lib/earth/pet/species.rb in earth-0.6.2 vs lib/earth/pet/species.rb in earth-0.6.3

@@ -27,26 +27,26 @@
     def [](name)
       find_by_name name.to_s
     end
 
     def marginal_dietary_requirement_fallback
-      total_diet_size = thoroughly_researched.map(&:weighted_diet_size).sum
+      total_diet_size = thoroughly_researched.map(&:weighted_diet_size).sum.to_f
       total_population = thoroughly_researched.sum(:population)
       return 0.0 unless total_population > 0.0
       average_weight = thoroughly_researched.weighted_average(:weight, :weighted_by => :population)
       return 0.0 unless average_weight > 0.0
       (total_diet_size / total_population) / average_weight
     end
   end
   
   def diet_size
     return unless weight and marginal_dietary_requirement and fixed_dietary_requirement
-    weight * marginal_dietary_requirement + fixed_dietary_requirement
+    weight.to_f * marginal_dietary_requirement + fixed_dietary_requirement
   end
   
   def weighted_diet_size
     return unless _diet_size = diet_size and _population = population
-    _diet_size * _population
+    _diet_size.to_f * _population
   end
   
   def to_s
     name
   end
\ No newline at end of file