03_views.py Full Listing

03_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 InstructionView(arcade.View):
 15    """ View to show instructions """
 16
 17    def on_show_view(self):
 18        """ This is run once when we switch to this view """
 19        self.window.background_color = arcade.csscolor.DARK_SLATE_BLUE
 20
 21        # Reset the viewport, necessary if we have a scrolling game and we need
 22        # to reset the viewport back to the start so we can see what we draw.
 23        self.window.default_camera.use()
 24
 25    def on_draw(self):
 26        """ Draw this view """
 27        self.clear()
 28        arcade.draw_text("Instructions Screen", self.window.width / 2, self.window.height / 2,
 29                         arcade.color.WHITE, font_size=50, anchor_x="center")
 30        arcade.draw_text("Click to advance", self.window.width / 2, self.window.height / 2-75,
 31                         arcade.color.WHITE, font_size=20, anchor_x="center")
 32
 33    def on_mouse_press(self, _x, _y, _button, _modifiers):
 34        """ If the user presses the mouse button, start the game. """
 35        game_view = GameView()
 36        game_view.setup()
 37        self.window.show_view(game_view)
 38
 39
 40class GameView(arcade.View):
 41    """ Our custom Window Class"""
 42
 43    def __init__(self):
 44        """ Initializer """
 45        # Call the parent class initializer
 46        super().__init__()
 47
 48        # Variables that will hold sprite lists
 49        self.player_list = None
 50        self.coin_list = None
 51
 52        # Set up the player info
 53        self.player_sprite = None
 54        self.score_text = arcade.Text("Score: 0", 10, 10, arcade.color.WHITE, 14)
 55        self.score = 0
 56
 57        # Don't show the mouse cursor
 58        self.window.set_mouse_visible(False)
 59
 60        self.window.background_color = arcade.color.AMAZON
 61
 62    def setup(self):
 63        """ Set up the game and initialize the variables. """
 64
 65        # Sprite lists
 66        self.player_list = arcade.SpriteList()
 67        self.coin_list = arcade.SpriteList()
 68
 69        # Score
 70        self.score = 0
 71
 72        # Set up the player
 73        # Character image from kenney.nl
 74        self.player_sprite = arcade.Sprite(":resources:images/animated_characters/female_person/femalePerson_idle.png",
 75                                           SPRITE_SCALING_PLAYER)
 76        self.player_sprite.center_x = 50
 77        self.player_sprite.center_y = 50
 78        self.player_list.append(self.player_sprite)
 79
 80        # Create the coins
 81        for i in range(COIN_COUNT):
 82
 83            # Create the coin instance
 84            # Coin image from kenney.nl
 85            coin = arcade.Sprite(":resources:images/items/coinGold.png",
 86                                 SPRITE_SCALING_COIN)
 87
 88            # Position the coin
 89            coin.center_x = random.randrange(SCREEN_WIDTH)
 90            coin.center_y = random.randrange(SCREEN_HEIGHT)
 91
 92            # Add the coin to the lists
 93            self.coin_list.append(coin)
 94
 95    def on_draw(self):
 96        """ Draw everything """
 97        self.clear()
 98        self.coin_list.draw()
 99        self.player_list.draw()
100
101        # Put the text on the screen.
102        output = f"Score: {self.score}"
103        self.score_text.text = output
104        self.score_text.draw()
105
106
107    def on_mouse_motion(self, x, y, dx, dy):
108        """ Handle Mouse Motion """
109
110        # Move the center of the player sprite to match the mouse x, y
111        self.player_sprite.center_x = x
112        self.player_sprite.center_y = y
113
114    def on_update(self, delta_time):
115        """ Movement and game logic """
116
117        # Call update on all sprites (The sprites don't do much in this
118        # example though.)
119        self.coin_list.update()
120
121        # Generate a list of all sprites that collided with the player.
122        coins_hit_list = arcade.check_for_collision_with_list(self.player_sprite, self.coin_list)
123
124        # Loop through each colliding sprite, remove it, and add to the score.
125        for coin in coins_hit_list:
126            coin.remove_from_sprite_lists()
127            self.score += 1
128
129
130def main():
131    """ Main function """
132
133    window = arcade.Window(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_TITLE)
134    start_view = InstructionView()
135    window.show_view(start_view)
136    arcade.run()
137
138
139if __name__ == "__main__":
140    main()