Class: TreeGraphics

Inherits:
Component show all
Defined in:
lib/entities/components/tree_graphics.rb

Constant Summary collapse

SHAKE_TIME = 
100
SHAKE_COOLDOWN = 
200
SHAKE_DISTANCE = 
[2, 1, 0, -1, -2, -1, 0, 1, 0, -1, 0]

Instance Attribute Summary

Attributes inherited from Component

#object

Instance Method Summary collapse

Methods inherited from Component

#update

Constructor Details

#initialize(object, seed) ⇒ TreeGraphics

Returns a new instance of TreeGraphics.



5
6
7
8
 
# File 'lib/entities/components/tree_graphics.rb', line 5

def initialize(object, seed)
  super(object)
  load_sprite(seed)
end

Instance Method Details

#adjust_shake(x, y, shaking_for) ⇒ Object 



19
20
21
22
23
24
 
# 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) ⇒ Object 



26
27
28
29
30
31
32
33
34
35
36
37
38
39
 
# 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 ⇒ Object 



41
42
43
 
# File 'lib/entities/components/tree_graphics.rb', line 41

def height
  @tree.height
end

#shake(direction) ⇒ Object 



10
11
12
13
14
15
16
17
 
# 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 ⇒ Object 



45
46
47
 
# File 'lib/entities/components/tree_graphics.rb', line 45

def width
  @tree.width
end