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bird.py
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bird.py
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# Importing the required libraries
import os
import pygame
# Global Variables
# Images
BIRD_IMGS = [pygame.transform.scale2x(pygame.image.load(os.path.join("imgs", "bird1.png"))), pygame.transform.scale2x(pygame.image.load(os.path.join("imgs", "bird2.png"))), pygame.transform.scale2x(pygame.image.load(os.path.join("imgs", "bird3.png")))]
class Bird:
"""
Class which defines the flappy bird
"""
# Bird class Attributes
IMGS = BIRD_IMGS
MAX_ROTATION = 25
ROT_VEL = 20
ANIMATION_TIME = 5
def __init__(self, x, y):
self.x = x
self.y = y
self.tilt = 0
self.tick_count = 0
self.vel = 0
self.height = self.y
self.img_count = 0
self.img = self.IMGS[0]
def jump(self):
"""
Method which defines bird jump
"""
self.vel = -10.5
self.tick_count = 0
self.height = self.y
def move(self):
"""
Method which defines bird movement
"""
self.tick_count += 1
d = self.vel * self.tick_count + 1.5 * self.tick_count ** 2
if d >= 16:
d = 16
if d < 0:
d -= 2
self.y += d
if d < 0 or self.y < self.height + 50:
if self.tilt < self.MAX_ROTATION:
self.tilt = self.MAX_ROTATION
else:
if self.tilt > -90:
self.tilt -= self.ROT_VEL
def draw(self, win):
"""
Method which draws the flappy bird on the pygame window
"""
self.img_count += 1
if self.img_count < self.ANIMATION_TIME:
self.img = self.IMGS[0]
elif self.img_count < self.ANIMATION_TIME * 2:
self.img = self.IMGS[1]
elif self.img_count < self.ANIMATION_TIME * 3:
self.img = self.IMGS[2]
elif self.img_count < self.ANIMATION_TIME * 4:
self.img = self.IMGS[1]
elif self.img_count == self.ANIMATION_TIME * 4 + 1:
self.img = self.IMGS[0]
self.img_count = 0
if self.tilt <= -80:
self.img = self.IMGS[1]
self.img_count = self.ANIMATION_TIME * 2
rotated_image = pygame.transform.rotate(self.img, self.tilt)
new_rect = rotated_image.get_rect(center = self.img.get_rect(topleft = (self.x, self.y)).center)
win.blit(rotated_image, new_rect.topleft)
def get_mask(self):
"""
Method which creates a mask of the flappy bird for detection collisions
"""
return pygame.mask.from_surface(self.img)