Refactor event bus to use non-retrievable events;

update collision handling and add new inventory initialization;
add torch lighting in fog shader;

game/state.rb

@@ -4,4 +4,35 @@ class State
   # also their health, stealth, and memory bars
   # it can handle mouse input for inventory management and item usage
   # it can also handle keyboard input for quick item usage
+
+  def initialize
+    @inventory = {
+      # basic resources
+      :wood => 0,
+      :metal => 0,
+      :science => 0,
+
+      # nuetrals
+      :torch => 0,
+      :radar => 0,
+
+      # placeable weapons
+      :landmine => 0,
+      :shrodingers_mine => 0,
+      :event_horizon => 0,
+
+      # attack weapons
+      :occams_razor => 0,
+      :quantum_bow => 0,
+      :blade_of_recursion => 0,
+
+      # utility weapon
+      :lorentz_field => 0
+    }
+    @inventory_selected = :wood
+    @upgrades = []
+    @health = 100
+    @stealth = 100
+    @memory = 256
+  end
 end