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sprite_collect_coins_move_down_improved.py
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sprite_collect_coins_move_down_improved.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 = 800
SCREEN_HEIGHT = 600
class Coin(arcade.Sprite):
"""
This class represents the coins on our screen. It is a child class of
the arcade library's "Sprite" class.
"""
def reset_pos(self):
# Reset the coin to a random spot above the screen
self.center_y = random.randrange(SCREEN_HEIGHT + 20,
SCREEN_HEIGHT + 100)
self.center_x = random.randrange(SCREEN_WIDTH)
def update(self):
# See if the coin has fallen off the bottom of the screen.
# If so, reset it.
if self.top < 0:
self.reset_pos()
class MyGame(arcade.Window):
""" Main application class. """
def __init__(self, width, height):
"""
Initializer
:param width:
:param height:
"""
super().__init__(width, height)
# Sprite lists
self.all_sprites_list = None
self.coin_list = None
# Set up the player
self.score = 0
self.player_sprite = None
def start_new_game(self):
""" Set up the game and initialize the variables. """
# 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 = 70
self.all_sprites_list.append(self.player_sprite)
for i in range(50):
# Create the coin instance
coin = Coin("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)
# 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.player_sprite.draw()
self.coin_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.player_sprite.update()
self.coin_list.update()
self.coin_list.move(0, -1)
# 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.reset_pos()
self.score += 1
def main():
window = MyGame(SCREEN_WIDTH, SCREEN_HEIGHT)
window.start_new_game()
arcade.run()
if __name__ == "__main__":
main()