From 561ac9574a5afc88ac762edc8892353e678b1117 Mon Sep 17 00:00:00 2001
From: arngo <27396817+arngo@users.noreply.github.com>
Date: Sun, 19 Dec 2021 22:34:28 -0500
Subject: implemented speed decay

---
 app/components/rules/decay_speed.rb | 2 ++
 app/main.rb                         | 2 ++
 app/systems/rules/decay_speed.rb    | 9 +++++++++
 app/systems/start_game.rb           | 1 +
 4 files changed, 14 insertions(+)
 create mode 100644 app/components/rules/decay_speed.rb
 create mode 100644 app/systems/rules/decay_speed.rb

diff --git a/app/components/rules/decay_speed.rb b/app/components/rules/decay_speed.rb
new file mode 100644
index 0000000..83a3938
--- /dev/null
+++ b/app/components/rules/decay_speed.rb
@@ -0,0 +1,2 @@
+FF::Cmp.new('DecaySpeed',
+            strength: 0.8)
diff --git a/app/main.rb b/app/main.rb
index 3bd54a2..d70958c 100644
--- a/app/main.rb
+++ b/app/main.rb
@@ -11,6 +11,7 @@ require 'app/components/rules/cohesion.rb'
 require 'app/components/rules/alignment.rb'
 require 'app/components/rules/separation.rb'
 require 'app/components/rules/follow.rb'
+require 'app/components/rules/decay_speed.rb'
 require 'app/components/debug/singleton_debug_vector_arrow.rb'
 require 'app/components/singleton_camera.rb'
 require 'app/components/stats/collision_damage.rb'
@@ -34,6 +35,7 @@ require 'app/systems/rules/alignment.rb'
 require 'app/systems/rules/separation.rb'
 require 'app/systems/rules/reset_change_vector.rb'
 require 'app/systems/rules/follow.rb'
+require 'app/systems/rules/decay_speed.rb'
 require 'app/systems/debug/debug_render_vector_arrow.rb'
 require 'app/systems/camera.rb'
 require 'app/systems/collision_damage.rb'
diff --git a/app/systems/rules/decay_speed.rb b/app/systems/rules/decay_speed.rb
new file mode 100644
index 0000000..490c7d0
--- /dev/null
+++ b/app/systems/rules/decay_speed.rb
@@ -0,0 +1,9 @@
+FF::Scn::BoidRules.add(
+  FF::Sys.new('DecaySpeed', priority: 50) do
+    FF::Cmp::DecaySpeed.each do |decay|
+      boid = decay.entities[0].components[FF::Cmp::Boid][0]
+      boid.vx *= decay.strength
+      boid.vy *= decay.strength
+    end
+  end
+)
diff --git a/app/systems/start_game.rb b/app/systems/start_game.rb
index 678100b..ed78339 100644
--- a/app/systems/start_game.rb
+++ b/app/systems/start_game.rb
@@ -44,6 +44,7 @@ FF::Sys.new('StartGame', priority: 50 ) do
     FF::Cmp::SingletonPlayer[0],
     FF::Cmp::Team.new(team: 'player'),
     FF::Cmp::Weapon.new,
+    FF::Cmp::DecaySpeed.new(strength: 0.9),
   )
 
 
-- 
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