import pygame
import random
 
# Define some colors
BLACK = (0, 0, 0)
WHITE = (255, 255, 255)
GREEN = (0, 255, 0)
RED = (255, 0, 0)
 
 
class Block(pygame.sprite.Sprite):
    """
    This class represents the ball
    It derives from the "Sprite" class in Pygame
    """
    def __init__(self, color, x, y):
        """ Constructor. Pass in the color of the block,
        and its x and y position. """
        # Call the parent class (Sprite) constructor
        super().__init__()
 
        # Create an image of the block, and fill it with a color.
        # This could also be an image loaded from the disk.
        self.image = pygame.Surface([20, 20])
        self.image.fill(color)
        
        #self.width=100
        #self.height=100
 
        # Fetch the rectangle object that has the dimensions of the image
        # image.
        # Update the position of this object by setting the values
        # of rect.x and rect.y
        self.rect = self.image.get_rect()
        self.rect.x=x
        self.rect.y=y
        
  
         # If block is too far down, reset to top of screen.
        
 
    def reset_pos(self):
        """ Reset position to the top of the screen, at a random x location.
        Called by update() or the main program loop if there is a collision.
        """
        self.rect.y = random.randrange(-300, -20)
        self.rect.x = random.randrange(0, screen_width)
 
    def update(self):         
  
         # Move block down one pixel
         self.rect.y += 0.05
  
         # If block is too far down, reset to top of screen.
         if self.rect.y > 600:
             self.rect.y=100
 
 
class Player(pygame.sprite.Sprite):
    """ This class represents the Player. """
 
    def __init__(self):
        """ Set up the player on creation. """
        # Call the parent class (Sprite) constructor
        super().__init__()
 
        self.image = pygame.Surface([20, 20])
        self.image.fill(RED)
 
        self.rect = self.image.get_rect()
        
 
    def update(self):
        """ Update the player's position. """
        # Get the current mouse position. This returns the position
        # as a list of two numbers.
        pos = pygame.mouse.get_pos()
 
        # Set the player x position to the mouse x position
        self.rect.x = pos[0]
 
 
class Bullet(pygame.sprite.Sprite):
    """ This class represents the bullet . """
    def __init__(self):
        # Call the parent class (Sprite) constructor
        super().__init__()
 
        self.image = pygame.Surface([4, 10])
        self.image.fill(BLACK)
 
        self.rect = self.image.get_rect()
        
    def update(self):
        """ Move the bullet. """
        self.rect.y -= 11
    
 
# Initialize Pygame
pygame.init()
 
# Set the height and width of the screen
screen_width = 1000
screen_height = 800
screen = pygame.display.set_mode([screen_width, screen_height])
 
# This is a list of 'sprites.' Each block in the program is
# added to this list. The list is managed by a class called 'Group.'
block_list = pygame.sprite.Group()
 
# This is a list of every sprite. All blocks and the player block as well.
all_sprites_list = pygame.sprite.Group()

bullet_list = pygame.sprite.Group()

count=2
for i in range(100, 400, 50):
    
    for x in range(100, 900, 100):
    # This represents a block
        if count%2==0:
            
            block = Block(GREEN, x, i)
        else:
            x=x+50
            print(x)
            block = Block(GREEN, x, i)
         
        # Set a random location for the block
       
     
        # Add the block to the list of objects
        block_list.add(block)
        all_sprites_list.add(block)
    count+=1
 
# Create a red player block
#player = Player(RED, 20, 15)
#all_sprites_list.add(player)
 
# Loop until the user clicks the close button.
player = Player()
all_sprites_list.add(player)
 
# Loop until the user clicks the close button.
done = False
 
# Used to manage how fast the screen updates
clock = pygame.time.Clock()
 
score = 0
player.rect.y = 780
 
# -------- Main Program Loop -----------
while not done:
    # --- Event Processing
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            done = True
 
        elif event.type == pygame.MOUSEBUTTONDOWN:
            # Fire a bullet if the user clicks the mouse button
            bullet = Bullet()
            # Set the bullet so it is where the player is
            bullet.rect.x = player.rect.x
            bullet.rect.y = player.rect.y
            # Add the bullet to the lists
            all_sprites_list.add(bullet)
            bullet_list.add(bullet)
 
    # --- Game logic
 
    # Call the update() method on all the sprites
    all_sprites_list.update()
    block.update()
 
    # Calculate mechanics for each bullet
    for bullet in bullet_list:
 
        # See if it hit a block
        block_hit_list = pygame.sprite.spritecollide(bullet, block_list, True)
 
        # For each block hit, remove the bullet and add to the score
        for block in block_hit_list:
            bullet_list.remove(bullet)
            all_sprites_list.remove(bullet)
            score += 1
            print(score)
 
        # Remove the bullet if it flies up off the screen
        if bullet.rect.y < -10:
            bullet_list.remove(bullet)
            all_sprites_list.remove(bullet)
 
    # --- Draw a frame
 
    # Clear the screen
    screen.fill(WHITE)
 
    # Draw all the spites
    all_sprites_list.draw(screen)
 
    # Go ahead and update the screen with what we've drawn.
    pygame.display.flip()
 
    # --- Limit to 20 frames per second
    clock.tick(20)
 
pygame.quit()