pipe.py

import pygame
import os
import random

gap = 200
vel = 5

class Pipe():
    """
    represents a pipe object
    """

    def __init__(self, x):
        """
        initialize pipe object
        :param x: int
        """
        self.x = x
        self.height = 0

        self.top = 0
        self.bottom = 0
        pipe_img = pygame.transform.scale2x(pygame.image.load(os.path.join("assets","pipe.png")).convert_alpha())
        self.pipe_top = pygame.transform.flip(pipe_img, False, True)
        self.pipe_bottom = pipe_img

        self.passed = False

        self.set_height()

    def set_height(self):
        """
        set the height of the pipe, from the top of the screen
        :return: None
        """
        self.height = random.randrange(50, 450)
        self.top = self.height - self.pipe_top.get_height()
        self.bottom = self.height + gap

    def move(self):
        """
        move pipe based on vel
        :return: None
        """
        self.x -= vel

    def draw(self, win):
        """
        draw both the top and bottom of the pipe
        :param win: pygame window/surface
        :return: None
        """
        win.blit(self.pipe_top, (self.x, self.top))
        win.blit(self.pipe_bottom, (self.x, self.bottom))


    def collide(self, bird, win):
        """
        returns if a point is colliding with the pipe
        :param bird: Bird object
        :return: Bool
        """
        bird_mask = bird.get_mask()
        top_mask = pygame.mask.from_surface(self.pipe_top)
        bottom_mask = pygame.mask.from_surface(self.pipe_bottom)
        top_offset = (self.x - bird.x, self.top - round(bird.y))
        bottom_offset = (self.x - bird.x, self.bottom - round(bird.y))

        b_point = bird_mask.overlap(bottom_mask, bottom_offset)
        t_point = bird_mask.overlap(top_mask,top_offset)

        if b_point or t_point:
            return True

        return False