Refactor weapon system: implement WeaponHandler to manage LorentzField and prepare for additional weapons; update shader to incorporate lorentz_field uniform for visual effects.

game/weapons/handler.rb

@@ -0,0 +1,31 @@
+require_relative 'lorentz_field'
+#require_relative 'occams_razor'
+#require_relative 'quantum_bow'
+#require_relative 'blade_of_recursion'
+
+class WeaponHandler
+  def initialize
+    @weapons = {
+      lorentz_field: LorentzField.new,
+      #occams_razor: OccamsRazor.new,
+      #quantum_bow: QuantumBow.new,
+      #blade_of_recursion: BladeOfRecursion.new
+    }
+  end
+
+  def update(dt)
+    @weapons.each_value { |weapon| weapon.update(dt) }
+
+    selected_item = $bus.get(:selected_item)
+    return unless @weapons.key?(selected_item)
+
+    weapon = @weapons[selected_item]
+    if $bus.get(:count, selected_item) > 0 && Gosu.button_down?(Gosu::KB_SPACE)
+      weapon.attack
+    end
+  end
+
+  def draw
+    @weapons.each_value(&:draw)
+  end
+end