note* this code does not include the score/lives

runner_game.py

import pygame
import random
from city_scroller import Scroller

BLACK = (0, 0, 0)
WHITE = (255, 255, 255)
GREEN = (0, 255, 0)
RED = (255, 0, 0)
BLUE = (0, 0, 255)
GREY = (129, 129, 129)
PINK = (255, 192, 203)
LAVENDER = (0, 128, 128)
colors = [BLACK, WHITE, GREEN, RED, BLUE, GREY, PINK]

# def random_color():
	# return random.choice(colors)


pygame.init()

pygame.display.set_caption("CityScroller")

SCREEN_WIDTH = 800
SCREEN_HEIGHT = 600
screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))

# Loop until the user clicks the close button.
done = False

# Used to manage how fast the screen updates
clock = pygame.time.Clock()

class RunnerSprite(pygame.sprite.Sprite):
	def __init__(self, colors, width, height):
		pygame.sprite.Sprite.__init__(self)
		self.colors = colors
		self.width = width
		self.height = height
		self.image = pygame.Surface([width, height])
		self.rect = self.image.get_rect()
		self.image.fill(colors)
	def update(self):
		self.rect.x -= 1 
		if self.rect.x <= 0:
			self.rect.x = (SCREEN_WIDTH + 10)
			self.rect.y = random.randint(1, 550)
	
# 	def draw(self):
# 		pygame.draw.circle(screen, WHITE, self.position, self.size)
	
		


all_sprites_list = pygame.sprite.Group()

PLAYER_1_SPRITE = RunnerSprite(WHITE, 30, 10)
all_sprites_list.add(PLAYER_1_SPRITE)

good_sprite_list = pygame.sprite.Group()

bad_sprite_list = pygame.sprite.Group()

for i in range (10):
	GOOD_1_SPRITE = RunnerSprite(GREY, 15, 15)
	GOOD_1_SPRITE.rect.x = random.randint(0,800)
	GOOD_1_SPRITE.rect.y = random.randint(0, 550)
	good_sprite_list.add(GOOD_1_SPRITE)
	all_sprites_list.add(GOOD_1_SPRITE)
for i in range (100):
	BAD_SPRITE = RunnerSprite(LAVENDER, 15, 15)
	BAD_SPRITE.rect.x = random.randint(0,800)
	BAD_SPRITE.rect.y = random.randint(0, 550)
	bad_sprite_list.add(BAD_SPRITE)
	all_sprites_list.add(BAD_SPRITE)

# collide_rect, collide_PLAYER_1_SPRITE_ratio, collide_BAD_SPRITE,
# collide_BAD_SPRITE_ratio, collide_mask

# blocks_hit_list = pygame.sprite.spritecollide(PLAYER_1_SPRITE, good_sprite_list, True)
# score = 0 
# for GOOD_1_SPRITE in blocks_hit_list:
# 		score +=1

def message_display(text):
	largeText = pygame.font.Font('freesansbold.ttf',115)
	TextSurf, TextRect = text_objects(text, largeText)
	TextRect.center = ((display_width/2),(display_height/2))
	gameDisplay.blit(TextSurf, TextRect)

	pygame.display.update()


FRONT_SCROLLER_COLOR = (PINK)
MIDDLE_SCROLLER_COLOR = (30,30,100)
BACK_SCROLLER_COLOR = (50,50,150)
BACKGROUND_COLOR = (167, 219, 216)

front_scroller = Scroller(SCREEN_WIDTH, 400, SCREEN_HEIGHT, FRONT_SCROLLER_COLOR, 3)
middle_scroller = Scroller(SCREEN_WIDTH, 200, (SCREEN_HEIGHT - 50), MIDDLE_SCROLLER_COLOR, 2)
back_scroller = Scroller(SCREEN_WIDTH, 20, (SCREEN_HEIGHT - 100), BACK_SCROLLER_COLOR, 1)

done=False

# -------- Main Program Loop -----------
while not done:
	# --- Main event loop
	for event in pygame.event.get():
		if event.type == pygame.QUIT:
			done = True

   
	screen.fill(BACKGROUND_COLOR)

	# --- Drawing code should go here

	back_scroller.draw_buildings(screen)
	back_scroller.move_buildings()
	middle_scroller.draw_buildings(screen)
	middle_scroller.move_buildings()
	front_scroller.draw_buildings(screen)
	front_scroller.move_buildings()

	# for location in sprite_pos:
	xpos = pygame.mouse.get_pos()


	PLAYER_1_SPRITE.rect.x = xpos[0]
	PLAYER_1_SPRITE.rect.y = xpos[1]
	
	good_sprite_list.update()
	bad_sprite_list.update()
	all_sprites_list.draw(screen)

	blocks_hit_list = pygame.sprite.spritecollide(PLAYER_1_SPRITE, good_sprite_list, True)
	score = 0 
	for GOOD_1_SPRITE in blocks_hit_list:
		score +=1
	blocks_hit_list = pygame.sprite.spritecollide(PLAYER_1_SPRITE, bad_sprite_list, True)
	score = 0 
	for BAD_SPRITE in blocks_hit_list:
		score -=1



	pygame.display.flip()

	clock.tick(60)

pygame.quit()
exit()