ship.py

# -- STAR FIGHT --
# ====================

# _______________
# Date - 26102020
# ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
import pygame
from pygame.sprite import Sprite


class Ship(Sprite):
    """A class to manage the ship."""

    def __init__(self, sf_game):
        """Initialize the ship and set its starting position."""
        super().__init__()

        self.screen = sf_game.screen
        self.settings = sf_game.settings

        self.screen_rect = sf_game.screen.get_rect()

        # Load the ship image and get its rect
        self.image = pygame.image.load('Images/Spaceship.bmp')
        self.rect = self.image.get_rect()

        # Start each new ship at the bottom center of the screen
        # self.rect.midbottom makes the midbottom of the ship take the required value
        self.rect.midbottom = self.screen_rect.midbottom

        # Store a decimal value of the ships position
        # This needed to be done as rect can only store integer values and not float values
        self.x = float(self.rect.x)

        # Movement flags
        self.moving_right = False
        self.moving_left = False

    def update_position(self):
        """Update ships position based on movement flags"""
        # Update ships x value, not rect /why?/
        if self.moving_right and self.rect.right < self.screen_rect.right:
            self.x += self.settings.ship_speed
        if self.moving_left and self.rect.left > 0:
            self.x -= self.settings.ship_speed

        # Update rect object from self x
        # Non integer values are converted into integer values
        self.rect.x = self.x

    def blitme(self):
        """Draw the ship at its current location."""
        self.screen.blit(self.image, self.rect)

    def center_ship(self):
        """Center the ship on the screen"""
        self.rect.midbottom = self.screen_rect.midbottom
        self.x = float(self.rect.x)