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 = 0.75
 17SPRITE_SCALING_COIN = 0.3
 18COIN_COUNT = 50
 19
 20WINDOW_WIDTH = 1280
 21WINDOW_HEIGHT = 720
 22WINDOW_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, delta_time: float = 1 / 60):
 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 > WINDOW_WIDTH:
 45            self.change_x *= -1
 46
 47        if self.bottom < 0:
 48            self.change_y *= -1
 49
 50        if self.top > WINDOW_HEIGHT:
 51            self.change_y *= -1
 52
 53
 54class GameView(arcade.View):
 55
 56    def __init__(self):
 57        """ Initializer """
 58        # Call the parent class initializer
 59        super().__init__()
 60
 61        # Variables that will hold sprite lists
 62        self.all_sprites_list = None
 63        self.coin_list = None
 64
 65        # Set up the player info
 66        self.player_sprite = None
 67        self.score = 0
 68
 69        # Don't show the mouse cursor
 70        self.window.set_mouse_visible(False)
 71
 72        self.background_color = arcade.color.AMAZON
 73
 74    def setup(self):
 75        """ Set up the game and initialize the variables. """
 76
 77        # Sprite lists
 78        self.all_sprites_list = arcade.SpriteList()
 79        self.coin_list = arcade.SpriteList()
 80
 81        # Score
 82        self.score = 0
 83
 84        # Set up the player
 85        # Character image from kenney.nl
 86        self.player_sprite = arcade.Sprite(
 87            ":resources:images/animated_characters/female_person/femalePerson_idle.png",
 88            scale=SPRITE_SCALING_PLAYER,
 89        )
 90        self.player_sprite.center_x = 50
 91        self.player_sprite.center_y = 50
 92        self.all_sprites_list.append(self.player_sprite)
 93
 94        # Create the coins
 95        for i in range(50):
 96
 97            # Create the coin instance
 98            # Coin image from kenney.nl
 99            coin = Coin(":resources:images/items/coinGold.png", scale=SPRITE_SCALING_COIN)
100
101            # Position the coin
102            coin.center_x = random.randrange(WINDOW_WIDTH)
103            coin.center_y = random.randrange(WINDOW_HEIGHT)
104            coin.change_x = random.randrange(-3, 4)
105            coin.change_y = random.randrange(-3, 4)
106
107            # Add the coin to the lists
108            self.all_sprites_list.append(coin)
109            self.coin_list.append(coin)
110
111    def on_draw(self):
112        """ Draw everything """
113        self.clear()
114        self.all_sprites_list.draw()
115
116        # Put the text on the screen.
117        output = f"Score: {self.score}"
118        arcade.draw_text(output, 10, 20, arcade.color.WHITE, 14)
119
120    def on_mouse_motion(self, x, y, dx, dy):
121        """ Handle Mouse Motion """
122
123        # Move the center of the player sprite to match the mouse x, y
124        self.player_sprite.center_x = x
125        self.player_sprite.center_y = y
126
127    def on_update(self, delta_time):
128        """ Movement and game logic """
129
130        # Call update on all sprites (The sprites don't do much in this
131        # example though.)
132        self.all_sprites_list.update(delta_time)
133
134        # Generate a list of all sprites that collided with the player.
135        hit_list = arcade.check_for_collision_with_list(self.player_sprite,
136                                                        self.coin_list)
137
138        # Loop through each colliding sprite, remove it, and add to the score.
139        for coin in hit_list:
140            coin.remove_from_sprite_lists()
141            self.score += 1
142
143
144def main():
145    """ Main function """
146    # Create a window class. This is what actually shows up on screen
147    window = arcade.Window(WINDOW_WIDTH, WINDOW_HEIGHT, WINDOW_TITLE)
148
149    # Create and setup the GameView
150    game = GameView()
151    game.setup()
152
153    # Show GameView on screen
154    window.show_view(game)
155
156    # Start the arcade game loop
157    arcade.run()
158
159
160if __name__ == "__main__":
161    main()