Implement health bar system: add HealthBar class for managing health, integrate health updates in HUDLayer, and modify enemy attack handling to reflect damage taken.

game/weapons/blade_of_recursion.rb

@@ -0,0 +1,30 @@
+class BladeOfRecursion
+  def initialize
+    @damage = 1
+    @range = 200
+    @speed = 500
+    @x = 0
+    @y = 0
+    @direction = nil
+  end
+
+  def attack(direction)
+    @direction = direction
+    @x, @y = $bus.get(:player_position)
+  end
+
+  def update(dt)
+    return unless @direction
+
+    @x += Math.cos(@direction) * @speed * dt
+    @y += Math.sin(@direction) * @speed * dt
+
+    $bus.get(:attack, @x, @y, @range, @damage)
+
+    # If the blade has traveled its max range, reset it
+    player_x, player_y = $bus.get(:player_position)
+    if Math.hypot(@x - player_x, @y - player_y) > @range
+      @direction = nil
+    end
+  end
+end

game/weapons/handler.rb

@@ -20,8 +20,16 @@ class WeaponHandler
     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
+    if $bus.get(:count, selected_item) > 0
+      if Gosu.button_down?(Gosu::KB_SPACE)
+        direction = $bus.get(:player_direction)
+        weapon.attack(direction)
+      elsif Gosu.button_down?(Gosu::MS_LEFT)
+        player_x, player_y = $bus.get(:player_position)
+        mouse_x, mouse_y = $bus.get(:mouse_position)
+        direction = Math.atan2(mouse_y - player_y, mouse_x - player_x)
+        weapon.attack(direction)
+      end
     end
   end
 

game/weapons/lorentz_field.rb

@@ -6,6 +6,10 @@ class LorentzField
     @active = false
     @font = Gosu::Font.new(24, name: "assets/fonts/tn.ttf")
 
+    $bus.on(:lorentz_field?) do
+      next @active
+    end
+
     $bus.on(:lorentz_field) do
       if @active
         t = @time
@@ -27,12 +31,12 @@ class LorentzField
     end
   end
 
-  def attack
+  def attack(_direction)
     return if @active
     $bus.emit(:consume, :lorentz_field, 1)
     @active = true
     @time = 0
-    $bus.emit(:lorentz_field?, true)
+    $bus.emit(:lorentz_field!, true)
   end
 
   def update(dt)
@@ -42,7 +46,7 @@ class LorentzField
     if @time >= BASE_TIME
       @time = 0
       @active = false
-      $bus.emit(:lorentz_field?, false)
+      $bus.emit(:lorentz_field!, false)
     end
   end
 

game/weapons/occams_razor.rb

@@ -8,7 +8,7 @@ class OccamsRazor
     @range = 45 # how many pixels from player center to enemy center the attack hits, this is a melee weapon so it should be small
   end
 
-  def attack
+  def attack(_direction)
     return if @active
 
     @active = true
@@ -16,7 +16,7 @@ class OccamsRazor
 
     # Check for enemies in range and deal damage
     player_x, player_y = $bus.get(:player_position)
-    $bus.emit(:occams_razor_attack, player_x, player_y, @range, @damage)
+    $bus.emit(:attack, player_x, player_y, @range, @damage)
   end
 
   def update(dt)