Class: Badline::Keyboard

Inherits:
Object
  • Object
show all
Includes:
IntegerHelper
Defined in:
lib/badline/keyboard.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from IntegerHelper

#bcd, #bcd_to_i, #format16, #format8, #high_byte, #low_byte, #signed_int8, #uint16

Constructor Details

#initialize ⇒ Keyboard

Returns a new instance of Keyboard.



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# File 'lib/badline/keyboard.rb', line 9

def initialize
  @keys = []

  @matrix = [
    %i[delete return cursor_h f7 f1 f3 cursor_v],
    %i[3 w a 4 z s e lshift],
    %i[5 r d 6 c f t x],
    %i[7 y g 8 b h u v],
    %i[9 i j 0 m k o n],
    %i[+ p l - . : @ ,],
    %i[£ * ; clr_home rshift = up /],
    %i[1 left control 2 space cbm q run_stop]
  ]
end

Instance Attribute Details

#keys ⇒ Object (readonly)

Returns the value of attribute keys.



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# File 'lib/badline/keyboard.rb', line 7

def keys
  @keys
end

#matrix ⇒ Object (readonly)

Returns the value of attribute matrix.



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# File 'lib/badline/keyboard.rb', line 7

def matrix
  @matrix
end

Instance Method Details

#press(key) ⇒ Object 



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# File 'lib/badline/keyboard.rb', line 24

def press(key)
  @keys << key if valid_key?(key)
end

#read_a(_port_a, _port_b) ⇒ Object 



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# File 'lib/badline/keyboard.rb', line 28

def read_a(_port_a, _port_b)
  0xff
end

#read_b(port_a, _port_b) ⇒ Object 



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# File 'lib/badline/keyboard.rb', line 32

def read_b(port_a, _port_b)
  return 0xff unless keys.any?

  output = 0xff

  matrix.each_with_index do |row, a|
    next unless port_a[a].zero?

    row.each_with_index do |key, b|
      output -= (1 << b) if keys.include?(key)
    end
  end

  output
end

#release(key) ⇒ Object 



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# File 'lib/badline/keyboard.rb', line 48

def release(key)
  @keys.reject! { |k| k == key }
end