3D Boids simulation

demo

Sources

Some sources I used for inspiration and help building this.

Boids

• http://www.red3d.com/cwr/boids/
• https://natureofcode.com/book/chapter-6-autonomous-agents/
• https://dl.acm.org/doi/10.1145/37401.37406

Octree

• https://en.wikipedia.org/wiki/Octree
• https://magnum.graphics/showcase/octree/?spheres=20&sphere-radius=0.1&sphere-velocity=1.0
• https://castle-engine.io/vrml_engine_doc/output/xsl/html/section.how_octree_works.html

Language and libraries used

• Rust 1.66 (programming language)
• Bevy 0.9.1 (game engine)
• Rayon 1.6.1 (multithreading)
• Nalgebra 0.31.4 (linear algebra library)

Implementation

• The Naive and the Octree implementation include multithreading
• Menu for changing the parameters of the simulation
• Octree is implemented as an "arena allocated tree"
  • Example 1
  • Example 2 - library
• The Octree is built in every call of the function "flock" - every time we update the speed of the boids

Analysis

• Results of benchmarks

Possible improvements

• Updating of Octree (instead of rebuilding)
• Faster rendering speed (rendering has issues at higher number of boids)