Class: Theseus::Formatters::ASCII

Inherits:
Object
  • Object
show all
Defined in:
lib/theseus/formatters/ascii.rb,
lib/theseus/formatters/ascii/delta.rb,
lib/theseus/formatters/ascii/sigma.rb,
lib/theseus/formatters/ascii/upsilon.rb,
lib/theseus/formatters/ascii/orthogonal.rb

Overview

ASCII formatters render a maze as ASCII art. The ASCII representation is intended mostly to give you a “quick look” at the maze, and will rarely suffice for showing more than an overview of the maze’s shape.

This is the abstract superclass of the ASCII formatters, and provides helpers for writing to a textual “canvas”.

Direct Known Subclasses

Delta, Orthogonal, Sigma, Upsilon

Defined Under Namespace

Classes: Delta, Orthogonal, Sigma, Upsilon

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(width, height) ⇒ ASCII

Create a new ASCII canvas with the given width and height. The canvas is initially blank (set to whitespace).



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# File 'lib/theseus/formatters/ascii.rb', line 20

def initialize(width, height)
  @width, @height = width, height
  @chars = Array.new(height) { Array.new(width, " ") }
end

Instance Attribute Details

#height ⇒ Object (readonly)

The height of the canvas. This corresponds to, but is not necessarily the same as, the height of the maze.



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# File 'lib/theseus/formatters/ascii.rb', line 16

def height
  @height
end

#width ⇒ Object (readonly)

The width of the canvas. This corresponds to, but is not necessarily the same as, the width of the maze.



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# File 'lib/theseus/formatters/ascii.rb', line 12

def width
  @width
end

Instance Method Details

#[](x, y) ⇒ Object

Returns the character at the given coordinates.



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# File 'lib/theseus/formatters/ascii.rb', line 26

def [](x, y)
  @chars[y][x]
end

#[]=(x, y, char) ⇒ Object

Sets the character at the given coordinates.



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# File 'lib/theseus/formatters/ascii.rb', line 31

def []=(x, y, char)
  @chars[y][x] = char
end

#to_s ⇒ Object

Returns the canvas as a multiline string, suitable for displaying.



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# File 'lib/theseus/formatters/ascii.rb', line 36

def to_s
  @chars.map { |row| row.join }.join("\n")
end