B-TIER demo
Shepherd dog flock simulation — pressure-field + boids rules
100k ft — What is this?
Shepherd dog flock simulation — pressure-field + boids rules
50k ft — Why care?
@simulateitnow explains a flock-herding simulation combining a pressure-field force F=(1-d/R)^1.2 with classic boids (cohesion/alignment/separation). Great reference for swarm/multi-agent simulation math.
10k ft — Key takeaways
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5k ft — Tools & techniques
Arc, React
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1k ft — Deep-dive / try it
A single shepherd dog can control an entire flock of sheep without ever touching them. The secret is spatial pressure — the exploitation of every prey animal's flight zone.
When a predator (or herding dog) enters the flight zone — the minimum distance at which an animal perceives a threat — the animal moves away. The dog does not chase individual sheep. Instead, it positions itself behind the flock relative to the target destination. This creates a directional pressure wave that pushes the entire group forward.
The pressure force follows an inverse-distance relationship: F = (1 − d/R)^1.2, where R is the pressure radius. Sheep closer to the dog flee harder. Sheep at the edge barely react. This gradient is what gives the dog fine control over the flock's direction.
The sheep themselves foll…
Transcript excerpt
A single dog controls 60 sheep without any commands. It uses nothing but spatial pressure. The pressure radius defines the zone. Everything inside that circle moves away from the dog. A wider radius means the dog controls more sheep at once. Total flock control. Shrink the radius and the dog must chase harder. The sheep scatter in every direction. Cohesion is the glue holding the flock together. It determines how tightly they pack. High cohesion and the flock moves as a single dense ball. One unit easy to herd. Low cohesion and individuals break away. Total chaos for the dog. Stubborn sheep resist the dog's pressure. They refuse to flee as easily. Maximum stubbornness and sheep plant their feet. They barely move even when pressured. Zero stubbornness and they are completely docile. The dog herds them effortlessly. Now a faster dog. Watch what happens when we increase the speed. The dog covers the entire field. No sheep escapes its reach. Real shepherd dogs use these exact pressure mechanics every day. This is how it works. Explore at simulatednow.com