82 lines
2.3 KiB
Ruby
82 lines
2.3 KiB
Ruby
require_relative './gardner'
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# Dialogue is the module for traversing an existing tree.
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module Dialogue
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# Speaker holds the functionality for going through a dialogue tree.
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class Speaker
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# The file, which should be a dialogue tree YAML file.
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attr_accessor :file
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# Status of verbose/debug mode. True = on; false = off.
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attr_accessor :debug
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def initialize(file="", debug=false)
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@file = file
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@debug = debug
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end
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# Conversation handles navigating the tree, until the option to end is
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# reached.
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def conversation()
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tree = Gardner.prune_trunk(@file)
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Gardner.display_trunk(tree[0], false)
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branches = Gardner.prune_branches(tree[1])
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next_branch = 1
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until next_branch == 0 do
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next_branch = talk(branches[next_branch], next_branch)
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end
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puts "\n#{branches[0]["desc"]}"
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exit
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end
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# Talk displays a branch, the options, and prompts for a response.
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#
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# @param branch [Hash] A branch data set
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# @param branch_no [Integer] The branch number
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# @return [Integer] The number of the next branch
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def talk(branch, branch_no)
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# If there are no options on this branch, we assume it's a terminal
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# branch. Return 0, and end the program.
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if branch["options"].empty?
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puts "\n#{branch["desc"]}\n\n"
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return 0
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end
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Gardner.display_branch(branch, branch_no, @debug)
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response = get_response(branch)
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unless response == 0
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puts "\n"
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10.times { print "*" }
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puts "\n(Your choice: #{branch["options"][response].keys[0]})"
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response = branch["options"][response].values[0].to_i
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end
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return response
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end
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# Get a response for the displayed branch
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#
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# @param branch [Hash] A branch data set
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# @return [Integer] the next branch
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def get_response(branch)
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valid_options = branch["options"].keys.join(", ")
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print "\n[#{valid_options}]> "
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STDOUT.flush
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response = STDIN.gets.chomp.to_i
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until branch["options"].keys.include?(response) or response == 0
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print "[## Invalid options. "
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print "Valid options are #{valid_options}, or 0 to exit."
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print "\n[#{valid_options}]> "
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response = STDIN.gets.chomp.to_i
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end
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return response
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end
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end
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end
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