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Particle velocity and lifetime

Emma Soyinka
Got moo? o_o
Join date: 13 Sep 2005
Posts: 218
09-16-2005 15:06
I'm currently messing with the particle system, and what I assumed would work for properly terminating the particles after they've traveled a certain distance doesn't work.

Basically I give them a 0.25 velocity in the Z direction, up. The distance I want them to travel I set to 2 meters. So obviously, if a particle is traveling 0.25 meters per second, it'll take them 2/0.25=8 seconds to get there right?

Well, not right according to the script, and I'm beating my head into the desk trying to figure out why the particles are going faster than they should be going by the velocity. They move as high as 10 times as what they should.

Any advice would be -greatly- appreciated.

EDIT: Even at 0.025 velocity it seems to only take about 1 and a half seconds for the particle to move 2 meters.
Cid Jacobs
Theoretical Meteorologist
Join date: 18 Jul 2004
Posts: 4,304
09-16-2005 15:14
From: Emma Soyinka
I'm currently messing with the particle system, and what I assumed would work for properly terminating the particles after they've traveled a certain distance doesn't work.

Basically I give them a 0.25 velocity in the Z direction, up. The distance I want them to travel I set to 2 meters. So obviously, if a particle is traveling 0.25 meters per second, it'll take them 2/0.25=8 seconds to get there right?

Well, not right according to the script, and I'm beating my head into the desk trying to figure out why the particles are going faster than they should be going by the velocity. They move as high as 10 times as what they should.

Any advice would be -greatly- appreciated.

EDIT: Even at 0.025 velocity it seems to only take about 1 and a half seconds for the particle to move 2 meters.


Have you made sure you edited PSYS_SRC_BURST_SPEED_MIN & PSYS_SRC_BURST_SPEED_MAX both? Also try messing with the particle age. Particles seem to be more of an art than a science :) .
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Emma Soyinka
Got moo? o_o
Join date: 13 Sep 2005
Posts: 218
09-16-2005 15:22
EDIT: With the min and max speed, it now works. I thought it wasn't but there was a problem with the object I was visually measuring the 2 meters by. Hah. Thanks!