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# 开发日期: 2024/4/26
import pygame
class Settings ( ) :
""" 储存《外星人入侵》的所有设置的类 """
def __init__ ( self ) :
""" 初始化游戏的设置 """
# 屏幕设置
self . screen_width = 1400
self . screen_height = 800
self . bg_color = ( 0 , 128 , 128 )
# 飞船的设置
self . ship_limit = 2
# 子弹设置
self . bullets_allowed = 5
self . bullet_speed_factor = 2
# 外星人设置
self . fleet_drop_speed = 10
# 以什么样的速度加快游戏节奏
self . speedup_scale = 1.1
# 外星人点数的提高速度
self . score_scale = 1.5
self . initialize_dynamic_settings ( )
def initialize_dynamic_settings ( self ) :
""" 初始化随游戏进行而变化的设置 """
self . ship_speed_factor = 1.5
self . bullet_speed_factor = 3
self . alien_speed_factor = 1
# fleet_direction为1表示向右移动，
self . fleet_direction = 1
self . alien_points = 30
def increase_speed ( self ) :
""" 提高速度设置和外星人点数 """
# 通过增加速度因子和分数的比例因子来提高游戏中飞船、子弹和外星人的速度，以及击落外星人时获得的分数
self . ship_speed_factor * = self . speedup_scale
self . bullet_speed_factor * = self . speedup_scale
self . alien_speed_factor * = self . speedup_scale
self . alien_points = int ( self . alien_points * self . score_scale )
