Class: Dialogue::Speaker

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

Overview

Speaker holds the functionality for going through a dialogue tree.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(file = "", debug = false) ⇒ Speaker

Returns a new instance of Speaker



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# File 'lib/sapling/dialogue.rb', line 40

def initialize(file="", debug=false)
  @file = file
  @debug = debug
end

Instance Attribute Details

#debug ⇒ Object

Status of verbose/debug mode. True = on; false = off.



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# File 'lib/sapling/dialogue.rb', line 38

def debug
  @debug
end

#file ⇒ Object

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



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# File 'lib/sapling/dialogue.rb', line 36

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/dialogue.rb', line 47

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

  Dialogue.display_trunk(tree[0], false)
  branches = Gardner.prune_branches(tree[1])

  next_branch = 1
  until next_branch == 0 do
    next_branch = talk(branches[next_branch], next_branch)
  end

  puts "\n#{branches[0]["desc"]}"
  exit
end

#get_response(branch) ⇒ Integer

Get a response for the displayed branch

Parameters:

  • branch (Hash) —

    A branch data set

Returns:

  • (Integer) —

    the next branch



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# File 'lib/sapling/dialogue.rb', line 93

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

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

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

  return response
end

#talk(branch, branch_no) ⇒ Integer

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

Parameters:

  • branch (Hash) —

    A branch data set

  • branch_no (Integer) —

    The branch number

Returns:

  • (Integer) —

    The number of the next branch



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# File 'lib/sapling/dialogue.rb', line 67

def talk(branch, branch_no)
  # 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

  Dialogue.display_branch(branch, branch_no, @debug)

  response = get_response(branch)

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

  return response
end