import pygame
from pygame.sprite import Sprite


class Ship(Sprite):
    def __init__(self, ai_settings, screen):
        """"Initialize the spacecraft and set its initial position"""
        super(Ship, self).__init__()
        self.screen = screen
        self.ai_settings = ai_settings
        # Loading spacecraft image and obtaining its external rectangle
        self.image = pygame.transform.rotate(pygame.image.load('images/soldier.png'), 90)
        self.rect = self.image.get_rect()
        self.screen_rect = screen.get_rect()
        # Put each new ship in the center of the bottom of the screen
        self.rect.centerx = self.screen_rect.centerx
        self.rect.bottom = self.screen_rect.bottom
        self.center = float(self.rect.centerx)
        # Mobile sign
        self.moving_right = False
        self.moving_left = False

    def update(self):
        """Adjust the position of the spacecraft according to the moving signs"""
        # Update the center value of the ship instead of rect
        if self.moving_right and self.rect.right < self.screen_rect.right:
            self.center += self.ai_settings.ship_speed_factor
        if self.moving_left and self.rect.left > 0:
            self.center -= self.ai_settings.ship_speed_factor
        # according to self.center Update rect object
        self.rect.centerx = self.center

    def blitme(self):
        """Draw the spacecraft at the designated location"""
        self.screen.blit(self.image, self.rect)

    def center_ship(self):
        """Center the ship on the screen"""
        self.center = self.screen_rect.centerx
