Using a Background Image¶
sprite_collect_coins_background.py¶
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Sprite Collect Coins
Simple program to show basic sprite usage.
Artwork from http://kenney.nl
"""
import random
import arcade
SPRITE_SCALING = 0.5
SCREEN_WIDTH = 1024
SCREEN_HEIGHT = 600
class MyApplication(arcade.Window):
"""
Main application class.
"""
def __init__(self, width, height):
"""
Initializer
:param width:
:param height:
"""
# Call the parent class initializer
super().__init__(width, height)
# Background image will be stored in this variable
self.background = None
# 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)
# Set the background color
arcade.set_background_color(arcade.color.AMAZON)
def setup(self):
""" Set up the game and initialize the variables. """
# Load the background image. Do this in the setup so we don't keep reloading it all the time.
# Image from:
# http://wallpaper-gallery.net/single/free-background-images/free-background-images-22.html
self.background = arcade.load_texture("images/background.jpg")
# Sprite lists
self.all_sprites_list = arcade.SpriteList()
self.coin_list = arcade.SpriteList()
# Set up the player
self.score = 0
self.player_sprite = arcade.Sprite("images/character.png",
SPRITE_SCALING)
self.player_sprite.center_x = 50
self.player_sprite.center_y = 50
self.all_sprites_list.append(self.player_sprite)
for i in range(50):
# Create the coin instance
coin = arcade.Sprite("images/coin_01.png", SPRITE_SCALING / 3)
# Position the coin
coin.center_x = random.randrange(SCREEN_WIDTH)
coin.center_y = random.randrange(SCREEN_HEIGHT)
# Add the coin to the lists
self.all_sprites_list.append(coin)
self.coin_list.append(coin)
def on_draw(self):
"""
Render the screen.
"""
# This command has to happen before we start drawing
arcade.start_render()
# Draw the background texture
arcade.draw_texture_rectangle(SCREEN_WIDTH // 2, SCREEN_HEIGHT // 2, SCREEN_WIDTH, SCREEN_HEIGHT, self.background)
# Draw all the sprites.
self.all_sprites_list.draw()
# Put the text on the screen.
output = "Score: {}".format(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 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.kill()
self.score += 1
window = MyApplication(SCREEN_WIDTH, SCREEN_HEIGHT)
window.setup()
arcade.run()
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