02_views.py Full Listing

02_views.py
  1import random
  2import arcade
  3
  4# --- Constants ---
  5SPRITE_SCALING_PLAYER = 0.5
  6SPRITE_SCALING_COIN = .25
  7COIN_COUNT = 25
  8
  9SCREEN_WIDTH = 800
 10SCREEN_HEIGHT = 600
 11SCREEN_TITLE = "Implement Views Example"
 12
 13
 14class GameView(arcade.View):
 15    """ Our custom Window Class"""
 16
 17    def __init__(self):
 18        """ Initializer """
 19        # Call the parent class initializer
 20        super().__init__()
 21
 22        # Variables that will hold sprite lists
 23        self.player_list = None
 24        self.coin_list = None
 25
 26        # Set up the player info
 27        self.player_sprite = None
 28        self.score_text = arcade.Text("Score: 0", 10, 10, arcade.color.WHITE, 14)
 29        self.score = 0
 30
 31        # Don't show the mouse cursor
 32        self.window.set_mouse_visible(False)
 33
 34        self.window.background_color = arcade.color.AMAZON
 35
 36    def setup(self):
 37        """ Set up the game and initialize the variables. """
 38
 39        # Sprite lists
 40        self.player_list = arcade.SpriteList()
 41        self.coin_list = arcade.SpriteList()
 42
 43        # Score
 44        self.score = 0
 45
 46        # Set up the player
 47        # Character image from kenney.nl
 48        self.player_sprite = arcade.Sprite(":resources:images/animated_characters/female_person/femalePerson_idle.png",
 49                                           SPRITE_SCALING_PLAYER)
 50        self.player_sprite.center_x = 50
 51        self.player_sprite.center_y = 50
 52        self.player_list.append(self.player_sprite)
 53
 54        # Create the coins
 55        for i in range(COIN_COUNT):
 56
 57            # Create the coin instance
 58            # Coin image from kenney.nl
 59            coin = arcade.Sprite(":resources:images/items/coinGold.png",
 60                                 SPRITE_SCALING_COIN)
 61
 62            # Position the coin
 63            coin.center_x = random.randrange(SCREEN_WIDTH)
 64            coin.center_y = random.randrange(SCREEN_HEIGHT)
 65
 66            # Add the coin to the lists
 67            self.coin_list.append(coin)
 68
 69    def on_draw(self):
 70        """ Draw everything """
 71        self.clear()
 72        self.coin_list.draw()
 73        self.player_list.draw()
 74
 75        # Put the text on the screen.
 76        output = f"Score: {self.score}"
 77        self.score_text.text = output
 78        self.score_text.draw()
 79
 80    def on_mouse_motion(self, x, y, dx, dy):
 81        """ Handle Mouse Motion """
 82
 83        # Move the center of the player sprite to match the mouse x, y
 84        self.player_sprite.center_x = x
 85        self.player_sprite.center_y = y
 86
 87    def on_update(self, delta_time):
 88        """ Movement and game logic """
 89
 90        # Call update on all sprites (The sprites don't do much in this
 91        # example though.)
 92        self.coin_list.update()
 93
 94        # Generate a list of all sprites that collided with the player.
 95        coins_hit_list = arcade.check_for_collision_with_list(self.player_sprite, self.coin_list)
 96
 97        # Loop through each colliding sprite, remove it, and add to the score.
 98        for coin in coins_hit_list:
 99            coin.remove_from_sprite_lists()
100            self.score += 1
101
102
103def main():
104    """ Main function """
105
106    window = arcade.Window(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_TITLE)
107    start_view = GameView()
108    window.show_view(start_view)
109    start_view.setup()
110    arcade.run()
111
112
113if __name__ == "__main__":
114    main()