import pygame, sys, random

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

    def shoot(self):
        self.gunshot.play()
        pygame.sprite.spritecollide(self, 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.x = pos_x
        self.rect.y = pos_y  

class GameState:
    def __init__(self):
        self.state = 'intro'

    def intro(self):
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
                sys.exit()
            if event.type == pygame.MOUSEBUTTONDOWN:
                self.state = 'main_game'
      
        screen.blit(background, (0, 0))
        screen.blit(ready_text,(screen_width/2 - 115,screen_height/2 -33))    
        crosshair_group.draw(screen)
        crosshair_group.update()
        pygame.display.flip()

    def main_game(self):
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
                sys.exit()
            if event.type == pygame.MOUSEBUTTONDOWN:
                crosshair.shoot()
        
        screen.blit(background, (0, 0))
        target_group.draw(screen)
        crosshair_group.draw(screen)
        crosshair_group.update()
        pygame.display.flip()

    def state_manager(self):
        if self.state == 'intro':
            self.intro()
        if self.state == 'main_game':
            self.main_game()


# General Setup
pygame.init()
clock = pygame.time.Clock()
game_state = GameState()

# Game Screen
screen_width = 1920
screen_height = 1080
screen = pygame.display.set_mode((screen_width, screen_height))
background = pygame.image.load("BG.jpg")
ready_text = pygame.image.load("ready_text.png")
pygame.mouse.set_visible(False)

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

# Target
target_group = pygame.sprite.Group()
for _ in range(20):
    new_target = Target("target.png", random.randrange(0, screen_width), random.randrange(0, screen_height))
    target_group.add(new_target)

while True:
    game_state.state_manager()
    clock.tick(60)