BOIDS

Reynolds flocking — separation · alignment · cohesion. Complex murmurations emerge from three simple local rules.

Population 2500

Separation1.55

Alignment1.0

Cohesion0.85

Vision radius 44

Separation radius 22

Max speed 3.4

Mouse force 120

Repel

Speed hue

Trails

Grid

Under the hood: a uniform spatial-hash grid (cell = vision radius) means each boid only scans its 3×3 neighbouring cells — turning the naïve O(n²) all-pairs test into ~O(n), so thousands run smoothly on Canvas 2D.