Class: TowersApp

Inherits:
Object
  • Object
show all
Defined in:
lib/TowersApp_Class.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(target_object) ⇒ TowersApp

Returns a new instance of TowersApp.



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# File 'lib/TowersApp_Class.rb', line 4

def initialize(target_object)
  @target = target_object
  @messages = []
  puts "\nWelcome to the Tower of Hanoi game!"
  sleep 1.5
  puts "This is a game based on the Tower of Hanoi problem."
  sleep 1.5
  puts "Type 'render' after selecting a difficulty to display the towers."
  sleep 1.5
  puts "Type 'quit' anytime to leave the game."
  sleep 1.5
  puts "Ready? Please type in your name!"\
  "\nNo spaces, numbers, or special characters!"
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method_name, *args, &block) ⇒ Object 



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# File 'lib/TowersApp_Class.rb', line 108

def method_missing(method_name, *args, &block)
  @messages << method_name
  @target.send(method_name, *args, &block)
end

Instance Attribute Details

#app_difficulty ⇒ Object

Returns the value of attribute app_difficulty.



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# File 'lib/TowersApp_Class.rb', line 2

def app_difficulty
  @app_difficulty
end

#destination_tower ⇒ Object

Returns the value of attribute destination_tower.



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# File 'lib/TowersApp_Class.rb', line 2

def destination_tower
  @destination_tower
end

#player_name ⇒ Object

Returns the value of attribute player_name.



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# File 'lib/TowersApp_Class.rb', line 2

def player_name
  @player_name
end

#source_tower ⇒ Object

Returns the value of attribute source_tower.



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# File 'lib/TowersApp_Class.rb', line 2

def source_tower
  @source_tower
end

Instance Method Details

#choice_prompt_check(option) ⇒ Object

Checking for choice or render.



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# File 'lib/TowersApp_Class.rb', line 74

def choice_prompt_check (option)
  while true
    prompt_text(option)
    tower = gets.chomp.downcase.to_sym
    !!(/render/i.match(tower.to_s)) ? self.render : break
  end
  tower
end

#destination_tower_choice ⇒ Object

Picking a destination tower.



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# File 'lib/TowersApp_Class.rb', line 104

def destination_tower_choice
  tower_choice_prompt(:destination)
end

#difficulty_prompt ⇒ Object 



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# File 'lib/TowersApp_Class.rb', line 32

def difficulty_prompt
  puts "\nHello, #{@player_name}. Select a difficulty level!"\
       "\n[EASY || MEDIUM || HARD]"
  begin
    @app_difficulty = gets.chomp.downcase
    quit?(@app_difficulty.to_s)
    raise StandardError if !(/easy|medium|hard/i.match(@app_difficulty))
    @app_difficulty = @app_difficulty.to_sym
  rescue
    puts "\nERROR: did not correctly enter the difficulty."\
        " Please try again."
    retry
  end
  self.set_difficulty(@app_difficulty)
end

#player_name_prompt ⇒ Object 



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# File 'lib/TowersApp_Class.rb', line 19

def player_name_prompt
  begin
    @player_name = gets.chomp.downcase.capitalize
    quit?(@player_name)
    raise StandardError if !!(/\s+|\W|\d/.match(@player_name))
  rescue
    puts "\nERROR: did not correctly enter the player's name."\
        " Please try again."
    retry
  end
  self.set_player_name(@player_name)
end

#prompt_text(option) ⇒ Object

Text output for prompts.



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# File 'lib/TowersApp_Class.rb', line 61

def prompt_text (option)
  puts "\nWhose disc will you remove?" if option == :source
  puts "\nWhere would you like to place the disc?" if option == :destination
  puts "[FIRST || SECOND || THIRD]"
end

#set_choice(choice, option) ⇒ Object

Store choice in instance variables



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# File 'lib/TowersApp_Class.rb', line 68

def set_choice (choice,option)
  @source_tower = choice if option == :source
  @destination_tower = choice if option == :destination
end

#source_tower_choice ⇒ Object

Picking a source tower.



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# File 'lib/TowersApp_Class.rb', line 99

def source_tower_choice
  tower_choice_prompt(:source)
end

#tower_choice_error(tower_choice, option = {}) ⇒ Object

Check for whether a valid choice of tower was made.

Raises:

  • (StandardError) 


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# File 'lib/TowersApp_Class.rb', line 50

def tower_choice_error(tower_choice, option = {})
  topmost_choice = self.towers[tower_choice][-1]
  topmost_source = self.towers[@source_tower][-1]
  raise StandardError if\
    !(/first|second|third/i.match(tower_choice))\
    ||(option == :source && self.towers[tower_choice].empty?)\
    ||((option == :destination && topmost_choice < topmost_source) \
    unless self.towers[tower_choice].empty?)
end

#tower_choice_prompt(option) ⇒ Object

Prompt for tower choice.



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# File 'lib/TowersApp_Class.rb', line 84

def tower_choice_prompt (option)
  begin
    tower = choice_prompt_check(option)
    quit?(tower.to_s)
    set_choice(tower,option)
    self.tower_choice_error(tower,option)
  rescue
    puts "ERROR: did not correctly enter a tower choice."\
      " Please try again."
    retry
  end
  tower
end