#! /user/bin/python3
# -*- coding:utf-8 -*-
import pygame


class Settings():
    """存储游戏的所有设置的类"""
    def __init__(self):
        # 初始化游戏的静态设置
        # 屏幕设置
        self.game_name = 'Alien Invasion 1.0'
        self.screen_width = 800
        self.screen_height = 640
        self.bg_color = (137, 157, 192)

        # 飞船设置
        self.ship_limit = 3

        # 子弹设置
        self.bullet_width = 3
        self.bullet_height = 15
        self.bullet_color = 232, 221, 203
        self.bullets_allowed = 25

        # 外星人设置
        self.fleet_drop_speed = 1
        # fleet_direction为1时向右移动，为-1时向左移动
        self.fleet_direction = 1
        self.alien_points = 10

        #以什么样的速度加快游戏
        self.speedup_scale = 1.1

        self.initialize_dynamic_settings()

    def initialize_dynamic_settings(self):
        """初始化随游戏速度变化的设置"""
        self.ship_speed_factor = 1.5
        self.bullet_speed_factor = 3
        self.alien_speed_factor = 1
        # fleet_direction为1时向右移动，为-1时向左移动
        self.fleet_direction = 1

    def increase_speed(self):
        """提高游戏速度"""
        self.ship_speed_factor *= self.speedup_scale
        self.bullet_speed_factor *= self.speedup_scale
        self.alien_speed_factor *= self.speedup_scale
