Class: RubyAI

Inherits:
Gosu::Window
  • Object
show all
Defined in:
lib/ruby-ai.rb

Constant Summary collapse

COLORS = 
{
  :player => [1.0, 0.5764706134796143, 0.0, 1.0], #orange, paintbrush 'tangerine'
  :goal => [0.0, 0.9764706492424011, 0.0, 1.0], #green, paintbrush 'spring'
  :wall => [0.5803921818733215, 0.32156863808631897, 0.0, 1.0], #brown, paintbrush 'mocha'
  :empty => [0.0, 0.0, 0.0, 1.0], #black, paintbrush 'licorice'
}
DIMS = 
{:x => 64, :y => 64}

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(level) ⇒ RubyAI

Returns a new instance of RubyAI.



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# File 'lib/ruby-ai.rb', line 24

def initialize(level)

  super(DIMS[:x] * 10, DIMS[:y] * 10, false)

  self.caption = 'Ruby AI'
  @drawn = []
  @ui = UI.new(self)
  @drawn << @ui
  @tiles = []
  @level = level

  load_level

  @ai = AI.new(@player)
  unless @ai.respond_to?('level', "#{@level}")
    puts "Your AI class must define a method 'level(num)'"
    @player.stop = true
  end
  @ai_tick = 0.5
  @last_ai_update = Time.now
end

Instance Attribute Details

#tiles ⇒ Object (readonly)

Returns the value of attribute tiles.



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# File 'lib/ruby-ai.rb', line 13

def tiles
  @tiles
end

Instance Method Details

#add_tile(pixel, x, y) ⇒ Object 



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# File 'lib/ruby-ai.rb', line 103

def add_tile(pixel, x, y)
  if pixel_equal?(pixel, COLORS[:wall])
    wall = Wall.new(self, {:x => x, :y => y})
    @tiles << wall
    @drawn << wall
  elsif pixel_equal?(pixel, COLORS[:player])
    @player = Player.new(self, {:x => x, :y => y})
    @drawn << @player

    empty = Empty.new(self, {:x => x, :y => y})
    @tiles << empty
  elsif pixel_equal?(pixel, COLORS[:goal])
    @goal = Goal.new(self, {:x => x, :y => y})
    @tiles << @goal
    @drawn << @goal
  elsif pixel_equal?(pixel, COLORS[:empty])
    empty = Empty.new(self, {:x => x, :y => y})
    @tiles << empty
  end
end

#button_down(id) ⇒ Object 



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# File 'lib/ruby-ai.rb', line 174

def button_down(id)
  if id == Gosu::KbEscape
    close
  elsif id == Gosu::KbReturn
    if @player.stop || @won
      exit
    end
    if @player.pause
      @player.pause = false
    else
      @player.pause = true
    end
  elsif id == Gosu::KbDown
    @ai_tick = @ai_tick * 2 unless @ai_tick > 1
  elsif id == Gosu::KbUp
    @ai_tick = @ai_tick / 2 unless @ai_tick < 0.01
  end
end

#centering_modifiers(image_dims) ⇒ Object 



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# File 'lib/ruby-ai.rb', line 86

def centering_modifiers(image_dims)
  mods = {:x => 0, :y => 0}
  [:x, :y].each do |dim|
    if image_dims[dim] < DIMS[dim]
      diff = DIMS[dim]- image_dims[dim]
      mods[dim] = diff / 2
    end
  end
  mods
end

#draw ⇒ Object 



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# File 'lib/ruby-ai.rb', line 170

def draw
  @drawn.each {|o| o.send(:draw)}
end

#load_level ⇒ Object 



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# File 'lib/ruby-ai.rb', line 46

def load_level
  level_image = Gosu::Image.new(self, "#{Dir.pwd}/levels/level#{@level}.png", false)
  puts "Loading #{level_image.width * level_image.height} tiles."
  image_dims = {:x => level_image.width, :y => level_image.height}

  reverse = {:x => [true, false].sample, :y => [true, false].sample}
  # reverse = {:x => false, :y => false}
  rotate_by = [0, 90, 180, 270].sample
  # rotate_by = 270

  count = 0
  coords = {}
  mods = centering_modifiers(image_dims)

  image_dims[:x].times do |x|
    image_dims[:y].times do |y|
      count += 1
      if count > 99
        print '.'
        count = 0
      end

      coords[:x] = x
      coords[:y] = y

      [:x, :y].each do |dim|
        coords[dim] = image_dims[dim] - 1 - coords[dim] if reverse[dim]
      end

      (rotate_by / 90).times do
        rotate90!(image_dims, coords)
      end

      pixel = level_image.get_pixel(x, y)
      add_tile(pixel, (coords[:x] + mods[:x]) * 10, (coords[:y] + mods[:y]) * 10)
    end
  end
  puts 'Done.'
end

#pixel_equal?(pixel, values) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ruby-ai.rb', line 124

def pixel_equal?(pixel, values)
  4.times do |i|
    return false unless rough_equal?(pixel[i], values[i])
  end
  true
end

#rotate90!(dims, coords) ⇒ Object 



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# File 'lib/ruby-ai.rb', line 97

def rotate90!(dims, coords)
  old = coords[:y]
  coords[:y] = coords[:x]
  coords[:x] = dims[:y] - 1 - old
end

#rough_equal?(float1, float2) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ruby-ai.rb', line 131

def rough_equal?(float1, float2)
  one = (float1 * 100).to_i
  two = (float2 * 100).to_i
  one == two
end

#update ⇒ Object 



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# File 'lib/ruby-ai.rb', line 137

def update
  if won?
    @ui.text = 'Success! Press <enter> to exit.'
    return
  end

  if @player.stop
    @ui.text = 'Game over. Press <enter> to exit.'
    return
  end

  if @player.pause
    @ui.text = 'Paused. Press <enter> to resume.'
    return
  end

  @ui.text = ''

  if Time.now - @last_ai_update > @ai_tick
    @last_ai_update = Time.now
    @player.send(:moved=, false)
    @ai.level(@level.to_i)
  end
end

#won? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ruby-ai.rb', line 162

def won?
  return true if @won
  if @player.x == @goal.x && @player.y == @goal.y
    puts 'Success!'
    @won = true
  end
end