from typing import Any
import pygame
import sys
import random

class Crosshair(pygame.sprite.Sprite):
    def __init__(self, picture_path):
        super().__init__()
        self.image = pygame.image.load("crosshair_blue_large.png")
        self.rect = self.image.get_rect()
        self.gunshot = pygame.mixer.Sound("boom.wav")

    def shoot(self):
        self.gunshot.play()
        pygame.sprite.spritecollide(crosshair, target_group, True)
        

    def update(self):
        self.rect.center = pygame.mouse.get_pos()

class Target(pygame.sprite.Sprite):
    def __init__(self, picture_path, pos_x, pos_y):
        super().__init__()
        self.image = pygame.image.load(picture_path)
        self.rect = self.image.get_rect()
        self.rect.center = [pos_x, pos_y]
        self.speed = random.randint(1, 3)

    def update(self):
        self.rect.x += self.speed
        if self.rect.left > screen_width:
            self.rect.right = 0
            self.rect.centery = random.randint(0, screen_height)

def respawn_targets():
    for _ in range(20):
        new_target = Target("target_red1.png", random.randrange(0, screen_width), random.randrange(0, screen_height))
        target_group.add(new_target)

# Setup
pygame.init()
clock = pygame.time.Clock()

# Screen for game
screen_width = 1000
screen_height = 800
screen = pygame.display.set_mode((screen_width, screen_height))

# The background
background = pygame.image.load("bg_wood.png").convert()

pygame.mouse.set_visible(False)

# The crosshair
crosshair = Crosshair("crosshair_blue_large.png")
crosshair_group = pygame.sprite.Group()
crosshair_group.add(crosshair)

# Targets
target_group = pygame.sprite.Group()
respawn_targets()

# Calculate number of tiles needed to cover the screen
num_tiles_x = (screen_width // background.get_width()) + 1
num_tiles_y = (screen_height // background.get_height()) + 1

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

        if event.type == pygame.MOUSEBUTTONDOWN:
            crosshair.shoot()

    # Update targets
    target_group.update()

    # Draw background tiles
    for y in range(num_tiles_y):
        for x in range(num_tiles_x):
            screen.blit(background, (x * background.get_width(), y * background.get_height()))

    target_group.draw(screen)
    crosshair_group.update()
    crosshair_group.draw(screen)
    pygame.display.flip()
    clock.tick(60)

    # Respawn targets if all are gone
    if len(target_group) == 0:
        respawn_targets()

    target_group.draw(screen)
    crosshair_group.update()
    crosshair_group.draw(screen) 
    pygame.display.flip()
    clock.tick(60)