Merge pull request #11 from zenspider/debugging_visualizations

Debugging visualizations

lib/rtanque/gui/shell.rb

@@ -5,16 +5,27 @@ module Gui
  class Shell
  attr_reader :shell
 
+ DEBUG = ENV["DEBUG_SHELLS"]
+
  def initialize(window, shell)
  @window = window
  @shell = shell
+ @x0 = shell.position.x
+ @y0 = @window.height - shell.position.y
  @shell_image = Gosu::Image.new(@window, Gui.resource_path("images/bullet.png"))
  end
 
  def draw
  position = [self.shell.position.x, @window.height - self.shell.position.y]
  @shell_image.draw_rot(position[0], position[1], ZOrder::SHELL, 0, 0.5, 0.5)
+
+ if DEBUG then
+ white = Gosu::Color::WHITE
+ pos = shell.position
+ x1, y1 = pos.x, @window.height - pos.y
+ @window.draw_line @x0, @y0, white, x1, y1, white, ZOrder::SHELL
+ end
  end
  end
  end
-end
+end

lib/rtanque/gui/window.rb

@@ -26,6 +26,8 @@ def initialize(match)
  super(@arena.width, @arena.height, false, UPDATE_INTERVAL)
  self.caption = self.class.name.split('::').first
  @background = Gosu::Image.new(self, Gui.resource_path("images/grass.png"))
+
+ @draw_procs = []
  end
 
  def update
@@ -46,7 +48,17 @@ def draw_drawables
  self.gui_bots.draw
  self.gui_shells.draw
  self.gui_explosions.draw
+
+ @draw_procs.each do |proc|
+ proc.call self
+ end
+
+ @draw_procs.clear
+ end
+
+ def add_draw_proc &b
+ @draw_procs << b
  end
  end
  end
-end
+end