import
random
import
math
import
arcade
Width
=
800
Height
=
600
Title
=
"SnowFall"
class
snow_fall:
def
__init__(
self
):
self
.x
=
0
self
.y
=
0
def
reset_snow(
self
):
self
.y
=
random.randrange(Height, Height
+
100
)
self
.x
=
random.randrange(Width)
class
snowfall(arcade.Window):
def
__init__(
self
, width, height, title):
super
().__init__(width, height, title)
def
start_snowfall(
self
):
self
.snowfall_list
=
[]
for
i
in
range
(
50
):
snowfall
=
snow_fall()
snowfall.x
=
random.randrange(Width)
snowfall.y
=
random.randrange(Height
+
200
)
snowfall.size
=
random.randrange(
8
)
snowfall.speed
=
random.randrange(
20
,
40
)
snowfall.angle
=
random.uniform(math.pi, math.pi
*
2
)
self
.snowfall_list.append(snowfall)
arcade.set_background_color(arcade.color.BLUE)
def
on_draw(
self
):
arcade.start_render()
for
snowfall
in
self
.snowfall_list:
arcade.draw_circle_filled(snowfall.x, snowfall.y,
snowfall.size, arcade.color.WHITE)
def
on_update(
self
, delta_time):
for
snowfall
in
self
.snowfall_list:
snowfall.y
-
=
snowfall.speed
*
delta_time
if
snowfall.y <
0
:
snowfall.reset_snow()
snowfall.x
+
=
snowfall.speed
*
\
math.cos(snowfall.angle)
*
delta_time
snowfall.angle
+
=
1
*
delta_time
if
__name__
=
=
"__main__"
:
screen
=
snowfall(
800
,
600
,
"Snow"
)
screen.start_snowfall()
arcade.run()