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import pygame import random import sys

pygame.init()

WIDTH = 800 HEIGHT = 600

RED = (255,0,0) BLUE = (0,0,255) YELLOW = (255,255,0) BACKGROUND_COLOR = (0,0,0)

player_size = 50 player_pos = [WIDTH/2, HEIGHT-2*player_size]

enemy_size = 50 enemy_pos = [random.randint(0,WIDTH-enemy_size), 0] enemy_list = [enemy_pos]

SPEED = 10

screen = pygame.display.set_mode((WIDTH, HEIGHT))

game_over = False

score = 0

clock = pygame.time.Clock()

myFont = pygame.font.SysFont("monospace", 35)

def set_level(score, SPEED): if score < 20: SPEED = 5 elif score < 40: SPEED = 8 elif score < 60: SPEED = 12 else: SPEED = 15 return SPEED # SPEED = score/5 + 1

def drop_enemies(enemy_list): delay = random.random() if len(enemy_list) < 10 and delay < 0.1: x_pos = random.randint(0,WIDTH-enemy_size) y_pos = 0 enemy_list.append([x_pos, y_pos])

def draw_enemies(enemy_list): for enemy_pos in enemy_list: pygame.draw.rect(screen, BLUE, (enemy_pos[0], enemy_pos[1], enemy_size, enemy_size))

def update_enemy_positions(enemy_list, score): for idx, enemy_pos in enumerate(enemy_list): if enemy_pos[1] >= 0 and enemy_pos[1] < HEIGHT: enemy_pos[1] += SPEED else: enemy_list.pop(idx) score += 1 return score

def collision_check(enemy_list, player_pos): for enemy_pos in enemy_list: if detect_collision(enemy_pos, player_pos): return True return False

def detect_collision(player_pos, enemy_pos): p_x = player_pos[0] p_y = player_pos[1]

e_x = enemy_pos[0]
e_y = enemy_pos[1]

if (e_x >= p_x and e_x < (p_x + player_size)) or (p_x >= e_x and p_x < (e_x+enemy_size)):
	if (e_y >= p_y and e_y < (p_y + player_size)) or (p_y >= e_y and p_y < (e_y+enemy_size)):
		return True
return False

while not game_over:

for event in pygame.event.get():
	if event.type == pygame.QUIT:
		sys.exit()

	if event.type == pygame.KEYDOWN:

		x = player_pos[0]
		y = player_pos[1]

		if event.key == pygame.K_LEFT:
			x -= player_size
		elif event.key == pygame.K_RIGHT:
			x += player_size

		player_pos = [x,y]

screen.fill(BACKGROUND_COLOR)

drop_enemies(enemy_list)
score = update_enemy_positions(enemy_list, score)
SPEED = set_level(score, SPEED)

text = "Score:" + str(score)
label = myFont.render(text, 1, YELLOW)
screen.blit(label, (WIDTH-200, HEIGHT-40))

if collision_check(enemy_list, player_pos):
	game_over = True
	break

draw_enemies(enemy_list)

pygame.draw.rect(screen, RED, (player_pos[0], player_pos[1], player_size, player_size))

clock.tick(30)

pygame.display.update()