Collect Coins that are Bouncing

Screenshot of using sprites to collect coins
sprite_collect_coins_move_bouncing.py
  1"""
  2Sprite Collect Moving and Bouncing Coins
  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_bouncing
 10"""
 11
 12import random
 13import arcade
 14
 15# --- Constants ---
 16SPRITE_SCALING_PLAYER = 0.5
 17SPRITE_SCALING_COIN = 0.2
 18COIN_COUNT = 50
 19
 20SCREEN_WIDTH = 800
 21SCREEN_HEIGHT = 600
 22SCREEN_TITLE = "Sprite Collect Moving and Bouncing Coins Example"
 23
 24
 25class Coin(arcade.Sprite):
 26
 27    def __init__(self, filename, scale):
 28
 29        super().__init__(filename, scale=scale)
 30
 31        self.change_x = 0
 32        self.change_y = 0
 33
 34    def update(self):
 35
 36        # Move the coin
 37        self.center_x += self.change_x
 38        self.center_y += self.change_y
 39
 40        # If we are out-of-bounds, then 'bounce'
 41        if self.left < 0:
 42            self.change_x *= -1
 43
 44        if self.right > SCREEN_WIDTH:
 45            self.change_x *= -1
 46
 47        if self.bottom < 0:
 48            self.change_y *= -1
 49
 50        if self.top > SCREEN_HEIGHT:
 51            self.change_y *= -1
 52
 53
 54class MyGame(arcade.Window):
 55    """ Our custom Window Class"""
 56
 57    def __init__(self):
 58        """ Initializer """
 59        # Call the parent class initializer
 60        super().__init__(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_TITLE)
 61
 62        # Variables that will hold sprite lists
 63        self.all_sprites_list = None
 64        self.coin_list = None
 65
 66        # Set up the player info
 67        self.player_sprite = None
 68        self.score = 0
 69
 70        # Don't show the mouse cursor
 71        self.set_mouse_visible(False)
 72
 73        self.background_color = arcade.color.AMAZON
 74
 75    def setup(self):
 76        """ Set up the game and initialize the variables. """
 77
 78        # Sprite lists
 79        self.all_sprites_list = arcade.SpriteList()
 80        self.coin_list = arcade.SpriteList()
 81
 82        # Score
 83        self.score = 0
 84
 85        # Set up the player
 86        # Character image from kenney.nl
 87        self.player_sprite = arcade.Sprite(
 88            ":resources:images/animated_characters/female_person/femalePerson_idle.png",
 89            scale=SPRITE_SCALING_PLAYER,
 90        )
 91        self.player_sprite.center_x = 50
 92        self.player_sprite.center_y = 50
 93        self.all_sprites_list.append(self.player_sprite)
 94
 95        # Create the coins
 96        for i in range(50):
 97
 98            # Create the coin instance
 99            # Coin image from kenney.nl
100            coin = Coin(":resources:images/items/coinGold.png", scale=SPRITE_SCALING_COIN)
101
102            # Position the coin
103            coin.center_x = random.randrange(SCREEN_WIDTH)
104            coin.center_y = random.randrange(SCREEN_HEIGHT)
105            coin.change_x = random.randrange(-3, 4)
106            coin.change_y = random.randrange(-3, 4)
107
108            # Add the coin to the lists
109            self.all_sprites_list.append(coin)
110            self.coin_list.append(coin)
111
112    def on_draw(self):
113        """ Draw everything """
114        self.clear()
115        self.all_sprites_list.draw()
116
117        # Put the text on the screen.
118        output = f"Score: {self.score}"
119        arcade.draw_text(output, 10, 20, arcade.color.WHITE, 14)
120
121    def on_mouse_motion(self, x, y, dx, dy):
122        """ Handle Mouse Motion """
123
124        # Move the center of the player sprite to match the mouse x, y
125        self.player_sprite.center_x = x
126        self.player_sprite.center_y = y
127
128    def on_update(self, delta_time):
129        """ Movement and game logic """
130
131        # Call update on all sprites (The sprites don't do much in this
132        # example though.)
133        self.all_sprites_list.update()
134
135        # Generate a list of all sprites that collided with the player.
136        hit_list = arcade.check_for_collision_with_list(self.player_sprite,
137                                                        self.coin_list)
138
139        # Loop through each colliding sprite, remove it, and add to the score.
140        for coin in hit_list:
141            coin.remove_from_sprite_lists()
142            self.score += 1
143
144
145def main():
146    window = MyGame()
147    window.setup()
148    arcade.run()
149
150
151if __name__ == "__main__":
152    main()