13-08-2025, 11:48 PM
(This post was last modified: Yesterday, 12:04 AM by slimedev.
Edit Reason: images pasted from Snipping Tool copy/paste are 1000s of characters of gibberish text
)
Hello. I have an Obi Fluid Emitter of 12 Particles, which generally just sits there (purple) without any input. But I noticed that at low particle numbers, the individual particles seem to narrowly clump together, and become somewhat jittery, like boiling water droplets. They also seem to gain a lot of friction to the WASD controls, making it generally annoying/ impossible to control.
I had no intuition that it was Particle Velocities, but on trying to refine the WASD controls I discovered that bodies of 4 or less particles have these interesting symmetrical velocities. I don't know if they are pointing in or out vs the position of the centermass of the droplet.
Obi seems to modify velocities in a lot of places, and I was wondering if you could point me in the right direction. Where might there be relevant forces applied, that I can try to hook into?
I had previously attempted passing around a duplicated velocities array, and copying/zeroing it out, but it didn't work at all in the few locations I tried.
Images of Debug Velocities: various numbers of particles. At just 1 particle remaining, the particle is a bit jumpy and sometimes meanders around a little even without any input
12 moving.png (Size: 6.58 KB / Downloads: 7)
4 still.png (Size: 6.84 KB / Downloads: 7)
3 still.png (Size: 10.77 KB / Downloads: 6)
2 still.png (Size: 10.05 KB / Downloads: 7)
1 jitter.png (Size: 6.75 KB / Downloads: 7)
I had no intuition that it was Particle Velocities, but on trying to refine the WASD controls I discovered that bodies of 4 or less particles have these interesting symmetrical velocities. I don't know if they are pointing in or out vs the position of the centermass of the droplet.
Obi seems to modify velocities in a lot of places, and I was wondering if you could point me in the right direction. Where might there be relevant forces applied, that I can try to hook into?
I had previously attempted passing around a duplicated velocities array, and copying/zeroing it out, but it didn't work at all in the few locations I tried.
Images of Debug Velocities: various numbers of particles. At just 1 particle remaining, the particle is a bit jumpy and sometimes meanders around a little even without any input
12 moving.png (Size: 6.58 KB / Downloads: 7)
4 still.png (Size: 6.84 KB / Downloads: 7)
3 still.png (Size: 10.77 KB / Downloads: 6)
2 still.png (Size: 10.05 KB / Downloads: 7)
1 jitter.png (Size: 6.75 KB / Downloads: 7)