消除方块+不同颜色score加减分+player是否出界+鼠标控制+窗口显示得分

要求：

http://programarcadegames.com/index.php?chapter=lab_sprite_collecting

# Sample Python/Pygame Programs# Simpson College Computer Science# http://programarcadegames.com/# http://simpson.edu/computer-science/ # Explanation video: http://youtu.be/4W2AqUetBi4 import pygameimport random # Define some colorsblack    = (   0,   0,   0)white    = ( 255, 255, 255)red      = ( 255,   0,   0)green    =  (  0, 255,   0)blue     = (0,0,255) # This class represents the ball        # It derives from the "Sprite" class in Pygameclass Block(pygame.sprite.Sprite):         # Constructor. Pass in the color of the block,     # and its x and y position    def __init__(self, color, width, height):        # Call the parent class (Sprite) constructor        pygame.sprite.Sprite.__init__(self)          # 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([width, height])        self.image.fill(color)         # 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()class Player(pygame.sprite.Sprite):    change_x = 0    change_y = 0    def __init__(self,x,y):        pygame.sprite.Sprite.__init__(self)        self.image = pygame.Surface([15,15])        self.image.fill(blue)        self.rect = self.image.get_rect()        self.rect.x = x        self.rect.y = y    def changespeed(self,x,y):        self.change_x += x        self.change_y += y    def update(self):        self.rect.x += self.change_x        self.rect.y += self.change_y                if self.rect.x>700:            self.rect.x = 0        if self.rect.x<0:            self.rect.x = 700        if self.rect.y>500:            self.rect.y = 0        if self.rect.y<0:            self.rect.y = 500        # Initialize Pygamepygame.init() # Set the height and width of the screenscreen_width=700screen_height=400screen=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.'good_list = pygame.sprite.Group()bad_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() for i in range(50):    # This represents a block    block = Block(green, 20, 15)     # Set a random location for the block    block.rect.x = random.randrange(screen_width)    block.rect.y = random.randrange(screen_height)         # Add the block to the list of objects    good_list.add(block)    all_sprites_list.add(block)for i in range(50):    # This represents a block    block = Block(red, 20, 15)     # Set a random location for the block    block.rect.x = random.randrange(screen_width)    block.rect.y = random.randrange(screen_height)         # Add the block to the list of objects    bad_list.add(block)    all_sprites_list.add(block)           # Create a red player blockplayer = Player(20, 15)all_sprites_list.add(player) #Loop until the user clicks the close button.done = False # Used to manage how fast the screen updatesclock = pygame.time.Clock() score = 0 # -------- Main Program Loop -----------while done==False:    for event in pygame.event.get(): # User did something        if event.type == pygame.QUIT: # If user clicked close            done = True # Flag that we are done so we exit this loop     # Set the speed based on the key pressed        elif event.type == pygame.KEYDOWN:            if event.key == pygame.K_LEFT:                player.changespeed(-3,0)            elif event.key == pygame.K_RIGHT:                player.changespeed(3,0)            elif event.key == pygame.K_UP:                player.changespeed(0,-3)            elif event.key == pygame.K_DOWN:                player.changespeed(0,3)                         # Reset speed when key goes up              elif event.type == pygame.KEYUP:            if event.key == pygame.K_LEFT:                player.changespeed(3,0)            elif event.key == pygame.K_RIGHT:                player.changespeed(-3,0)            elif event.key == pygame.K_UP:                player.changespeed(0,3)            elif event.key == pygame.K_DOWN:                player.changespeed(0,-3)          player.update()    # Clear the screen    screen.fill(white)                 # See if the player block has collided with anything.    blocks_good_list = pygame.sprite.spritecollide(player, good_list, True)      blocks_bad_list = pygame.sprite.spritecollide(player, bad_list, True)            # Check the list of collisions.    for block in blocks_good_list:        score += 1                 for block in blocks_bad_list:        score += -1            font = pygame.font.Font(None,25)    text = font.render("The score is "+str(score),True,black)    screen.blit(text,[5,5])              # Draw all the spites    all_sprites_list.draw(screen)         # Limit to 20 frames per second    clock.tick(20)     # Go ahead and update the screen with what we've drawn.    pygame.display.flip() pygame.quit()