Class: Pacman::Arcade::Ghost

Inherits:
Object
  • Object
show all
Defined in:
lib/pacman/arcade/ghost.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(spawn:, brain:, direction: Direction.up) ⇒ Ghost

Returns a new instance of Ghost.



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# File 'lib/pacman/arcade/ghost.rb', line 8

def initialize(spawn:, brain:, direction: Direction.up)
  @spawn = spawn
  @brain = brain
  @direction = direction
  @position = spawn.start
  @state = :normal
end

Instance Attribute Details

#direction ⇒ Object (readonly)

Returns the value of attribute direction.



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# File 'lib/pacman/arcade/ghost.rb', line 6

def direction
  @direction
end

#position ⇒ Object (readonly)

Returns the value of attribute position.



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# File 'lib/pacman/arcade/ghost.rb', line 6

def position
  @position
end

Instance Method Details

#advance(world) ⇒ Object 



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# File 'lib/pacman/arcade/ghost.rb', line 16

def advance(world)
  @direction = choose_direction(world)
  @position = world.maze.wrap(position.step(@direction))
  revive if eaten? && position == spawn.start
end

#calm ⇒ Object 



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# File 'lib/pacman/arcade/ghost.rb', line 26

def calm
  @state = :normal unless eaten?
end

#devour ⇒ Object 



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# File 'lib/pacman/arcade/ghost.rb', line 30

def devour
  @state = :eaten
end

#eaten? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/pacman/arcade/ghost.rb', line 38

def eaten?
  @state == :eaten
end

#edible? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/pacman/arcade/ghost.rb', line 34

def edible?
  @state == :frightened
end

#frighten ⇒ Object 



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# File 'lib/pacman/arcade/ghost.rb', line 22

def frighten
  @state = :frightened unless eaten?
end

#respawn ⇒ Object 



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# File 'lib/pacman/arcade/ghost.rb', line 42

def respawn
  @position = spawn.start
  @direction = Direction.up
  @state = :normal
end