Reynolds-Style Boids and Swarm Simulation // Provides deterministic two- and three-dimensional boids and swarm simulations for R. The package implements Reynolds-style separation, alignment, and cohesion rules with optional obstacles, attractors, predators, species parameters, and reproducible frame export. Simulation state is renderer- neutral; optional adapters can hand frame data to visualization packages such as 'ggWebGL'. The model follows Reynolds (1987) doi:10.1145/37402.37406.