base.py

# Importing the required libraries
import os
import pygame

# Global Variables

# Images
BASE_IMG = pygame.transform.scale2x(pygame.image.load(os.path.join("imgs", "base.png")))

class Base:
    """
    Class which defines the base (or) ground
    """

    # Base class Attributes
    VEL = 5
    WIDTH = BASE_IMG.get_width()
    IMG = BASE_IMG

    def __init__(self, y):
        self.y = y
        self.x1 = 0
        self.x2 = self.WIDTH

    def move(self):
        """
        Method which moves the base image, which gives us a 
        visual impression that the bird is moving along the x-axis.
        """

        self.x1 -= self.VEL
        self.x2 -= self.VEL

        if self.x1 + self.WIDTH < 0:
            self.x1 = self.x2 + self.WIDTH

        if self.x2 + self.WIDTH < 0:
            self.x2 = self.x1 + self.WIDTH

    def draw(self, win):
        """
        Method which draws the base image on to the pygame window
        """

        win.blit(self.IMG, (self.x1, self.y))
        win.blit(self.IMG, (self.x2, self.y))