implement separation rule

1 files changed, 26 insertions, 0 deletions

diff --git a/app/systems/rules/separation.rb b/app/systems/rules/separation.rb
new file mode 100644
index 0000000..4a20193
--- /dev/null
+++ b/app/systems/rules/separation.rb
@@ -0,0 +1,26 @@
+FF::Scn::BoidRules.add(
+  FF::Sys.new('BoidsSeparation', priority: 50) do
+    FF::Cmp::BoidsSeparation.each do |separation|
+      newvec = [0.0, 0.0]
+      boid_update = separation.entities[0].components[FF::Cmp::Boid][0]
+
+      FF::Cmp::Boid.each do |boid_check|
+        next if boid_check == boid_update
+        
+        if Math.sqrt(((-boid_check.x + boid_update.x)**2) + ((-boid_check.y + boid_update.y)**2)).abs < separation.distance
+        #if (boid_check.x - boid_update.x).abs < separation.distance and (boid_check.y - boid_update.y).abs < separation.distance
+          newvec[0] -= boid_check.x - boid_update.x
+          newvec[1] -= boid_check.y - boid_update.y
+        end
+      end
+
+      #unless separation.entities[0].components[FF::Cmp::DebugVectorArrow].nil?
+      #  puts "newvec: #{newvec}"
+      #  puts "cx: #{boid_update.cx} cy: #{boid_update.cy}"
+      #  puts "vx: #{boid_update.vx} vy: #{boid_update.vy}"
+      #end
+      boid_update.cx += newvec[0].to_f * separation.strength
+      boid_update.cy += newvec[1].to_f * separation.strength
+    end
+  end
+)