Flocking Simulation / Boids

This is a simple Android app, completely written in Kotlin to simulate flocking behavior based on Craig Reynolds's Boids algorithm.

[Wikipedia] Boids (which refers to a bird-like object) is an example of emergent behavior; that is, the complexity of Boids arises from the interaction of individual agents (the boids, in this case) adhering to a set of simple rules. The rules applied in the simplest Boids world are as follows:

• Separation: steer to avoid crowding local flockmates
• Alignment: steer towards the average heading of local flockmates
• Cohesion: steer to move towards the average position (center of mass) of local flockmates

Demo

<img src="https://github.com/JayaSuryaT/FlockingSimulation/blob/dev/demo/demo.gif" alt="Demo gif" data-canonical-src="https://github.com/JayaSuryaT/FlockingSimulation/blob/dev/demo/demo.gif" width="270" height="585" />

Adjust the coefficients for the three rules for different behaviors.

<img src="https://github.com/JayaSuryaT/FlockingSimulation/blob/dev/demo/all.gif" alt="All controlls gif" data-canonical-src="https://github.com/JayaSuryaT/FlockingSimulation/blob/dev/demo/all.gif" width="270" height="585" />

| Only separation | Only alignment | Only cohesion | | -- | -- |--| | <img src="https://github.com/JayaSuryaT/FlockingSimulation/blob/dev/demo/seperation.gif" alt="All controlls gif" data-canonical-src="https://github.com/JayaSuryaT/FlockingSimulation/blob/dev/demo/seperation.gif" width="270" height="585" />| <img src="https://github.com/JayaSuryaT/FlockingSimulation/blob/dev/demo/alignment.gif" alt="All controlls gif" data-canonical-src="https://github.com/JayaSuryaT/FlockingSimulation/blob/dev/demo/alignment.gif" width="270" height="585" />| <img src="https://github.com/JayaSuryaT/FlockingSimulation/blob/dev/demo/cohesion.gif" alt="All controlls gif" data-canonical-src="https://github.com/JayaSuryaT/FlockingSimulation/blob/dev/demo/cohesion.gif" width="270" height="585" /> |

Logic

• All the behaviors are abstracted behind FlockBehavior interface.
• All the applied behaviors are determined from FlockBehaviorProcessor class, you may add / modify / remove any behavior easily from here as desired.

Thanks

Thanks to Daniel Shiffman for his awesome video about boids / flocking simulation.