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144 | """
Sprite Change Coins
This shows how you can change a sprite once it is hit, rather than eliminate it.
Artwork from https://kenney.nl
If Python and Arcade are installed, this example can be run from the command line with:
python -m arcade.examples.sprite_change_coins
"""
import random
import arcade
import os
SPRITE_SCALING = 1
SCREEN_WIDTH = 800
SCREEN_HEIGHT = 600
SCREEN_TITLE = "Sprite Change Coins"
class Collectable(arcade.Sprite):
""" This class represents something the player collects. """
def __init__(self, filename, scale):
super().__init__(filename, scale)
# Flip this once the coin has been collected.
self.changed = False
class MyGame(arcade.Window):
"""
Main application class.a
"""
def __init__(self, width, height, title):
super().__init__(width, height, title)
# 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)
# Sprite lists
self.player_list = None
self.coin_list = None
# Set up the player
self.score = 0
self.player_sprite = None
def setup(self):
""" Set up the game and initialize the variables. """
# Sprite lists
self.player_list = arcade.SpriteList()
self.coin_list = arcade.SpriteList()
# Set up the player
self.score = 0
self.player_sprite = arcade.Sprite(":resources:images/animated_characters/female_person/"
"femalePerson_idle.png", 0.5)
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 = Collectable(":resources:images/items/coinGold.png", SPRITE_SCALING)
coin.width = 30
coin.height = 30
# 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)
# Don't show the mouse cursor
self.set_mouse_visible(False)
# Set the background color
arcade.set_background_color(arcade.color.AMAZON)
def on_draw(self):
"""
Render the screen.
"""
# This command has to happen before we start drawing
arcade.start_render()
# Draw all the sprites.
self.coin_list.draw()
self.player_list.draw()
# Put the text on the screen.
output = f"Score: {self.score}"
arcade.draw_text(output, 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 on_update(self, delta_time):
""" Movement and game logic """
# Call update on all sprites (The sprites don't do much in this
# example though.)
self.player_list.update()
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, change it, and add to the score.
for coin in hit_list:
# Have we collected this?
if not coin.changed:
# No? Then do so
coin.append_texture(arcade.load_texture(":resources:images/pinball/bumper.png"))
coin.set_texture(1)
coin.changed = True
coin.width = 30
coin.height = 30
self.score += 1
def main():
""" Main function """
window = MyGame(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_TITLE)
window.setup()
arcade.run()
if __name__ == "__main__":
main()
|