From 464a82775a0059ad913a6b0ca2dc3abaa66d59d2 Mon Sep 17 00:00:00 2001
From: Florian Hanke <florian.hanke@gmail.com>
Date: Tue, 11 May 2010 22:47:30 +0200
Subject: [PATCH] + init hooks, default rotation

---
 gem/lib/core/initializer_hooks.rb | 22 +++++++++++++++++-----
 gem/lib/units/sprite.rb           | 15 +++++++--------
 gem/lib/units/thing.rb            |  3 +++
 3 files changed, 27 insertions(+), 13 deletions(-)

diff --git a/gem/lib/core/initializer_hooks.rb b/gem/lib/core/initializer_hooks.rb
index c0e8806..41d32ad 100644
--- a/gem/lib/core/initializer_hooks.rb
+++ b/gem/lib/core/initializer_hooks.rb
@@ -8,15 +8,27 @@ module InitializerHooks
   self.hooks = {}
   
   # Runs the hooks for this instance for
-  # each class and superclass up to Sprite.
+  # each class and superclass from Sprite on down.
   #
   def after_initialize
-    self.class.ancestors.each do |klass|
-      run_hooks_for klass
-      break if klass == Sprite
-    end
+    relevant_ancestors.each { |klass| run_hooks_for klass }
+  end
+  
+  # Relevant ancestors for self.
+  #
+  def relevant_ancestors
+    ancestors = self.class.ancestors
+    sprite? ? ancestors[0..ancestors.index(Sprite)] : ancestors[0..0]
   end
   
+  # Is this class a sprite?
+  #
+  def sprite?
+    is_a? Sprite
+  end
+  
+  # Get and run the hooks for the class.
+  #
   def run_hooks_for klass
     hooks = InitializerHooks.hooks[klass]
     hooks && hooks.each do |hook|
diff --git a/gem/lib/units/sprite.rb b/gem/lib/units/sprite.rb
index 943de49..ce3e323 100644
--- a/gem/lib/units/sprite.rb
+++ b/gem/lib/units/sprite.rb
@@ -42,7 +42,12 @@ def layer
   # Default rotation is upwards.
   #
   def rotation
-    @rotation || -Rotation::Half
+    @rotation || -Rotation::Quarter
+  end
+  #
+  #
+  def rotation= rotation
+    @rotation = rotation % (2*Math::PI)
   end
   
   class << self
@@ -60,7 +65,7 @@ def layer layer
     def rotation amount = nil, &block
       block ||= lambda { amount }
       InitializerHooks.append self do
-        self.rotation = block[]
+        self.rotation = block.call
       end
     end
     def random_rotation
@@ -154,12 +159,6 @@ def move
   #
   def moved; end
   
-  #
-  #
-  def rotation= rotation
-    @rotation = rotation % (2*Math::PI)
-  end
-  
   # Movement rules
   #
   # Note: Use these in method move.
diff --git a/gem/lib/units/thing.rb b/gem/lib/units/thing.rb
index d5b526a..8629d47 100644
--- a/gem/lib/units/thing.rb
+++ b/gem/lib/units/thing.rb
@@ -20,6 +20,7 @@ def layer
   end
   
   class << self
+    
     @@form_shape_class_mapping = {
       :circle  => CP::Shape::Circle, # :circle, radius
       :poly    => CP::Shape::Poly,   # :poly, CP::Vec2.new(-22, -18), CP::Vec2.new(-22, -10), etc.
@@ -38,6 +39,8 @@ def shape form, *args
         params << CP::Vec2.new(0.0, 0.0) unless CP::Vec2 === args.first
         
         @shape = shape_class.new *params
+        @shape.body.a = -Rotation::Quarter # default rotation
+        @shape
       end
     end
     def mass amount