Change coins#
sprite_change_coins.py#
1"""
2Sprite Change Coins
3
4This shows how you can change a sprite once it is hit, rather than eliminate it.
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_change_coins
10"""
11
12from __future__ import annotations
13
14import random
15import arcade
16
17SPRITE_SCALING = 1
18
19SCREEN_WIDTH = 800
20SCREEN_HEIGHT = 600
21SCREEN_TITLE = "Sprite Change Coins"
22
23
24class Collectable(arcade.Sprite):
25 """ This class represents something the player collects. """
26
27 def __init__(self, filename, scale):
28 super().__init__(filename, scale=scale)
29 # Flip this once the coin has been collected.
30 self.changed = False
31
32
33class MyGame(arcade.Window):
34 """
35 Main application class.a
36 """
37
38 def __init__(self, width, height, title):
39 super().__init__(width, height, title)
40
41 # Sprite lists
42 self.player_list = None
43 self.coin_list = None
44
45 # Set up the player
46 self.score = 0
47 self.player_sprite = None
48
49 def setup(self):
50 """ Set up the game and initialize the variables. """
51
52 # Sprite lists
53 self.player_list = arcade.SpriteList()
54 self.coin_list = arcade.SpriteList()
55
56 # Set up the player
57 self.score = 0
58 self.player_sprite = arcade.Sprite(":resources:images/animated_characters/female_person/"
59 "femalePerson_idle.png", scale=0.5)
60 self.player_sprite.center_x = 50
61 self.player_sprite.center_y = 50
62 self.player_list.append(self.player_sprite)
63
64 for i in range(50):
65 # Create the coin instance
66 coin = Collectable(":resources:images/items/coinGold.png", scale=SPRITE_SCALING)
67 coin.width = 30
68 coin.height = 30
69
70 # Position the coin
71 coin.center_x = random.randrange(SCREEN_WIDTH)
72 coin.center_y = random.randrange(SCREEN_HEIGHT)
73
74 # Add the coin to the lists
75 self.coin_list.append(coin)
76
77 # Don't show the mouse cursor
78 self.set_mouse_visible(False)
79
80 # Set the background color
81 self.background_color = arcade.color.AMAZON
82
83 def on_draw(self):
84 """
85 Render the screen.
86 """
87
88 # This command has to happen before we start drawing
89 self.clear()
90
91 # Draw all the sprites.
92 self.coin_list.draw()
93 self.player_list.draw()
94
95 # Put the text on the screen.
96 output = f"Score: {self.score}"
97 arcade.draw_text(output, 10, 20, arcade.color.WHITE, 14)
98
99 def on_mouse_motion(self, x, y, dx, dy):
100 """
101 Called whenever the mouse moves.
102 """
103 self.player_sprite.center_x = x
104 self.player_sprite.center_y = y
105
106 def on_update(self, delta_time):
107 """ Movement and game logic """
108
109 # Call update on all sprites (The sprites don't do much in this
110 # example though.)
111 self.player_list.update()
112 self.coin_list.update()
113
114 # Generate a list of all sprites that collided with the player.
115 hit_list = arcade.check_for_collision_with_list(self.player_sprite, self.coin_list)
116
117 # Loop through each colliding sprite, change it, and add to the score.
118 for coin in hit_list:
119 # Have we collected this?
120 if not coin.changed:
121 # No? Then do so
122 coin.append_texture(arcade.load_texture(":resources:images/pinball/bumper.png"))
123 coin.set_texture(1)
124 coin.changed = True
125 coin.width = 30
126 coin.height = 30
127 self.score += 1
128
129
130def main():
131 """ Main function """
132 window = MyGame(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_TITLE)
133 window.setup()
134 arcade.run()
135
136
137if __name__ == "__main__":
138 main()