model.py
"""
飞机大战：1.0
"""
import pygame
import random
import time
pygame.init()
# 定义常量
SCREEN_SIZE = (520, 854)
SCREEN_RECT = pygame.Rect(0, 0, *SCREEN_SIZE)
class GameSprite(pygame.sprite.Sprite):
"""存放所有游戏精灵类型"""
def __init__(self, image_path, speed=1):
super().__init__()
self.image = pygame.image.load(image_path)
self.rect =self.image.get_rect()
self.speed = speed
def update(self):
# 默认运动更新方法
self.rect.y +=self.speed
class BackgroundSprite(GameSprite):
"""背景"""
def __init__(self, image_path, next=False):
super().__init__(image_path)
if next:
self.rect.y = -SCREEN_SIZE[1]
def update(self):
# 调用父类的方法，执行运动
super().update()
# 子类中判断边界
if self.rect.y > SCREEN_SIZE[1]:
self.rect.y = -SCREEN_SIZE[1]
class HeroSprite(GameSprite):
"""英雄飞机精灵组"""
def __init__(self, image_path):
super().__init__(image_path)
# 初始化英雄飞机位置
self.rect.centerx = SCREEN_RECT.centerx
self.rect.centery = SCREEN_RECT.centery +200
# 子弹精灵组对象
self.bullets = pygame.sprite.Group()
def update(self):
# 水平边界判断
if self.rect.x <=0:
self.rect.x =0
elif self.rect.x >= SCREEN_RECT.width -self.rect.width:
self.rect.x = SCREEN_RECT.width -self.rect.width
# 垂直边界判断
if self.rect.y <=0:
self.rect.y =0
elif self.rect.y >= SCREEN_RECT.height -self.rect.height:
self.rect.y = SCREEN_RECT.height -self.rect.height
def fire(self):
# 创建子弹对象进行攻击
if len(self.bullets) <5:
bullet = BulletSprite(self.rect.centerx-30, self.rect.y)
self.bullets.add(bullet)
class BulletSprite(GameSprite):
"""子弹精灵组"""
def __init__(self, x, y):
super().__init__("./images/bullet1.png", speed=-8)
self.rect.x = x
self.rect.y = y
def update(self):
# 调用父类的方法进行操作
super().update()
# 边界判断
if self.rect.y <= -self.rect.height:
# 子弹从精灵组中删除
self.kill()
def __del__(self):
print("子弹对象已经销毁")
class EnemySprite(GameSprite):
"""敌方飞机精灵组"""
def __init__(self):
# 初始化敌方飞机的数据：图片，速度
super().__init__("./images/enemy1.png", speed=random.randint(3, 5))
self.rect.x = random.randint(0, SCREEN_RECT.width -self.rect.width)
self.rect.y = -self.rect.height
def update(self):
super().update()
# 边界判断
if self.rect.y > SCREEN_RECT.height:
# 飞机一旦超出屏幕，进行销毁操作
self.kill()
def __del__(self):
self.destroy()
def destroy(self):
print("销毁敌机")
for img_pathin ["./images/down_1.png", "./images/down_2.png"]:
time.sleep(0.05)
self.image = pygame.image.load(img_path)
# engine.py 见下一篇
