1"""
2Sound Speed Demo
3
4If Python and Arcade are installed, this example can be run from the
5command line with:
6python -m arcade.examples.sound_speed_demo
7
8Left click a button to play a sound.
9
10Each button plays the same sound sample in a slightly different way.
11
12The middle buttons play at normal speed. The ones to the left play
13slower, and the ones to the right play faster. The buttons higher on
14the screen are quieter, while the ones further down are louder.
15"""
16
17from __future__ import annotations
18
19import typing
20
21import arcade
22
23
24SCREEN_WIDTH = 800
25SCREEN_HEIGHT = 600
26SCREEN_TITLE = "Sound Speed Demo"
27BUTTON_SIZE = 30
28
29
30SPEED_VARIATION = [0.1, 0.5, 1.0, 2.0, 4.0]
31BUTTON_X_POSITIONS = [
32 BUTTON_SIZE,
33 SCREEN_WIDTH / 4,
34 SCREEN_WIDTH / 2,
35 SCREEN_WIDTH / 4 * 3,
36 SCREEN_WIDTH - BUTTON_SIZE,
37]
38
39
40VOLUME_VARIATION = [0.1, 0.5, 1]
41Y_OFFSETS = [50, 0, -50]
42
43
44class SoundButton(arcade.SpriteSolidColor):
45 """
46 A sprite that stores settings about how to play a sound.
47
48 You can tell it to play a sound faster or slower, as well as adjust
49 the volume of the sound.
50 """
51
52 def __init__(self, sound_file, speed, volume, center_x, center_y):
53 super().__init__(BUTTON_SIZE, BUTTON_SIZE, color=arcade.color.WHITE)
54 self.sound = arcade.Sound(sound_file)
55 self.speed = speed
56 self.volume = volume
57 self.center_x = center_x
58 self.center_y = center_y
59
60 def play(self):
61 self.sound.play(speed=self.speed, volume=self.volume)
62
63
64class MyGame(arcade.Window):
65 def __init__(self, width, height, title):
66 super().__init__(width, height, title)
67
68 self.background_color = arcade.color.AMAZON
69 self.button_sprites = None
70
71 def setup(self):
72 self.button_sprites = arcade.SpriteList()
73
74 # Position the grid of buttons
75 # The zip function takes pieces from iterables and returns them
76 # as tuples. For more information, you can see the python doc:
77 # https://docs.python.org/3/library/functions.html#zip
78 for vol, y_offset in zip(VOLUME_VARIATION, Y_OFFSETS):
79 for speed, x_pos in zip(SPEED_VARIATION, BUTTON_X_POSITIONS):
80 self.button_sprites.append(
81 SoundButton(
82 ":resources:sounds/gameover3.wav",
83 speed,
84 vol,
85 x_pos,
86 SCREEN_HEIGHT / 2 + y_offset,
87 )
88 )
89
90 def on_draw(self):
91 self.clear()
92 self.button_sprites.draw()
93
94 def on_update(self, delta_time):
95 self.button_sprites.update()
96
97 def on_mouse_press(self, x, y, button, key_modifiers):
98 hit_sprites = arcade.get_sprites_at_point((x, y), self.button_sprites)
99 for sprite in hit_sprites:
100 button_sprite = typing.cast(SoundButton, sprite)
101 if button == arcade.MOUSE_BUTTON_LEFT:
102 button_sprite.play()
103
104
105def main():
106 game = MyGame(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_TITLE)
107 game.setup()
108 arcade.run()
109
110
111if __name__ == "__main__":
112 main()