Class: Typingtutor::Line

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

Instance Method Summary collapse

Constructor Details

#initialize(string) ⇒ Line

Returns a new instance of Line.



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# File 'lib/typingtutor/line.rb', line 3

def initialize(string)
  @original = string
  @actual   = ""
  @position = 0
  @keystrokes = 0
end

Instance Method Details

#actual_char ⇒ Object 



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# File 'lib/typingtutor/line.rb', line 45

def actual_char;   @actual[@position];   end

#expected_char ⇒ Object 



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# File 'lib/typingtutor/line.rb', line 44

def expected_char; @original[@position]; end

#ok? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/typingtutor/line.rb', line 46

def ok?; expected_char == actual_char; end

#play ⇒ Object 



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# File 'lib/typingtutor/line.rb', line 10

def play
  print "\n#{@original.ljust(80)}\r"

  while(true) do
    char = STDIN.getch
    case char.ord
    when 3 then exit(1) # CTRL-C
    when 13 then break # enter
    when 127 # backspace
      @actual.chop!
      @position = [@position - 1, 0].max
      print_backspace
    else
      @actual += char
      print_char
      @position += 1
      @keystrokes +=1
    end
  end
  return stats
end

#print_backspace ⇒ Object 



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# File 'lib/typingtutor/line.rb', line 40

def print_backspace
  print "\b#{HighLine.color(expected_char, :plain)}\b"
end

#print_char ⇒ Object 



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

def print_char
  if actual_char
    print HighLine.color(actual_char, ok? ? :correct : :error)
  else
    print HighLine.color(expected_char, :plain)
  end
end

#stats ⇒ Object 



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# File 'lib/typingtutor/line.rb', line 48

def stats
  { total_chars: @original.length,
    correct_chars: @original.length.times.select {|i| @original[i] == @actual[i] }.size,
    keystrokes: @keystrokes,
    total_words: @original.split(' ').size
  }
end