Particle Force
Particles pull each other within a reach, or push apart with a negative strength: clumping goo, blobs, swarms that cluster or spread evenly.
Particles pull each other within a reach, or push apart with a negative strength (and those of other events with this operator). Strength is the most any one is pulled, however many are near.
- Add it
- EventAdd OperatorPhysicsParticle Force
- Sends on
- Nothing: it has no wire.
- Influence
- No: a value can’t weigh it.
When to use it
- Clumping: particles drawn together into blobs and strands: goo, slime, magic gathering.
- Spreading out: a negative Strength pushes them apart, so a crowd spaces itself evenly.
It works across events, with the particles of every event with Particle Force.
Settings
As the flow editor’s sidebar shows them. Changing any of them marks the bake old; those marked Keyframable can also change through a bake.
How far each particle feels the others. The force fades out to nothing there.
Each particle pulls the others within Reach, each pull fading to nothing at the reach. However many are near, no particle is pulled harder than Strength, so a dense crowd doesn't crush itself.
Particle Force pulls; it doesn't stop particles passing through each other. Add Particle Physics too for blobs that hold their shape.
Works with
- Drag, so clumps settle instead of jiggling.
- An event takes one Particle Force. A Follow Curve (not steered) or Goal in the same event isn't moved by it.
Problems you may see
event: operator: an event takes only one
Errors stop a bake; warnings don’t. Every message is on the Messages page.
Related
Particle Physics
Make particles solid balls that bump into each other, roll, pile up and come to rest: sand, grains, gravel, beads and ball pits.
Flock
Particles move together as a flock of birds or a school of fish: keeping apart, heading the same way, staying together, and turning aside from what's ahead.