Spaceship

[BashBedlam]

You have remove the section of code that calls all of the screen updating functions so I put them back. Also in draw_window () you update yellow_health using the variable red_health.

import pygame
import os
pygame.font.init()
pygame.mixer.init()
 
WIDTH, HEIGHT = 900, 500
WIN = pygame.display.set_mode((WIDTH, HEIGHT))
pygame.display.set_caption('First Game!')
	
WHITE = (255, 255, 255)
BLACK = (0, 0, 0)
RED = (255, 0, 0)
YELLOW = (255, 255, 0)
BORDER = pygame.Rect(WIDTH//2 - 5, 0, 10, HEIGHT)
SPACESHIP_WIDTH, SPACESHIP_HEIGHT = 55, 44
BORDER = pygame.Rect(WIDTH//2 - 5, 0, 10, HEIGHT)
 
HEALTH_FONT = pygame.font.SysFont('comicsans', 40)
WINNER_FONT = pygame.font.SysFont('comicsans', 100)
FPS = 60
VEL = 3
BULLET_VEL = 7
MAX_BULLETS = 3
SPACESHIP_WIDTH, SPACESHIP_HEIGHT = 55,40

YELLOW_HIT = pygame.USEREVENT + 1
RED_HIT = pygame.USEREVENT + 2

YELLOW_SPACESHIP_IMAGE = pygame.image.load(os.path.join('First_Game', 'spaceship_yellow.png'))
YELLOW_SPACESHIP = pygame.transform.rotate(pygame.transform.scale(YELLOW_SPACESHIP_IMAGE, (SPACESHIP_WIDTH, SPACESHIP_HEIGHT)), 90)
RED_SPACESHIP_IMAGE = pygame.image.load(os.path.join('First_Game', 'spaceship_red.png'))
RED_SPACESHIP = pygame.transform.rotate(pygame.transform.scale(RED_SPACESHIP_IMAGE, (SPACESHIP_WIDTH, SPACESHIP_HEIGHT)), 270)

SPACE = pygame.transform.scale(pygame.image.load(os.path.join('First_Game', 'space.png')),(WIDTH, HEIGHT))
FPS = 60

def draw_window(red, yellow, red_bullets, yellow_bullets, red_health, yellow_health):
	WIN.blit(SPACE,(0,0))
	pygame.draw.rect(WIN, BLACK, BORDER)
	red_health_text = HEALTH_FONT.render("Health: " + str(red_health), 1,  WHITE)
	yellow_health_text = HEALTH_FONT.render("Health: " + str(yellow_health), 1,  WHITE)
	WIN.blit(red_health_text, (WIDTH - red_health_text.get_width() - 10, 10))
	WIN.blit(yellow_health_text, (10, 10))
 
	WIN.blit(YELLOW_SPACESHIP, (yellow.x, yellow.y))
	WIN.blit(RED_SPACESHIP, (red.x, red.y))

	for bullet in red_bullets:
		pygame.draw.rect(WIN,RED,bullet)

	for bullet in yellow_bullets:
		pygame.draw.rect(WIN,YELLOW,bullet)

	pygame.display.update()  

def yellow_handle_movement(keys_pressed, yellow):
	if keys_pressed[pygame.K_a] and  yellow.x - VEL > 0: #LEFT
		yellow.x -= VEL
	if keys_pressed[pygame.K_d] and yellow.x + VEL + yellow.width < BORDER.x: #RIGHT
		yellow.x += VEL
	if keys_pressed[pygame.K_w] and yellow.y - VEL > 0: #UP
		yellow.y -= VEL
	if keys_pressed[pygame.K_s] and yellow.y + VEL + yellow.height < HEIGHT - 15: #DOWN
		yellow.y += VEL
  
