Class: PlayLevel

Inherits:
Object
  • Object
show all
Defined in:
lib/escape_to_rubyconf/play_level.rb

Overview

inherit from Level? why?!?

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(window) ⇒ PlayLevel

Returns a new instance of PlayLevel.



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# File 'lib/escape_to_rubyconf/play_level.rb', line 8

def initialize window
  @window = window

  @begin = Gosu::Sample.new @window, File.dirname(__FILE__) + '/assets/begin.wav'

  # Create level elements
  @background = Gosu::Image.new @window, File.dirname(__FILE__) + '/assets/rubyconf-background.png'
  @ninja = Ninja.new self
  @snakes = []
  3.times { add_snake! }

  # Set ninja start and win positions
  offset = @ninja.boundary/2
  @start_position = [offset, offset]
  @win_position   = [@window.width - offset, @window.height - offset]

  # Add callback holders
  # @start_callbacks = []
  @win_callbacks  = []
  @fail_callbacks = []
  @quit_callbacks = []
end

Instance Attribute Details

#sounds ⇒ Object

Returns the value of attribute sounds.



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# File 'lib/escape_to_rubyconf/play_level.rb', line 7

def sounds
  @sounds
end

#state ⇒ Object

Returns the value of attribute state.



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# File 'lib/escape_to_rubyconf/play_level.rb', line 7

def state
  @state
end

#window ⇒ Object

Returns the value of attribute window.



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# File 'lib/escape_to_rubyconf/play_level.rb', line 7

def window
  @window
end

Instance Method Details

#add_snake! ⇒ Object 



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# File 'lib/escape_to_rubyconf/play_level.rb', line 80

def add_snake!
  @snakes << Snake.new(self)
end

#draw ⇒ Object 



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# File 'lib/escape_to_rubyconf/play_level.rb', line 120

def draw
  @background.draw 0, 0, 0
  @ninja.draw
  @snakes.each { |snake| snake.draw }
end

#fail! ⇒ Object 



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# File 'lib/escape_to_rubyconf/play_level.rb', line 89

def fail!
  stop
  @fail_callbacks.each { |c| c.call }
end

#ninja_escaped? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/escape_to_rubyconf/play_level.rb', line 71

def ninja_escaped?
  ( (Math::round(@ninja.x) == @win_position.first) &&
    (Math::round(@ninja.y) == @win_position.last) )
end

#on_fail(&block) ⇒ Object 



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# File 'lib/escape_to_rubyconf/play_level.rb', line 39

def on_fail &block
  @fail_callbacks << block
end

#on_quit(&block) ⇒ Object 



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# File 'lib/escape_to_rubyconf/play_level.rb', line 43

def on_quit &block
  @quit_callbacks << block
end

#on_win(&block) ⇒ Object

def on_start &block

@start_callbacks << block

end



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# File 'lib/escape_to_rubyconf/play_level.rb', line 35

def on_win &block
  @win_callbacks << block
end

#play_begin_sound ⇒ Object 



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# File 'lib/escape_to_rubyconf/play_level.rb', line 58

def play_begin_sound
  @begin.play
end

#quit! ⇒ Object 



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# File 'lib/escape_to_rubyconf/play_level.rb', line 94

def quit!
  stop
  @quit_callbacks.each { |c| c.call }
end

#rand_position ⇒ Object 



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# File 'lib/escape_to_rubyconf/play_level.rb', line 62

def rand_position
  x, y = 0, 0
  begin
    x, y = rand(@window.width), rand(@window.height)
  end while ((x < 120 && y < 120) ||
             (x > @window.width-120 && y > @window.height-120))
  [x, y]
end

#snakes_count ⇒ Object 



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# File 'lib/escape_to_rubyconf/play_level.rb', line 76

def snakes_count
  @snakes.size
end

#start! ⇒ Object 



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# File 'lib/escape_to_rubyconf/play_level.rb', line 47

def start!
  # @start_callbacks.each { |c| c.call }
  @ninja.x = @start_position[0]
  @ninja.y = @start_position[1]
  @snakes.each do |snake|
    snake.start *rand_position
    snake.end   *rand_position
  end
  play_begin_sound
end

#stop ⇒ Object 



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# File 'lib/escape_to_rubyconf/play_level.rb', line 99

def stop
  @ninja.stop_sneak
end

#update ⇒ Object 



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# File 'lib/escape_to_rubyconf/play_level.rb', line 103

def update
  quit! if @window.button_down? Gosu::KbEscape
  @ninja.update
  @snakes.each { |snake| snake.update }
  # Did the player make it?
  if ninja_escaped?
    win!
    return
  end
  # Check for collision and attacks
  @snakes.each do |snake|
    range = Gosu.distance @ninja.x, @ninja.y, snake.x, snake.y
    fail!         if range < snake.range
    snake.attack! if range < snake.range*2.5
  end
end

#win! ⇒ Object 



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# File 'lib/escape_to_rubyconf/play_level.rb', line 84

def win!
  stop
  @win_callbacks.each { |c| c.call }
end