Collect Coins Moving Down

For a complete explanation, see:

Screenshot of using sprites to collect coins
sprite_collect_coins_move_down.py
  1"""
  2Sprite Collect Coins Moving Down
  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_down
 10"""
 11
 12import random
 13import arcade
 14import os
 15
 16# --- Constants ---
 17SPRITE_SCALING_PLAYER = 0.5
 18SPRITE_SCALING_COIN = 0.2
 19COIN_COUNT = 50
 20
 21SCREEN_WIDTH = 800
 22SCREEN_HEIGHT = 600
 23SCREEN_TITLE = "Sprite Collect Coins Moving Down Example"
 24
 25
 26class Coin(arcade.Sprite):
 27    """
 28    This class represents the coins on our screen. It is a child class of
 29    the arcade library's "Sprite" class.
 30    """
 31
 32    def reset_pos(self):
 33
 34        # Reset the coin to a random spot above the screen
 35        self.center_y = random.randrange(SCREEN_HEIGHT + 20,
 36                                         SCREEN_HEIGHT + 100)
 37        self.center_x = random.randrange(SCREEN_WIDTH)
 38
 39    def update(self):
 40
 41        # Move the coin
 42        self.center_y -= 1
 43
 44        # See if the coin has fallen off the bottom of the screen.
 45        # If so, reset it.
 46        if self.top < 0:
 47            self.reset_pos()
 48
 49
 50class MyGame(arcade.Window):
 51    """ Our custom Window Class"""
 52
 53    def __init__(self):
 54        """ Initializer """
 55
 56        # Call the parent class initializer
 57        super().__init__(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_TITLE)
 58
 59        # Set the working directory (where we expect to find files) to the same
 60        # directory this .py file is in. You can leave this out of your own
 61        # code, but it is needed to easily run the examples using "python -m"
 62        # as mentioned at the top of this program.
 63        file_path = os.path.dirname(os.path.abspath(__file__))
 64        os.chdir(file_path)
 65
 66        # Variables that will hold sprite lists
 67        self.player_sprite_list = None
 68        self.coin_sprite_list = None
 69
 70        # Set up the player info
 71        self.player_sprite = None
 72        self.score = 0
 73
 74        # Don't show the mouse cursor
 75        self.set_mouse_visible(False)
 76
 77        arcade.set_background_color(arcade.color.AMAZON)
 78
 79    def setup(self):
 80        """ Set up the game and initialize the variables. """
 81
 82        # Sprite lists
 83        self.player_sprite_list = arcade.SpriteList()
 84        self.coin_sprite_list = arcade.SpriteList()
 85
 86        # Score
 87        self.score = 0
 88
 89        # Set up the player
 90        # Character image from kenney.nl
 91        self.player_sprite = arcade.Sprite(":resources:images/animated_characters/female_person/femalePerson_idle.png", SPRITE_SCALING_PLAYER)
 92        self.player_sprite.center_x = 50
 93        self.player_sprite.center_y = 50
 94        self.player_sprite_list.append(self.player_sprite)
 95
 96        # Create the coins
 97        for i in range(COIN_COUNT):
 98
 99            # Create the coin instance
100            # Coin image from kenney.nl
101            coin = Coin(":resources:images/items/coinGold.png", SPRITE_SCALING_COIN)
102
103            # Position the coin
104            coin.center_x = random.randrange(SCREEN_WIDTH)
105            coin.center_y = random.randrange(SCREEN_HEIGHT)
106
107            # Add the coin to the lists
108            self.coin_sprite_list.append(coin)
109
110    def on_draw(self):
111        """ Draw everything """
112        arcade.start_render()
113        self.coin_sprite_list.draw()
114        self.player_sprite_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.coin_sprite_list.update()
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_sprite_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    window = MyGame()
146    window.setup()
147    arcade.run()
148
149
150if __name__ == "__main__":
151    main()