def red_handle_movement(keys_pressed, red):
	if keys_pressed[pygame.K_LEFT] and  red.x - VEL > BORDER.x + BORDER.width: #LEFT
		red.x -= VEL
	if keys_pressed[pygame.K_RIGHT] and red.x + VEL + red.width < WIDTH: #RIGHT
		red.x += VEL
	if keys_pressed[pygame.K_UP] and red.y - VEL > 0: #UP
		red.y -= VEL
	if keys_pressed[pygame.K_DOWN] and red.y + VEL + red.height < HEIGHT - 15: #DOWN
		red.y += VEL

def handle_bullets(yellow_bullets, red_bullets, yellow, red):
	for bullet in yellow_bullets:
		bullet.x += BULLET_VEL
		if red.colliderect(bullet):
			pygame.event.post(pygame.event.Event(RED_HIT))
			yellow_bullets.remove(bullet)
		elif bullet.x > WIDTH:
			yellow_bullets.remove(bullet)
	for bullet in red_bullets:
		bullet.x -= BULLET_VEL
		if yellow.colliderect(bullet):
			pygame.event.post(pygame.event.Event(YELLOW_HIT))
			red = pygame.Rect(700,300, SPACESHIP_WIDTH, SPACESHIP_HEIGHT)
			red_bullets.remove(bullet)
		elif bullet.x < 0:
			red_bullets.remove(bullet)
   
def main():
	red = pygame.Rect(700, 300, SPACESHIP_WIDTH, SPACESHIP_HEIGHT)
	yellow = pygame.Rect(100, 300, SPACESHIP_WIDTH, SPACESHIP_HEIGHT)

	red_bullets = []
	yellow_bullets = []
 
	red_health = 10
	yellow_health = 10

	clock=pygame.time.Clock()
	run= True
	while run:
		clock.tick(FPS)
		for event in pygame.event.get():
			if event.type == pygame.QUIT:
				run = False
				pygame.quit()
				quit ()

			if event.type == pygame.KEYDOWN:
				if event.key == pygame.K_LCTRL and len(yellow_bullets) < MAX_BULLETS:
					bullet = pygame.Rect(yellow.x + yellow.width, yellow.y + yellow.height//2 - 2, 10, 5)
					yellow_bullets.append(bullet)

				if event.key == pygame.K_SPACE and len(red_bullets) < MAX_BULLETS:
					bullet = pygame.Rect(red.x, red.y + red.height//2 - 2, 10, 5)
					red_bullets.append(bullet)
 
			if event.type == RED_HIT:
				red_health -= 1
 
			if event.type == YELLOW_HIT:
				print ('Yellow hit.')
				yellow_health -= 1
 
		winner_text = ""
		if red_health <= 0:
			winner_Text = "Yellow wins"
 
		if yellow_health <= 0:
			winner_Text = "Red Wins"
 
		if winner_text != "":
			pass #SOMEONE WON

		keys_pressed=pygame.key.get_pressed()
		yellow_handle_movement(keys_pressed, yellow)
		red_handle_movement(keys_pressed, red)
		handle_bullets (yellow_bullets, red_bullets, yellow, red)
		draw_window (red, yellow, red_bullets, yellow_bullets, red_health, yellow_health)

def draw_winner(text):
		draw_text = WINNER_FONT.render(text, 1, WHITE)
		WIN.blit(draw_text, (WIDTH/2 - draw_text.get_width() / 2, HEIGHT/2 - draw_text.get_height() / 2))
 
		pygame.display.update()
		pygame.time.delay(5000)

		winner_text = ""
		if red_health <= 0:
			winner_text = "Yellow Wins!"
 
		if yellow_health <= 0:
			winner_text = "Red Wins!"
 
		if winner_text != "":
			draw_winner(winner_text)
 
		keys_pressed=pygame.key.get_pressed()
		yellow_handle_movement(keys_pressed, yellow)
		red_handle_movement(keys_pressed, red)
   
		draw_window (red, yellow, red_bullets, yellow_bullets)
		handle_bullets (yellow_bullets, red_bullets, yellow, red)

		main()
		pygame.quit()

if __name__ == "__main__":
	main ()