Collect Coins that are Bouncing#
sprite_collect_coins_move_bouncing.py#
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Sprite Collect Moving and Bouncing Coins
Simple program to show basic sprite usage.
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_collect_coins_move_bouncing
"""
import random
import arcade
# --- Constants ---
SPRITE_SCALING_PLAYER = 0.5
SPRITE_SCALING_COIN = 0.2
COIN_COUNT = 50
SCREEN_WIDTH = 800
SCREEN_HEIGHT = 600
SCREEN_TITLE = "Sprite Collect Moving and Bouncing Coins Example"
class Coin(arcade.Sprite):
def __init__(self, filename, sprite_scaling):
super().__init__(filename, sprite_scaling)
self.change_x = 0
self.change_y = 0
def update(self):
# Move the coin
self.center_x += self.change_x
self.center_y += self.change_y
# If we are out-of-bounds, then 'bounce'
if self.left < 0:
self.change_x *= -1
if self.right > SCREEN_WIDTH:
self.change_x *= -1
if self.bottom < 0:
self.change_y *= -1
if self.top > SCREEN_HEIGHT:
self.change_y *= -1
class MyGame(arcade.Window):
""" Our custom Window Class"""
def __init__(self):
""" Initializer """
# Call the parent class initializer
super().__init__(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_TITLE)
# Variables that will hold sprite lists
self.all_sprites_list = None
self.coin_list = None
# Set up the player info
self.player_sprite = None
self.score = 0
# Don't show the mouse cursor
self.set_mouse_visible(False)
arcade.set_background_color(arcade.color.AMAZON)
def setup(self):
""" Set up the game and initialize the variables. """
# Sprite lists
self.all_sprites_list = arcade.SpriteList()
self.coin_list = arcade.SpriteList()
# Score
self.score = 0
# Set up the player
# Character image from kenney.nl
self.player_sprite = arcade.Sprite(":resources:images/animated_characters/female_person/"
"femalePerson_idle.png", SPRITE_SCALING_PLAYER)
self.player_sprite.center_x = 50
self.player_sprite.center_y = 50
self.all_sprites_list.append(self.player_sprite)
# Create the coins
for i in range(50):
# Create the coin instance
# Coin image from kenney.nl
coin = Coin(":resources:images/items/coinGold.png", SPRITE_SCALING_COIN)
# Position the coin
coin.center_x = random.randrange(SCREEN_WIDTH)
coin.center_y = random.randrange(SCREEN_HEIGHT)
coin.change_x = random.randrange(-3, 4)
coin.change_y = random.randrange(-3, 4)
# Add the coin to the lists
self.all_sprites_list.append(coin)
self.coin_list.append(coin)
def on_draw(self):
""" Draw everything """
self.clear()
self.all_sprites_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):
""" Handle Mouse Motion """
# Move the center of the player sprite to match the mouse x, y
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.all_sprites_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.remove_from_sprite_lists()
self.score += 1
def main():
window = MyGame()
window.setup()
arcade.run()
if __name__ == "__main__":
main()
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