it manually seems kind of brute force. Any help would be greatly appreciated.
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Torque Owner Jason McIntosh
#1
03/01/2005 (10:24 pm)
I think you may need to create a link point. I haven't done any object mounting yet, so that's just a guess based on what the reference docs say about tracking rotation.

Also, did you set the "trackRotation" parameter to "true" in the mount() call? (Eh, the docs are a little fuzzy, but maybe this isn't the problem.)

Torque Owner Derek Kittrell
#2
03/01/2005 (10:42 pm)
Yes, trackrotation does the trick.. Heh.. I read about that and figured that couldn't be my problem because it defaults to true, but I snagged the code for attaching thrusters from the demo, which sets it to false.. Hah! my "duh" moment of the evening.. Thanks for your help!

Associate Melv May
#3
03/02/2005 (1:27 am)
@Derek: Yes, that's it. There are a number of options (that'll get more loving doco attention soon) in the emitters themselves. You can tell the emitter to track the parents rotation (effect) and emit appropriately as well as having the parents position and rotation move all the particles after they've been emitted.

Thanks for helping each other out. I'm just trying to keep up!

- Melv.