"""
本程序演示一个收集金币的小程序.所有的金币都不会在墙上.这是用arcade街机游戏模块制作的样例小程序.
"""
import arcade
import random
import os
SPRITE_SCALING = 0.5
SPRITE_SCALING_COIN = 0.2
SCREEN_WIDTH = 800
SCREEN_HEIGHT = 600
SCREEN_TITLE = "Python收集金币游戏不会在墙上_改编：李兴球"
NUMBER_OF_COINS = 50
MOVEMENT_SPEED = 5
class MyGame(arcade.Window):
""" Main application class. """
def __init__(self, width, height, title):
"""
初始化方法,这里是定义一些游戏的属性.
"""
super().__init__(width, height, title)
# 设置程序的工作目录 ,使用python -m运行的时候需要,否则可以去掉.
file_path = os.path.dirname(os.path.abspath(__file__))
os.chdir(file_path)
# 定义角色列表
self.all_sprites_list = None
self.coin_list = None
# 设置游戏属性的一些初始值
self.score = 0
self.player_sprite = None
self.wall_list = None
self.physics_engine = None
def setup(self):
""" 设置游戏变量的具体值. """
# 实例化角色列表
self.all_sprites_list = arcade.SpriteList()
self.wall_list = arcade.SpriteList()
self.coin_list = arcade.SpriteList()
# 实例化玩家
self.score = 0
self.player_sprite = arcade.Sprite("images/princess.png", SPRITE_SCALING*0.4)
self.player_sprite.center_x = 50
self.player_sprite.center_y = 64
# -- 实例化墙
for y in range(0, 800, 200):
for x in range(100, 700, 64):
wall = arcade.Sprite("images/boxCrate_double.png", SPRITE_SCALING)
wall.center_x = x
wall.center_y = y
self.wall_list.append(wall)
# -- 随机放一些金币
for i in range(NUMBER_OF_COINS):
# 创建金币实例
coin = arcade.Sprite("images/coin_01.png", SPRITE_SCALING_COIN)
# 金币放置成功的逻辑变量
coin_placed_successfully = False
# 直到成功才退出while循环
while not coin_placed_successfully:
# 放置到随机位置
coin.center_x = random.randrange(SCREEN_WIDTH)
coin.center_y = random.randrange(SCREEN_HEIGHT)
# 检测是否和墙有碰撞
wall_hit_list = arcade.check_for_collision_with_list(coin, self.wall_list)
# 检测是否和其它金币有重叠
coin_hit_list = arcade.check_for_collision_with_list(coin, self.coin_list)
if len(wall_hit_list) == 0 and len(coin_hit_list) == 0:
# 如果都是0,放置成功
coin_placed_successfully = True
# 增加金币到列表
self.coin_list.append(coin)
self.physics_engine = arcade.PhysicsEngineSimple(self.player_sprite, self.wall_list)
# 设置游戏的背景颜色
arcade.set_background_color(arcade.color.AMAZON)
def on_draw(self):
"""
Render the screen.
"""
# 画其它角色之前这句代码要执行
arcade.start_render()
# 画所有的角色
self.wall_list.draw()
self.coin_list.draw()
self.player_sprite.draw()
# 放置文本
output = f"得分: {self.score}"
arcade.draw_text(output, 10, 20, arcade.color.WHITE, 14)
def on_key_press(self, key, modifiers):
"""按键事件. """
if key == arcade.key.UP:
self.player_sprite.change_y = MOVEMENT_SPEED
elif key == arcade.key.DOWN:
self.player_sprite.change_y = -MOVEMENT_SPEED
elif key == arcade.key.LEFT:
self.player_sprite.change_x = -MOVEMENT_SPEED
elif key == arcade.key.RIGHT:
self.player_sprite.change_x = MOVEMENT_SPEED
def on_key_release(self, key, modifiers):
"""松键事件 """
if key == arcade.key.UP or key == arcade.key.DOWN:
self.player_sprite.change_y = 0
elif key == arcade.key.LEFT or key == arcade.key.RIGHT:
self.player_sprite.change_x = 0
def update(self, delta_time):
""" 游戏逻辑 """
# 检测玩家是否有没有碰到金币
coin_hit_list = arcade.check_for_collision_with_list(self.player_sprite, self.coin_list)
for coin in coin_hit_list:
coin.kill()
self.score += 1
self.physics_engine.update()
def main():
""" 主要函数 """
window = MyGame(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_TITLE)
window.setup()
arcade.run()
if __name__ == "__main__":
main()
