Class: CyberarmEngine::Background

Inherits:
Object
  • Object
show all
Defined in:
lib/cyberarm_engine/background.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(x: 0, y: 0, z: 0, width: 0, height: 0, background: Gosu::Color::BLACK, angle: 0, debug: false) ⇒ Background

Returns a new instance of Background.



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# File 'lib/cyberarm_engine/background.rb', line 6

def initialize(x: 0, y: 0, z: 0, width: 0, height: 0, background: Gosu::Color::BLACK, angle: 0, debug: false)
  @x = x
  @y = y
  @z = z
  @width = width
  @height = height
  @debug = debug

  @paint  = Paint.new(background)
  @angle  = angle

  @top_left     = Vector.new(@x, @y)
  @top_right    = Vector.new(@x + @width, @y)
  @bottom_left  = Vector.new(@x, @y + @height)
  @bottom_right = Vector.new(@x + @width, @y + @height)
end

Instance Attribute Details

#angle ⇒ Object

Returns the value of attribute angle.



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# File 'lib/cyberarm_engine/background.rb', line 3

def angle
  @angle
end

#background ⇒ Object

Returns the value of attribute background.



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# File 'lib/cyberarm_engine/background.rb', line 4

def background
  @background
end

#debug ⇒ Object

Returns the value of attribute debug.



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# File 'lib/cyberarm_engine/background.rb', line 3

def debug
  @debug
end

#height ⇒ Object

Returns the value of attribute height.



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# File 'lib/cyberarm_engine/background.rb', line 3

def height
  @height
end

#width ⇒ Object

Returns the value of attribute width.



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# File 'lib/cyberarm_engine/background.rb', line 3

def width
  @width
end

#x ⇒ Object

Returns the value of attribute x.



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# File 'lib/cyberarm_engine/background.rb', line 3

def x
  @x
end

#y ⇒ Object

Returns the value of attribute y.



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# File 'lib/cyberarm_engine/background.rb', line 3

def y
  @y
end

#z ⇒ Object

Returns the value of attribute z.



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# File 'lib/cyberarm_engine/background.rb', line 3

def z
  @z
end

Instance Method Details

#debug_outline ⇒ Object 



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# File 'lib/cyberarm_engine/background.rb', line 81

def debug_outline
  # Top
  Gosu.draw_line(
    @x,          @y,           Gosu::Color::RED,
    @x + @width, @y,           Gosu::Color::RED,
    @z
  )

  # Right
  Gosu.draw_line(
    @x + @width, @y,           Gosu::Color::RED,
    @x + @width, @y + @height, Gosu::Color::RED,
    @z
  )

  # Bottom
  Gosu.draw_line(
    @x + @width, @y + @height, Gosu::Color::RED,
    @x, @y + @height,          Gosu::Color::RED,
    @z
  )

  # Left
  Gosu.draw_line(
    @x, @y + @height,          Gosu::Color::RED,
    @x, @y,                    Gosu::Color::RED,
    @z
  )
end

#draw ⇒ Object 



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# File 'lib/cyberarm_engine/background.rb', line 23

def draw
  Gosu.clip_to(@x, @y, @width, @height) do
    Gosu.draw_quad(
      @top_left.x,     @top_left.y,     @paint.top_left,
      @top_right.x,    @top_right.y,    @paint.top_right,
      @bottom_right.x, @bottom_right.y, @paint.bottom_right,
      @bottom_left.x,  @bottom_left.y,  @paint.bottom_left,
      @z
    )
  end

  debug_outline if @debug
end

#shortest_distance(point, la, lb) ⇒ Object 



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# File 'lib/cyberarm_engine/background.rb', line 70

def shortest_distance(point, la, lb)
  a = la.x - lb.x
  b = la.y - lb.y
  c = Gosu.distance(la.x, la.y, lb.x, lb.y)
  p a, b, c
  d = (a * point.x + b * point.y + c).abs / Math.sqrt(a * a + b * b)
  puts "Distance: #{d}"
  exit!
  d
end

#update ⇒ Object 



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# File 'lib/cyberarm_engine/background.rb', line 37

def update
  origin_x = (@x + (@width / 2))
  origin_y = (@y + (@height / 2))

  points = [
    @top_left     = Vector.new(@x, @y),
    @top_right    = Vector.new(@x + @width, @y),
    @bottom_left  = Vector.new(@x, @y + @height),
    @bottom_right = Vector.new(@x + @width, @y + @height)
  ]

  [@top_left, @top_right, @bottom_left, @bottom_right].each do |vector|
    temp_x = vector.x - origin_x
    temp_y = vector.y - origin_y

    # 90 is up here, while gosu uses 0 for up.
    radians = (@angle + 90).gosu_to_radians
    vector.x = (@x + (@width / 2))  + ((temp_x * Math.cos(radians)) - (temp_y * Math.sin(radians)))
    vector.y = (@y + (@height / 2)) + ((temp_x * Math.sin(radians)) + (temp_y * Math.cos(radians)))
  end

  # [
  #   [:top,    @top_left, @top_right],
  #   [:right,  @top_right, @bottom_right],
  #   [:bottom, @bottom_right, @bottom_left],
  #   [:left,   @bottom_left, @top_left]
  # ].each do |edge|
  #   points.each do |point|
  #     puts "#{edge.first} -> #{shortest_distance(point, edge[1], edge[2])}"
  #   end
  # end
end