Class: Badline::Joystick

Inherits:
Object
  • Object
show all
Defined in:
lib/badline/joystick.rb

Constant Summary collapse

DIRECTIONS = 
{ up: 0, down: 1, left: 2, right: 3, fire: 4 }.freeze

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Joystick

Returns a new instance of Joystick.



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

def initialize
  @pressed = {}
end

Instance Method Details

#port_bits ⇒ Object 



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# File 'lib/badline/joystick.rb', line 19

def port_bits
  bits = 0xff
  DIRECTIONS.each { |dir, bit| bits &= ~(1 << bit) if @pressed[dir] }
  bits
end

#press(direction) ⇒ Object 



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# File 'lib/badline/joystick.rb', line 11

def press(direction)
  @pressed[direction] = true if DIRECTIONS.key?(direction)
end

#release(direction) ⇒ Object 



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# File 'lib/badline/joystick.rb', line 15

def release(direction)
  @pressed.delete(direction)
end