Finished allowing placement and collision detection. However, the placement is very inconsistent. Thinking about redoing coordinates again...

consumer.rb

@@ -14,7 +14,7 @@ TASKS = [
 ]
 
 class Consumer
-  attr_reader :draw_x, :draw_y
+  attr_reader :draw_x, :draw_y, :size_x, :size_y
   # Create consumer at a position with the number and rate specified
   # @param x [Integer] X position to start at
   # @param y [Integer] Y position to start at
@@ -30,6 +30,7 @@ class Consumer
     }
     @task_index = 0
     @tooltip = @parent.register_dialouge(@x, @y, @box_size * SIZE, @box_size * SIZE, TASKS[@task_index], 500)
+    @size_x = @size_y = 3    
   end
 
   # Consumes numbers created
@@ -37,7 +38,7 @@ class Consumer
   # @param camera_x [Integer] The camera X position
   # @param camera_y [Integer] The camera Y position
   # @param camera_zoom [Float] The camera zoom
-  def update(delta_mult, camera_x, camera_y, camera_zoom, mouse_x, mouse_y, mouse_used)
+  def update(delta_mult, camera_x, camera_y, camera_zoom, mouse_x, mouse_y)
     @draw_x = (((((@screen_width / @box_size.to_f) / 2.0) + (@x - camera_x) * camera_zoom) * @box_size) + BORDER * camera_zoom)
     @draw_y = (((((@screen_height / @box_size.to_f) / 2.0) + (@y - camera_y) * camera_zoom) * @box_size) + BORDER * camera_zoom)
     @camera_zoom = camera_zoom