settings.py

class Settings():
    """A class to store all settings for alien Invasion."""

    def __init__(self):
        """Initialize the game's settings."""
        #screen settings
        self.screen_width = 1200
        self.screen_height = 800
        self.bg_color = (230, 230, 230)

        #ship sttings
        self.ship_speed_factor = 1.5

        #bullet settings
        self.bullet_speed_factor = 3
        self.ship_limit = 3
        self.bullet_width = 3
        self.bullet_height = 15
        self.bullet_color = 60,60,60
        self.bullets_allowed = 3

        #alien settings
        self.alien_speed_factor = 1
        self.fleet_drop_speed = 10
        
        self.speedup_scale = 1.1
        self.score_scale = 1.5
        self.initialize_dynamic_settings()

    def initialize_dynamic_settings(self):
        self.ship_speed_factor = 1.5
        self.bullet_speed_factor = 3
        self.alien_speed_factor = 1

        #fleet_direction of represents right; -1 represents left.
        self.fleet_direction = 1

        #scoring
        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_factor *= self.speedup_scale

        self.alien_points = int(self.alien_points * self.score_scale)
        print(self.alien_points)