class TreeGraphics

Constants

SHAKE_COOLDOWN
SHAKE_DISTANCE
SHAKE_TIME

Public Class Methods

new(object, seed) click to toggle source
Calls superclass method Component::new
# File lib/entities/components/tree_graphics.rb, line 5
def initialize(object, seed)
  super(object)
  load_sprite(seed)
end

Public Instance Methods

adjust_shake(x, y, shaking_for) click to toggle source
# File lib/entities/components/tree_graphics.rb, line 19
def adjust_shake(x, y, shaking_for)
  elapsed = [shaking_for, SHAKE_TIME].min / SHAKE_TIME.to_f
  frame = ((SHAKE_DISTANCE.length - 1) * elapsed).floor
  distance = SHAKE_DISTANCE[frame]
  Utils.point_at_distance(x, y, @shake_direction, distance)
end
draw(viewport) click to toggle source
# File lib/entities/components/tree_graphics.rb, line 26
def draw(viewport)
  if @shaking
    shaking_for = Gosu.milliseconds - @shake_start
    shaking_x, shaking_y = adjust_shake(
      center_x, center_y, shaking_for)
    @tree.draw(shaking_x, shaking_y, 5)
    if shaking_for >= SHAKE_TIME
      @shaking = false
    end
  else
    @tree.draw(center_x, center_y, 5)
  end
  Utils.mark_corners(object.box) if $debug
end
height() click to toggle source
# File lib/entities/components/tree_graphics.rb, line 41
def height
  @tree.height
end
shake(direction) click to toggle source
# File lib/entities/components/tree_graphics.rb, line 10
def shake(direction)
  now = Gosu.milliseconds
  return if @shake_start &&
    now - @shake_start < SHAKE_TIME + SHAKE_COOLDOWN
  @shake_start = now
  @shake_direction = direction
  @shaking = true
end
width() click to toggle source
# File lib/entities/components/tree_graphics.rb, line 45
def width
  @tree.width
end

Private Instance Methods

center_x() click to toggle source
# File lib/entities/components/tree_graphics.rb, line 57
def center_x
  @center_x ||= x - @tree.width / 2
end
center_y() click to toggle source
# File lib/entities/components/tree_graphics.rb, line 61
def center_y
  @center_y ||= y - @tree.height / 2
end
load_sprite(seed) click to toggle source
# File lib/entities/components/tree_graphics.rb, line 51
def load_sprite(seed)
  frame_list = trees.frame_list
  frame = frame_list[(frame_list.size * seed).round]
  @tree = trees.frame(frame)
end
trees() click to toggle source
# File lib/entities/components/tree_graphics.rb, line 65
def trees
  @@trees ||= Gosu::TexturePacker.load_json($window,
    Utils.media_path('trees_packed.json'))
end