Fireflies — fireflies simulation

Fireflies wander a dark grass field; cursor is a lantern that pulls them in. Click flares the lantern and scatters the swarm.

How it works

Fireflies wander a dark grass field. Bodies, wings, pulsing abdomen glow. Cursor is a lantern — pulls them in, makes them blink faster. Click flares the lantern and scatters the swarm.

Related simulations

• GrassA meadow of tall grass blades sways in wind, butterflies flutter low above the tips. Cursor pushes blades and butterflies.
• BoidsReynolds 1987 boids — separation, alignment, cohesion — running on a spatial hash grid. Cursor attracts the flock; click repels. Torus wraparound.
• NeuronsTwo nearby neuron fields linked by only a handful of short bridge connections. Click starts a session — nearest neuron fires, then pulses spill unpredictably between the two clusters.
• SnakeA segmented snake follows the cursor, wanders if idle. Click for a brief speed boost; mouth opens and tongue flicks near the cursor.

Categories: Life & nature.