# -*- coding: utf-8 -*-

class Missile < Actor
  #include Wireframe
  use_systems :steering, :animation, :interpolation
  collides_as :missile

  def initialize(opts={})
    super
    activate(:seek)
    @last_distance_to_target = nil
    @target = nil
    set_image('missile-med.png', opts)
    @z = ZOrder::Missile
    #build_wireframe Shape.points[:missile]
  end

  def save_init_pos
    @init_x = x
    @init_y = y
  end

  def align_to target
    to_target = target - pos
    self.heading = to_target.normalize!
  end

  def update
    @last_distance_to_target = distance_to_target if @target
    super
    # If missile goes past target or is 10 pixels away from it, just die
    if @target && (distance_to_target < 10 || !facing_target?)
      die
    end
  end

  def draw
    super
    color = @color.dup
    color.saturation = color.value = 0.3
    #$lotu.draw_line(@pos.x, @pos.y, color, @target.x, @target.y, color) if @target
    $lotu.draw_line(@pos.x, @pos.y, color, @init_x, @init_y, color) if @target
  end

  def collision_radius
    @width/2
  end

end