//  Animals.kt  Copyright (c) Kari Laitinen

//  http://www.naturalprogramming.com

//  2020-10-27  File created.

//  Demonstrating a class that has both the primary and a secondary
//  constructor.

class  Animal( val species_name : String ) // primary constructor
{
   var stomach_contents : String = ""
   
   // The following secondary constructor must call the primary constructor.
   
   constructor( another_animal : Animal ) : this( another_animal.species_name )
   {
      stomach_contents = another_animal.stomach_contents
   }
   
   fun feed( food_for_this_animal : String )
   {
      stomach_contents  =
          stomach_contents  +  food_for_this_animal  +  ", "
   }

   fun make_speak()
   {
      print( "\n Hello, I am a " + species_name     + "."
           + "\n I have eaten: " + stomach_contents  + "\n" )
   }
}

fun main()
{
   var cat_object  =  Animal( "cat" )
  
   var dog_object  =  Animal( "vegetarian dog" )

   cat_object.feed( "fish" )
   cat_object.feed( "chicken" )

   dog_object.feed( "tomatoes" )
   dog_object.feed( "potatoes" )

   var another_cat  =  Animal( cat_object )

   another_cat.feed( "milk" )

   cat_object.make_speak()
   dog_object.make_speak()
   another_cat.make_speak()

   print( "\n" )
}