游戏简介:游戏开始时,一群外星人出现,他们在屏幕中向下移动,玩家的任务就是消灭这些外星人,一群外星人被消灭之后, 玩家将提高一个等级,同时 将会出现移动速度更快的外星人,每消灭一个外星人都将会有一定的得分,消灭一群外星 人之后还会有额外的得分,得分和等级显示在游戏界面的右上角,历史最高得分显示在中间,如果玩家的飞船被外星 人撞到之后,玩家将损失一艘飞 船,直到玩家损失三艘飞船之后,游戏结束。
玩法介绍: 方向键:移动飞船
空格键:开火
‘q’键:结束游戏
项目结构:
相关代码:
aliens_invasion.py
import pygame
from settings import Settings
from ship import Ship
import game_funtions as gf
from game_stats import GameStats
from button import Button
from scoreboard import Scoreboard
def run_game():
pygame.init()
ai_settings=Settings()
screen=pygame.display.set_mode((ai_settings.screen_width,ai_settings.screen_height))
pygame.display.set_caption("Alien Invasion")
play_button=Button(screen,'Play')
#存储游戏统计信息的实例
stats=GameStats(ai_settings)
sb=Scoreboard(ai_settings,screen,stats)
#飞船
ship=Ship(ai_settings,screen)
#子弹
bullets=pygame.sprite.Group()
#外星人
aliens=pygame.sprite.Group()
gf.create_fleet(ai_settings,screen,ship,aliens)
while True:
gf.check_events(ai_settings,screen,stats,sb,play_button,ship,aliens,bullets)
if stats.game_active:
ship.update()
gf.update_bullets(ai_settings,screen,stats,sb,ship,aliens,bullets)
gf.update_aliens(ai_settings,stats,screen,sb,ship,aliens,bullets)
gf.update_screen(ai_settings,screen,stats,sb,ship,aliens,bullets,play_button)
run_game()
settings.py
class Settings():
"""存储《外星人入侵》的所有设置的类"""
def __init__(self):
self.screen_width=1200
self.screen_height=750
self.bg_color=(255,255,255)
self.ship_speed_factor=0.5
self.ship_limit=3
self.bullet_speed_factor=0.8
self.bullet_width=3
self.bullet_height=12
self.bullet_color=60,60,60
self.bullets_allowed=3
self.alien_speed_factor=0.4
self.fleet_drop_speed=10
#fleet_direction为1表示向右移,为-1表示向左移
self.fleet_direction=1
self.speedup_scale=1.1
self.score_scale=1.5
self.initialiaze_dynamic_settings()
def initialiaze_dynamic_settings(self):
self.ship_speed_factor=1.5
self.bullet_speed_factor=2
self.alien_speed_factor=1
self.fleet_direction=1
self.alien_points=50
def increase_speed(self):
self.ship_speed_factor*=self.speedup_scale
self.bullet_speed_factor*=self.speedup_scale
self.alien_speed_fac