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settings.py
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settings.py
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# This file contains the Settings class for Alien Invasion
class Settings:
"""
Settings class to store all of the settings for Alien Invasion
"""
def __init__(self):
"""
Initialises static game settings
"""
# Screen settings
# The screen has the (0,0) point at the top-left corner
# x-coordinates increase to the right of the origin
# y-coordinates increase below the origin
self.screen_width = 1200
self.screen_height = 800
# the point (1200,800) represents the bottom right of our screen
self.bg_colour = (230,230,230) # colour matching the ship's background
# Ship setting
self.ship_limit = 3
# Bullet settings
self.bullets_allowed = 5 # limits how many bullets a player can fire
self.bullet_width = 3
self.bullet_height = 15
self.bullet_colour = (60,60,60)
# Alien setting
self.fleet_drop_speed = 10
self.score_scale = 1.1618
# Game speed up rate
self.speedup_scale = 1.3
self.initialise_dynamic_settings()
def initialise_dynamic_settings(self):
"""
Initialises settings that change throughout the game
"""
# Ship setting
self.ship_speed = 1.5
# Bullet settings
self.bullet_speed = 5.0
# Alien setting
self.alien_speed = 1.0
self.fleet_direction = 1 # 1 => fleet to the right; -1 => fleet to the left
self.alien_points = 10
def increase_speed(self):
"""
Increases speed dynamic settings and alien score value
"""
self.ship_speed *= self.speedup_scale
self.bullet_speed *= self.speedup_scale
self.alien_speed *= self.speedup_scale
self.alien_points = int(self.alien_points * self.score_scale)