diff options
Diffstat (limited to 'app/systems/rules/alignment.rb')
| -rw-r--r-- | app/systems/rules/alignment.rb | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/app/systems/rules/alignment.rb b/app/systems/rules/alignment.rb new file mode 100644 index 0000000..2c2af11 --- /dev/null +++ b/app/systems/rules/alignment.rb @@ -0,0 +1,24 @@ +FF::Scn::BoidRules.add( + FF::Sys.new('BoidsAlignment', priority: 50) do + group_velocity = [0.0, 0.0] + boids_count = FF::Cmp::BoidsCohesion.data.count + + FF::Cmp::BoidsAlignment.each do |alignment| + boid = alignment.entities[0].components[FF::Cmp::Boid][0] + group_velocity[0] += boid.vx + group_velocity[1] += boid.vy + end + + FF::Cmp::BoidsAlignment.each do |alignment| + boid_update = alignment.entities[0].components[FF::Cmp::Boid][0] + move_boid = group_velocity.dup + move_boid[0] -= boid_update.vx + move_boid[1] -= boid_update.vy + move_boid[0] /= boids_count - 1.0 + move_boid[1] /= boids_count - 1.0 + + boid_update.cx += (move_boid[0] - boid_update.vx) / alignment.strength + boid_update.cy += (move_boid[1] - boid_update.vy) / alignment.strength + end + end +) |