"""
演示爆炸效果的例子
"""
import random
import arcade
import os
SPRITE_SCALING_PLAYER = 0.5
SPRITE_SCALING_COIN = 0.2
SPRITE_SCALING_LASER = 0.8
COIN_COUNT = 50
SCREEN_WIDTH = 800
SCREEN_HEIGHT = 600
SCREEN_TITLE = "演示爆炸效果的例子,译：lixingqiu"
BULLET_SPEED = 5
EXPLOSION_TEXTURE_COUNT = 60
class Explosion(arcade.Sprite):
""" 创建可爆炸的角色 """
def __init__(self, texture_list):
super().__init__("images/explosion/explosion0000.png")
# 第一帧
self.current_texture = 0 # 这相当于造型索引号
self.textures = texture_list # 这相当于每帧图片列表
def update(self):
# 更新每帧的图片，到了最后一帧后就会删除自己。
self.current_texture += 1
if self.current_texture < len(self.textures):
self.set_texture(self.current_texture)
else:
self.kill()
class MyGame(arcade.Window):
""" Main application class. """
def __init__(self):
""" Initializer """
# 调用父类的初始化器
super().__init__(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_TITLE)
# 设置工作目录 not by lixingqiu
file_path = os.path.dirname(os.path.abspath(__file__))
os.chdir(file_path)
# 定义要用到的角色列表们
self.player_list = None
self.coin_list = None
self.bullet_list = None
self.explosions_list = None
# 定义玩家变量
self.player_sprite = None
self.score = 0
# 不显示鼠标指针
self.set_mouse_visible(False)
# 加载声音对象
# self.gun_sound = arcade.sound.load_sound("sounds/laser1.wav")
# self.hit_sound = arcade.sound.load_sound("sounds/phaseJump1.wav")
# 设置背景颜色
arcade.set_background_color(arcade.color.AMAZON)
def setup(self):
""" 设置与实例化游戏中要用到的变量 """
# 角色列表
self.player_list = arcade.SpriteList()
self.coin_list = arcade.SpriteList()
self.bullet_list = arcade.SpriteList()
self.explosions_list = arcade.SpriteList()
# Pre-load the animation frames. We don't do this in the __init__ because it
# takes too long and would cause the game to pause.
# 预装爆炸效果的动画帧图，不在初始化方法中加载的原因是这要花太多的时间会引起游戏卡
self.explosion_texture_list = []
for i in range(EXPLOSION_TEXTURE_COUNT):
# 加载从 explosion0000.png 到 explosion0270.png 的所有图片为爆炸效果动画帧
texture_name = f"images/explosion/explosion{i:04d}.png"
self.explosion_texture_list.append(arcade.load_texture(texture_name))
# 设置玩家的初始得分
self.score = 0
# 实例化玩家对象
self.player_sprite = arcade.Sprite("images/character.png", SPRITE_SCALING_PLAYER)
self.player_sprite.center_x = 50
self.player_sprite.center_y = 70
self.player_list.append(self.player_sprite)
# 创建金币
for coin_index in range(COIN_COUNT):
# 实例化一个金币对象
coin = arcade.Sprite("images/coin_01.png", SPRITE_SCALING_COIN)
# 放置到随机坐标
coin.center_x = random.randrange(SCREEN_WIDTH)
coin.center_y = random.randrange(150, SCREEN_HEIGHT)
# 增加到金币列表
self.coin_list.append(coin)
# 设置背景颜色
arcade.set_background_color(arcade.color.AMAZON)
def on_draw(self):
"""
Render the screen.
"""
# 此命令要在所有命之前
arcade.start_render()
# 画所有的角色
self.coin_list.draw()
self.bullet_list.draw()
self.player_list.draw()
self.explosions_list.draw()
# 显示得分情况文本
arcade.draw_text(f"Score: {self.score}", 10, 20, arcade.color.WHITE, 14)
def on_mouse_motion(self, x, y, dx, dy):
"""
鼠标指针移动事件
"""
self.player_sprite.center_x = x
def on_mouse_press(self, x, y, button, modifiers):
"""
单击鼠标时调用此方法
"""
# 枪声
# arcade.sound.play_sound(self.gun_sound)
# 创建一子弹
bullet = arcade.Sprite("images/laserBlue01.png", SPRITE_SCALING_LASER)
# 图像是朝向的，所以要旋转它
bullet.angle = 90
# 给它一个y速度
bullet.change_y = BULLET_SPEED
# 放到玩家坐标
bullet.center_x = self.player_sprite.center_x
bullet.bottom = self.player_sprite.top
# 加到子弹角色列表
self.bullet_list.append(bullet)
def update(self, delta_time):
""" Movement and game logic """
# 调用子弹列表和爆炸效果列表更新
self.bullet_list.update()
self.explosions_list.update()
# 遍历每颗子弹做碰撞检测
for bullet in self.bullet_list:
# 子弹和所有金币的碰撞检测
hit_list = arcade.check_for_collision_with_list(bullet, self.coin_list)
# 如果碰到了，生成爆炸效果
if len(hit_list) > 0:
explosion = Explosion(self.explosion_texture_list)
explosion.center_x = hit_list[0].center_x
explosion.center_y = hit_list[0].center_y
self.explosions_list.append(explosion)
bullet.kill()
#每个金币都删除并加分
for coin in hit_list:
coin.kill()
self.score += 1
# 击中声效
# arcade.sound.play_sound(self.hit_sound)
# 子弹离屏，删除它
if bullet.bottom > SCREEN_HEIGHT:
bullet.kill()
def main():
window = MyGame()
window.setup()
arcade.run()
if __name__ == "__main__":
main()
