1"""
2Sprite Collect Coins Moving in Circles
3
4Simple program to show basic sprite usage.
5
6Artwork from https://kenney.nl
7
8If Python and Arcade are installed, this example can be run from the command line with:
9python -m arcade.examples.sprite_collect_coins_move_circle
10"""
11
12from __future__ import annotations
13
14import random
15import arcade
16import math
17
18SPRITE_SCALING = 0.5
19
20SCREEN_WIDTH = 800
21SCREEN_HEIGHT = 600
22SCREEN_TITLE = "Sprite Collect Coins Moving in Circles Example"
23
24
25class Coin(arcade.Sprite):
26
27 def __init__(self, filename, scale):
28 """ Constructor. """
29 # Call the parent class (Sprite) constructor
30 super().__init__(filename, scale=scale)
31
32 # Current angle in radians
33 self.circle_angle = 0
34
35 # How far away from the center to orbit, in pixels
36 self.circle_radius = 0
37
38 # How fast to orbit, in radians per frame
39 self.circle_speed = 0.008
40
41 # Set the center of the point we will orbit around
42 self.circle_center_x = 0
43 self.circle_center_y = 0
44
45 def update(self):
46
47 """ Update the ball's position. """
48 # Calculate a new x, y
49 self.center_x = self.circle_radius * math.sin(self.circle_angle) \
50 + self.circle_center_x
51 self.center_y = self.circle_radius * math.cos(self.circle_angle) \
52 + self.circle_center_y
53
54 # Increase the angle in prep for the next round.
55 self.circle_angle += self.circle_speed
56
57
58class MyGame(arcade.Window):
59 """ Main application class. """
60
61 def __init__(self, width, height, title):
62
63 super().__init__(width, height, title)
64
65 # Sprite lists
66 self.all_sprites_list = None
67 self.coin_list = None
68
69 # Set up the player
70 self.score = 0
71 self.player_sprite = None
72
73 def start_new_game(self):
74 """ Set up the game and initialize the variables. """
75
76 # Sprite lists
77 self.all_sprites_list = arcade.SpriteList()
78 self.coin_list = arcade.SpriteList()
79
80 # Set up the player
81 self.score = 0
82 # Character image from kenney.nl
83 self.player_sprite = arcade.Sprite(
84 ":resources:images/animated_characters/female_person/femalePerson_idle.png",
85 scale=SPRITE_SCALING
86 )
87 self.player_sprite.center_x = 50
88 self.player_sprite.center_y = 70
89 self.all_sprites_list.append(self.player_sprite)
90
91 for i in range(50):
92
93 # Create the coin instance
94 # Coin image from kenney.nl
95 coin = Coin(":resources:images/items/coinGold.png", scale=SPRITE_SCALING / 3)
96
97 # Position the center of the circle the coin will orbit
98 coin.circle_center_x = random.randrange(SCREEN_WIDTH)
99 coin.circle_center_y = random.randrange(SCREEN_HEIGHT)
100
101 # Random radius from 10 to 200
102 coin.circle_radius = random.randrange(10, 200)
103
104 # Random start angle from 0 to 2pi
105 coin.circle_angle = random.random() * 2 * math.pi
106
107 # Add the coin to the lists
108 self.all_sprites_list.append(coin)
109 self.coin_list.append(coin)
110
111 # Don't show the mouse cursor
112 self.set_mouse_visible(False)
113
114 # Set the background color
115 self.background_color = arcade.color.AMAZON
116
117 def on_draw(self):
118
119 # This command has to happen before we start drawing
120 self.clear()
121
122 # Draw all the sprites.
123 self.all_sprites_list.draw()
124
125 # Put the text on the screen.
126 output = "Score: " + str(self.score)
127 arcade.draw_text(output, 10, 20, arcade.color.WHITE, 14)
128
129 def on_mouse_motion(self, x, y, dx, dy):
130 self.player_sprite.center_x = x
131 self.player_sprite.center_y = y
132
133 def on_update(self, delta_time):
134 """ Movement and game logic """
135
136 # Call update on all sprites (The sprites don't do much in this
137 # example though.)
138 self.all_sprites_list.update()
139
140 # Generate a list of all sprites that collided with the player.
141 hit_list = arcade.check_for_collision_with_list(self.player_sprite,
142 self.coin_list)
143
144 # Loop through each colliding sprite, remove it, and add to the score.
145 for coin in hit_list:
146 self.score += 1
147 coin.remove_from_sprite_lists()
148
149
150def main():
151 window = MyGame(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_TITLE)
152 window.start_new_game()
153 arcade.run()
154
155
156if __name__ == "__main__":
157 main()