Python flappy bird game

Here is the code You can copy it and run it from pydroid3 app.
import pygame_sdl2
pygame_sdl2.import_as_pygame()
'''
Android is much faster with hardware rendering
This dirty code shows how it could be done

We have just replaced SCREEN.blit with SCREEN_blit
and pygame.display.update with pygame_display_update
and gained much more playable framerate

Note that this code probably contains memory leaks,
unoptimal reinitialization of Sprites and other bad stuff

It is here just to display how slow is blitting

Writing everything correctly from start (Sprite) is preferred
'''


def SCREEN_blit(what, at):
global RENDERER, spritecache
Sprite(RENDERER.load_texture(what)).render(at)


def pygame_display_update():
RENDERER.render_present()
RENDERER.clear((0, 0, 0))


# Set this variable to use the deprecated behavior
useswblitting = False

from itertools import cycle
import random
import sys

import pygame
from pygame.locals import *
from pygame.render import *

FPS = 30
SCREENWIDTH = 288 * 2
SCREENHEIGHT = 512 * 2
# amount by which base can maximum shift to left
PIPEGAPSIZE = 100 * 2 # gap between upper and lower part of pipe
BASEY = SCREENHEIGHT * 0.79
# image, sound and hitmask dicts
IMAGES, SOUNDS, HITMASKS = {}, {}, {}

# list of all possible players (tuple of 3 positions of flap)
PLAYERS_LIST = (
# red bird
(
'assets/sprites/redbird-upflap.png',
'assets/sprites/redbird-midflap.png',
'assets/sprites/redbird-downflap.png',
),
# blue bird
(
# amount by which base can maximum shift to left
'assets/sprites/bluebird-upflap.png',
'assets/sprites/bluebird-midflap.png',
'assets/sprites/bluebird-downflap.png',
),
# yellow bird
(
'assets/sprites/yellowbird-upflap.png',
'assets/sprites/yellowbird-midflap.png',
'assets/sprites/yellowbird-downflap.png',
),
)

# list of backgrounds
BACKGROUNDS_LIST = (
'assets/sprites/background-day.png',
'assets/sprites/background-night.png',
)

# list of pipes
PIPES_LIST = (
'assets/sprites/pipe-green.png',
'assets/sprites/pipe-red.png',
)

try:
xrange
except NameError:
xrange = range


def main():
global SCREEN, FPSCLOCK, RENDERER
pygame.init()
FPSCLOCK = pygame.time.Clock()
SCREEN = pygame.display.set_mode((SCREENWIDTH, SCREENHEIGHT))
RENDERER = Renderer(None)
pygame.display.set_caption('Flappy Bird')

if useswblitting:
global SCREEN_blit, pygame_display_update
SCREEN_blit = SCREEN.blit
pygame_display_update = pygame.display.update

# numbers sprites for score display
IMAGES['numbers'] = (pygame.image.load('assets/sprites/0.png').convert_alpha(), pygame.image.load('assets/sprites/1.png').convert_alpha(), pygame.image.load('assets/sprites/2.png').convert_alpha(), pygame.image.load('assets/sprites/3.png').convert_alpha(), pygame.image.load('assets/sprites/4.png').convert_alpha(), pygame.image.load('assets/sprites/5.png').convert_alpha(), pygame.image.load('assets/sprites/6.png').convert_alpha(), pygame.image.load('assets/sprites/7.png').convert_alpha(), pygame.image.load('assets/sprites/8.png').convert_alpha(), pygame.image.load('assets/sprites/9.png').convert_alpha())

# game over sprite
IMAGES['gameover'] = pygame.image.load('assets/sprites/gameover.png').convert_alpha()
# message sprite for welcome screen
IMAGES['message'] = pygame.image.load('assets/sprites/message.png').convert_alpha()
# base (ground) sprite
IMAGES['base'] = pygame.image.load('assets/sprites/base.png').convert_alpha()

# sounds
if 'win' in sys.platform:
soundExt = '.wav'
else:
soundExt = '.ogg'

SOUNDS['die'] = pygame.mixer.Sound('assets/audio/die' + soundExt)
SOUNDS['hit'] = pygame.mixer.Sound('assets/audio/hit' + soundExt)
SOUNDS['point'] = pygame.mixer.Sound('assets/audio/point' + soundExt)
SOUNDS['swoosh'] = pygame.mixer.Sound('assets/audio/swoosh' + soundExt)
SOUNDS['wing'] = pygame.mixer.Sound('assets/audio/wing' + soundExt)

while True:
# select random background sprites
randBg = random.randint(0, len(BACKGROUNDS_LIST) - 1)
IMAGES['background'] = pygame.image.load(BACKGROUNDS_LIST[randBg]).convert()

# select random player sprites
randPlayer = random.randint(0, len(PLAYERS_LIST) - 1)
IMAGES['player'] = (
pygame.image.load(PLAYERS_LIST[randPlayer][0]).convert_alpha(),
pygame.image.load(PLAYERS_LIST[randPlayer][1]).convert_alpha(),
pygame.image.load(PLAYERS_LIST[randPlayer][2]).convert_alpha(),
)

# select random pipe sprites
pipeindex = random.randint(0, len(PIPES_LIST) - 1)
IMAGES['pipe'] = (
pygame.transform.rotate(pygame.image.load(PIPES_LIST[pipeindex]).convert_alpha(), 180),
pygame.image.load(PIPES_LIST[pipeindex]).convert_alpha(),
)

# hismask for pipes
HI