Collect Coins that are Moving in a Circle

Screenshot of using sprites to collect coins
sprite_collect_coins_move_circle.py
  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
 12import random
 13import arcade
 14import math
 15
 16SPRITE_SCALING = 1.0
 17
 18WINDOW_WIDTH = 1280
 19WINDOW_HEIGHT = 720
 20WINDOW_TITLE = "Sprite Collect Coins Moving in Circles Example"
 21
 22
 23class Coin(arcade.Sprite):
 24
 25    def __init__(self, filename, scale):
 26        """ Constructor. """
 27        # Call the parent class (Sprite) constructor
 28        super().__init__(filename, scale=scale)
 29
 30        # Current angle in radians
 31        self.circle_angle = 0
 32
 33        # How far away from the center to orbit, in pixels
 34        self.circle_radius = 0
 35
 36        # How fast to orbit, in radians per frame
 37        self.circle_speed = 0.008
 38
 39        # Set the center of the point we will orbit around
 40        self.circle_center_x = 0
 41        self.circle_center_y = 0
 42
 43    def update(self, delta_time: float = 1/60):
 44        """ Update the ball's position. """
 45        # Calculate a new x, y
 46        self.center_x = self.circle_radius * math.sin(self.circle_angle) \
 47            + self.circle_center_x
 48        self.center_y = self.circle_radius * math.cos(self.circle_angle) \
 49            + self.circle_center_y
 50
 51        # Increase the angle in prep for the next round.
 52        self.circle_angle += self.circle_speed
 53
 54
 55class GameView(arcade.View):
 56    """ Main application class. """
 57
 58    def __init__(self):
 59
 60        super().__init__()
 61
 62        # Sprite lists
 63        self.all_sprites_list = None
 64        self.coin_list = None
 65
 66        # Set up the player
 67        self.score = 0
 68        self.player_sprite = None
 69
 70    def setup(self):
 71        """ Set up the game and initialize the variables. """
 72
 73        # Sprite lists
 74        self.all_sprites_list = arcade.SpriteList()
 75        self.coin_list = arcade.SpriteList()
 76
 77        # Set up the player
 78        self.score = 0
 79        # Character image from kenney.nl
 80        self.player_sprite = arcade.Sprite(
 81            ":resources:images/animated_characters/female_person/femalePerson_idle.png",
 82            scale=SPRITE_SCALING
 83        )
 84        self.player_sprite.center_x = 50
 85        self.player_sprite.center_y = 70
 86        self.all_sprites_list.append(self.player_sprite)
 87
 88        for i in range(50):
 89
 90            # Create the coin instance
 91            # Coin image from kenney.nl
 92            coin = Coin(":resources:images/items/coinGold.png", scale=SPRITE_SCALING / 3)
 93
 94            # Position the center of the circle the coin will orbit
 95            coin.circle_center_x = random.randrange(WINDOW_WIDTH)
 96            coin.circle_center_y = random.randrange(WINDOW_HEIGHT)
 97
 98            # Random radius from 10 to 200
 99            coin.circle_radius = random.randrange(10, 200)
100
101            # Random start angle from 0 to 2pi
102            coin.circle_angle = random.random() * 2 * math.pi
103
104            # Add the coin to the lists
105            self.all_sprites_list.append(coin)
106            self.coin_list.append(coin)
107
108        # Don't show the mouse cursor
109        self.window.set_mouse_visible(False)
110
111        # Set the background color
112        self.background_color = arcade.color.AMAZON
113
114    def on_draw(self):
115
116        # This command has to happen before we start drawing
117        self.clear()
118
119        # Draw all the sprites.
120        self.all_sprites_list.draw()
121
122        # Put the text on the screen.
123        output = "Score: " + str(self.score)
124        arcade.draw_text(output, 10, 20, arcade.color.WHITE, 14)
125
126    def on_mouse_motion(self, x, y, dx, dy):
127        self.player_sprite.center_x = x
128        self.player_sprite.center_y = y
129
130    def on_update(self, delta_time):
131        """ Movement and game logic """
132
133        # Call update on all sprites (The sprites don't do much in this
134        # example though.)
135        self.all_sprites_list.update(delta_time)
136
137        # Generate a list of all sprites that collided with the player.
138        hit_list = arcade.check_for_collision_with_list(self.player_sprite,
139                                                        self.coin_list)
140
141        # Loop through each colliding sprite, remove it, and add to the score.
142        for coin in hit_list:
143            self.score += 1
144            coin.remove_from_sprite_lists()
145
146
147def main():
148    """ Main function """
149    # Create a window class. This is what actually shows up on screen
150    window = arcade.Window(WINDOW_WIDTH, WINDOW_HEIGHT, WINDOW_TITLE)
151
152    # Create and setup the GameView
153    game = GameView()
154    game.setup()
155
156    # Show GameView on screen
157    window.show_view(game)
158
159    # Start the arcade game loop
160    arcade.run()
161
162
163if __name__ == "__main__":
164    main()