Leveling up!!

app/models/habit.rb

@@ -29,6 +29,7 @@ class Habit < ActiveRecord::Base
     end
 
     self.score += value
+    self.user.exp += value
     
     # also add money. Only take away money if it was a mistake (aka, a checkbox)
     if (direction=='up') || (direction=='down' && clear==false && self.habit_type!=Habit::ALWAYS)

app/models/user.rb

@@ -9,4 +9,20 @@ class User < ActiveRecord::Base
   
   has_many :habits, :dependent => :destroy
   has_many :rewards, :dependent => :destroy
+  
+  before_save :calculate_experience
+  
+  def calculate_experience
+    self.exp = 0 if self.exp < 0
+    if (self.exp > self.tnl)
+      self.exp -= self.tnl # carry over
+      self.lvl += 1
+    end
+  end
+
+  #TODO figure this out. Google "RPG level up formula" or something
+  def tnl
+    # http://tibia.wikia.com/wiki/Formula
+    50*self.lvl**2 - 150*self.lvl + 200
+  end
 end

app/views/shared/_progressbar.erb

@@ -1,9 +1,11 @@
 <% if current_user %>
-  <div id="progressbar" style="width:30%;"><span id="tnl">(Level 1)&nbsp;&nbsp;&nbsp;<%= score %>/100</span></div>
+  <div id="progressbar" style="width:30%;">
+    <span id="tnl">(Level <%= current_user.lvl %>)&nbsp;&nbsp;&nbsp;<%= current_user.exp.to_i.to_s + "/" + current_user.tnl.to_i.to_s %></span>
+  </div>
   <script>
   $(function() {
     $( "#progressbar" ).progressbar({
-      value: <%= score %>
+      value: <%= (current_user.exp/current_user.tnl) * 100 %>
     });
   });
   </script>

db/migrate/20120206170948_add_lvl_experience_to_user.rb

@@ -0,0 +1,11 @@
+class AddLvlExperienceToUser < ActiveRecord::Migration
+  def up
+    add_column :users, :exp, :float, :default=>0.0
+    add_column :users, :lvl, :integer, :default=>1
+  end
+  
+  def down
+    remove_column :users, :exp
+    remove_column :users, :lvl
+  end
+end