# Using a Background Image¶

sprite_collect_coins_background.py
  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 """ Sprite Collect Coins Simple program to show basic sprite usage. Artwork from http://kenney.nl If Python and Arcade are installed, this example can be run from the command line with: python -m arcade.examples.sprite_collect_coins_background """ import random import arcade import os SPRITE_SCALING = 0.5 SCREEN_WIDTH = 1024 SCREEN_HEIGHT = 600 class MyGame(arcade.Window): """ Main application class. """ def __init__(self, width, height): """ Initializer """ # Call the parent class initializer super().__init__(width, height) # Set the working directory (where we expect to find files) to the same # directory this .py file is in. You can leave this out of your own # code, but it is needed to easily run the examples using "python -m" # as mentioned at the top of this program. file_path = os.path.dirname(os.path.abspath(__file__)) os.chdir(file_path) # Background image will be stored in this variable self.background = None # Variables that will hold sprite lists self.player_list = None self.coin_list = None # Set up the player info self.player_sprite = None self.score = 0 self.score_text = None # Don't show the mouse cursor self.set_mouse_visible(False) # Set the background color arcade.set_background_color(arcade.color.AMAZON) def setup(self): """ Set up the game and initialize the variables. """ # Load the background image. Do this in the setup so we don't keep reloading it all the time. # Image from: # http://wallpaper-gallery.net/single/free-background-images/free-background-images-22.html self.background = arcade.load_texture("images/background.jpg") # Sprite lists self.player_list = arcade.SpriteList() self.coin_list = arcade.SpriteList() # Set up the player self.score = 0 self.player_sprite = arcade.Sprite("images/character.png", SPRITE_SCALING) self.player_sprite.center_x = 50 self.player_sprite.center_y = 50 self.player_list.append(self.player_sprite) for i in range(50): # Create the coin instance coin = arcade.Sprite("images/coin_01.png", SPRITE_SCALING / 3) # Position the coin coin.center_x = random.randrange(SCREEN_WIDTH) coin.center_y = random.randrange(SCREEN_HEIGHT) # Add the coin to the lists self.coin_list.append(coin) def on_draw(self): """ Render the screen. """ # This command has to happen before we start drawing arcade.start_render() # Draw the background texture arcade.draw_texture_rectangle(SCREEN_WIDTH // 2, SCREEN_HEIGHT // 2, SCREEN_WIDTH, SCREEN_HEIGHT, self.background) # Draw all the sprites. self.coin_list.draw() self.player_list.draw() # Render the text arcade.draw_text(f"Score: {self.score}", 10, 20, arcade.color.WHITE, 14) def on_mouse_motion(self, x, y, dx, dy): """ Called whenever the mouse moves. """ self.player_sprite.center_x = x self.player_sprite.center_y = y def update(self, delta_time): """ Movement and game logic """ # Call update on the coin sprites (The sprites don't do much in this # example though.) self.coin_list.update() # Generate a list of all sprites that collided with the player. hit_list = arcade.check_for_collision_with_list(self.player_sprite, self.coin_list) # Loop through each colliding sprite, remove it, and add to the score. for coin in hit_list: coin.kill() self.score += 1 def main(): """ Main method """ window = MyGame(SCREEN_WIDTH, SCREEN_HEIGHT) window.setup() arcade.run() if __name__ == "__main__": main()