Class: Dialogue::Speaker

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

Overview

Spealer holds the functionality for viewing and going through a dialogue tree.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Speaker

Returns a new instance of Speaker



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# File 'lib/sapling.rb', line 106

def initialize
  @file = ""
end

Instance Attribute Details

#file ⇒ Object

The file, which should be a dialogue tree YAML file.



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

def file
  @file
end

Instance Method Details

#conversation ⇒ Object

Conversation handles navigating the tree, until the option to end is reached.



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# File 'lib/sapling.rb', line 112

def conversation()
  tree = Gardner.grow(@file)

  10.times { print "*" }
  next_branch = talk(tree[1])
  until next_branch == 0 do
    next_branch = talk(tree[next_branch])
  end

  puts tree[0]["desc"]
  exit
end

#talk(branch) ⇒ Integer

Talk displays a branch, the options, and prompts for a response

Parameters:

  • branch (Hash) —

    A branch data set

Returns:

  • (Integer) —

    The number of the next branch



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# File 'lib/sapling.rb', line 129

def talk(branch)
  # If there are no options on this branch, we assume it's a terminal
  # branch. Return 0, and end the program.
  if branch["options"].empty?
    puts "\n#{branch["desc"]}\n\n"
    return 0
  end

  valid_options = branch["options"].keys.join(", ")

  puts "\n#{branch["desc"]}\n\n"
  branch["options"].each_pair do |k,v|
    puts "\t#{k}: #{v.keys[0]}"
  end

  print "\n[#{valid_options}]> "
  STDOUT.flush
  response = STDIN.gets.chomp.to_i

  until branch["options"].keys.include?(response)
    print "[## Invalid options. "
    print "Valid options are #{valid_options}, or 0 to exit."
    print "\n[#{valid_options}]> "
    response = STDIN.gets.chomp.to_i
  end

  puts "\n"
  10.times { print "*" }
  puts "\n(Your choice: #{branch["options"][response].keys[0]})"
  return branch["options"][response].values[0].to_i
end