1"""
2Sprite Collect Coins Moving in Circles
3
4Simple program to show basic sprite usage.
5
6Artwork from http://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
12import random
13import arcade
14import math
15import os
16
17SPRITE_SCALING = 0.5
18
19SCREEN_WIDTH = 800
20SCREEN_HEIGHT = 600
21SCREEN_TITLE = "Sprite Collect Coins Moving in Circles Example"
22
23
24class Coin(arcade.Sprite):
25
26 def __init__(self, filename, sprite_scaling):
27 """ Constructor. """
28 # Call the parent class (Sprite) constructor
29 super().__init__(filename, sprite_scaling)
30
31 # Current angle in radians
32 self.circle_angle = 0
33
34 # How far away from the center to orbit, in pixels
35 self.circle_radius = 0
36
37 # How fast to orbit, in radians per frame
38 self.circle_speed = 0.008
39
40 # Set the center of the point we will orbit around
41 self.circle_center_x = 0
42 self.circle_center_y = 0
43
44 def update(self):
45
46 """ Update the ball's position. """
47 # Calculate a new x, y
48 self.center_x = self.circle_radius * math.sin(self.circle_angle) \
49 + self.circle_center_x
50 self.center_y = self.circle_radius * math.cos(self.circle_angle) \
51 + self.circle_center_y
52
53 # Increase the angle in prep for the next round.
54 self.circle_angle += self.circle_speed
55
56
57class MyGame(arcade.Window):
58 """ Main application class. """
59
60 def __init__(self, width, height, title):
61
62 super().__init__(width, height, title)
63
64 # Set the working directory (where we expect to find files) to the same
65 # directory this .py file is in. You can leave this out of your own
66 # code, but it is needed to easily run the examples using "python -m"
67 # as mentioned at the top of this program.
68 file_path = os.path.dirname(os.path.abspath(__file__))
69 os.chdir(file_path)
70
71 # Sprite lists
72 self.all_sprites_list = None
73 self.coin_list = None
74
75 # Set up the player
76 self.score = 0
77 self.player_sprite = None
78
79 def start_new_game(self):
80 """ Set up the game and initialize the variables. """
81
82 # Sprite lists
83 self.all_sprites_list = arcade.SpriteList()
84 self.coin_list = arcade.SpriteList()
85
86 # Set up the player
87 self.score = 0
88 # Character image from kenney.nl
89 self.player_sprite = arcade.Sprite(":resources:images/animated_characters/female_person/femalePerson_idle.png", SPRITE_SCALING)
90 self.player_sprite.center_x = 50
91 self.player_sprite.center_y = 70
92 self.all_sprites_list.append(self.player_sprite)
93
94 for i in range(50):
95
96 # Create the coin instance
97 # Coin image from kenney.nl
98 coin = Coin(":resources:images/items/coinGold.png", SPRITE_SCALING / 3)
99
100 # Position the center of the circle the coin will orbit
101 coin.circle_center_x = random.randrange(SCREEN_WIDTH)
102 coin.circle_center_y = random.randrange(SCREEN_HEIGHT)
103
104 # Random radius from 10 to 200
105 coin.circle_radius = random.randrange(10, 200)
106
107 # Random start angle from 0 to 2pi
108 coin.circle_angle = random.random() * 2 * math.pi
109
110 # Add the coin to the lists
111 self.all_sprites_list.append(coin)
112 self.coin_list.append(coin)
113
114 # Don't show the mouse cursor
115 self.set_mouse_visible(False)
116
117 # Set the background color
118 arcade.set_background_color(arcade.color.AMAZON)
119
120 def on_draw(self):
121
122 # This command has to happen before we start drawing
123 arcade.start_render()
124
125 # Draw all the sprites.
126 self.all_sprites_list.draw()
127
128 # Put the text on the screen.
129 output = "Score: " + str(self.score)
130 arcade.draw_text(output, 10, 20, arcade.color.WHITE, 14)
131
132 def on_mouse_motion(self, x, y, dx, dy):
133 self.player_sprite.center_x = x
134 self.player_sprite.center_y = y
135
136 def on_update(self, delta_time):
137 """ Movement and game logic """
138
139 # Call update on all sprites (The sprites don't do much in this
140 # example though.)
141 self.all_sprites_list.update()
142
143 # Generate a list of all sprites that collided with the player.
144 hit_list = arcade.check_for_collision_with_list(self.player_sprite,
145 self.coin_list)
146
147 # Loop through each colliding sprite, remove it, and add to the score.
148 for coin in hit_list:
149 self.score += 1
150 coin.remove_from_sprite_lists()
151
152
153def main():
154 window = MyGame(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_TITLE)
155 window.start_new_game()
156 arcade.run()
157
158
159if __name__ == "__main__":
160 main()